A C library for using Texas Instrument ADS1115 analog-to-digital converter with the Raspberry Pi Pico.
The ADS1115 is a 16-bit, 4 channel delta-sigma ADC. It is interfaced with I2C. Adafruit make a convenient ADC board with this chip (Adafruit product ID 1085).
ADS1115 | Pico |
---|---|
SDA | SDA (e.g. pin 8) |
SCL | SCL (e.g. pin 9) |
VDD | 3V3(OUT) |
GND | GND |
(Note that I2C interfacing requires pull-up resistors, but Adafruit's board already includes these.)
- Configure
CMakeLists.txt
in your base project to include the path to the pico-mpr121 library. Add pico-ads1115 to the list of target libraries. E.g. if the pico-ads1115 library is located one directory above (../
) the current one yourCMakeLists.txt
file should include
.
.
.
include(pico_sdk_import.cmake)
add_subdirectory(../pico-ads1115/lib ads1115)
target_link_libraries(touch
pico_stdlib
hardware_i2c
pico-ads1115
)
.
.
.
- Use the library; see the examples directory.