STM32定时器输出PWM控制电机

配置定时器1输出PWM，通过查询方式获取按键是否按下，KEY1按下增加占空比；KEY2按下减少占空比。

#include "stm32f10x.h"

#include "led.h"

#include "sys.h"

#include "delay.h"

#include "timer.h"

#include "motor.h"

#include "key.h"

int i = 200;

int main()

{

int value;

Key_Init();

MOTOR_Init();

TIM1_PWM1_Init(500-1,72-1); //0.1ms

while(1)

{

value = Key_Scan();

switch(value)

{

case 1:

if(i > 500)  i = 200;

else  i += 10;

TIM_SetCompare1(TIM1,i);

break;

case 2: