dpl: add TimerP helpers for overflow, compare, and PWM #21
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Introduce a new helper in TimerP to configure the TIMER_TOWR register. - TIMER_TOWR (Timer Overflow Wrapper Register) is 16-bit wide and defines how many overflow events are masked before an interrupt is generated. - For example, writing 3 causes the timer to raise the overflow interrupt only on the third overflow occurrence. - This allows coarser interrupt pacing and can help reduce ISR load. The new function provides a simple and safe way to program this register. Signed-off-by: Rafael V. Volkmer <[email protected]>
The TIMER_TMAR register stores the timer compare value. When the counter matches this value, a compare event is triggered. This commit adds the TimerP_setCompare() function to allow setting the compare value through the DPL API, enabling users to configure the timer compare register without direct register access. Signed-off-by: Rafael V. Volkmer <[email protected]>
Introduce TimerP_configPwm() to configure the GP timer for PWM output. The helper programs TLDR/TCRR/TMAR based on frequency and duty cycle, using a nanosecond timebase and a 32-bit counter range. This provides a safer, single entry point to set PWM frequency and duty cycle while preserving the DPL timer semantics. Signed-off-by: Rafael V. Volkmer <[email protected]>
RafaelVVolkmer
requested review from
venkatesan-krishnamoorthy and
shiva-ti
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This PR extends the DPL TimerP API with new helper functions to simplify
and safely configure timer registers on AM62Ax/AM62Px devices.
1. Add TimerP helper for TIMER_TOWR
3raises the overflow interrupt only on the third overflow occurrence.2. Add TimerP_setCompare for TIMER_TMAR
3. Add TimerP_configPwm() helper