Question

我在使用python代码时遇到了一些困难。我有Rpi2和SIM900模块连接。即使我可以收到短信，我也可以拨打电话，接听电话，发短信。但把所有这些放在一起让我很头疼。我已经滚动浏览谷歌，现在我发现即使结果也一直都是这样，所以我在0点进一步。

所以我的议程是我会发送短信给SimModule。如果短信将从批准的列表中的电话号码到达，Python会读取传入的短信，并且包含特定号码的特定代码：

短信的例子

RV -> make call to cell no: 49
RI -> make call to cell no: 48
MV -> make call to cell no: 47
MI -> make call to cell no: 46

到目前为止，我已经可以使用以下代码阅读短信

import serial
import time
import sys


class sim900(object):

    def __init__(self):
        self.open()

    def open(self):
        self.ser = serial.Serial('/dev/ttyAMA0', 115200, timeout=5)

    def SendCommand(self,command, getline=True):
        self.ser.write(command)
        data = ''
        if getline:
            data=self.ReadLine()
        return data

    def ReadLine(self):
        data = self.ser.readline()
#        print data
        return data

    def GetAllSMS(self):
        self.ser.flushInput()
        self.ser.flushOutput()

        command = 'AT+CMGL=\"ALL\"\r'#gets incoming sms that has not been read
        print self.SendCommand(command,getline=True)
        data = self.ser.readall()
        print data
        self.ser.close()

    def Call49(self):
        self.ser = serial.Serial('/dev/ttyAMA0', 115200, timeout=5)
        self.ser.write('ATD49;\r')
        time.sleep(1)
        time.sleep(1)
        self.ser.write(chr(26))
           # responce = ser.read(50)
        self.ser.close()
        print "calling"

    def Call48(self):
        self.ser = serial.Serial('/dev/ttyAMA0', 115200, timeout=5)
        self.ser.write('ATD48;\r')
        time.sleep(1)
        self.ser.write(chr(26))
           # responce = ser.read(50)
        self.ser.close()
        print "calling"

h = sim900()
h.GetAllSMS()

我可以阅读短信（见下文）

AT+CMGL="ALL"
AT+CMGL="ALL"
+CMGL: 1,"REC READ","+30000000000","","17/08/27,23:28:51+08"
RV
+CMGL: 2,"REC READ","+30000000000","","17/08/28,00:34:12+08"
RI
OK

现在如何在短信＆＃34; def GetAllSMS＆＃34;中添加功能？电话号码+30000000000将与文本RV一起存在，它将执行＆＃34; def Call48＆＃34;如果它是RI，它将执行＆＃34; def Call47＆＃34;

一些帮助将不胜感激。 Tnx提前。

Answer 1

正确解析调制解调器响应可能很棘手（例如，请参阅this answer）。如果您打算使用消息传递功能以及语音呼叫和USSD请求，您可能最终会重新创建python-gsmmodem library :)但是在您解析SMS响应的特殊情况下，您可以使用此代码（改编自提及蟒-GSMMODEM）。

import re

def GetAllSMS(self):

    self.ser.flushInput()
    self.ser.flushOutput()

    result = self.SendCommand('AT+CMGL="ALL"\r\n')
    msg_lines = []
    msg_index = msg_status = number = msg_time = None

    cmgl_re = re.compile('^\+CMGL: (\d+),"([^"]+)","([^"]+)",[^,]*,"([^"]+)"$')

    # list of (number, time, text)
    messages = []

    for line in result:
        cmgl_match = cmgl_re.match(line)
        if cmgl_match:
            # New message; save old one if applicable
            if msg_index != None and len(msg_lines) > 0:
                msg_text = '\n'.join(msg_lines)
                msg_lines = []
                messages.append((number, msg_time, msg_text))
            msg_index, msg_status, number, msg_time = cmgl_match.groups()
            msg_lines = []
        else:
            if line != 'OK':
                msg_lines.append(line)

    if msg_index != None and len(msg_lines) > 0:
        msg_text = '\n'.join(msg_lines)
        msg_lines = []
        messages.append((number, msg_time, msg_text))

    return messages

此函数将读取所有SMS并将其作为元组列表返回：[("+30000000000", "17/08/28,00:34:12+08", "RI"), ("+30000000000", "17/08/28,00:34:12+08", "RV") ...迭代该列表以检查数字是否有效并采取必要的措施：

for number, date, command in messages:
    if number != "+30000000000":
        continue
    if command == 'RI':
        self.call_1()
    elif command == 'RV':
        self.call_2()

使用SIM命令使用AT命令接收短信并拨打电话

1 个答案: