Python &引用;AT+;CGPSINFO“;命令可用于Socat,但不能用于PySerial
以下Socat命令根据需要返回GPS数据:Python &引用;AT+;CGPSINFO“;命令可用于Socat,但不能用于PySerial,python,serial-port,pyserial,socat,Python,Serial Port,Pyserial,Socat,以下Socat命令根据需要返回GPS数据: echo 'AT+CGPSINFO' | socat - /dev/ttyUSB3,crnl +CGPSINFO: 5100.505778,N,11404.437214,W,031120,175538.0,1076.7,0.0,348.0 OK 现在我想用PySerial在Python中做同样的事情,但是我得到了一个错误 from serial import Serial import time def sleep_for_x_seconds(
echo 'AT+CGPSINFO' | socat - /dev/ttyUSB3,crnl
+CGPSINFO: 5100.505778,N,11404.437214,W,031120,175538.0,1076.7,0.0,348.0
OK
现在我想用PySerial在Python中做同样的事情,但是我得到了一个错误
from serial import Serial
import time
def sleep_for_x_seconds(sleep_secs=0.25):
print(f"Sleeping for {sleep_secs} seconds...")
time.sleep(sleep_secs)
def write_to_modem(modem, to_write, sleep=True, sleep_secs=0.25, readlines=True):
print(f"Writing {to_write}...")
modem.write(to_write)
if sleep:
sleep_for_x_seconds(sleep_secs)
if readlines:
print(modem.readlines())
sleep_secs = 0.25
port = "/dev/ttyUSB3"
print(f"Initializing modem on port '{port}'...")
modem = Serial()
modem.port = port
modem.timeout = 1 # How long to wait when reading lines
modem.writeTimeout = 1
sleep_for_x_seconds(sleep_secs)
print("Opening modem and flushing input and output...")
modem.open()
modem.flushInput()
modem.flushOutput()
sleep_for_x_seconds(sleep_secs)
# This first command returns [b'\r\n', b'OK\r\n']
write_to_modem(modem, b"AT\r\n", sleep=True, sleep_secs=sleep_secs, readlines=True)
# This second command returns [b'\r\n', b'ERROR\r\n'] for some reason... why?
write_to_modem(modem, b"AT^CGPSINFO=1\r\n", sleep=True, sleep_secs=sleep_secs, readlines=True)
modem.flushInput()
modem.close()
以下是运行上述程序的完整输出日志(为了可读性增加了换行符):
为什么在运行PySerial时,在Socat中运行以下命令时会出现错误“[b'\r\n',b'error\r\n']”
echo 'AT+CGPSINFO' | socat - /dev/ttyUSB3,crnl
+CGPSINFO: 5100.505778,N,11404.437214,W,031120,175538.0,1076.7,0.0,348.0
OK
正如@meuh在评论中所显示的,我使用的是
^
而不是+
,因此将其更改为b“AT+CGPSINFO=1\r\n”
解决了问题…程序正在发送AT^CGPSINFO=1
,这与echo AT+CGPSINFO
不同?@meuh是的,这绝对是个问题。我一定是从某处复制并粘贴了^。。。多么简单的解决方案——谢谢!
echo 'AT+CGPSINFO' | socat - /dev/ttyUSB3,crnl
+CGPSINFO: 5100.505778,N,11404.437214,W,031120,175538.0,1076.7,0.0,348.0
OK