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26 stm32/timer: Use APB2 to calculate timer 20 source frequency. · micropython/micropython@91386b3 · GitHub
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stm32/timer: Use APB2 to calculate timer 20 source frequency.
Signed-off-by: Herwin Grobben <h.grobben@aemics.nl>
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‎ports/stm32/timer.c

+2-2
Original file line numberDiff line numberDiff line change
@@ -264,8 +264,8 @@ uint32_t timer_get_source_freq(uint32_t tim_id) {
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#else
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uint32_t source, clk_div;
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if (tim_id == 1 || (8 <= tim_id && tim_id <= 11)) {
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// TIM{1,8,9,10,11} are on APB2
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if (tim_id == 1 || (8 <= tim_id && tim_id <= 11) || tim_id == 20) {
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// TIM{1,8,9,10,11,20} are on APB2
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#if defined(STM32F0) || defined(STM32G0)
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source = HAL_RCC_GetPCLK1Freq();
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clk_div = RCC->CFGR & RCC_CFGR_PPRE;

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