STM8S003 程序无法输出pwm的问题

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陈胖子|

楼主 | 2019-10-14 19:53 | 只看该作者回帖奖励

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PWM, STM8S003, TI, ni, BLE

stm8s003用tim1_ch2输出pwm 一直无法输出

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/*  添加库函数头文件 */

#include "stm8s.h"



//数码管0 ~ F的代码数组

//u8 const Data[16] = {0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0x88,0x83,0xc6,0xa1,0x86,0x8e};





void Init_pwm()

{

GPIO_Init(GPIOC, GPIO_PIN_2, GPIO_MODE_OUT_PP_LOW_FAST);   //输出推拉，低电平，10MHz

TIM1_DeInit(); 

TIM1_TimeBaseInit(0, TIM1_COUNTERMODE_UP, 800, 0x00);//250 

TIM1_OC2Init(TIM1_OCMODE_PWM1, TIM1_OUTPUTSTATE_ENABLE, TIM1_OUTPUTNSTATE_ENABLE, 400,

             TIM1_OCPOLARITY_LOW, TIM1_OCNPOLARITY_HIGH, TIM1_OCIDLESTATE_SET, 

            TIM1_OCNIDLESTATE_RESET);//50%占空比 

TIM1_CCxCmd(TIM1_CHANNEL_2, ENABLE); 

TIM1_OC2PreloadConfig(ENABLE); 

TIM1_CtrlPWMOutputs(ENABLE); //TIM1输出使能

TIM1_Cmd(ENABLE);//TIM1使能

 //TIM1->CCER1 |= 0x10; //开启OC2信号输出脚

// TIM1->CCMR2 = 0x60; //PWM1模式

// TIM1->CCR2H = 0x00; //占空比高位

 //TIM1->CCR2L = 0x37; //占空比低位

// TIM1->CCMR2 |= 0x08; //输出比较2预装载使能

}

void assert_failed(u8* file, u32 line)

{ 



  while (1)

 {

  }

}

void main(void)  

{

  //CLK_DeInit();//初始化clk相关寄存器为初始值

  CLK_HSIPrescalerConfig(CLK_PRESCALER_HSIDIV1); //内部时钟16M

  Init_pwm();

  enableInterrupts();

  while(1);

}