wip for sim800h dfrobot shield (mtk6260)

dependencies

- pip install serial

- pip install pyserial

import serial

# DFROBOT SHIELD works with 115200, ser = serial.Serial('/dev/ttyUSB0', 115200, timeout=0.1)

ser = serial.Serial('/dev/ttyUSB0', 57600, timeout=0.1)

print(ser.name)

resp = bytearray(b'\x00')

while True:

    print "sending mtk beacon 0xa0"

    ser.write(b'\xa0')

    ser.flush()

    ser.readinto(resp)

    print " ".join("{:02x}".format(c) for c in resp)

    if resp == b'\x5f':

        print "got beacon response 0x5f, writing rest of init 0x0a 0x50 0x05"

        ser.write(b'\x0a\x50\x05')

        ser.flush()

        resp2 = ser.read(3)

        if resp2 == b'\xf5\xaf\xfa':

            print "got beacon response 0xf5 0xaf 0xfa"

            break

print "writing read address request 0xa2"

ser.write(b'\xa2')

ser.flush()

if (ser.read(1) == b'\xa2'):

    print "got read addr ack 0xa2, writing addr 0x80 0x00 0x00 0x08"

    ser.write(b'\x80\x00\x00\x08')

    ser.flush()

    resp2 = ser.read(4)

    print "got addr ack"

    print " ".join("{:02x}".format(ord(c)) for c in resp2)

    print "send read 1 word"

    ser.write(b'\x00\x00\x00\x01')

    ser.flush()

    resp2 = ser.read(6)

    print "read response:"

    print " ".join("{:02x}".format(ord(c)) for c in resp2)

    print "chip type is: {0:02x}{1:02x}".format(ord(resp2[4]),ord(resp2[5]))

else:

    print("bad response")

ser.close()