34 lines
776 B
C++
34 lines
776 B
C++
#include "stm32g4xx.h"
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#include "tim.h"
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static void (*TIM7_Proc)() = 0;
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extern "C" void TIM7_IRQHandler()
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{
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TIM7->SR = 0;
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TIM7_Proc();
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}
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//------------------------------------------------------------------------------
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void TIM7_Init(long Priority)
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{
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RCC->APB1ENR1 |= RCC_APB1ENR1_TIM7EN;
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TIM7->CR1 = 0;
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TIM7->ARR = 1000 - 1;
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TIM7->DIER = TIM_DIER_UIE;
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NVIC_SetPriority(TIM7_IRQn, Priority);
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NVIC_EnableIRQ(TIM7_IRQn);
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}
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//------------------------------------------------------------------------------
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void TIM7_Update(unsigned long Freq, void (*Proc)())
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{
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TIM7->CR1 = 0;
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TIM7->PSC = (SystemCoreClock / 1000 / Freq) - 1;
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TIM7_Proc = Proc;
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TIM7->CR1 = TIM_CR1_CEN;
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}
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//------------------------------------------------------------------------------
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