Infineon PWM Buzzer 1 Manual page 6

Pwm controlled melody on buzzer, aurix tc2xx microcontroller training

Implementation

Configuration of the variable timerCfg

Setting of the timerCfg variable is done once in the setup phase in the function

initPWMBuzzer() with the following steps:

›

Set TOM1 as the timer for generating the PWM signal

timerCfg.tom = IfxGtm_Tom_1

›

Set the channel 4 of TOM1 as the channel used for the timer

timerCfg.timerChannel = IfxGtm_Tom_Ch_4

›

Select the clock source

timerCfg.clock = IfxGtm_Tom_Ch_ClkSrc_cmuFxclk2

›

Set port and pin for PWM output

timerCfg.triggerOut = &IfxGtm_TOM1_4_TOUT22_P33_0_OUT

›

Enable TOM channel

timerCfg.base.trigger.enabled = TRUE

›

Enable TOM channel output

timerCfg.base.trigger.outputEnabled = TRUE

›

Starting PWM with rising edge

timerCfg.base.trigger.risingEdgeAtPeriod = TRUE

2019-10-17