Beaglebone Black Wireless：UART未读取

Question

I'm trying to have a Beaglebone Black Wireless(debian image 2017-07-01) communicate to another device using UART serial communication. In an example program, the bone waits for the device to send the letter "A", then, upon receiving the right letter, outputs a message and transmits the letter "B". Here is the following program:

import Adafruit_BBIO.UART as UART
import serial

#Enabling the serial ports
UART.setup("UART1")

#Serial setup values
ser = serial.Serial()
ser.port = "/dev/ttyO1"
ser.baudrate = 9600  
READ_LEN = 1
ser.close()

rx = ""

while True:
    print "Waiting for A... "
    ser.open()
    rx = ser.read()
    ser.close()

    if (rx == 'A'):
        print "Got it!"
        ser.open()
        ser.write("B")
        ser.close()
        break

The program doesn't throw any errors, however, when testing it out with the device, the program gets stuck on the "Waiting for A" line. I have thoroughly checked that all connections are correct and that the other device is sending data. Additionally, the program runs perfectly on an older Beaglebone (debian image 2015-11-12).

Any help into this matter would be greatly appreciated.

Answer 1

config-pin "Whatever Pin You Are Using" uart

example:

config-pin P9.14 uart

Seth