To build - include the ARM GCC cross-compiler in your path, and either a path to the PICO SDK checked out on your local machine or set PICO_SDK_FETCH_FROM_GIT=true in the environment:
export PATH=${PATH}:/path/to/arm-none-eabi-gcc/bin/
# And:
export PICO_SDK_PATH=/path/to/pico-sdk/
# or:
export PICO_SDK_FETCH_FROM_GIT=true
# Configure the project and native build system:
cmake -B build
# Perform a build:
cmake --build build -j4
To install:
- Place the QT Py RP2040 into bootloader mode by holding the BOOT button while plugging the USB cable in or tapping the RESET button. You will see the
RPI-RP2volume mount - Copy the
build/blink.uf2file to theRPI-RP2mount
The QT Py RP2040 will reboot and start toggling the D0/A0 pin.
This information is from the Circuit Python port for the QT Py RP2040:
| QT Py Pin | RP2040 GPIO |
|---|---|
| A0 / D0 | GPIO 29 |
| A1 / D1 | GPIO 28 |
| A2 / D2 | GPIO 27 |
| A3 / D3 | GPIO 26 |
| I2C0 SDA / D4 | GPIO 24 |
| I2C0 SCL / D5 | GPIO 25 |
| TX / D6 | GPIO 20 |
| RX / D7 | GPIO 5 |
| SPI0 SCK / D8 | GPIO 6 |
| SPI0 DI / D9 | GPIO 4 |
| SPI0 DO / D10 | GPIO 3 |
| QT Py Peripheral | RP2040 GPIO |
|---|---|
| NeoPixel Data | GPIO 12 |
| NeoPixel Power | GPIO 11 |
| Button | GPIO 21 |
| QWIIC/QT I2C1 SDA | GPIO 22 |
| QWIIC/QT I2C1 SCL | GPIO 23 |
When the QT Py RP2040 is placed into bootloader mode and the uf2 package build above is copied over, the program runs as expected. Upon RESETing the board or removing and plugging back in USB, the program does not run. Working to determine why.