py32f0-template/Examples/LL/TIM/TIM1_TimeBase/main.c

/***
 * Demo: TIM1 Update Interrupt
 */
#include "main.h"
#include "py32f0xx_bsp_printf.h"


static void APP_GPIOConfig(void);
static void APP_SystemClockConfig(void);
static void APP_TIM1Config(void);

int main(void)
{
  APP_SystemClockConfig();
  APP_GPIOConfig();
  BSP_USART_Config(115200);
  printf("TIM1 Interrupt Demo\r\nClock: %ld\r\n", SystemCoreClock);

  APP_TIM1Config();
  while (1);
}

static void APP_TIM1Config(void)
{
  LL_TIM_InitTypeDef TIM1CountInit = {0};

  LL_APB1_GRP2_EnableClock(RCC_APBENR2_TIM1EN);
  
  TIM1CountInit.ClockDivision       = LL_TIM_CLOCKDIVISION_DIV1;
  TIM1CountInit.CounterMode         = LL_TIM_COUNTERMODE_UP;
  TIM1CountInit.Prescaler           = 8000-1;
  TIM1CountInit.Autoreload          = 1000-1;
  TIM1CountInit.RepetitionCounter   = 0;
  LL_TIM_Init(TIM1,&TIM1CountInit);

  LL_TIM_EnableIT_UPDATE(TIM1);
  LL_TIM_EnableCounter(TIM1);

  NVIC_EnableIRQ(TIM1_BRK_UP_TRG_COM_IRQn);
  NVIC_SetPriority(TIM1_BRK_UP_TRG_COM_IRQn,0);
}

static void APP_SystemClockConfig(void)
{
  LL_RCC_HSI_Enable();
  while(LL_RCC_HSI_IsReady() != 1);

  LL_RCC_SetSysClkSource(LL_RCC_SYS_CLKSOURCE_HSISYS);
  while(LL_RCC_GetSysClkSource() != LL_RCC_SYS_CLKSOURCE_STATUS_HSISYS);
  LL_RCC_SetAHBPrescaler(LL_RCC_SYSCLK_DIV_1);
  LL_RCC_SetAPB1Prescaler(LL_RCC_APB1_DIV_1);

  LL_Init1msTick(8000000);
  LL_SetSystemCoreClock(8000000);
}

static void APP_GPIOConfig(void)
{
  /* Set PB5 as GPIO output */
  LL_IOP_GRP1_EnableClock(LL_IOP_GRP1_PERIPH_GPIOB);
  LL_GPIO_SetPinMode(GPIOB, LL_GPIO_PIN_5, LL_GPIO_MODE_OUTPUT);
}

void APP_TIM1UpdateCallback(void)
{
  LL_GPIO_TogglePin(GPIOB, LL_GPIO_PIN_5);
}

void APP_ErrorHandler(void)
{
  while (1);
}