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WIP: Raspberry Pi Pico 2 RP2350 #13305
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17204a3
rp23xx: add pico-sdk files
casaroli 111b1d3
doc(rp23xx): add arch and board documentation
casaroli edf7d81
board(rp23xx): add Raspberry Pi Pico 2
casaroli a7acaaf
arch(rp23xx): add files
casaroli 0c86b28
fixup! board(rp23xx): add Raspberry Pi Pico 2
casaroli 713ea77
board(rp23xx): add Pimoroni Pico 2 Plus
casaroli 7fe88fa
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63
Documentation/platforms/arm/rp23xx/boards/raspberrypi-pico-2/README.txt
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README | ||||||
====== | ||||||
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This directory contains the port of NuttX to the Raspberry Pi Pico. | ||||||
See https://www.raspberrypi.org/products/raspberry-pi-pico-2/ for information | ||||||
about Raspberry Pi Pico 2. | ||||||
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NuttX supports the following RP2530 capabilities: | ||||||
- UART (console port) | ||||||
- GPIO 0 (UART0 TX) and GPIO 1 (UART0 RX) are used for the console. | ||||||
- ADC | ||||||
- USB device | ||||||
- CDC/ACM serial device can be used for the console. | ||||||
- Flash ROM Boot | ||||||
- SRAM Boot | ||||||
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Installation | ||||||
============ | ||||||
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1. Configure and build NuttX | ||||||
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$ git clone https://github.com/apache/nuttx.git nuttx | ||||||
$ git clone https://github.com/apache/nuttx-apps.git apps | ||||||
$ cd nuttx | ||||||
$ make distclean | ||||||
$ ./tools/configure.sh raspberrypi-pico-2:nsh | ||||||
$ make V=1 | ||||||
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4. Connect Raspberry Pi Pico 2 board to USB port while pressing BOOTSEL. | ||||||
The board will be detected as USB Mass Storage Device. | ||||||
Then copy "nuttx.uf2" into the device. | ||||||
(Same manner as the standard Pico SDK applications installation.) | ||||||
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5. To access the console, GPIO 0 and 1 pins must be connected to the | ||||||
device such as USB-serial converter. | ||||||
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`usbnsh` configuration provides the console access by USB CDC/ACM serial | ||||||
devcice. The console is available by using a terminal software on the USB | ||||||
host. | ||||||
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Defconfigs | ||||||
========== | ||||||
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- nsh | ||||||
Minimum configuration with NuttShell | ||||||
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- usbnsh | ||||||
USB CDC/ACM serial console with NuttShell | ||||||
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License exceptions | ||||||
================== | ||||||
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The following files are originated from the files in Pico SDK. | ||||||
So, the files are licensed under 3-Clause BSD same as Pico SDK. | ||||||
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- arch/arm/src/rp23xx/rp23xx_clock.c | ||||||
- arch/arm/src/rp23xx/rp23xx_pll.c | ||||||
- arch/arm/src/rp23xx/rp23xx_xosc.c | ||||||
- These are created by referring the Pico SDK clock initialization. | ||||||
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- arch/arm/src/rp23xx/hardware/*.h | ||||||
- arch/arm/src/rp23xx/pico/*.h | ||||||
- These are originally provided in Pico SDK. |
137 changes: 137 additions & 0 deletions
137
Documentation/platforms/arm/rp23xx/boards/raspberrypi-pico-2/index.rst
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=============================== | ||||||
Raspberry Pi Pico | ||||||
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=============================== | ||||||
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The `Raspberry Pi Pico 2 <https://www.raspberrypi.com/products/raspberry-pi-pico-2/>`_ is a general purpose board supplied by | ||||||
the Raspberry Pi Foundation. | ||||||
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.. figure:: pico-2.png | ||||||
:align: center | ||||||
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Features | ||||||
======== | ||||||
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* RP2350 microcontroller chip | ||||||
* Dual-core ARM Cortex M33 processor, flexible clock running up to 150 MHz | ||||||
* 520kB of SRAM, and 4MB of on-board Flash memory | ||||||
* Castellated module allows soldering direct to carrier boards | ||||||
* USB 1.1 Host and Device support | ||||||
* Low-power sleep and dormant modes | ||||||
* Drag & drop programming using mass storage over USB | ||||||
