//----------------------------------------------------------------------
//  MM32 example Timer INT
//  MM32L073
//  LED = B0
//----------------------------------------------------------------------
#include <stddef.h>
#include <stdlib.h>
#include "hardware.h"

void initApplication()
{
    // System timer initialization
    SysTick_Config(SystemCoreClock/100);
 
    // Enable GPIOB clock
    RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOB, ENABLE);
 
    // Configure PB0
    GPIO_InitTypeDef GPIO_InitStructure;
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_Init(GPIOB, &GPIO_InitStructure);
 
    // Enable TIM16 clock
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM16, ENABLE);
 
    // Timer configuration
    TIM_TimeBaseInitTypeDef TIM_TimeBase_InitStructure;
    TIM_TimeBase_InitStructure.TIM_ClockDivision = TIM_CKD_DIV1;
    TIM_TimeBase_InitStructure.TIM_CounterMode = TIM_CounterMode_Up;
    TIM_TimeBase_InitStructure.TIM_Period = 4800;
    TIM_TimeBase_InitStructure.TIM_Prescaler = 10000;
    TIM_TimeBaseInit(TIM16, &TIM_TimeBase_InitStructure);
    TIM_ITConfig(TIM16, TIM_IT_Update, ENABLE);
 
    // Enable timer
    TIM_Cmd(TIM16, ENABLE);
 
    // NVIC configuration
    NVIC_InitTypeDef NVIC_InitStructure;
    NVIC_InitStructure.NVIC_IRQChannel = TIM16_IRQn;
    NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
    NVIC_InitStructure.NVIC_IRQChannelPriority = 0x03;
    NVIC_Init(&NVIC_InitStructure);
}
 
int main(void)
{
    SystemInit();
    initApplication();
    
    while(1)
    {
        // Empty main loop
    }
}
 
void SysTick_Handler(void)
{
    // Empty SysTick handler
}
 
void TIM16_IRQHandler(void)
{  
    static bool state=false;
    if (state) GPIO_ResetBits(GPIOB, GPIO_Pin_0);
    else GPIO_SetBits(GPIOB, GPIO_Pin_0);
    state=!state;
    TIM_ClearITPendingBit(TIM16, TIM_IT_Update);
}
//-----------------------------------------------------------------------------

Nutzen sie die Schaltflächen Kompilieren, Linken und Brennen. Stellen Sie die nötigen Verbindungen auf dem Board mit den dafür vorgesehenen Patchkabeln her. Testen Sie die Anwendung.

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