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Raspberry PICO

Introduction

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

Supported compiler

Support GCC 6 and above compilers.

Program firmware

Step 1: build

scons -c
scons

gcc version >= 6.x.x

Step 2: flash

scons generates a UF2 file:

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

Running Result

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 >

Peripheral Condition

Drive	Support	Remark
UART	Support	UART0/1
GPIO	Support	0-29
I2C	-	-
RTC	-	-
SDIO	-	-
SPI	-	-
TIMER	-	-
WDT	-	-