新塘NUC131怎么通过修改官方库函数修改定时器级别

只看该作者 · 2018-11-30 13:47

这是新塘提供的，但是它的参数是s级别的定时，也就是1s起，但是我想用到ms级别的，怎么通过那两个修改比较值和重载值函数，求教，比如时钟我就选HCLK

只看该作者 · 2018-11-30 22:23

楼主这个你要看头文件了。

只看该作者 · 2018-11-30 22:24

/**
  * @brief    Open Timer with Operate Mode and Frequency
  *
  * @param[in]  timer    The pointer of the specified Timer module. It could be TIMER0, TIMER1, TIMER2, TIMER3.
  * @param[in]  u32Mode    Operation mode. Possible options are
  *                      - \ref TIMER_ONESHOT_MODE
  *                      - \ref TIMER_PERIODIC_MODE
  *                      - \ref TIMER_TOGGLE_MODE
  *                      - \ref TIMER_CONTINUOUS_MODE
  * @param[in]  u32Freq    Target working frequency
  *
  * @return    Real timer working frequency
  *
  * @Details This API is used to configure timer to operate in specified mode and frequency.
  *          If timer cannot work in target frequency, a closest frequency will be chose and returned.
  * @NOTE    After calling this API, Timer is \b NOT running yet. But could start timer running be calling
  *          \ref TIMER_Start macro or program registers directly.
  */
uint32_t TIMER_Open(TIMER_T *timer, uint32_t u32Mode, uint32_t u32Freq)
看到这个没，最后一个参数就是频率。你看你那个，是个1，也就是1秒中断1次，如果你想用1ms，那这里就是改成1000，如果想用1us那就是1000000