如何获得Raspberry Pi Pico与PC /外部设备进行通信？

发布于 2025-01-27 09:46:14 字数 488 浏览 5 评论 0原文

例如，当我给代码5时，我想打开RPI PICO中的LED（通过电缆连接到PC）。

#This code will run in my computer (test.py)

x=int(input("Number?"))
if (x==5):
    #turn on raspberry pi pico led

RPI PICO的代码：

#This code will run in my rpi pico (pico.py)

from machine import Pin
led = Pin(25, Pin.OUT)

led.value(1)

反之亦然（在计算机上使用RPI PICO中的代码执行某些操作）。

如何在RPI PICO中调用/获取PC中的变量？

注意：我正在用OpenCV Python编写代码，我想从计算机上的计算机相机处理数据。我希望RPI PICO根据处理后的数据做出反应。

原文

For example when I give 5 to the code, I want to turn on the LED in our RPi pico (connected to a PC via a cable).

#This code will run in my computer (test.py)

x=int(input("Number?"))
if (x==5):
    #turn on raspberry pi pico led

The code of the RPi pico:

#This code will run in my rpi pico (pico.py)

from machine import Pin
led = Pin(25, Pin.OUT)

led.value(1)

Or vice versa (doing something in the code on the computer with the code in the RPi pico).

How can I call/get a variable in the PC to the RPi pico?

Note: I am writing code with OpenCV Python and I want to process the data from my computer's camera on my computer. I want the RPi pico to react according to the processed data.

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神爱温柔 2025-02-03 09:46:14

主机和PICO之间通信的一种简单方法是使用串行端口。我有一个 rp2040-Zero ，它以/dev/dev/dev呈现给主机/ttyacm0。如果我在RP2040上使用类似的代码：

import sys
import machine

led = machine.Pin(24, machine.Pin.OUT)

def led_on():
    led(1)

def led_off():
    led(0)


while True:
    # read a command from the host
    v = sys.stdin.readline().strip()

    # perform the requested action
    if v.lower() == "on":
        led_on()
    elif v.lower() == "off":
        led_off()

那么我可以在主机上运行此操作以闪烁LED：

import serial
import time

# open a serial connection
s = serial.Serial("/dev/ttyACM0", 115200)

# blink the led
while True:
    s.write(b"on\n")
    time.sleep(1)
    s.write(b"off\n")
    time.sleep(1)

这显然只是单向通信，但是您当然可以实现一种机制来将信息传递回主机。

A simple method of communicating between the host and the Pico is to use the serial port. I have a rp2040-zero, which presents itself to the host as /dev/ttyACM0. If I use code like this on the rp2040:

import sys
import machine

led = machine.Pin(24, machine.Pin.OUT)

def led_on():
    led(1)

def led_off():
    led(0)


while True:
    # read a command from the host
    v = sys.stdin.readline().strip()

    # perform the requested action
    if v.lower() == "on":
        led_on()
    elif v.lower() == "off":
        led_off()

Then I can run this on the host to blink the LED:

import serial
import time

# open a serial connection
s = serial.Serial("/dev/ttyACM0", 115200)

# blink the led
while True:
    s.write(b"on\n")
    time.sleep(1)
    s.write(b"off\n")
    time.sleep(1)

This is obviously just one-way communication, but you could of course implement a mechanism for passing information back to the host.

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