Closed digidhamu closed 2 years ago
Did you change baudrate of both MCU and SIM800 to the same value?
Changing baudrate of SIM800 needs a working communication and sending "AT+IPR=<new baudrae>\r\n"
to the module.
After successfully changing SIM800's baudrate, it's time to change baudrate of MCU itself to the new value.
They can communicate only if both side have the same baudrate.
I didn't setup baud rate SIM800 via AT+IPR=<new baudrae>\r\n
command. Thought that will automatically switch over.
SIM800C module is failed to work when I set the higher baud rate other than 9600.
Is this a limitation of GSM libs or anything I am missing?