diff --git a/.DS_Store b/.DS_Store
new file mode 100644
index 00000000..5377ef77
Binary files /dev/null and b/.DS_Store differ
diff --git a/lib/.DS_Store b/lib/.DS_Store
index c158cc13..43434677 100644
Binary files a/lib/.DS_Store and b/lib/.DS_Store differ
diff --git a/lib/Adafruit_BusIO/.github/ISSUE_TEMPLATE.md b/lib/Adafruit_BusIO/.github/ISSUE_TEMPLATE.md
new file mode 100644
index 00000000..f0e26146
--- /dev/null
+++ b/lib/Adafruit_BusIO/.github/ISSUE_TEMPLATE.md
@@ -0,0 +1,46 @@
+Thank you for opening an issue on an Adafruit Arduino library repository.  To
+improve the speed of resolution please review the following guidelines and
+common troubleshooting steps below before creating the issue:
+
+- **Do not use GitHub issues for troubleshooting projects and issues.**  Instead use
+  the forums at http://forums.adafruit.com to ask questions and troubleshoot why
+  something isn't working as expected.  In many cases the problem is a common issue
+  that you will more quickly receive help from the forum community.  GitHub issues
+  are meant for known defects in the code.  If you don't know if there is a defect
+  in the code then start with troubleshooting on the forum first.
+
+- **If following a tutorial or guide be sure you didn't miss a step.** Carefully
+  check all of the steps and commands to run have been followed.  Consult the
+  forum if you're unsure or have questions about steps in a guide/tutorial.
+
+- **For Arduino projects check these very common issues to ensure they don't apply**:
+
+  - For uploading sketches or communicating with the board make sure you're using
+    a **USB data cable** and **not** a **USB charge-only cable**.  It is sometimes
+    very hard to tell the difference between a data and charge cable!  Try using the
+    cable with other devices or swapping to another cable to confirm it is not
+    the problem.
+
+  - **Be sure you are supplying adequate power to the board.**  Check the specs of
+    your board and plug in an external power supply.  In many cases just
+    plugging a board into your computer is not enough to power it and other
+    peripherals.
+
+  - **Double check all soldering joints and connections.**  Flakey connections
+    cause many mysterious problems.  See the [guide to excellent soldering](https://learn.adafruit.com/adafruit-guide-excellent-soldering/tools) for examples of good solder joints.
+
+  - **Ensure you are using an official Arduino or Adafruit board.** We can't
+    guarantee a clone board will have the same functionality and work as expected
+    with this code and don't support them.
+
+If you're sure this issue is a defect in the code and checked the steps above
+please fill in the following fields to provide enough troubleshooting information.
+You may delete the guideline and text above to just leave the following details:
+
+- Arduino board:  **INSERT ARDUINO BOARD NAME/TYPE HERE**
+
+- Arduino IDE version (found in Arduino -> About Arduino menu):  **INSERT ARDUINO
+  VERSION HERE**
+
+- List the steps to reproduce the problem below (if possible attach a sketch or
+  copy the sketch code in too): **LIST REPRO STEPS BELOW**
diff --git a/lib/Adafruit_BusIO/.github/PULL_REQUEST_TEMPLATE.md b/lib/Adafruit_BusIO/.github/PULL_REQUEST_TEMPLATE.md
new file mode 100644
index 00000000..7b641eb8
--- /dev/null
+++ b/lib/Adafruit_BusIO/.github/PULL_REQUEST_TEMPLATE.md
@@ -0,0 +1,26 @@
+Thank you for creating a pull request to contribute to Adafruit's GitHub code!
+Before you open the request please review the following guidelines and tips to
+help it be more easily integrated:
+
+- **Describe the scope of your change--i.e. what the change does and what parts
+  of the code were modified.**  This will help us understand any risks of integrating
+  the code.
+
+- **Describe any known limitations with your change.**  For example if the change
+  doesn't apply to a supported platform of the library please mention it.
+
+- **Please run any tests or examples that can exercise your modified code.**  We
+  strive to not break users of the code and running tests/examples helps with this
+  process.
+
+Thank you again for contributing!  We will try to test and integrate the change
+as soon as we can, but be aware we have many GitHub repositories to manage and
+can't immediately respond to every request.  There is no need to bump or check in
+on a pull request (it will clutter the discussion of the request).
+
+Also don't be worried if the request is closed or not integrated--sometimes the
+priorities of Adafruit's GitHub code (education, ease of use) might not match the
+priorities of the pull request.  Don't fret, the open source community thrives on
+forks and GitHub makes it easy to keep your changes in a forked repo.
+
+After reviewing the guidelines above you can delete this text from the pull request.
diff --git a/lib/Adafruit_BusIO/.github/workflows/githubci.yml b/lib/Adafruit_BusIO/.github/workflows/githubci.yml
new file mode 100644
index 00000000..7faea576
--- /dev/null
+++ b/lib/Adafruit_BusIO/.github/workflows/githubci.yml
@@ -0,0 +1,33 @@
+name: Arduino Library CI
+
+on: [pull_request, push, repository_dispatch]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    
+    steps:
+    - uses: actions/setup-python@v1
+      with:
+        python-version: '3.x'
+    - uses: actions/checkout@v2
+    - uses: actions/checkout@v2
+      with:
+         repository: adafruit/ci-arduino
+         path: ci
+
+    - name: Install the prerequisites
+      run: bash ci/actions_install.sh
+
+    - name: Check for correct code formatting with clang-format
+      run: python3 ci/run-clang-format.py -e "ci/*" -e "bin/*" -r .
+
+    - name: Check for correct documentation with doxygen
+      env:
+        GH_REPO_TOKEN: ${{ secrets.GH_REPO_TOKEN }}
+        PRETTYNAME : "Adafruit Bus IO Library"
+      run: bash ci/doxy_gen_and_deploy.sh
+
+    - name: Test the code on supported platforms
+      run: python3 ci/build_platform.py main_platforms zero feather32u4
+
diff --git a/lib/Adafruit_BusIO/Adafruit_BusIO_Register.cpp b/lib/Adafruit_BusIO/Adafruit_BusIO_Register.cpp
new file mode 100644
index 00000000..a28193f9
--- /dev/null
+++ b/lib/Adafruit_BusIO/Adafruit_BusIO_Register.cpp
@@ -0,0 +1,365 @@
+#include <Adafruit_BusIO_Register.h>
+
+#if !defined(SPI_INTERFACES_COUNT) ||                                          \
+    (defined(SPI_INTERFACES_COUNT) && (SPI_INTERFACES_COUNT > 0))
+
+/*!
+ *    @brief  Create a register we access over an I2C Device (which defines the
+ * bus and address)
+ *    @param  i2cdevice The I2CDevice to use for underlying I2C access
+ *    @param  reg_addr The address pointer value for the I2C/SMBus register, can
+ * be 8 or 16 bits
+ *    @param  width    The width of the register data itself, defaults to 1 byte
+ *    @param  byteorder The byte order of the register (used when width is > 1),
+ * defaults to LSBFIRST
+ *    @param  address_width The width of the register address itself, defaults
+ * to 1 byte
+ */
+Adafruit_BusIO_Register::Adafruit_BusIO_Register(Adafruit_I2CDevice *i2cdevice,
+                                                 uint16_t reg_addr,
+                                                 uint8_t width,
+                                                 uint8_t byteorder,
+                                                 uint8_t address_width) {
+  _i2cdevice = i2cdevice;
+  _spidevice = nullptr;
+  _addrwidth = address_width;
+  _address = reg_addr;
+  _byteorder = byteorder;
+  _width = width;
+}
+
+/*!
+ *    @brief  Create a register we access over an SPI Device (which defines the
+ * bus and CS pin)
+ *    @param  spidevice The SPIDevice to use for underlying SPI access
+ *    @param  reg_addr The address pointer value for the SPI register, can
+ * be 8 or 16 bits
+ *    @param  type     The method we use to read/write data to SPI (which is not
+ * as well defined as I2C)
+ *    @param  width    The width of the register data itself, defaults to 1 byte
+ *    @param  byteorder The byte order of the register (used when width is > 1),
+ * defaults to LSBFIRST
+ *    @param  address_width The width of the register address itself, defaults
+ * to 1 byte
+ */
+Adafruit_BusIO_Register::Adafruit_BusIO_Register(Adafruit_SPIDevice *spidevice,
+                                                 uint16_t reg_addr,
+                                                 Adafruit_BusIO_SPIRegType type,
+                                                 uint8_t width,
+                                                 uint8_t byteorder,
+                                                 uint8_t address_width) {
+  _spidevice = spidevice;
+  _spiregtype = type;
+  _i2cdevice = nullptr;
+  _addrwidth = address_width;
+  _address = reg_addr;
+  _byteorder = byteorder;
+  _width = width;
+}
+
+/*!
+ *    @brief  Create a register we access over an I2C or SPI Device. This is a
+ * handy function because we can pass in nullptr for the unused interface,
+ * allowing libraries to mass-define all the registers
+ *    @param  i2cdevice The I2CDevice to use for underlying I2C access, if
+ * nullptr we use SPI
+ *    @param  spidevice The SPIDevice to use for underlying SPI access, if
+ * nullptr we use I2C
+ *    @param  reg_addr The address pointer value for the I2C/SMBus/SPI register,
+ * can be 8 or 16 bits
+ *    @param  type     The method we use to read/write data to SPI (which is not
+ * as well defined as I2C)
+ *    @param  width    The width of the register data itself, defaults to 1 byte
+ *    @param  byteorder The byte order of the register (used when width is > 1),
+ * defaults to LSBFIRST
+ *    @param  address_width The width of the register address itself, defaults
+ * to 1 byte
+ */
+Adafruit_BusIO_Register::Adafruit_BusIO_Register(
+    Adafruit_I2CDevice *i2cdevice, Adafruit_SPIDevice *spidevice,
+    Adafruit_BusIO_SPIRegType type, uint16_t reg_addr, uint8_t width,
+    uint8_t byteorder, uint8_t address_width) {
+  _spidevice = spidevice;
+  _i2cdevice = i2cdevice;
+  _spiregtype = type;
+  _addrwidth = address_width;
+  _address = reg_addr;
+  _byteorder = byteorder;
+  _width = width;
+}
+
+/*!
+ *    @brief  Write a buffer of data to the register location
+ *    @param  buffer Pointer to data to write
+ *    @param  len Number of bytes to write
+ *    @return True on successful write (only really useful for I2C as SPI is
+ * uncheckable)
+ */
+bool Adafruit_BusIO_Register::write(uint8_t *buffer, uint8_t len) {
+
+  uint8_t addrbuffer[2] = {(uint8_t)(_address & 0xFF),
+                           (uint8_t)(_address >> 8)};
+
+  if (_i2cdevice) {
+    return _i2cdevice->write(buffer, len, true, addrbuffer, _addrwidth);
+  }
+  if (_spidevice) {
+    if (_spiregtype == ADDRESSED_OPCODE_BIT0_LOW_TO_WRITE) {
+      // very special case!
