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Hi all,
I am facing a very critical problem. We are using GSM chip SIMCOM sim800h with STM32L152 microcontroller.
We designed a 4 layer PCB. Problem is Microcontroller is going to when the GSM modem communicating with the tower.
When we switch on the modem we can see the hard fault exceptions...
Hi amitaiwe,
Depending on the oscillator vlaue ur using u should change SPBUG(Baud Rate Generator Register). Please refer table 10.3 in the datasheet. Bluetooth module (RN42SM) dafault burd rate is 9600 so if u use 20MHz oscillator the value of SPBUG is 31, 9600 BURD will be selected. I suggest...
Thanks you cl10greg. Thanks for you reply.
when i searched on Dual mode I found this
**broken link removed**
And TI CC256X are dual mode Bluetooth devices:) .
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