Hi,Hope you are doing good.I am trying to transmit "AT" command using USART communication to SIM800A(SIM.COM). I am facing errors, should I write a separate GSM module. Thank you. 

Hi STM Community, I was trying to use USART2 on NUCLEO-G491RE board, but it is disabled from the start. It is highlighted in Pink and I am not able to edit it.  Can you please tell me how to make it work ? Thank you. Appreciate it. Regards, STMUSER  ...