+
+      // pass the special opcode address which we set as the high byte of the
+      // regaddr
+      addrbuffer[0] =
+          (uint8_t)(_address >> 8) & ~0x01; // set bottom bit low to write
+      // the 'actual' reg addr is the second byte then
+      addrbuffer[1] = (uint8_t)(_address & 0xFF);
+      // the address appears to be a byte longer
+      return _spidevice->write(buffer, len, addrbuffer, _addrwidth + 1);
+    }
+
+    if (_spiregtype == ADDRBIT8_HIGH_TOREAD) {
+      addrbuffer[0] &= ~0x80;
+    }
+    if (_spiregtype == ADDRBIT8_HIGH_TOWRITE) {
+      addrbuffer[0] |= 0x80;
+    }
+    if (_spiregtype == AD8_HIGH_TOREAD_AD7_HIGH_TOINC) {
+      addrbuffer[0] &= ~0x80;
+      addrbuffer[0] |= 0x40;
+    }
+    return _spidevice->write(buffer, len, addrbuffer, _addrwidth);
+  }
+  return false;
+}
+
+/*!
+ *    @brief  Write up to 4 bytes of data to the register location
+ *    @param  value Data to write
+ *    @param  numbytes How many bytes from 'value' to write
+ *    @return True on successful write (only really useful for I2C as SPI is
+ * uncheckable)
+ */
+bool Adafruit_BusIO_Register::write(uint32_t value, uint8_t numbytes) {
+  if (numbytes == 0) {
+    numbytes = _width;
+  }
+  if (numbytes > 4) {
+    return false;
+  }
+
+  // store a copy
+  _cached = value;
+
+  for (int i = 0; i < numbytes; i++) {
+    if (_byteorder == LSBFIRST) {
+      _buffer[i] = value & 0xFF;
+    } else {
+      _buffer[numbytes - i - 1] = value & 0xFF;
+    }
+    value >>= 8;
+  }
+  return write(_buffer, numbytes);
+}
+
+/*!
+ *    @brief  Read data from the register location. This does not do any error
+ * checking!
+ *    @return Returns 0xFFFFFFFF on failure, value otherwise
+ */
+uint32_t Adafruit_BusIO_Register::read(void) {
+  if (!read(_buffer, _width)) {
+    return -1;
+  }
+
+  uint32_t value = 0;
+
+  for (int i = 0; i < _width; i++) {
+    value <<= 8;
+    if (_byteorder == LSBFIRST) {
+      value |= _buffer[_width - i - 1];
+    } else {
+      value |= _buffer[i];
+    }
+  }
+
+  return value;
+}
+
+/*!
+ *    @brief  Read cached data from last time we wrote to this register
+ *    @return Returns 0xFFFFFFFF on failure, value otherwise
+ */
+uint32_t Adafruit_BusIO_Register::readCached(void) { return _cached; }
+
+/*!
+ *    @brief  Read a buffer of data from the register location
+ *    @param  buffer Pointer to data to read into
+ *    @param  len Number of bytes to read
+ *    @return True on successful write (only really useful for I2C as SPI is
+ * uncheckable)
+ */
+bool Adafruit_BusIO_Register::read(uint8_t *buffer, uint8_t len) {
+  uint8_t addrbuffer[2] = {(uint8_t)(_address & 0xFF),
+                           (uint8_t)(_address >> 8)};
+
+  if (_i2cdevice) {
+    return _i2cdevice->write_then_read(addrbuffer, _addrwidth, buffer, len);
+  }
+  if (_spidevice) {
+    if (_spiregtype == ADDRESSED_OPCODE_BIT0_LOW_TO_WRITE) {
+      // very special case!
+
+      // pass the special opcode address which we set as the high byte of the
+      // regaddr
+      addrbuffer[0] =
+          (uint8_t)(_address >> 8) | 0x01; // set bottom bit high to read
+      // the 'actual' reg addr is the second byte then
+      addrbuffer[1] = (uint8_t)(_address & 0xFF);
+      // the address appears to be a byte longer
+      return _spidevice->write_then_read(addrbuffer, _addrwidth + 1, buffer,
+                                         len);
+    }
+    if (_spiregtype == ADDRBIT8_HIGH_TOREAD) {
+      addrbuffer[0] |= 0x80;
+    }
+    if (_spiregtype == ADDRBIT8_HIGH_TOWRITE) {
+      addrbuffer[0] &= ~0x80;
+    }
+    if (_spiregtype == AD8_HIGH_TOREAD_AD7_HIGH_TOINC) {
+      addrbuffer[0] |= 0x80 | 0x40;
+    }
+    return _spidevice->write_then_read(addrbuffer, _addrwidth, buffer, len);
+  }
+  return false;
+}
+
+/*!
+ *    @brief  Read 2 bytes of data from the register location
+ *    @param  value Pointer to uint16_t variable to read into
+ *    @return True on successful write (only really useful for I2C as SPI is
+ * uncheckable)
+ */
+bool Adafruit_BusIO_Register::read(uint16_t *value) {
+  if (!read(_buffer, 2)) {
+    return false;
+  }
+
+  if (_byteorder == LSBFIRST) {
+    *value = _buffer[1];
+    *value <<= 8;
+    *value |= _buffer[0];
+  } else {
+    *value = _buffer[0];
+    *value <<= 8;
+    *value |= _buffer[1];
+  }
+  return true;
+}
+
+/*!
+ *    @brief  Read 1 byte of data from the register location
+ *    @param  value Pointer to uint8_t variable to read into
+ *    @return True on successful write (only really useful for I2C as SPI is
+ * uncheckable)
+ */
+bool Adafruit_BusIO_Register::read(uint8_t *value) {
+  if (!read(_buffer, 1)) {
+    return false;
+  }
+
+  *value = _buffer[0];
+  return true;
+}
+
+/*!
+ *    @brief  Pretty printer for this register
+ *    @param  s The Stream to print to, defaults to &Serial
+ */
+void Adafruit_BusIO_Register::print(Stream *s) {
+  uint32_t val = read();
+  s->print("0x");
+  s->print(val, HEX);
+}
+
+/*!
+ *    @brief  Pretty printer for this register
+ *    @param  s The Stream to print to, defaults to &Serial
+ */
+void Adafruit_BusIO_Register::println(Stream *s) {
+  print(s);
+  s->println();
+}
+
+/*!
+ *    @brief  Create a slice of the register that we can address without
+ * touching other bits
+ *    @param  reg The Adafruit_BusIO_Register which defines the bus/register
+ *    @param  bits The number of bits wide we are slicing
+ *    @param  shift The number of bits that our bit-slice is shifted from LSB
+ */
+Adafruit_BusIO_RegisterBits::Adafruit_BusIO_RegisterBits(
+    Adafruit_BusIO_Register *reg, uint8_t bits, uint8_t shift) {
+  _register = reg;
+  _bits = bits;
+  _shift = shift;
+}
+
+/*!
+ *    @brief  Read 4 bytes of data from the register
+ *    @return  data The 4 bytes to read
+ */
+uint32_t Adafruit_BusIO_RegisterBits::read(void) {
+  uint32_t val = _register->read();
+  val >>= _shift;
+  return val & ((1 << (_bits)) - 1);
+}
+
+/*!
+ *    @brief  Write 4 bytes of data to the register
+ *    @param  data The 4 bytes to write
+ *    @return True on successful write (only really useful for I2C as SPI is
+ * uncheckable)
+ */
+bool Adafruit_BusIO_RegisterBits::write(uint32_t data) {
+  uint32_t val = _register->read();
+
+  // mask off the data before writing
+  uint32_t mask = (1 << (_bits)) - 1;
+  data &= mask;
+
+  mask <<= _shift;
+  val &= ~mask;          // remove the current data at that spot
+  val |= data << _shift; // and add in the new data
+
+  return _register->write(val, _register->width());
+}
+
+/*!
+ *    @brief  The width of the register data, helpful for doing calculations
+ *    @returns The data width used when initializing the register
+ */
+uint8_t Adafruit_BusIO_Register::width(void) { return _width; }
+
+/*!
+ *    @brief  Set the default width of data
+ *    @param width the default width of data read from register
+ */
+void Adafruit_BusIO_Register::setWidth(uint8_t width) { _width = width; }
+
+/*!
+ *    @brief  Set register address
+ *    @param address the address from register
+ */
+void Adafruit_BusIO_Register::setAddress(uint16_t address) {
+  _address = address;
+}
+
+/*!
+ *    @brief  Set the width of register address
+ *    @param address_width the width for register address
+ */
+void Adafruit_BusIO_Register::setAddressWidth(uint16_t address_width) {
+  _addrwidth = address_width;
+}
+
+#endif // SPI exists
diff --git a/lib/Adafruit_BusIO/Adafruit_BusIO_Register.h b/lib/Adafruit_BusIO/Adafruit_BusIO_Register.h
new file mode 100644
index 00000000..c6d58de6
--- /dev/null
+++ b/lib/Adafruit_BusIO/Adafruit_BusIO_Register.h
@@ -0,0 +1,105 @@
+#ifndef Adafruit_BusIO_Register_h
+#define Adafruit_BusIO_Register_h
+
+#include <Arduino.h>
+
+#if !defined(SPI_INTERFACES_COUNT) ||                                          \
+    (defined(SPI_INTERFACES_COUNT) && (SPI_INTERFACES_COUNT > 0))
+
+#include <Adafruit_I2CDevice.h>
+#include <Adafruit_SPIDevice.h>
+
+typedef enum _Adafruit_BusIO_SPIRegType {
+  ADDRBIT8_HIGH_TOREAD = 0,
+  /*!<
+   * ADDRBIT8_HIGH_TOREAD
+   * When reading a register you must actually send the value 0x80 + register
+   * address to the device. e.g. To read the register 0x0B the register value
+   * 0x8B is sent and to write 0x0B is sent.
+   */
+  AD8_HIGH_TOREAD_AD7_HIGH_TOINC = 1,
+
+  /*!<
+   * ADDRBIT8_HIGH_TOWRITE
+   * When writing to a register you must actually send the value 0x80 +
+   * the register address to the device. e.g. To write to the register 0x19 the
+   * register value 0x99 is sent and to read 0x19 is sent.
+   */
+  ADDRBIT8_HIGH_TOWRITE = 2,
+
+  /*!<
+   * ADDRESSED_OPCODE_LOWBIT_TO_WRITE
+   * Used by the MCP23S series, we send 0x40 |'rd with the opcode
+   * Then set the lowest bit to write
+   */
+  ADDRESSED_OPCODE_BIT0_LOW_TO_WRITE = 3,
+
+} Adafruit_BusIO_SPIRegType;
+
+/*!
+ * @brief The class which defines a device register (a location to read/write
+ * data from)
+ */
+class Adafruit_BusIO_Register {
+public:
+  Adafruit_BusIO_Register(Adafruit_I2CDevice *i2cdevice, uint16_t reg_addr,
+                          uint8_t width = 1, uint8_t byteorder = LSBFIRST,
+                          uint8_t address_width = 1);
+
+  Adafruit_BusIO_Register(Adafruit_SPIDevice *spidevice, uint16_t reg_addr,
+                          Adafruit_BusIO_SPIRegType type, uint8_t width = 1,
+                          uint8_t byteorder = LSBFIRST,
+                          uint8_t address_width = 1);
+
+  Adafruit_BusIO_Register(Adafruit_I2CDevice *i2cdevice,
+                          Adafruit_SPIDevice *spidevice,
+                          Adafruit_BusIO_SPIRegType type, uint16_t reg_addr,
+                          uint8_t width = 1, uint8_t byteorder = LSBFIRST,
+                          uint8_t address_width = 1);
+
+  bool read(uint8_t *buffer, uint8_t len);
+  bool read(uint8_t *value);
+  bool read(uint16_t *value);
+  uint32_t read(void);
+  uint32_t readCached(void);
+  bool write(uint8_t *buffer, uint8_t len);
+  bool write(uint32_t value, uint8_t numbytes = 0);
+
+  uint8_t width(void);
+
+  void setWidth(uint8_t width);
+  void setAddress(uint16_t address);
+  void setAddressWidth(uint16_t address_width);
+
+  void print(Stream *s = &Serial);
+  void println(Stream *s = &Serial);
+
+private:
+  Adafruit_I2CDevice *_i2cdevice;
+  Adafruit_SPIDevice *_spidevice;
+  Adafruit_BusIO_SPIRegType _spiregtype;
+  uint16_t _address;
+  uint8_t _width, _addrwidth, _byteorder;
+  uint8_t _buffer[4]; // we won't support anything larger than uint32 for
+                      // non-buffered read
+  uint32_t _cached = 0;
+};
+
+/*!
