Hi! I want to send the AT command "AT+CRSL=<10>" to the GSM shield. This command controls the buzzer volume, which I would like to mute. Without the GSM library, the command works as desired. However, with both GSM.h and SoftSerial.h included, an error is seen. A problem with SoftSerial.h and GSM3S…

Problem sending AT command to GSM Shield 2 to control buzzer sound level

dannable June 21, 2017, 6:37am 2

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