AM-335X EVM BUZZER TEST

Hello Naveen,

You can enable/disable the buzzer on AM335x GP EVM by toggling the GPIO1_23.

root@am335x-evm:/sys/class/gpio# echo 55 > export
root@am335x-evm:/sys/class/gpio# cd gpio55
root@am335x-evm:/sys/class/gpio/gpio55# echo out > direction
root@am335x-evm:/sys/class/gpio/gpio55# echo 1 > value
root@am335x-evm:/sys/class/gpio/gpio55# echo 0 > value

Best regards,
Kemal

Dear Kemal,

thanks for your reply finally it is working.....i have a one doubt how did you find that is connected to gpio 55 i refred the data sheet there is nothing mentioned.

Hello Naveen,

I refer to this Pin Use Assignment table. Here the assigned pin to GP(AudioBuzzer) is gpmc_a7 T15, which in PINMUX mode 7 functions as gpio1[23], 1*32+23=55.

Best regards,
Kemal

Dear kemal,

this line i didn't understand can you elaborate that "which in PINMUX mode 7 functions as gpio1[23]"

Hi Naveen,

Please, see this snippet from the TI Pin Mux Utility tool.

Best regards,
Kemal