# uartdemo.py
from serial import Serial

try:
	uartport = "/dev/ttyPS1"
	bps = 9600
	timeout = 5
    # 打开串口，设置串口的端口、波特率、超时时间
	serial = Serial(uartport,bps,timeout=timeout)
    # 发送字符串到另一个设备
	result = serial.write("HelloWorld")
	print(result)
    # 关闭串口
	serial.close()

except Exception as e:
	print("----error-----",e)