+ * @brief The class which defines a slice of bits from within a device register
+ * (a location to read/write data from)
+ */
+class Adafruit_BusIO_RegisterBits {
+public:
+  Adafruit_BusIO_RegisterBits(Adafruit_BusIO_Register *reg, uint8_t bits,
+                              uint8_t shift);
+  bool write(uint32_t value);
+  uint32_t read(void);
+
+private:
+  Adafruit_BusIO_Register *_register;
+  uint8_t _bits, _shift;
+};
+
+#endif // SPI exists
+#endif // BusIO_Register_h
diff --git a/lib/Adafruit_BusIO/Adafruit_I2CDevice.cpp b/lib/Adafruit_BusIO/Adafruit_I2CDevice.cpp
new file mode 100644
index 00000000..9b518b48
--- /dev/null
+++ b/lib/Adafruit_BusIO/Adafruit_I2CDevice.cpp
@@ -0,0 +1,313 @@
+#include "Adafruit_I2CDevice.h"
+
+//#define DEBUG_SERIAL Serial
+
+/*!
+ *    @brief  Create an I2C device at a given address
+ *    @param  addr The 7-bit I2C address for the device
+ *    @param  theWire The I2C bus to use, defaults to &Wire
+ */
+Adafruit_I2CDevice::Adafruit_I2CDevice(uint8_t addr, TwoWire *theWire) {
+  _addr = addr;
+  _wire = theWire;
+  _begun = false;
+#ifdef ARDUINO_ARCH_SAMD
+  _maxBufferSize = 250; // as defined in Wire.h's RingBuffer
+#elif defined(ESP32)
+  _maxBufferSize = I2C_BUFFER_LENGTH;
+#else
+  _maxBufferSize = 32;
+#endif
+}
+
+/*!
+ *    @brief  Initializes and does basic address detection
+ *    @param  addr_detect Whether we should attempt to detect the I2C address
+ * with a scan. 99% of sensors/devices don't mind but once in a while, they spaz
+ * on a scan!
+ *    @return True if I2C initialized and a device with the addr found
+ */
+bool Adafruit_I2CDevice::begin(bool addr_detect) {
+  _wire->begin();
+  _begun = true;
+
+  if (addr_detect) {
+    return detected();
+  }
+  return true;
+}
+
+/*!
+ *    @brief  De-initialize device, turn off the Wire interface
+ */
+void Adafruit_I2CDevice::end(void) {
+  // Not all port implement Wire::end(), such as
+  // - ESP8266
+  // - AVR core without WIRE_HAS_END
+  // - ESP32: end() is implemented since 2.0.1 which is latest at the moment.
+  // Temporarily disable for now to give time for user to update.
+#if !(defined(ESP8266) ||                                                      \
+      (defined(ARDUINO_ARCH_AVR) && !defined(WIRE_HAS_END)) ||                 \
+      defined(ARDUINO_ARCH_ESP32))
+  _wire->end();
+  _begun = false;
+#endif
+}
+
+/*!
+ *    @brief  Scans I2C for the address - note will give a false-positive
+ *    if there's no pullups on I2C
+ *    @return True if I2C initialized and a device with the addr found
+ */
+bool Adafruit_I2CDevice::detected(void) {
+  // Init I2C if not done yet
+  if (!_begun && !begin()) {
+    return false;
+  }
+
+  // A basic scanner, see if it ACK's
+  _wire->beginTransmission(_addr);
+  if (_wire->endTransmission() == 0) {
+#ifdef DEBUG_SERIAL
+    DEBUG_SERIAL.println(F("Detected"));
+#endif
+    return true;
+  }
+#ifdef DEBUG_SERIAL
+  DEBUG_SERIAL.println(F("Not detected"));
+#endif
+  return false;
+}
+
+/*!
+ *    @brief  Write a buffer or two to the I2C device. Cannot be more than
+ * maxBufferSize() bytes.
+ *    @param  buffer Pointer to buffer of data to write. This is const to
+ *            ensure the content of this buffer doesn't change.
+ *    @param  len Number of bytes from buffer to write
+ *    @param  prefix_buffer Pointer to optional array of data to write before
+ * buffer. Cannot be more than maxBufferSize() bytes. This is const to
+ *            ensure the content of this buffer doesn't change.
+ *    @param  prefix_len Number of bytes from prefix buffer to write
+ *    @param  stop Whether to send an I2C STOP signal on write
+ *    @return True if write was successful, otherwise false.
+ */
+bool Adafruit_I2CDevice::write(const uint8_t *buffer, size_t len, bool stop,
+                               const uint8_t *prefix_buffer,
+                               size_t prefix_len) {
+  if ((len + prefix_len) > maxBufferSize()) {
+    // currently not guaranteed to work if more than 32 bytes!
+    // we will need to find out if some platforms have larger
+    // I2C buffer sizes :/
+#ifdef DEBUG_SERIAL
+    DEBUG_SERIAL.println(F("\tI2CDevice could not write such a large buffer"));
+#endif
+    return false;
+  }
+
+  _wire->beginTransmission(_addr);
+
+  // Write the prefix data (usually an address)
+  if ((prefix_len != 0) && (prefix_buffer != nullptr)) {
+    if (_wire->write(prefix_buffer, prefix_len) != prefix_len) {
+#ifdef DEBUG_SERIAL
+      DEBUG_SERIAL.println(F("\tI2CDevice failed to write"));
+#endif
+      return false;
+    }
+  }
+
+  // Write the data itself
+  if (_wire->write(buffer, len) != len) {
+#ifdef DEBUG_SERIAL
+    DEBUG_SERIAL.println(F("\tI2CDevice failed to write"));
+#endif
+    return false;
+  }
+
+#ifdef DEBUG_SERIAL
+
+  DEBUG_SERIAL.print(F("\tI2CWRITE @ 0x"));
+  DEBUG_SERIAL.print(_addr, HEX);
+  DEBUG_SERIAL.print(F(" :: "));
+  if ((prefix_len != 0) && (prefix_buffer != nullptr)) {
+    for (uint16_t i = 0; i < prefix_len; i++) {
+      DEBUG_SERIAL.print(F("0x"));
+      DEBUG_SERIAL.print(prefix_buffer[i], HEX);
+      DEBUG_SERIAL.print(F(", "));
+    }
+  }
+  for (uint16_t i = 0; i < len; i++) {
+    DEBUG_SERIAL.print(F("0x"));
+    DEBUG_SERIAL.print(buffer[i], HEX);
+    DEBUG_SERIAL.print(F(", "));
+    if (i % 32 == 31) {
+      DEBUG_SERIAL.println();
+    }
+  }
+
+  if (stop) {
+    DEBUG_SERIAL.print("\tSTOP");
+  }
+#endif
+
+  if (_wire->endTransmission(stop) == 0) {
+#ifdef DEBUG_SERIAL
+    DEBUG_SERIAL.println();
+    // DEBUG_SERIAL.println("Sent!");
+#endif
+    return true;
+  } else {
+#ifdef DEBUG_SERIAL
+    DEBUG_SERIAL.println("\tFailed to send!");
+#endif
+    return false;
+  }
+}
+
+/*!
+ *    @brief  Read from I2C into a buffer from the I2C device.
+ *    Cannot be more than maxBufferSize() bytes.
+ *    @param  buffer Pointer to buffer of data to read into
+ *    @param  len Number of bytes from buffer to read.
+ *    @param  stop Whether to send an I2C STOP signal on read
+ *    @return True if read was successful, otherwise false.
+ */
+bool Adafruit_I2CDevice::read(uint8_t *buffer, size_t len, bool stop) {
+  size_t pos = 0;
+  while (pos < len) {
+    size_t read_len =
+        ((len - pos) > maxBufferSize()) ? maxBufferSize() : (len - pos);
+    bool read_stop = (pos < (len - read_len)) ? false : stop;
+    if (!_read(buffer + pos, read_len, read_stop))
+      return false;
+    pos += read_len;
+  }
+  return true;
+}
+
+bool Adafruit_I2CDevice::_read(uint8_t *buffer, size_t len, bool stop) {
+#if defined(TinyWireM_h)
+  size_t recv = _wire->requestFrom((uint8_t)_addr, (uint8_t)len);
+#elif defined(ARDUINO_ARCH_MEGAAVR)
+  size_t recv = _wire->requestFrom(_addr, len, stop);
+#else
+  size_t recv = _wire->requestFrom((uint8_t)_addr, (uint8_t)len, (uint8_t)stop);
+#endif
+
+  if (recv != len) {
+    // Not enough data available to fulfill our obligation!
+#ifdef DEBUG_SERIAL
+    DEBUG_SERIAL.print(F("\tI2CDevice did not receive enough data: "));
+    DEBUG_SERIAL.println(recv);
+#endif
+    return false;
+  }
+
+  for (uint16_t i = 0; i < len; i++) {
+    buffer[i] = _wire->read();
+  }
+
+#ifdef DEBUG_SERIAL
+  DEBUG_SERIAL.print(F("\tI2CREAD  @ 0x"));
+  DEBUG_SERIAL.print(_addr, HEX);
+  DEBUG_SERIAL.print(F(" :: "));
+  for (uint16_t i = 0; i < len; i++) {
+    DEBUG_SERIAL.print(F("0x"));
+    DEBUG_SERIAL.print(buffer[i], HEX);
+    DEBUG_SERIAL.print(F(", "));
+    if (len % 32 == 31) {
+      DEBUG_SERIAL.println();
+    }
+  }
+  DEBUG_SERIAL.println();
+#endif
+
+  return true;
+}
+
+/*!
+ *    @brief  Write some data, then read some data from I2C into another buffer.
+ *    Cannot be more than maxBufferSize() bytes. The buffers can point to
+ *    same/overlapping locations.
+ *    @param  write_buffer Pointer to buffer of data to write from
+ *    @param  write_len Number of bytes from buffer to write.
+ *    @param  read_buffer Pointer to buffer of data to read into.
+ *    @param  read_len Number of bytes from buffer to read.
+ *    @param  stop Whether to send an I2C STOP signal between the write and read
+ *    @return True if write & read was successful, otherwise false.
+ */
+bool Adafruit_I2CDevice::write_then_read(const uint8_t *write_buffer,
+                                         size_t write_len, uint8_t *read_buffer,
+                                         size_t read_len, bool stop) {
+  if (!write(write_buffer, write_len, stop)) {
+    return false;
+  }
+
+  return read(read_buffer, read_len);
+}
+
+/*!
+ *    @brief  Returns the 7-bit address of this device
+ *    @return The 7-bit address of this device
+ */
+uint8_t Adafruit_I2CDevice::address(void) { return _addr; }
+
+/*!
