我正在尝试通过uart与我的raspberry pi 4与raspberry pi pico通信。下面的代码确实传输数据,但我只从print语句接收数据
import os
import utime
from machine import ADC
temp_sensor = ADC(4) # Default connection of temperature sensor
def temperature():
# get raw sensor data
raw_sensor_data = temp_sensor.read_u16()
# convert raw value to equivalent voltage
sensor_voltage = (raw_sensor_data / 65535)*3.3
# convert voltage to temperature (celcius)
temperature = 27. - (sensor_voltage - 0.706)/0.001721
return temperature
#print setup information :
print("OS Name : ",os.uname())
uart = machine.UART(0, baudrate = 9600)
print("UART Info : ", uart)
utime.sleep(3)
while True:
temp = temperature()
print(str(temp))
uart.write(str(temp))
utime.sleep(1)
我的raspberry pi 4上的代码是:
import serial
import time
import numpy as np
import matplotlib.pyplot as plt
#ser = serial.Serial('COM14',9600)
ser = serial.Serial('/dev/ttyACM0', 9600)
time.sleep(1)
while True:
# read two bytes of data
#data = (ser.read(8))
data = (ser.readline())
# convert bytestring to unicode transformation format -8 bit
temperature = str(data).encode("utf-8")
#print("Pico's Core Temperature : " + temperature + " Degree Celcius")
print(temperature)
我的RPI 4上的终端输出为:
27.2332
26.443
26.443
26.564
两者之间有一条额外的新界线。如果我从pico代码中删除print(str(temp)),我将一无所获。我可以在uart.write(str(temp))中放入任何内容,但仍然可以接收print语句,但是如果没有uart.write(),我将什么也不会收到
目前没有回答
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