gsm module library for STM32 LL

• Author: Nima Askari
• WebSite: https://www.github.com/NimaLTD
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• This library using my 'atc' library, please download 'http://github.com/nimaltd/atc'.

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• NONE RTOS Supported.
• RTOS V1 Supported.
• RTOS V2 Supported.

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• SIM800C tested.
• SIM800 tested.
• SIM800H tested.

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• Enable USART (LL Library) and RX interrupt.
• Enable a gpio as output and open drain to connect gsm power button.
• Add gsm and atc library to your project.
• Configure gsmConfig.h and atcConfig.h files.
• Add 'gsm_rxCallback()' to selected usart interrupt.
• Call gsm_init().
• Call gsm_loop() in infinit loop.
• If using FREERTOS, please create a task for gsm with at least 512 word heap size.

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None RTOS example:

• file atcConfig.h

#define	_ATC_DEBUG            0       //  use printf debug
#define	_ATC_RTOS             0       //  0: no rtos    1: cmsis_os v1    2: cmsis_os v2
#define	_ATC_RXSIZE           1024    //  at-command rx buffer size
#define	_ATC_SEARCH_CMD_MAX   5       //  maximum of answer in at-command
#define	_ATC_SEARCH_MAX       10      //  maximum	of always search in buffer
#define	_ATC_RXTIMEOUT_MS     50      //  rx timeout to get new packet

• file main.c

#include "gsm.h"

int main()
{
  gsm_init();
  gsm_power(true);
  gsm_waitForRegister(30);
  gsm_msg_send("+98xxxxxxx", "TEST MSG 1");
  while (1)
  {
    gsm_loop();
  }  
}

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RTOS example:

• file atcConfig.h

#define	_ATC_DEBUG            0       //  use printf debug
#define	_ATC_RTOS             1       //  0: no rtos    1: cmsis_os v1    2: cmsis_os v2
#define	_ATC_RXSIZE           1024    //  at-command rx buffer size
#define	_ATC_SEARCH_CMD_MAX   5       //  maximum of answer in at-command
#define	_ATC_SEARCH_MAX       10      //  maximum	of always search in buffer
#define	_ATC_RXTIMEOUT_MS     50      //  rx timeout to get new packet

• file main.c

#include "gsm.h"

int main()
{
  ...  
}

void task_gsm(void const * argument)
{
  gsm_init();
  gsm_power(true);
  while (1)
  {
    gsm_loop();
  }
}

void task_other(void const * argument)
{
  gsm_waitForRegister(30);
  gsm_msg_send("+98xxxxxxx", "TEST MSG 1");
  while (1)
  {    
    osDelay(10000);
  }
}