* 26 multi-function GPIO pins | ||||||
* 2× SPI, 2× I2C, 2× UART, 3× 12-bit ADC, 16× controllable PWM channels | ||||||
* Accurate clock and timer on-chip | ||||||
* Temperature sensor | ||||||
* Accelerated floating point libraries on-chip | ||||||
* 8 × Programmable IO (PIO) state machines for custom peripheral support | ||||||
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Serial Console | ||||||
============== | ||||||
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By default a serial console appears on pins 1 (TX GPIO0) and pin 2 | ||||||
(RX GPIO1). This console runs a 115200-8N1. | ||||||
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The board can be configured to use the USB connection as the serial console. | ||||||
See the `usbnsh` configuration. | ||||||
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Buttons and LEDs | ||||||
================ | ||||||
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User LED controlled by GPIO25 and is configured as autoled by default. | ||||||
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A BOOTSEL button, which if held down when power is first | ||||||
applied to the board, will cause the RP2350 to boot into programming | ||||||
mode and appear as a storage device to a computer connected via USB . | ||||||
Saving a .UF2 file to this device will replace the Flash ROM contents | ||||||
on the RP2040. | ||||||
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Pin Mapping | ||||||
=========== | ||||||
Pads numbered anticlockwise from USB connector. | ||||||
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===== ========== ========== | ||||||
Pad Signal Notes | ||||||
===== ========== ========== | ||||||
1 GPIO0 Default TX for UART0 serial console | ||||||
2 GPIO1 Default RX for UART1 serial console | ||||||
3 Ground | ||||||
4 GPIO2 | ||||||
5 GPIO3 | ||||||
6 GPIO4 | ||||||
7 GPIO5 | ||||||
8 Ground | ||||||
9 GPIO6 | ||||||
10 GPIO7 | ||||||
11 GPIO8 | ||||||
12 GPIO9 | ||||||
13 Ground | ||||||
14 GPIO10 | ||||||
15 GPIO11 | ||||||
16 GPIO12 | ||||||
17 GPIO13 | ||||||
18 Ground | ||||||
19 GPIO14 | ||||||
20 GPIO15 | ||||||
21 GPIO16 | ||||||
22 GPIO17 | ||||||
23 Ground | ||||||
24 GPIO18 | ||||||
25 GPIO19 | ||||||
26 GPIO20 | ||||||
27 GPIO21 | ||||||
28 Ground | ||||||
29 GPIO22 | ||||||
30 Run | ||||||
31 GPIO26 ADC0 | ||||||
32 GPIO27 ADC1 | ||||||
33 AGND Analog Ground | ||||||
34 GPIO28 ADC2 | ||||||
35 ADC_VREF | ||||||
36 3V3 Power output to peripherals | ||||||
37 3V3_EN Pull to ground to turn off. | ||||||
38 Ground | ||||||
39 VSYS +5V Supply to board | ||||||
40 VBUS Connected to USB +5V | ||||||
===== ========== ========== | ||||||
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Other RP2350 Pins | ||||||
================= | ||||||
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GPIO23 Output - Power supply control. | ||||||
GPIO24 Input - High if USB port or Pad 40 supplying power. | ||||||
GPIO25 Output - On board LED. | ||||||
ADC3 Input - Analog voltage equal to one third of VSys voltage. | ||||||
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Separate pins for the Serial Debug Port (SDB) are available | ||||||
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Power Supply | ||||||
============ | ||||||
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The Raspberry Pi Pico 2 can be powered via the USB connector, | ||||||
or by supplying +5V to pin 39. The board had a diode that prevents | ||||||
power from pin 39 from flowing back to the USB socket, although | ||||||
the socket can be power via pin 30. | ||||||
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The Raspberry Pi Pico chip run on 3.3 volts. This is supplied | ||||||
by an onboard voltage regulator. This regulator can be disabled | ||||||
by pulling pin 37 to ground. | ||||||
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The regulator can run in two modes. By default the regulator runs | ||||||
in PFM mode which provides the best efficiency, but may be | ||||||
switched to PWM mode for improved ripple by outputting a one | ||||||
on GPIO23. | ||||||
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Configurations | ||||||
============== | ||||||
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nsh | ||||||
--- | ||||||
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Basic NuttShell configuration (console enabled in UART0, at 115200 bps). | ||||||
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README.txt | ||||||
========== | ||||||
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.. include:: README.txt | ||||||
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Documentation/platforms/arm/rp23xx/boards/raspberrypi-pico-2/pico-2.png
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