+ *    @brief  Change the I2C clock speed to desired (relies on
+ *    underlying Wire support!
+ *    @param desiredclk The desired I2C SCL frequency
+ *    @return True if this platform supports changing I2C speed.
+ *    Not necessarily that the speed was achieved!
+ */
+bool Adafruit_I2CDevice::setSpeed(uint32_t desiredclk) {
+#if defined(__AVR_ATmega328__) ||                                              \
+    defined(__AVR_ATmega328P__) // fix arduino core set clock
+  // calculate TWBR correctly
+
+  if ((F_CPU / 18) < desiredclk) {
+#ifdef DEBUG_SERIAL
+    Serial.println(F("I2C.setSpeed too high."));
+#endif
+    return false;
+  }
+  uint32_t atwbr = ((F_CPU / desiredclk) - 16) / 2;
+  if (atwbr > 16320) {
+#ifdef DEBUG_SERIAL
+    Serial.println(F("I2C.setSpeed too low."));
+#endif
+    return false;
+  }
+
+  if (atwbr <= 255) {
+    atwbr /= 1;
+    TWSR = 0x0;
+  } else if (atwbr <= 1020) {
+    atwbr /= 4;
+    TWSR = 0x1;
+  } else if (atwbr <= 4080) {
+    atwbr /= 16;
+    TWSR = 0x2;
+  } else { //  if (atwbr <= 16320)
+    atwbr /= 64;
+    TWSR = 0x3;
+  }
+  TWBR = atwbr;
+
+#ifdef DEBUG_SERIAL
+  Serial.print(F("TWSR prescaler = "));
+  Serial.println(pow(4, TWSR));
+  Serial.print(F("TWBR = "));
+  Serial.println(atwbr);
+#endif
+  return true;
+#elif (ARDUINO >= 157) && !defined(ARDUINO_STM32_FEATHER) &&                   \
+    !defined(TinyWireM_h)
+  _wire->setClock(desiredclk);
+  return true;
+
+#else
+  (void)desiredclk;
+  return false;
+#endif
+}
diff --git a/lib/Adafruit_BusIO/Adafruit_I2CDevice.h b/lib/Adafruit_BusIO/Adafruit_I2CDevice.h
new file mode 100644
index 00000000..6bda7bae
--- /dev/null
+++ b/lib/Adafruit_BusIO/Adafruit_I2CDevice.h
@@ -0,0 +1,36 @@
+#ifndef Adafruit_I2CDevice_h
+#define Adafruit_I2CDevice_h
+
+#include <Arduino.h>
+#include <Wire.h>
+
+///< The class which defines how we will talk to this device over I2C
+class Adafruit_I2CDevice {
+public:
+  Adafruit_I2CDevice(uint8_t addr, TwoWire *theWire = &Wire);
+  uint8_t address(void);
+  bool begin(bool addr_detect = true);
+  void end(void);
+  bool detected(void);
+
+  bool read(uint8_t *buffer, size_t len, bool stop = true);
+  bool write(const uint8_t *buffer, size_t len, bool stop = true,
+             const uint8_t *prefix_buffer = nullptr, size_t prefix_len = 0);
+  bool write_then_read(const uint8_t *write_buffer, size_t write_len,
+                       uint8_t *read_buffer, size_t read_len,
+                       bool stop = false);
+  bool setSpeed(uint32_t desiredclk);
+
+  /*!   @brief  How many bytes we can read in a transaction
+   *    @return The size of the Wire receive/transmit buffer */
+  size_t maxBufferSize() { return _maxBufferSize; }
+
+private:
+  uint8_t _addr;
+  TwoWire *_wire;
+  bool _begun;
+  size_t _maxBufferSize;
+  bool _read(uint8_t *buffer, size_t len, bool stop);
+};
+
+#endif // Adafruit_I2CDevice_h
diff --git a/lib/Adafruit_BusIO/Adafruit_I2CRegister.h b/lib/Adafruit_BusIO/Adafruit_I2CRegister.h
new file mode 100644
index 00000000..186850fa
--- /dev/null
+++ b/lib/Adafruit_BusIO/Adafruit_I2CRegister.h
@@ -0,0 +1,10 @@
+#ifndef _ADAFRUIT_I2C_REGISTER_H_
+#define _ADAFRUIT_I2C_REGISTER_H_
+
+#include <Adafruit_BusIO_Register.h>
+#include <Arduino.h>
+
+typedef Adafruit_BusIO_Register Adafruit_I2CRegister;
+typedef Adafruit_BusIO_RegisterBits Adafruit_I2CRegisterBits;
+
+#endif
diff --git a/lib/Adafruit_BusIO/Adafruit_SPIDevice.cpp b/lib/Adafruit_BusIO/Adafruit_SPIDevice.cpp
new file mode 100644
index 00000000..6f0069b7
--- /dev/null
+++ b/lib/Adafruit_BusIO/Adafruit_SPIDevice.cpp
@@ -0,0 +1,508 @@
+#include "Adafruit_SPIDevice.h"
+
+//#define DEBUG_SERIAL Serial
+
+/*!
+ *    @brief  Create an SPI device with the given CS pin and settings
+ *    @param  cspin The arduino pin number to use for chip select
+ *    @param  freq The SPI clock frequency to use, defaults to 1MHz
+ *    @param  dataOrder The SPI data order to use for bits within each byte,
+ * defaults to SPI_BITORDER_MSBFIRST
+ *    @param  dataMode The SPI mode to use, defaults to SPI_MODE0
+ *    @param  theSPI The SPI bus to use, defaults to &theSPI
+ */
+Adafruit_SPIDevice::Adafruit_SPIDevice(int8_t cspin, uint32_t freq,
+                                       BusIOBitOrder dataOrder,
+                                       uint8_t dataMode, SPIClass *theSPI) {
+#ifdef BUSIO_HAS_HW_SPI
+  _cs = cspin;
+  _sck = _mosi = _miso = -1;
+  _spi = theSPI;
+  _begun = false;
+  _spiSetting = new SPISettings(freq, dataOrder, dataMode);
+  _freq = freq;
+  _dataOrder = dataOrder;
+  _dataMode = dataMode;
+#else
+  // unused, but needed to suppress compiler warns
+  (void)cspin;
+  (void)freq;
+  (void)dataOrder;
+  (void)dataMode;
+  (void)theSPI;
+#endif
+}
+
+/*!
+ *    @brief  Create an SPI device with the given CS pin and settings
+ *    @param  cspin The arduino pin number to use for chip select
+ *    @param  sckpin The arduino pin number to use for SCK
+ *    @param  misopin The arduino pin number to use for MISO, set to -1 if not
+ * used
+ *    @param  mosipin The arduino pin number to use for MOSI, set to -1 if not
+ * used
+ *    @param  freq The SPI clock frequency to use, defaults to 1MHz
+ *    @param  dataOrder The SPI data order to use for bits within each byte,
+ * defaults to SPI_BITORDER_MSBFIRST
+ *    @param  dataMode The SPI mode to use, defaults to SPI_MODE0
+ */
+Adafruit_SPIDevice::Adafruit_SPIDevice(int8_t cspin, int8_t sckpin,
+                                       int8_t misopin, int8_t mosipin,
+                                       uint32_t freq, BusIOBitOrder dataOrder,
+                                       uint8_t dataMode) {
+  _cs = cspin;
+  _sck = sckpin;
+  _miso = misopin;
+  _mosi = mosipin;
+
+#ifdef BUSIO_USE_FAST_PINIO
+  csPort = (BusIO_PortReg *)portOutputRegister(digitalPinToPort(cspin));
+  csPinMask = digitalPinToBitMask(cspin);
+  if (mosipin != -1) {
+    mosiPort = (BusIO_PortReg *)portOutputRegister(digitalPinToPort(mosipin));
+    mosiPinMask = digitalPinToBitMask(mosipin);
+  }
+  if (misopin != -1) {
+    misoPort = (BusIO_PortReg *)portInputRegister(digitalPinToPort(misopin));
+    misoPinMask = digitalPinToBitMask(misopin);
+  }
+  clkPort = (BusIO_PortReg *)portOutputRegister(digitalPinToPort(sckpin));
+  clkPinMask = digitalPinToBitMask(sckpin);
+#endif
+
+  _freq = freq;
+  _dataOrder = dataOrder;
+  _dataMode = dataMode;
+  _begun = false;
+}
+
+/*!
+ *    @brief  Release memory allocated in constructors
+ */
+Adafruit_SPIDevice::~Adafruit_SPIDevice() {
+  if (_spiSetting)
+    delete _spiSetting;
+}
+
+/*!
+ *    @brief  Initializes SPI bus and sets CS pin high
+ *    @return Always returns true because there's no way to test success of SPI
+ * init
+ */
+bool Adafruit_SPIDevice::begin(void) {
+  if (_cs != -1) {
+    pinMode(_cs, OUTPUT);
+    digitalWrite(_cs, HIGH);
+  }
+
+  if (_spi) { // hardware SPI
+#ifdef BUSIO_HAS_HW_SPI
+    _spi->begin();
+#endif
+  } else {
+    pinMode(_sck, OUTPUT);
+
+    if ((_dataMode == SPI_MODE0) || (_dataMode == SPI_MODE1)) {
+      // idle low on mode 0 and 1
+      digitalWrite(_sck, LOW);
+    } else {
+      // idle high on mode 2 or 3
+      digitalWrite(_sck, HIGH);
+    }
+    if (_mosi != -1) {
+      pinMode(_mosi, OUTPUT);
+      digitalWrite(_mosi, HIGH);
+    }
+    if (_miso != -1) {
+      pinMode(_miso, INPUT);
+    }
+  }
+
+  _begun = true;
+  return true;
+}
+
+/*!
