how to configure BUZZER IN NRF51 EVB

[MARTIN FR]

Hello everyone

i am trying to configure the buzzer int he development board inordert o create the buzzer beep sound i have configured the GPIO pin 14 fir the buzzer so in the pin 14 of the developement i connected the positive to 14 and negative to gnd like that i ahve to configure or something else any suggestion will be helpful

main.c

[Ole Bauck]

You can connect the buzzer directly to the pin as it is done on the mbed Application Shield. However be aware that the maximum current that can be sourced from any pin on the nRF51 is 5 mA. It may also be less (0.5mA) if the pin is not configured in high drive. For this reason I would suggest to use a transistor in between the nRF51 chip and the buzzer.

[Ole Bauck]

With this code you will get a short circuit, and as explained in another post, you should not connect to pins together and use the pwm driver on both. Are you sure that the buzzer is able to make higher sound at this voltage? Could you try with a transistor or a function generator that can deliver enough current? If the buzzer makes to little sound at Vcc, you will have to have more voltage.