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标题: 超核K60 lptm模块脉冲计数总是为零 [打印本页]

作者: 小沐127 时间: 2016-1-14 20:58
标题: 超核K60 lptm模块脉冲计数总是为零
本帖最后由小沐127 于 2016-1-14 21:00 编辑

........
main()
{
........
LPTMR_Config();
   while(1)
      {
               LPTM_Value = LPTM_GetTimerCounterValue(LPTMR0);
               OLED_MixStr(0,0,"LPTM_Value:",1);
               OLED_ShowNum(80,0,LPTM_Value,5,12);
               LPTM_ResetTimeCounter(LPTMR0);
      }
}

..........
..........
#include "sys.h"
#include "lptm.h"
uint32_t LPTM_Value ;
void LPTMR_Config()
{
      LPTM_InitTypeDef LPTM_InitStruct1;
      LPTM_InitStruct1.LPTMxMap = LPTM_CH2_PC5;
      LPTM_InitStruct1.LPTM_InitCompareValue = 200;       //在PC模式下无意义
      LPTM_InitStruct1.LPTM_Mode = LPTM_Mode_PC_FALLING;    //下降沿触发计数模式
      LPTM_Init(&LPTM_InitStruct1);
      LPTM_ITConfig(LPTMR0,LPTM_IT_TCF,DISABLE);
}
...........
...........
#include "gpio.h"

void GPIO_Config()
{
//初始化默认的调试端口
GPIO_InitTypeDef GPIO_InitStruct1;
//初始化默认的调试端口
GPIO_InitStruct1.GPIOx = PTC;                            //C端口
GPIO_InitStruct1.GPIO_InitState = Bit_SET;             //初始化后输出高电平
GPIO_InitStruct1.GPIO_IRQMode = GPIO_IT_DISABLE;       //不时能中断
GPIO_InitStruct1.GPIO_Pin = GPIO_Pin_5;                //PC5引脚
GPIO_InitStruct1.GPIO_Mode = GPIO_Mode_IPU;             //
//执行GPIO初始化点亮LED
GPIO_Init(&GPIO_InitStruct1);

}

lptm模块最大频率是多少？

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