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Did your modem registered to network successfully?
Confirm it by calling to the modem from other mobile.
Did you send <cr><lf> after the AT command?
CR an LF are control characters, respectively coded 0x0D (13 decimal) and 0x0A (10 decimal).
Use the serial port of the microcontroller with the TX/RX module, but make sure the baud rate is below 500.
Baud rate with 300 works fine for me. Check out this project https://www.8051projects.info/proj.asp?ID=49
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Re: Can 89S programmed using USBasp?
With the changed firmware, you can burn AT89s52 through AVRDUDE.
Add this lines in the text file into the avrdude.conf(\winavr\bin\)
#------------------------------------------------------------
# AT89S52...
bluetooth microchip
1) you have to pair the PC and the Bluetooth module. The Bluetooth module will have a default PIN. If every things go ok, then you dont need to do that again & again. The PC will automatically create a Virtual Serial port and you can use that port number to access the...
89c51 interfaced to zigbee
Check out this site for the project with Bluetooth which can control 8 devices from symbian os mobile phones by 8051 Microcontroller.
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