I want to use ARM9 plus a GPRS module to send MMS and make a MMS MODEM. I have used a module that supports the MMS protocol, which seems to be IWOW. This module has the MMS protocol embedded, and send...
AT89S51 MCU controls GSM module (M22) to send SMS program~~ Everyone, take a look, is this program feasible? I hope friends who have worked with GSM can give more suggestions to improve the program! /...
[i=s]This post was last edited by y909334873 on 2019-2-19 14:41[/i] I cleaned up the house today and packed some unused boards and put them on Xianyu. It's my first time using Xianyu and I don't have ...
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Has anyone analyzed the IC card protocol? I am currently working on a SIM card driver and do not understand much about the protocol. Can you tell me about the PTS process? Also, the value of TC1 and g...
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