#include "led.h"
#include "delay.h"
#include "key.h"
#include "sys.h"
#include "usart.h"
#include "timer.h"
int main(void)
{
delay_init();
TIM2_PWM_Init(199,7199);
while(1)
{
TIM_SetCompare2(TIM3,5);
delay_ms(1000);
TIM_SetCompare2(TIM3,10);
delay_ms(1000);
TIM_SetCompare2(TIM3,15);
delay_ms(1000);
TIM_SetCompare2(TIM3,20);
delay_ms(1000);//
TIM_SetCompare2(TIM3,15);
delay_ms(1000);
TIM_SetCompare2(TIM3,10);
delay_ms(1000);
}
}
void TIM2_PWM_Init(u16 arr,u16 psc)
{
GPIO_InitTypeDef GPIO_InitStructure;
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
TIM_OCInitTypeDef TIM_OCInitStructure;
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB | RCC_APB2Periph_AFIO, ENABLE); //ê1ÄüGPIOíaéèoíAFIO¸′óÃ1|ÄüÄ£¿éê±Öó
GPIO_PinRemapConfig(GPIO_PartialRemap_TIM3, ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOB, &GPIO_InitStructure);
TIM_TimeBaseStructure.TIM_Period = arr;
TIM_TimeBaseStructure.TIM_Prescaler =psc;
TIM_TimeBaseStructure.TIM_ClockDivision = 0;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure);
TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM2;
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_Low;
TIM_OC2Init(TIM3, &TIM_OCInitStructure);
TIM_OC2PreloadConfig(TIM3, TIM_OCPreload_Enable);
TIM_Cmd(TIM3, ENABLE);
}
后来也产生如图的信号了,但舵机就是不转。
好急,帮帮我看看,我是新手,也没多少金币,可怜下吧!!!
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把TIM_SetCompare2(TIM3,5); 改成TIM_SetCompare2(TIM2,5); 就好了
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