Hello members,
I need to send commands to my GSM module via UART (RX/TX) TTL pins on my ESP board.
Here https://www.letscontrolit.com/wiki/inde ... _Reference
I found information about "Serial (TTL) <command> Send commands using serial (RX/TX). Just type the <command>"
But I do not know, how to send AT command to my device and receive OK status.
can someone help me?
Thanks, Milan.
Comunication with GSM via UART
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