【发布时间】:2018-08-23 19:57:51
【问题描述】:
- 树莓派 3
- Python 2.7
- Sim800L
嗨! 我在连接到 gsm 模块时遇到错误
这是我从rhydolabz得到的代码
import serial
import RPi.GPIO as GPIO
import os, time
GPIO.setmode(GPIO.BOARD)
# Enable Serial Communication
port = serial.Serial("/dev/ttyS0", baudrate=9600, timeout=1)
# Transmitting AT Commands to the Modem
# '\r\n' indicates the Enter key
port.write('AT'+'\r\n')
rcv = port.read(10)
print rcv
time.sleep(1)
port.write('ATE0'+'\r\n') # Disable the Echo
rcv = port.read(10)
print rcv
time.sleep(1)
port.write('AT+CMGF=1'+'\r\n') # Select Message format as Text mode
rcv = port.read(10)
print rcv
time.sleep(1)
port.write('AT+CNMI=2,1,0,0,0'+'\r\n') # New SMS Message Indications
rcv = port.read(10)
print rcv
time.sleep(1)
# Sending a message to a particular Number
port.write('AT+CMGS="+6xxxxxxxxx68"'+'\r\n')
rcv = port.read(10)
print rcv
time.sleep(1)
port.write('Hello User'+'\r\n') # Message
rcv = port.read(10)
print rcv
port.write("\x1A") # Enable to send SMS
for i in range(10):
rcv = port.read(10)
print rcv
以下是错误:
OSError: [Errno 11] Resource temporarily unavailable
raise SerialException('device reports readiness to read but returned no data (device disconnected?)')
serial.serialutil.SerialException: device reports readiness to read but returned no data (device disconnected?)
raise SerialException('write failed: %s' % (v,))
serial.serialutil.SerialException: write failed: [Errno 5] Input/output error
有时它会发送
Hello User
Login incorrect
raspberrypi login:
有时
>
>
>
(100+ more '>')
Hello User
但几乎总是无法连接并给出错误 11
你也经历过吗? 有什么方法可以等待 gsm 连接,然后再继续发送消息?
【问题讨论】:
-
您是否断开了 uart 与内部蓝牙和内核控制台的连接?也许这可以帮助你:raspberrypi.org/documentation/configuration/uart.md
标签: python-2.7 raspberry-pi3 gsm sim800