+ *    @brief  Transfer (send/receive) a buffer over hard/soft SPI, without
+ * transaction management
+ *    @param  buffer The buffer to send and receive at the same time
+ *    @param  len    The number of bytes to transfer
+ */
+void Adafruit_SPIDevice::transfer(uint8_t *buffer, size_t len) {
+  //
+  // HARDWARE SPI
+  //
+  if (_spi) {
+#ifdef BUSIO_HAS_HW_SPI
+#if defined(SPARK)
+    _spi->transfer(buffer, buffer, len, nullptr);
+#elif defined(STM32)
+    for (size_t i = 0; i < len; i++) {
+      _spi->transfer(buffer[i]);
+    }
+#else
+    _spi->transfer(buffer, len);
+#endif
+    return;
+#endif
+  }
+
+  //
+  // SOFTWARE SPI
+  //
+  uint8_t startbit;
+  if (_dataOrder == SPI_BITORDER_LSBFIRST) {
+    startbit = 0x1;
+  } else {
+    startbit = 0x80;
+  }
+
+  bool towrite, lastmosi = !(buffer[0] & startbit);
+  uint8_t bitdelay_us = (1000000 / _freq) / 2;
+
+  for (size_t i = 0; i < len; i++) {
+    uint8_t reply = 0;
+    uint8_t send = buffer[i];
+
+    /*
+    Serial.print("\tSending software SPI byte 0x");
+    Serial.print(send, HEX);
+    Serial.print(" -> 0x");
+    */
+
+    // Serial.print(send, HEX);
+    for (uint8_t b = startbit; b != 0;
+         b = (_dataOrder == SPI_BITORDER_LSBFIRST) ? b << 1 : b >> 1) {
+
+      if (bitdelay_us) {
+        delayMicroseconds(bitdelay_us);
+      }
+
+      if (_dataMode == SPI_MODE0 || _dataMode == SPI_MODE2) {
+        towrite = send & b;
+        if ((_mosi != -1) && (lastmosi != towrite)) {
+#ifdef BUSIO_USE_FAST_PINIO
+          if (towrite)
+            *mosiPort |= mosiPinMask;
+          else
+            *mosiPort &= ~mosiPinMask;
+#else
+          digitalWrite(_mosi, towrite);
+#endif
+          lastmosi = towrite;
+        }
+
+#ifdef BUSIO_USE_FAST_PINIO
+        *clkPort |= clkPinMask; // Clock high
+#else
+        digitalWrite(_sck, HIGH);
+#endif
+
+        if (bitdelay_us) {
+          delayMicroseconds(bitdelay_us);
+        }
+
+        if (_miso != -1) {
+#ifdef BUSIO_USE_FAST_PINIO
+          if (*misoPort & misoPinMask) {
+#else
+          if (digitalRead(_miso)) {
+#endif
+            reply |= b;
+          }
+        }
+
+#ifdef BUSIO_USE_FAST_PINIO
+        *clkPort &= ~clkPinMask; // Clock low
+#else
+        digitalWrite(_sck, LOW);
+#endif
+      } else { // if (_dataMode == SPI_MODE1 || _dataMode == SPI_MODE3)
+
+#ifdef BUSIO_USE_FAST_PINIO
+        *clkPort |= clkPinMask; // Clock high
+#else
+        digitalWrite(_sck, HIGH);
+#endif
+
+        if (bitdelay_us) {
+          delayMicroseconds(bitdelay_us);
+        }
+
+        if (_mosi != -1) {
+#ifdef BUSIO_USE_FAST_PINIO
+          if (send & b)
+            *mosiPort |= mosiPinMask;
+          else
+            *mosiPort &= ~mosiPinMask;
+#else
+          digitalWrite(_mosi, send & b);
+#endif
+        }
+
+#ifdef BUSIO_USE_FAST_PINIO
+        *clkPort &= ~clkPinMask; // Clock low
+#else
+        digitalWrite(_sck, LOW);
+#endif
+
+        if (_miso != -1) {
+#ifdef BUSIO_USE_FAST_PINIO
+          if (*misoPort & misoPinMask) {
+#else
+          if (digitalRead(_miso)) {
+#endif
+            reply |= b;
+          }
+        }
+      }
+      if (_miso != -1) {
+        buffer[i] = reply;
+      }
+    }
+  }
+  return;
+}
+
+/*!
+ *    @brief  Transfer (send/receive) one byte over hard/soft SPI, without
+ * transaction management
+ *    @param  send The byte to send
+ *    @return The byte received while transmitting
+ */
+uint8_t Adafruit_SPIDevice::transfer(uint8_t send) {
+  uint8_t data = send;
+  transfer(&data, 1);
+  return data;
+}
+
+/*!
+ *    @brief  Manually begin a transaction (calls beginTransaction if hardware
+ * SPI)
+ */
+void Adafruit_SPIDevice::beginTransaction(void) {
+  if (_spi) {
+#ifdef BUSIO_HAS_HW_SPI
+    _spi->beginTransaction(*_spiSetting);
+#endif
+  }
+}
+
+/*!
+ *    @brief  Manually end a transaction (calls endTransaction if hardware SPI)
+ */
+void Adafruit_SPIDevice::endTransaction(void) {
+  if (_spi) {
+#ifdef BUSIO_HAS_HW_SPI
+    _spi->endTransaction();
+#endif
+  }
+}
+
+/*!
+ *    @brief  Assert/Deassert the CS pin if it is defined
+ *    @param  value The state the CS is set to
+ */
+void Adafruit_SPIDevice::setChipSelect(int value) {
+  if (_cs != -1) {
+    digitalWrite(_cs, value);
+  }
+}
+
+/*!
+ *    @brief  Write a buffer or two to the SPI device, with transaction
+ * management.
+ *    @brief  Manually begin a transaction (calls beginTransaction if hardware
+ *            SPI) with asserting the CS pin
+ */
+void Adafruit_SPIDevice::beginTransactionWithAssertingCS() {
+  beginTransaction();
+  setChipSelect(LOW);
+}
+
+/*!
+ *    @brief  Manually end a transaction (calls endTransaction if hardware SPI)
+ *            with deasserting the CS pin
+ */
+void Adafruit_SPIDevice::endTransactionWithDeassertingCS() {
+  setChipSelect(HIGH);
+  endTransaction();
+}
+
+/*!
+ *    @brief  Write a buffer or two to the SPI device, with transaction
+ * management.
+ *    @param  buffer Pointer to buffer of data to write
+ *    @param  len Number of bytes from buffer to write
+ *    @param  prefix_buffer Pointer to optional array of data to write before
+ * buffer.
+ *    @param  prefix_len Number of bytes from prefix buffer to write
+ *    @return Always returns true because there's no way to test success of SPI
+ * writes
+ */
+bool Adafruit_SPIDevice::write(const uint8_t *buffer, size_t len,
+                               const uint8_t *prefix_buffer,
+                               size_t prefix_len) {
+  beginTransactionWithAssertingCS();
+
+  // do the writing
+#if defined(ARDUINO_ARCH_ESP32)
+  if (_spi) {
+    if (prefix_len > 0) {
+      _spi->transferBytes(prefix_buffer, nullptr, prefix_len);
+    }
+    if (len > 0) {
+      _spi->transferBytes(buffer, nullptr, len);
+    }
+  } else
+#endif
+  {
+    for (size_t i = 0; i < prefix_len; i++) {
+      transfer(prefix_buffer[i]);
+    }
+    for (size_t i = 0; i < len; i++) {
+      transfer(buffer[i]);
+    }
+  }
+  endTransactionWithDeassertingCS();
+
+#ifdef DEBUG_SERIAL
+  DEBUG_SERIAL.print(F("\tSPIDevice Wrote: "));
+  if ((prefix_len != 0) && (prefix_buffer != nullptr)) {
+    for (uint16_t i = 0; i < prefix_len; i++) {
+      DEBUG_SERIAL.print(F("0x"));
+      DEBUG_SERIAL.print(prefix_buffer[i], HEX);
+      DEBUG_SERIAL.print(F(", "));
+    }
+  }
+  for (uint16_t i = 0; i < len; i++) {
+    DEBUG_SERIAL.print(F("0x"));
+    DEBUG_SERIAL.print(buffer[i], HEX);
+    DEBUG_SERIAL.print(F(", "));
+    if (i % 32 == 31) {
+      DEBUG_SERIAL.println();
+    }
+  }
+  DEBUG_SERIAL.println();
+#endif
+
+  return true;
+}
+
+/*!
+ *    @brief  Read from SPI into a buffer from the SPI device, with transaction
+ * management.
+ *    @param  buffer Pointer to buffer of data to read into
+ *    @param  len Number of bytes from buffer to read.
+ *    @param  sendvalue The 8-bits of data to write when doing the data read,
+ * defaults to 0xFF
+ *    @return Always returns true because there's no way to test success of SPI
+ * writes
+ */
+bool Adafruit_SPIDevice::read(uint8_t *buffer, size_t len, uint8_t sendvalue) {
+  memset(buffer, sendvalue, len); // clear out existing buffer
+
+  beginTransactionWithAssertingCS();
+  transfer(buffer, len);
+  endTransactionWithDeassertingCS();
+
+#ifdef DEBUG_SERIAL
+  DEBUG_SERIAL.print(F("\tSPIDevice Read: "));
+  for (uint16_t i = 0; i < len; i++) {
+    DEBUG_SERIAL.print(F("0x"));
+    DEBUG_SERIAL.print(buffer[i], HEX);
+    DEBUG_SERIAL.print(F(", "));
+    if (len % 32 == 31) {
+      DEBUG_SERIAL.println();
+    }
+  }
+  DEBUG_SERIAL.println();
+#endif
+
+  return true;
+}
+
+/*!
+ *    @brief  Write some data, then read some data from SPI into another buffer,
+ * with transaction management. The buffers can point to same/overlapping
+ * locations. This does not transmit-receive at the same time!
+ *    @param  write_buffer Pointer to buffer of data to write from
+ *    @param  write_len Number of bytes from buffer to write.
+ *    @param  read_buffer Pointer to buffer of data to read into.
+ *    @param  read_len Number of bytes from buffer to read.
+ *    @param  sendvalue The 8-bits of data to write when doing the data read,
+ * defaults to 0xFF
+ *    @return Always returns true because there's no way to test success of SPI
+ * writes
+ */
+bool Adafruit_SPIDevice::write_then_read(const uint8_t *write_buffer,
+                                         size_t write_len, uint8_t *read_buffer,
+                                         size_t read_len, uint8_t sendvalue) {
+  beginTransactionWithAssertingCS();
+  // do the writing
+#if defined(ARDUINO_ARCH_ESP32)
+  if (_spi) {
+    if (write_len > 0) {
+      _spi->transferBytes(write_buffer, nullptr, write_len);
+    }
+  } else
+#endif
+  {
+    for (size_t i = 0; i < write_len; i++) {
+      transfer(write_buffer[i]);
+    }
+  }
+
+#ifdef DEBUG_SERIAL
+  DEBUG_SERIAL.print(F("\tSPIDevice Wrote: "));
+  for (uint16_t i = 0; i < write_len; i++) {
+    DEBUG_SERIAL.print(F("0x"));
+    DEBUG_SERIAL.print(write_buffer[i], HEX);
+    DEBUG_SERIAL.print(F(", "));
+    if (write_len % 32 == 31) {
+      DEBUG_SERIAL.println();
+    }
+  }
+  DEBUG_SERIAL.println();
+#endif
+
+  // do the reading
+  for (size_t i = 0; i < read_len; i++) {
+    read_buffer[i] = transfer(sendvalue);
+  }
+
+#ifdef DEBUG_SERIAL
+  DEBUG_SERIAL.print(F("\tSPIDevice Read: "));
+  for (uint16_t i = 0; i < read_len; i++) {
+    DEBUG_SERIAL.print(F("0x"));
+    DEBUG_SERIAL.print(read_buffer[i], HEX);
+    DEBUG_SERIAL.print(F(", "));
+    if (read_len % 32 == 31) {
+      DEBUG_SERIAL.println();
+    }
+  }
+  DEBUG_SERIAL.println();
+#endif
+
+  endTransactionWithDeassertingCS();
+
+  return true;
+}
+
+/*!
+ *    @brief  Write some data and read some data at the same time from SPI
+ * into the same buffer, with transaction management. This is basicaly a wrapper
+ * for transfer() with CS-pin and transaction management. This /does/
+ * transmit-receive at the same time!
+ *    @param  buffer Pointer to buffer of data to write/read to/from
+ *    @param  len Number of bytes from buffer to write/read.
