Building

The examples build as regular Raspberry Pi Pico SDK applications. You can build either from this root directory, or build from within the individual examples' directories.

See Getting Started With Pico in the SDK documentation for setting up a Raspberry Pi Pico SDK build environment. If you are already set up, then just make sure PICO_SDK_PATH is set in your environment or pass it via -DPICO_SDK_PATH=xxx on the Cmake command line.

Set FREERTOS_KERNEL_PATH in your environment or on the CMake command line to point at a specific instance of the FreeRTOS Kernel.

To build from the command line on unix, from this directory (or from the individual examples' directories), type:

mkdir build
cd build
cmake ..
make

This will generate .uf2 files for each example under the relevant build directories.

Flashing

1. Connect USB while BOOTSEL button is pressed on Pico. RPI-RP2 should show up as USB Mass Storage device.
2. Copy the generated .uf2 file to RPI-RP2. Once the file transfer is complete Pico would restart automatically and start running the program.
3. Additionally, use screen (or any other terminal) to monitor serial output over USB. dmesg | grep tty to find TTY device.

Serial Monitor example

$ dmesg | grep tty
[    0.108413] printk: console [tty0] enabled
[    0.653298] 00:06: ttyS0 at I/O 0x3f8 (irq = 4, base_baud = 115200) is a 16550A
[    0.655126] 0000:00:16.3: ttyS4 at I/O 0xf0e0 (irq = 19, base_baud = 115200) is a 16550A
[ 5718.448836] cdc_acm 1-11:1.0: ttyACM0: USB ACM device

$ screen /dev/ttyACM0