MOD GSM

[bimodh]

Does MOD-GSM has a default firmware loaded?

[olimex]

sure it have the firmware loaded

[bimodh]

But I tried the communication, but it is not happening. I connected the MOD-GSM unit with my A13 Board and tried to access the same in my Linux, but no communication was happening. Moreover, I tried the data on the Tx and Rx of UEXT with an oscilloscope too, still nothing was shown. Why is it so?

[LubOlimex]

Hey bimodh,

The problem is probably in the A13 Linux image not in the MOD-GSM. Try to stop the debug terminal since it uses the UEXT UART. You can debug via SSH.

Please refer to this post: https://www.olimex.com/forum/index.php?topic=742.0.

Best regards,
Lub/OLIMEX

[bimodh]

Thanks for the reply.


I tried the Tx and Rx Pins of UEXT of MOD-GSM Module with the Oscilloscope, there was also no data communication happening. Does that mean the MOD-GSM module is not having a firmware itself?

Moreover, I tried connecting the MOD-GSM with the MOD-USB-RS232 converter in my windows system over hyper-terminal too. Still, nothing was happening.

Now, what is the call?

[LubOlimex]

Hello bimodh,

The problem is probably in the MOD-USB-RS232. There is a high chance that the MOD-USB-RS232 you received was shipped without the final firmware it needs. The situation is further explained here: https://www.olimex.com/forum/index.php?topic=810.msg3644#msg3644

Sorry for the incontinence caused.

Best regards,
Lub/OLIMEX