+ *    @return Always returns true because there's no way to test success of SPI
+ * writes
+ */
+bool Adafruit_SPIDevice::write_and_read(uint8_t *buffer, size_t len) {
+  beginTransactionWithAssertingCS();
+  transfer(buffer, len);
+  endTransactionWithDeassertingCS();
+
+  return true;
+}
diff --git a/lib/Adafruit_BusIO/Adafruit_SPIDevice.h b/lib/Adafruit_BusIO/Adafruit_SPIDevice.h
new file mode 100644
index 00000000..7a6c0f5b
--- /dev/null
+++ b/lib/Adafruit_BusIO/Adafruit_SPIDevice.h
@@ -0,0 +1,138 @@
+#ifndef Adafruit_SPIDevice_h
+#define Adafruit_SPIDevice_h
+
+#include <Arduino.h>
+
+#if !defined(SPI_INTERFACES_COUNT) ||                                          \
+    (defined(SPI_INTERFACES_COUNT) && (SPI_INTERFACES_COUNT > 0))
+// HW SPI available
+#include <SPI.h>
+#define BUSIO_HAS_HW_SPI
+#else
+// SW SPI ONLY
+enum { SPI_MODE0, SPI_MODE1, SPI_MODE2, _SPI_MODE4 };
+typedef uint8_t SPIClass;
+#endif
+
+// some modern SPI definitions don't have BitOrder enum
+#if (defined(__AVR__) && !defined(ARDUINO_ARCH_MEGAAVR)) ||                    \
+    defined(ESP8266) || defined(TEENSYDUINO) || defined(SPARK) ||              \
+    defined(ARDUINO_ARCH_SPRESENSE) || defined(MEGATINYCORE) ||                \
+    defined(DXCORE) || defined(ARDUINO_AVR_ATmega4809) ||                      \
+    defined(ARDUINO_AVR_ATmega4808) || defined(ARDUINO_AVR_ATmega3209) ||      \
+    defined(ARDUINO_AVR_ATmega3208) || defined(ARDUINO_AVR_ATmega1609) ||      \
+    defined(ARDUINO_AVR_ATmega1608) || defined(ARDUINO_AVR_ATmega809) ||       \
+    defined(ARDUINO_AVR_ATmega808) || defined(ARDUINO_ARCH_ARC32)
+
+typedef enum _BitOrder {
+  SPI_BITORDER_MSBFIRST = MSBFIRST,
+  SPI_BITORDER_LSBFIRST = LSBFIRST,
+} BusIOBitOrder;
+
+#elif defined(ESP32) || defined(__ASR6501__) || defined(__ASR6502__)
+
+// some modern SPI definitions don't have BitOrder enum and have different SPI
+// mode defines
+typedef enum _BitOrder {
+  SPI_BITORDER_MSBFIRST = SPI_MSBFIRST,
+  SPI_BITORDER_LSBFIRST = SPI_LSBFIRST,
+} BusIOBitOrder;
+
+#else
+// Some platforms have a BitOrder enum but its named MSBFIRST/LSBFIRST
+#define SPI_BITORDER_MSBFIRST MSBFIRST
+#define SPI_BITORDER_LSBFIRST LSBFIRST
+typedef BitOrder BusIOBitOrder;
+#endif
+
+#if defined(__IMXRT1062__) // Teensy 4.x
+// *Warning* I disabled the usage of FAST_PINIO as the set/clear operations
+// used in the cpp file are not atomic and can effect multiple IO pins
+// and if an interrupt happens in between the time the code reads the register
+//  and writes out the updated value, that changes one or more other IO pins
+// on that same IO port, those change will be clobbered when the updated
+// values are written back.  A fast version can be implemented that uses the
+// ports set and clear registers which are atomic.
+// typedef volatile uint32_t BusIO_PortReg;
+// typedef uint32_t BusIO_PortMask;
+//#define BUSIO_USE_FAST_PINIO
+
+#elif defined(__AVR__) || defined(TEENSYDUINO)
+typedef volatile uint8_t BusIO_PortReg;
+typedef uint8_t BusIO_PortMask;
+#define BUSIO_USE_FAST_PINIO
+
+#elif defined(ESP8266) || defined(ESP32) || defined(__SAM3X8E__) ||            \
+    defined(ARDUINO_ARCH_SAMD)
+typedef volatile uint32_t BusIO_PortReg;
+typedef uint32_t BusIO_PortMask;
+#define BUSIO_USE_FAST_PINIO
+
+#elif (defined(__arm__) || defined(ARDUINO_FEATHER52)) &&                      \
+    !defined(ARDUINO_ARCH_MBED) && !defined(ARDUINO_ARCH_RP2040)
+typedef volatile uint32_t BusIO_PortReg;
+typedef uint32_t BusIO_PortMask;
+#if !defined(__ASR6501__) && !defined(__ASR6502__)
+#define BUSIO_USE_FAST_PINIO
+#endif
+
+#else
+#undef BUSIO_USE_FAST_PINIO
+#endif
+
+/**! The class which defines how we will talk to this device over SPI **/
+class Adafruit_SPIDevice {
+public:
+#ifdef BUSIO_HAS_HW_SPI
+  Adafruit_SPIDevice(int8_t cspin, uint32_t freq = 1000000,
+                     BusIOBitOrder dataOrder = SPI_BITORDER_MSBFIRST,
+                     uint8_t dataMode = SPI_MODE0, SPIClass *theSPI = &SPI);
+#else
+  Adafruit_SPIDevice(int8_t cspin, uint32_t freq = 1000000,
+                     BusIOBitOrder dataOrder = SPI_BITORDER_MSBFIRST,
+                     uint8_t dataMode = SPI_MODE0, SPIClass *theSPI = nullptr);
+#endif
+  Adafruit_SPIDevice(int8_t cspin, int8_t sck, int8_t miso, int8_t mosi,
+                     uint32_t freq = 1000000,
+                     BusIOBitOrder dataOrder = SPI_BITORDER_MSBFIRST,
+                     uint8_t dataMode = SPI_MODE0);
+  ~Adafruit_SPIDevice();
+
+  bool begin(void);
+  bool read(uint8_t *buffer, size_t len, uint8_t sendvalue = 0xFF);
+  bool write(const uint8_t *buffer, size_t len,
+             const uint8_t *prefix_buffer = nullptr, size_t prefix_len = 0);
+  bool write_then_read(const uint8_t *write_buffer, size_t write_len,
+                       uint8_t *read_buffer, size_t read_len,
+                       uint8_t sendvalue = 0xFF);
+  bool write_and_read(uint8_t *buffer, size_t len);
+
+  uint8_t transfer(uint8_t send);
+  void transfer(uint8_t *buffer, size_t len);
+  void beginTransaction(void);
+  void endTransaction(void);
+  void beginTransactionWithAssertingCS();
+  void endTransactionWithDeassertingCS();
+
+private:
+#ifdef BUSIO_HAS_HW_SPI
+  SPIClass *_spi = nullptr;
+  SPISettings *_spiSetting = nullptr;
+#else
+  uint8_t *_spi = nullptr;
+  uint8_t *_spiSetting = nullptr;
+#endif
+  uint32_t _freq;
+  BusIOBitOrder _dataOrder;
+  uint8_t _dataMode;
+  void setChipSelect(int value);
+
+  int8_t _cs, _sck, _mosi, _miso;
+#ifdef BUSIO_USE_FAST_PINIO
+  BusIO_PortReg *mosiPort, *clkPort, *misoPort, *csPort;
+  BusIO_PortMask mosiPinMask, misoPinMask, clkPinMask, csPinMask;
+#endif
+  bool _begun;
+};
+
+#endif // Adafruit_SPIDevice_h
diff --git a/lib/Adafruit_BusIO/CMakeLists.txt b/lib/Adafruit_BusIO/CMakeLists.txt
new file mode 100644
index 00000000..880b1aa9
--- /dev/null
+++ b/lib/Adafruit_BusIO/CMakeLists.txt
@@ -0,0 +1,11 @@
+# Adafruit Bus IO Library
+# https://github.com/adafruit/Adafruit_BusIO
+# MIT License
+
+cmake_minimum_required(VERSION 3.5)
+
+idf_component_register(SRCS "Adafruit_I2CDevice.cpp" "Adafruit_BusIO_Register.cpp" "Adafruit_SPIDevice.cpp" 
+                       INCLUDE_DIRS "."
+                       REQUIRES arduino)
+
+project(Adafruit_BusIO)
diff --git a/lib/Adafruit_BusIO/LICENSE b/lib/Adafruit_BusIO/LICENSE
new file mode 100644
index 00000000..860e3e28
--- /dev/null
+++ b/lib/Adafruit_BusIO/LICENSE
@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2017 Adafruit Industries
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
\ No newline at end of file
diff --git a/lib/Adafruit_BusIO/README.md b/lib/Adafruit_BusIO/README.md
new file mode 100644
index 00000000..1cc06a15
--- /dev/null
+++ b/lib/Adafruit_BusIO/README.md
@@ -0,0 +1,8 @@
+# Adafruit Bus IO Library [![Build Status](https://github.com/adafruit/Adafruit_BusIO/workflows/Arduino%20Library%20CI/badge.svg)](https://github.com/adafruit/Adafruit_BusIO/actions)
+
+
+This is a helper library to abstract away I2C & SPI transactions and registers
+
+Adafruit invests time and resources providing this open source code, please support Adafruit and open-source hardware by purchasing products from Adafruit!
+
+MIT license, all text above must be included in any redistribution
diff --git a/lib/Adafruit_BusIO/component.mk b/lib/Adafruit_BusIO/component.mk
new file mode 100644
index 00000000..049f190e
--- /dev/null
+++ b/lib/Adafruit_BusIO/component.mk
@@ -0,0 +1 @@
+COMPONENT_ADD_INCLUDEDIRS = .
