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UART.py

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from machine import UART,Pin

import utime

uart = UART(0,baudrate=115200,tx=Pin(0),rx=Pin(1))

led = Pin(25,Pin.OUT)

uart.write("Waveshare Uart Test\r\n")

uart.write("Please enter character 0 or 1 to switch the LED on and off\r\n")

while True:

if uart.any() != False:

print(uart.any())

buf=uart.read(1)

if buf == b'1':

led.on()

print("LED ON")

uart.write("LED ON\r\n")

elif buf == b'0':

led.off()

print("LED OFF")

uart.write("LED OFF\r\n")

else :

print("Please enter character 0 or 1 to switch the LED on and off")

uart.write("Please enter character 0 or 1 to switch the LED on and off\r\n")