Raspberry Pi Pico is a low-cost, high-performance microcontroller board with flexible digital interfaces.

Key features include:

• RP2040 microcontroller chip designed by Raspberry Pi in the United Kingdom

• Dual-core Arm Cortex M0+ processor, flexible clock running up to 133 MHz

• 264KB of SRAM, and 2MB of on-board Flash memory

• Castellated module allows soldering direct to carrier boards

• USB 1.1 with device and host support

• Low-power sleep and dormant modes

• Drag-and-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 I/O (PIO) state machines for custom peripheral support

Support GCC 6 and above compilers.

pkgs --update

scons -c
scons

gcc version >= 6.x.x

scons generates a UF2 file:

• Copy the rtthread-pico.uf2 file to the "RPI-RP2" disk
• Then led blink.

Or you can use the picotool by:

picotool load rtthread-pico.uf2
picotool reboot

The output information on serial port should be like this:

 \ | /
- RT -     Thread Operating System
 / | \     4.0.3 build Jan 28 2021
 2006 - 2021 Copyright by rt-thread team
Hello, RT-Thread!
msh >