raspberry pi pico 官方提供 2 种开发方式,其中一种是使用 python3 开发,树莓派提供了 MicroPython 固件,把这个固件烧录进去,就可以 在 pico 上跑 python3 脚本。
已经编译好的固件:getting-started这里可以下载到
源码:micropython‘s github,micropython已经对 RP2040 进行支持
raspberrypi 官方 github 上有相关例程:pico-micropython-examples
树莓派官网提供了编译好的 MicroPython 固件,也可以自己编译, Raspberry Pi Pico Python SDK 给出了编译教程。
这里直接使用官方编译好的固件,下载下来是这样的:
先按住板子上的按键,然后连上电脑,等电脑出现名字为 RPI-RP2的磁盘时,把下载到的固件拷贝到该磁盘,等拷贝完成就烧录好了,烧录完,设备会自动重新启动,然后我的电脑上出现了这个:
设备管理器中多了个 COM 口:
PC上可以使用串口终端通过该 COM 口操作 pico。
我是用的串口终端是 MobaXterm,MobaXterm 什么?MobaXterm 官网的描述是:
Enhanced terminal for Windows with X11 server, tabbed SSH client, network tools and much more
可以创建SSH、Telnet 、串口终端等等,功能释放强大,有免费版、也有收费的,免费的够用了。
创建一个串口终端连接跑 MicroPython 的 pico,选择对应的 COM 口,波特率115200,如下:
点击 OK 后,界面乌漆嘛黑,什么都没有,需要按下回车,然后就可以进行操作了,如下:
在MobaXterm 执行一下 python 代码,就可以点亮板子上的 LED 了:
from machine import Pin led = Pin(25, Pin.OUT) led.value(1)
[Port2] : USB Composite Device ---===>Device Information<===--- English product name: "Board in FS mode" ConnectionStatus: Current Config Value: 0x01 -> Device Bus Speed: Full Device Address: 0x15 Open Pipes: 3 ===>Endpoint Descriptor<=== bLength: 0x07 bDescriptorType: 0x05 bEndpointAddress: 0x81 -> Direction: IN - EndpointID: 1 bmAttributes: 0x03 -> Interrupt Transfer Type wMaxPacketSize: 0x0008 = 0x08 bytes bInterval: 0x10 ===>Endpoint Descriptor<=== bLength: 0x07 bDescriptorType: 0x05 bEndpointAddress: 0x02 -> Direction: OUT - EndpointID: 2 bmAttributes: 0x02 -> Bulk Transfer Type wMaxPacketSize: 0x0040 = 0x40 bytes bInterval: 0x00 ===>Endpoint Descriptor<=== bLength: 0x07 bDescriptorType: 0x05 bEndpointAddress: 0x82 -> Direction: IN - EndpointID: 2 bmAttributes: 0x02 -> Bulk Transfer Type wMaxPacketSize: 0x0040 = 0x40 bytes bInterval: 0x00 ===>Device Descriptor<=== bLength: 0x12 bDescriptorType: 0x01 bcdUSB: 0x0200 bDeviceClass: 0xEF -> This is a Multi-interface Function Code Device bDeviceSubClass: 0x02 -> This is the Common Class Sub Class bDeviceProtocol: 0x01 -> This is the Interface Association Descriptor protocol bMaxPacketSize0: 0x40 = (64) Bytes idVendor: 0x2E8A = Vendor ID not listed with USB.org as of 03-19-2008 idProduct: 0x0005 bcdDevice: 0x0100 iManufacturer: 0x01 English (United States) "MicroPython" iProduct: 0x02 English (United States) "Board in FS mode" iSerialNumber: 0x03 English (United States) "000000000000" bNumConfigurations: 0x01 ===>Configuration Descriptor<=== bLength: 0x09 bDescriptorType: 0x02 wTotalLength: 0x004B -> Validated bNumInterfaces: 0x02 bConfigurationValue: 0x01 iConfiguration: 0x00 bmAttributes: 0xA0 -> Bus Powered MaxPower: 0x7D = 250 mA ===>IAD Descriptor<=== bLength: 0x08 bDescriptorType: 0x0B bFirstInterface: 0x00 bInterfaceCount: 0x02 bFunctionClass: 0x02 -> This is Communications (CDC Control) USB Device Interface Class bFunctionSubClass: 0x02 bFunctionProtocol: 0x00 iFunction: 0x00 ===>Interface Descriptor<=== bLength: 0x09 bDescriptorType: 0x04 bInterfaceNumber: 0x00 bAlternateSetting: 0x00 bNumEndpoints: 0x01 bInterfaceClass: 0x02 -> This is Communications (CDC Control) USB Device Interface Class bInterfaceSubClass: 0x02 bInterfaceProtocol: 0x00 CAUTION: This may be an invalid bInterfaceProtocol iInterface: 0x04 English (United States) "Board CDC" -> This is a Communications (CDC Control) USB Device Interface Class ===>Descriptor Hex Dump<=== bLength: 0x05 bDescriptorType: 0x24 05 24 00 20 01 -> This is a Communications (CDC Control) USB Device Interface Class ===>Descriptor Hex Dump<=== bLength: 0x05 bDescriptorType: 0x24 05 24 01 00 01 -> This is a Communications (CDC Control) USB Device Interface Class ===>Descriptor Hex Dump<=== bLength: 0x04 bDescriptorType: 0x24 04 24 02 02 -> This is a Communications (CDC Control) USB Device Interface Class ===>Descriptor Hex Dump<=== bLength: 0x05 bDescriptorType: 0x24 05 24 06 00 01 ===>Endpoint Descriptor<=== bLength: 0x07 bDescriptorType: 0x05 bEndpointAddress: 0x81 -> Direction: IN - EndpointID: 1 bmAttributes: 0x03 -> Interrupt Transfer Type wMaxPacketSize: 0x0008 = 0x08 bytes bInterval: 0x10 ===>Interface Descriptor<=== bLength: 0x09 bDescriptorType: 0x04 bInterfaceNumber: 0x01 bAlternateSetting: 0x00 bNumEndpoints: 0x02 bInterfaceClass: 0x0A -> This is a CDC Data USB Device Interface Class bInterfaceSubClass: 0x00 bInterfaceProtocol: 0x00 CAUTION: This may be an invalid bInterfaceProtocol iInterface: 0x00 ===>Endpoint Descriptor<=== bLength: 0x07 bDescriptorType: 0x05 bEndpointAddress: 0x02 -> Direction: OUT - EndpointID: 2 bmAttributes: 0x02 -> Bulk Transfer Type wMaxPacketSize: 0x0040 = 0x40 bytes bInterval: 0x00 ===>Endpoint Descriptor<=== bLength: 0x07 bDescriptorType: 0x05 bEndpointAddress: 0x82 -> Direction: IN - EndpointID: 2 bmAttributes: 0x02 -> Bulk Transfer Type wMaxPacketSize: 0x0040 = 0x40 bytes bInterval: 0x00