diff --git a/lib/Adafruit_BusIO/examples/i2c_address_detect/i2c_address_detect.ino b/lib/Adafruit_BusIO/examples/i2c_address_detect/i2c_address_detect.ino
new file mode 100644
index 00000000..b1505254
--- /dev/null
+++ b/lib/Adafruit_BusIO/examples/i2c_address_detect/i2c_address_detect.ino
@@ -0,0 +1,21 @@
+#include <Adafruit_I2CDevice.h>
+
+Adafruit_I2CDevice i2c_dev = Adafruit_I2CDevice(0x10);
+
+void setup() {
+  while (!Serial) { delay(10); }
+  Serial.begin(115200);
+  Serial.println("I2C address detection test");
+
+  if (!i2c_dev.begin()) {
+    Serial.print("Did not find device at 0x");
+    Serial.println(i2c_dev.address(), HEX);
+    while (1);
+  }
+  Serial.print("Device found on address 0x");
+  Serial.println(i2c_dev.address(), HEX);
+}
+
+void loop() {
+  
+}
diff --git a/lib/Adafruit_BusIO/examples/i2c_readwrite/i2c_readwrite.ino b/lib/Adafruit_BusIO/examples/i2c_readwrite/i2c_readwrite.ino
new file mode 100644
index 00000000..909cf311
--- /dev/null
+++ b/lib/Adafruit_BusIO/examples/i2c_readwrite/i2c_readwrite.ino
@@ -0,0 +1,41 @@
+#include <Adafruit_I2CDevice.h>
+
+#define I2C_ADDRESS 0x60
+Adafruit_I2CDevice i2c_dev = Adafruit_I2CDevice(I2C_ADDRESS);
+
+
+void setup() {
+  while (!Serial) { delay(10); }
+  Serial.begin(115200);
+  Serial.println("I2C device read and write test");
+
+  if (!i2c_dev.begin()) {
+    Serial.print("Did not find device at 0x");
+    Serial.println(i2c_dev.address(), HEX);
+    while (1);
+  }
+  Serial.print("Device found on address 0x");
+  Serial.println(i2c_dev.address(), HEX);
+
+  uint8_t buffer[32];
+  // Try to read 32 bytes
+  i2c_dev.read(buffer, 32);
+  Serial.print("Read: ");
+  for (uint8_t i=0; i<32; i++) {
+    Serial.print("0x"); Serial.print(buffer[i], HEX); Serial.print(", ");
+  }
+  Serial.println();
+
+  // read a register by writing first, then reading
+  buffer[0] = 0x0C;  // we'll reuse the same buffer
+  i2c_dev.write_then_read(buffer, 1, buffer, 2, false);
+  Serial.print("Write then Read: ");
+  for (uint8_t i=0; i<2; i++) {
+    Serial.print("0x"); Serial.print(buffer[i], HEX); Serial.print(", ");
+  }
+  Serial.println();
+}
+
+void loop() {
+  
+}
diff --git a/lib/Adafruit_BusIO/examples/i2c_registers/i2c_registers.ino b/lib/Adafruit_BusIO/examples/i2c_registers/i2c_registers.ino
new file mode 100644
index 00000000..41a30436
--- /dev/null
+++ b/lib/Adafruit_BusIO/examples/i2c_registers/i2c_registers.ino
@@ -0,0 +1,38 @@
+#include <Adafruit_I2CDevice.h>
+#include <Adafruit_BusIO_Register.h>
+
+#define I2C_ADDRESS 0x60
+Adafruit_I2CDevice i2c_dev = Adafruit_I2CDevice(I2C_ADDRESS);
+
+
+void setup() {
+  while (!Serial) { delay(10); }
+  Serial.begin(115200);
+  Serial.println("I2C device register test");
+
+  if (!i2c_dev.begin()) {
+    Serial.print("Did not find device at 0x");
+    Serial.println(i2c_dev.address(), HEX);
+    while (1);
+  }
+  Serial.print("Device found on address 0x");
+  Serial.println(i2c_dev.address(), HEX);
+
+  Adafruit_BusIO_Register id_reg = Adafruit_BusIO_Register(&i2c_dev, 0x0C, 2, LSBFIRST);
+  uint16_t id;
+  id_reg.read(&id);
+  Serial.print("ID register = 0x"); Serial.println(id, HEX);
+
+  Adafruit_BusIO_Register thresh_reg = Adafruit_BusIO_Register(&i2c_dev, 0x01, 2, LSBFIRST);
+  uint16_t thresh;
+  thresh_reg.read(&thresh);
+  Serial.print("Initial threshold register = 0x"); Serial.println(thresh, HEX);
+
+  thresh_reg.write(~thresh);
+
+  Serial.print("Post threshold register = 0x"); Serial.println(thresh_reg.read(), HEX);
+}
+
+void loop() {
+  
+}
\ No newline at end of file
diff --git a/lib/Adafruit_BusIO/examples/i2corspi_register/i2corspi_register.ino b/lib/Adafruit_BusIO/examples/i2corspi_register/i2corspi_register.ino
new file mode 100644
index 00000000..992a2e00
--- /dev/null
+++ b/lib/Adafruit_BusIO/examples/i2corspi_register/i2corspi_register.ino
@@ -0,0 +1,38 @@
+#include <Adafruit_BusIO_Register.h>
+
+// Define which interface to use by setting the unused interface to NULL!
+
+#define SPIDEVICE_CS 10
+Adafruit_SPIDevice *spi_dev = NULL; // new Adafruit_SPIDevice(SPIDEVICE_CS);
+
+#define I2C_ADDRESS 0x5D
+Adafruit_I2CDevice *i2c_dev = new Adafruit_I2CDevice(I2C_ADDRESS);
+
+void setup() {
+  while (!Serial) { delay(10); }
+  Serial.begin(115200);
+  Serial.println("I2C or SPI device register test");
+
+  if (spi_dev && !spi_dev->begin()) {
+    Serial.println("Could not initialize SPI device");
+  }
+
+  if (i2c_dev) {
+    if (i2c_dev->begin()) {
+      Serial.print("Device found on I2C address 0x");
+      Serial.println(i2c_dev->address(), HEX);
+    } else {
+      Serial.print("Did not find I2C device at 0x");
+      Serial.println(i2c_dev->address(), HEX);
+    }
+  }
+
+  Adafruit_BusIO_Register id_reg = Adafruit_BusIO_Register(i2c_dev, spi_dev, ADDRBIT8_HIGH_TOREAD, 0x0F);
+  uint8_t id=0;
+  id_reg.read(&id);
+  Serial.print("ID register = 0x"); Serial.println(id, HEX);
+}
+
+void loop() {
+  
+}
diff --git a/lib/Adafruit_BusIO/examples/spi_modetest/spi_modetest.ino b/lib/Adafruit_BusIO/examples/spi_modetest/spi_modetest.ino
new file mode 100644
index 00000000..10168c5f
--- /dev/null
+++ b/lib/Adafruit_BusIO/examples/spi_modetest/spi_modetest.ino
@@ -0,0 +1,29 @@
+#include <Adafruit_SPIDevice.h>
+
+#define SPIDEVICE_CS 10
+Adafruit_SPIDevice spi_dev = Adafruit_SPIDevice(SPIDEVICE_CS, 100000, SPI_BITORDER_MSBFIRST, SPI_MODE1);
+//Adafruit_SPIDevice spi_dev = Adafruit_SPIDevice(SPIDEVICE_CS, 13, 12, 11, 100000, SPI_BITORDER_MSBFIRST, SPI_MODE1);
+
+
+void setup() {
+  while (!Serial) { delay(10); }
+  Serial.begin(115200);
+  Serial.println("SPI device mode test");
+
+  if (!spi_dev.begin()) {
+    Serial.println("Could not initialize SPI device");
+    while (1);
+  }
+}
+
+void loop() {
+  Serial.println("\n\nTransfer test");
+  for (uint16_t x=0; x<=0xFF; x++) {
+    uint8_t i = x;   
+    Serial.print("0x"); Serial.print(i, HEX); 
+    spi_dev.read(&i, 1, i);
+    Serial.print("/"); Serial.print(i, HEX);
+    Serial.print(", ");
+    delay(25);
+  }
+}
\ No newline at end of file
diff --git a/lib/Adafruit_BusIO/examples/spi_readwrite/spi_readwrite.ino b/lib/Adafruit_BusIO/examples/spi_readwrite/spi_readwrite.ino
new file mode 100644
index 00000000..6f2c063f
--- /dev/null
+++ b/lib/Adafruit_BusIO/examples/spi_readwrite/spi_readwrite.ino
@@ -0,0 +1,39 @@
+#include <Adafruit_SPIDevice.h>
+
+#define SPIDEVICE_CS 10
+Adafruit_SPIDevice spi_dev = Adafruit_SPIDevice(SPIDEVICE_CS);
+
+
+void setup() {
+  while (!Serial) { delay(10); }
+  Serial.begin(115200);
+  Serial.println("SPI device read and write test");
+
+  if (!spi_dev.begin()) {
+    Serial.println("Could not initialize SPI device");
+    while (1);
+  }
+
+  uint8_t buffer[32];
+
+  // Try to read 32 bytes
+  spi_dev.read(buffer, 32);
+  Serial.print("Read: ");
+  for (uint8_t i=0; i<32; i++) {
+    Serial.print("0x"); Serial.print(buffer[i], HEX); Serial.print(", ");
+  }
+  Serial.println();
+
+  // read a register by writing first, then reading
+  buffer[0] = 0x8F;  // we'll reuse the same buffer
+  spi_dev.write_then_read(buffer, 1, buffer, 2, false);
+  Serial.print("Write then Read: ");
+  for (uint8_t i=0; i<2; i++) {
+    Serial.print("0x"); Serial.print(buffer[i], HEX); Serial.print(", ");
+  }
+  Serial.println();
+}
+
+void loop() {
+  
+}
diff --git a/lib/Adafruit_BusIO/examples/spi_register_bits/spi_register_bits.ino b/lib/Adafruit_BusIO/examples/spi_register_bits/spi_register_bits.ino
new file mode 100644
index 00000000..e70a17b3
--- /dev/null
+++ b/lib/Adafruit_BusIO/examples/spi_register_bits/spi_register_bits.ino
@@ -0,0 +1,192 @@
+/*************************************************** 
+
+  This is an example for how to use Adafruit_BusIO_RegisterBits from Adafruit_BusIO library.
+
+  Designed specifically to work with the Adafruit RTD Sensor
+  ----> https://www.adafruit.com/products/3328
+  uisng a MAX31865 RTD-to-Digital Converter
+  ----> https://datasheets.maximintegrated.com/en/ds/MAX31865.pdf
+
+  This sensor uses SPI to communicate, 4 pins are required to  
+  interface.
+  A fifth pin helps to detect when a new conversion is ready.
+
+  Adafruit invests time and resources providing this open source code, 
+  please support Adafruit and open-source hardware by purchasing 
+  products from Adafruit!
+
+  Example written (2020/3) by Andreas Hardtung/AnHard.  
+  BSD license, all text above must be included in any redistribution
+ ****************************************************/
+
+#include <Adafruit_BusIO_Register.h>
+#include <Adafruit_SPIDevice.h>
+
+#define MAX31865_SPI_SPEED    (5000000)
+#define MAX31865_SPI_BITORDER (SPI_BITORDER_MSBFIRST)
+#define MAX31865_SPI_MODE     (SPI_MODE1)
+
+#define MAX31865_SPI_CS       (10)
+#define MAX31865_READY_PIN    (2)
+
+
+Adafruit_SPIDevice spi_dev = Adafruit_SPIDevice( MAX31865_SPI_CS, MAX31865_SPI_SPEED, MAX31865_SPI_BITORDER, MAX31865_SPI_MODE, &SPI); // Hardware SPI
+// Adafruit_SPIDevice spi_dev = Adafruit_SPIDevice( MAX31865_SPI_CS, 13, 12, 11, MAX31865_SPI_SPEED, MAX31865_SPI_BITORDER, MAX31865_SPI_MODE); // Software SPI
+
+// MAX31865 chip related *********************************************************************************************
+Adafruit_BusIO_Register     config_reg  = Adafruit_BusIO_Register(&spi_dev, 0x00, ADDRBIT8_HIGH_TOWRITE, 1, MSBFIRST);
+Adafruit_BusIO_RegisterBits   bias_bit  = Adafruit_BusIO_RegisterBits(&config_reg, 1, 7);
+Adafruit_BusIO_RegisterBits   auto_bit  = Adafruit_BusIO_RegisterBits(&config_reg, 1, 6);
+Adafruit_BusIO_RegisterBits   oneS_bit  = Adafruit_BusIO_RegisterBits(&config_reg, 1, 5);
+Adafruit_BusIO_RegisterBits   wire_bit  = Adafruit_BusIO_RegisterBits(&config_reg, 1, 4);
+Adafruit_BusIO_RegisterBits faultT_bits = Adafruit_BusIO_RegisterBits(&config_reg, 2, 2);
+Adafruit_BusIO_RegisterBits faultR_bit  = Adafruit_BusIO_RegisterBits(&config_reg, 1, 1);
+Adafruit_BusIO_RegisterBits fi50hz_bit  = Adafruit_BusIO_RegisterBits(&config_reg, 1, 0);
+
+Adafruit_BusIO_Register     rRatio_reg  = Adafruit_BusIO_Register(&spi_dev, 0x01, ADDRBIT8_HIGH_TOWRITE, 2, MSBFIRST);
+Adafruit_BusIO_RegisterBits rRatio_bits = Adafruit_BusIO_RegisterBits(&rRatio_reg, 15, 1);
+Adafruit_BusIO_RegisterBits  fault_bit  = Adafruit_BusIO_RegisterBits(&rRatio_reg,  1, 0);
+
+Adafruit_BusIO_Register      maxRratio_reg = Adafruit_BusIO_Register(&spi_dev, 0x03, ADDRBIT8_HIGH_TOWRITE, 2, MSBFIRST);
+Adafruit_BusIO_RegisterBits maxRratio_bits = Adafruit_BusIO_RegisterBits(&maxRratio_reg, 15, 1);
+
+Adafruit_BusIO_Register      minRratio_reg = Adafruit_BusIO_Register(&spi_dev, 0x05, ADDRBIT8_HIGH_TOWRITE, 2, MSBFIRST);
+Adafruit_BusIO_RegisterBits minRratio_bits = Adafruit_BusIO_RegisterBits(&minRratio_reg, 15, 1);
+
+Adafruit_BusIO_Register                fault_reg = Adafruit_BusIO_Register(&spi_dev, 0x07, ADDRBIT8_HIGH_TOWRITE, 1, MSBFIRST);
+Adafruit_BusIO_RegisterBits range_high_fault_bit = Adafruit_BusIO_RegisterBits(&fault_reg, 1, 7);
+Adafruit_BusIO_RegisterBits  range_low_fault_bit = Adafruit_BusIO_RegisterBits(&fault_reg, 1, 6);
+Adafruit_BusIO_RegisterBits refin_high_fault_bit = Adafruit_BusIO_RegisterBits(&fault_reg, 1, 5);
+Adafruit_BusIO_RegisterBits  refin_low_fault_bit = Adafruit_BusIO_RegisterBits(&fault_reg, 1, 4);
+Adafruit_BusIO_RegisterBits  rtdin_low_fault_bit = Adafruit_BusIO_RegisterBits(&fault_reg, 1, 3);
+Adafruit_BusIO_RegisterBits    voltage_fault_bit = Adafruit_BusIO_RegisterBits(&fault_reg, 1, 2);
+
+// Print the details of the configuration register.
