You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
93 lines
2.0 KiB
93 lines
2.0 KiB
5 months ago
|
# 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: download pico sdk
|
||
|
|
|
||
|
|
```bash
|
||
|
|
pkgs --update
|
||
|
|
```
|
||
|
|
|
||
|
|
### Step 2: build
|
||
|
|
|
||
|
|
```bash
|
||
|
|
scons -c
|
||
|
|
scons
|
||
|
|
```
|
||
|
|
|
||
|
|
**gcc version >= 6.x.x**
|
||
|
|
|
||
|
|
### Step 3: flash
|
||
|
|
|
||
|
|
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:
|
||
|
|
|
||
|
|
```bash
|
||
|
|
picotool load rtthread-pico.uf2
|
||
|
|
picotool reboot
|
||
|
|
```
|
||
|
|
|
||
|
|
## Running Result
|
||
|
|
|
||
|
|
The output information on serial port should be like this:
|
||
|
|
|
||
|
|
```bash
|
||
|
|
\ | /
|
||
|
|
- 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 | Support | - |
|
||
|
|
| RTC | Support | - |
|
||
|
|
| SDIO | - | - |
|
||
|
|
| SPI | Support | - |
|
||
|
|
| TIMER | Support | - |
|
||
|
|
| WDT | Support | - |
|
||
|
|
| ADC | Support | - |
|
||
|
|
| FLASH | Support | - |
|
||
|
|
| PWM | Support | - |
|