Execution blocked on SIM800_SendCommand

[mde398]

During the MQTT initialization (function MQTT_Init), the execution suddenly blocks on SIM800_SendCommand.

Below is a screenshot showing where the code stop working.

I'm not able to understand why the code execution stops right there.

Do you have any suggstion on what to debug?

Thanks,

[leech001]

Hi. Check the settings for module response delays in the file MQTTSim800.h If you don't use FREERTOS, you should have the parameter FREERTOS set to 0.

// === CONFIG ===
#define UART_SIM800 &huart2
#define FREERTOS    0
#define CMD_DELAY   2000
// ==============

If you use FREERTOS, you should have the parameter FREERTOS set to 1.