+void printConfig( void ) {
+  Serial.print("BIAS: ");         if (bias_bit.read() )   Serial.print("ON");   else Serial.print("OFF");
+  Serial.print(", AUTO: ");       if (auto_bit.read() )   Serial.print("ON");   else Serial.print("OFF");
+  Serial.print(", ONES: ");       if (oneS_bit.read() )   Serial.print("ON");   else Serial.print("OFF");
+  Serial.print(", WIRE: ");       if (wire_bit.read() )   Serial.print("3");    else Serial.print("2/4");
+  Serial.print(", FAULTCLEAR: "); if (faultR_bit.read() ) Serial.print("ON");   else Serial.print("OFF");
+  Serial.print(", ");             if (fi50hz_bit.read() ) Serial.print("50HZ"); else Serial.print("60HZ");
+  Serial.println();
+}
+
+// Check and print faults. Then clear them.
+void checkFaults( void ) {
+  if (fault_bit.read()) {
+    Serial.print("MAX: "); Serial.println(maxRratio_bits.read());
+    Serial.print("VAL: "); Serial.println(   rRatio_bits.read());
+    Serial.print("MIN: "); Serial.println(minRratio_bits.read());
+
+    if (range_high_fault_bit.read() ) Serial.println("Range high fault");
+    if ( range_low_fault_bit.read() ) Serial.println("Range low fault");
+    if (refin_high_fault_bit.read() ) Serial.println("REFIN high fault");
+    if ( refin_low_fault_bit.read() ) Serial.println("REFIN low fault");
+    if ( rtdin_low_fault_bit.read() ) Serial.println("RTDIN low fault");
+    if (   voltage_fault_bit.read() ) Serial.println("Voltage fault");
+
+    faultR_bit.write(1); // clear fault
+  }
+}
+
+void setup() {
+  #if (MAX31865_1_READY_PIN != -1)
+    pinMode(MAX31865_READY_PIN ,INPUT_PULLUP);
+  #endif
+
+  while (!Serial) { delay(10); }
+  Serial.begin(115200);
+  Serial.println("SPI Adafruit_BusIO_RegisterBits test on MAX31865");
+
+  if (!spi_dev.begin()) {
+    Serial.println("Could not initialize SPI device");
+    while (1);
+  }
+
+  // Set up for automode 50Hz. We don't care about selfheating. We want the highest possible sampling rate.
+  auto_bit.write(0);   // Don't switch filtermode while auto_mode is on.
+  fi50hz_bit.write(1); // Set filter to 50Hz mode.
+  faultR_bit.write(1); // Clear faults.
+  bias_bit.write(1);   // In automode we want to have the bias current always on.
+  delay(5);            // Wait until bias current settles down.
+                       // 10.5 time constants of the input RC network is required.
+                       // 10ms worst case for 10kω reference resistor and a 0.1µF capacitor across the RTD inputs.
+                       // Adafruit Module has 0.1µF and only 430/4300ω So here 0.43/4.3ms
+  auto_bit.write(1);   // Now we can set automode. Automatically starting first conversion.
+
+  // Test the READY_PIN
+  #if (defined( MAX31865_READY_PIN ) && (MAX31865_READY_PIN != -1))
+    int i = 0;
+    while (digitalRead(MAX31865_READY_PIN) && i++ <= 100) { delay(1); }
+    if (i >= 100) {
+      Serial.print("ERROR: Max31865 Pin detection does not work. PIN:");
+      Serial.println(MAX31865_READY_PIN);
+    }
+  #else
+    delay(100);
+  #endif
+
+  // Set ratio range.
+  // Setting the temperatures would need some more calculation - not related to Adafruit_BusIO_RegisterBits.
+  uint16_t ratio = rRatio_bits.read();
+  maxRratio_bits.write( (ratio < 0x8fffu-1000u) ? ratio + 1000u : 0x8fffu ); 
+  minRratio_bits.write( (ratio >         1000u) ? ratio - 1000u : 0u      );
+
+  printConfig();
+  checkFaults();
+}
+
+void loop() {
+  #if (defined( MAX31865_READY_PIN ) && (MAX31865_1_READY_PIN != -1))
+    // Is conversion ready?
+    if (!digitalRead(MAX31865_READY_PIN))
+  #else
+    // Warant conversion is ready.
+    delay(21); // 21ms for 50Hz-mode. 19ms in 60Hz-mode.
+  #endif
+    {
+      // Read ratio, calculate temperature, scale, filter and print.
+      Serial.println( rRatio2C( rRatio_bits.read() ) * 100.0f, 0); // Temperature scaled by 100
+      // Check, print, clear faults.
+      checkFaults();
+    }
+
+  // Do something else.
+  //delay(15000);
+}
+
+
+// Module/Sensor related. Here Adafruit PT100 module with a 2_Wire PT100 Class C *****************************
+float rRatio2C(uint16_t ratio) {
+  // A simple linear conversion.
+  const float R0 = 100.0f;
+  const float Rref = 430.0f;
+  const float alphaPT = 0.003850f;
+  const float ADCmax = (1u << 15) - 1.0f;
+  const float rscale = Rref / ADCmax;
+  // Measured temperature in boiling water 101.08°C with factor a = 1 and b = 0. Rref and MAX at about 22±2°C.
+  // Measured temperature in ice/water bath 0.76°C with factor a = 1 and b = 0. Rref and MAX at about 22±2°C.
+  //const float a = 1.0f / (alphaPT * R0);
+  const float a = (100.0f/101.08f) / (alphaPT * R0);
+  //const float b = 0.0f;  // 101.08
+  const float b = -0.76f;  // 100.32 > 101.08
+
+  return filterRing( ((ratio * rscale) - R0) * a + b );
+}
+
+// General purpose *********************************************************************************************
+#define RINGLENGTH 250
+float filterRing( float newVal ) {
+  static float ring[RINGLENGTH] = { 0.0 };
+  static uint8_t ringIndex = 0;
+  static bool ringFull = false;
+
+  if ( ringIndex == RINGLENGTH ) { ringFull = true; ringIndex = 0; }
+  ring[ringIndex] = newVal;
+  uint8_t loopEnd = (ringFull) ? RINGLENGTH : ringIndex + 1;
+  float ringSum = 0.0f;
+  for (uint8_t i = 0;  i < loopEnd; i++) ringSum += ring[i];
+  ringIndex++;
+  return ringSum / loopEnd;
+}
diff --git a/lib/Adafruit_BusIO/examples/spi_registers/spi_registers.ino b/lib/Adafruit_BusIO/examples/spi_registers/spi_registers.ino
new file mode 100644
index 00000000..091a3531
--- /dev/null
+++ b/lib/Adafruit_BusIO/examples/spi_registers/spi_registers.ino
@@ -0,0 +1,34 @@
+#include <Adafruit_BusIO_Register.h>
+#include <Adafruit_SPIDevice.h>
+
+#define SPIDEVICE_CS 10
+Adafruit_SPIDevice spi_dev = Adafruit_SPIDevice(SPIDEVICE_CS);
+
+void setup() {
+  while (!Serial) { delay(10); }
+  Serial.begin(115200);
+  Serial.println("SPI device register test");
+
+  if (!spi_dev.begin()) {
+    Serial.println("Could not initialize SPI device");
+    while (1);
+  }
+
+  Adafruit_BusIO_Register id_reg = Adafruit_BusIO_Register(&spi_dev, 0x0F, ADDRBIT8_HIGH_TOREAD);
+  uint8_t id = 0;
+  id_reg.read(&id);
+  Serial.print("ID register = 0x"); Serial.println(id, HEX);
+
+  Adafruit_BusIO_Register thresh_reg = Adafruit_BusIO_Register(&spi_dev, 0x0C, ADDRBIT8_HIGH_TOREAD, 2, LSBFIRST);
+  uint16_t thresh = 0;
+  thresh_reg.read(&thresh);
+  Serial.print("Initial threshold register = 0x"); Serial.println(thresh, HEX);
+
+  thresh_reg.write(~thresh);
+
+  Serial.print("Post threshold register = 0x"); Serial.println(thresh_reg.read(), HEX);
+}
+
+void loop() {
+  
+}
diff --git a/lib/Adafruit_BusIO/library.properties b/lib/Adafruit_BusIO/library.properties
new file mode 100644
index 00000000..f0ef63f0
--- /dev/null
+++ b/lib/Adafruit_BusIO/library.properties
@@ -0,0 +1,9 @@
+name=Adafruit BusIO
+version=1.14.1
+author=Adafruit
+maintainer=Adafruit <info@adafruit.com>
+sentence=This is a library for abstracting away UART, I2C and SPI interfacing
+paragraph=This is a library for abstracting away UART, I2C and SPI interfacing
+category=Signal Input/Output
+url=https://github.com/adafruit/Adafruit_BusIO
+architectures=*
diff --git a/main/src/.DS_Store b/main/src/.DS_Store
index d956d623..9b0da662 100644
Binary files a/main/src/.DS_Store and b/main/src/.DS_Store differ
diff --git a/platformio.ini b/platformio.ini
index 039967dc..61f57c56 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -15,7 +15,6 @@ platform = espressif32
 board = esp32dev
 framework = arduino
 lib_deps = 
-	adafruit/Adafruit GFX Library@^1.11.3
 	links2004/WebSockets@^2.3.7
 board_build.partitions = huge_app.csv
 build_flags = -DCORE_DEBUG_LEVEL=5