S32K中的主题 Re: Interfacing a buzzer with s32k118 microcontroller and also changing its frequency

Interfacing a buzzer with s32k118 microcontroller and also changing its frequency

SteveSam — Mon, 21 Aug 2023 07:35:30 GMT

Hi, Im new to the embedded world and just getting started...and i would like to know how to interface an buzzer with this board

regards,

Steve

Re: Interfacing a buzzer with s32k118 microcontroller and also changing its frequency

PetrS — Tue, 22 Aug 2023 06:20:39 GMT

Hi,

depending on type of buzzer a direct connection to MCU output is most probably not possible and simple transistor should be used, like below.

If you want to generate PWM signal then choose a pin ideally with FTM functionality. FTM channel can be configured for various output modes with PWM as well. Refer to device RM for more info.

Basic FTM examples can be found within S32 Design Studio.

BR, Petr

Re: Interfacing a buzzer with s32k118 microcontroller and also changing its frequency

SteveSam — Tue, 22 Aug 2023 17:23:13 GMT

hi, Ive learnt how to generate a pwm signal and change its frequency but the buzzer still does not work...I have a buzzer with 3 pins (vcc,gnd,io ) and i wonder if still have to use a transistor.

Re: Interfacing a buzzer with s32k118 microcontroller and also changing its frequency

SteveSam — Wed, 23 Aug 2023 03:34:25 GMT

and im using the j4 ptd15 pin for the sample code ftm_pwm_s32k118 with a frequency of 2000u ,3000u changed in flexTimer_pwm_1_PwmConfig please help