WOFY 发表于 2017-7-12 13:02
请问一下楼主定时器这样配置不是8KHz吗？TIM1_TimeBaseInit(9, TIM1_CounterMode_Up, 199, 0);
怎么达到2ms ...

#define TIM1_PERIOD                  199
#define TIM1_PRESCALER                  159
#define TIM1_REPTETION_COUNTER          0
/*500
信号频率 50Hz   0.02
采样率   500Hz  0.002  5个通道一次转换0.24us
*/
static void Timer1_Config()
{
  /*
  - TIM1CLK = 16 MHz
  - TIM1 counter clock = TIM1CLK / TIM1_PRESCALER+1 = 16 MHz/(159+1) = 100kHz
  */
  /* Time base configuration */
  TIM1_DeInit();
  adcDelay();  
  CLK_PeripheralClockConfig(CLK_Peripheral_TIM1, ENABLE);
  TIM1_TimeBaseInit(TIM1_PRESCALER, TIM1_CounterMode_Up, TIM1_PERIOD, TIM1_REPTETION_COUNTER);
}