1、PWM
PWM配置
- 配置时基单元
- 配置输出比较单元
- 配置输出PWM波的端口
#include "stm32f10x.h"
void PWM_Init(void)
{
RCC_APB2PeriphClockCmd (RCC_APB2Periph_GPIOA, ENABLE);
GPIO_InitTypeDef GPIO_InitStruct;
GPIO_InitStruct.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStruct.GPIO_Pin = GPIO_Pin_0;
GPIO_InitStruct.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA, &GPIO_InitStruct);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);
TIM_InternalClockConfig(TIM2);
TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStruct;
TIM_TimeBaseInitStruct.TIM_ClockDivision = TIM_CKD_DIV1;
TIM_TimeBaseInitStruct.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInitStruct.TIM_Period = 100 - 1;
TIM_TimeBaseInitStruct.TIM_Prescaler = 720 - 1;
TIM_TimeBaseInitStruct.TIM_RepetitionCounter = 0;
TIM_TimeBaseInit(TIM2, &TIM_TimeBaseInitStruct);
TIM_OCInitTypeDef TIM_OCInitStruct;
TIM_OCStructInit(&TIM_OCInitStruct);
TIM_OCInitStruct.TIM_OCMode = TIM_OCMode_PWM1;
TIM_OCInitStruct.TIM_OCPolarity = TIM_OCPolarity_High;
TIM_OCInitStruct.TIM_OutputState = TIM_OutputState_Enable;
TIM_OCInitStruct.TIM_Pulse = 0;
TIM_OC1Init(TIM2, &TIM_OCInitStruct);
TIM_Cmd(TIM2, ENABLE);
}
void PWM_SetCompare1(uint16_t Compare)
{
TIM_SetCompare1(TIM2, Compare);
}
2、输入捕获配置
#include "stm32f10x.h"
void IC_Init(void)
{
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
GPIO_InitTypeDef GPIO_InitStruct;
GPIO_InitStruct.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStruct.GPIO_Pin = GPIO_Pin_6;
GPIO_InitStruct.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA, &GPIO_InitStruct);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE);
TIM_InternalClockConfig(TIM3);
TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStruct;
TIM_TimeBaseInitStruct.TIM_ClockDivision = TIM_CKD_DIV1;
TIM_TimeBaseInitStruct.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInitStruct.TIM_Period = 65536 - 1;
TIM_TimeBaseInitStruct.TIM_Prescaler = 72 - 1;
TIM_TimeBaseInitStruct.TIM_RepetitionCounter = 0;
TIM_TimeBaseInit(TIM3, &TIM_TimeBaseInitStruct);
TIM_ICInitTypeDef TIM_ICInitStruct;
TIM_ICInitStruct.TIM_Channel = TIM_Channel_1;
TIM_ICInitStruct.TIM_ICFilter = 0x10;
TIM_ICInitStruct.TIM_ICPolarity = TIM_ICPolarity_Rising;
TIM_ICInitStruct.TIM_ICPrescaler = TIM_ICPSC_DIV1;
TIM_ICInitStruct.TIM_ICSelection = TIM_ICSelection_DirectTI;
TIM_ICInit(TIM3, &TIM_ICInitStruct);
TIM_PWMIConfig(TIM3, &TIM_ICInitStruct);
TIM_SelectInputTrigger(TIM3, TIM_TS_TI1FP1);
TIM_SelectSlaveMode(TIM3, TIM_SlaveMode_Reset);
TIM_Cmd(TIM3, ENABLE);
}
uint32_t IC_GetFreq(void)
{
return 1000000 / ((TIM_GetCapture1(TIM3)) + 1);
}
uint32_t IC_GetDuty(void)
{
return ((TIM_GetCapture2(TIM3) + 1) * 100)/(TIM_GetCapture1(TIM3) + 1);
}
3、编码器
#include "stm32f10x.h"
void Encoder2_Init(void)
{
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
GPIO_InitTypeDef GPIO_InitStruct;
GPIO_InitStruct.GPIO_Mode = GPIO_Mode_IPU;
GPIO_InitStruct.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_7;
GPIO_InitStruct.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA, &GPIO_InitStruct);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE);
TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStruct;
TIM_TimeBaseInitStruct.TIM_ClockDivision = TIM_CKD_DIV1;
TIM_TimeBaseInitStruct.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInitStruct.TIM_Period = 65536 - 1;
TIM_TimeBaseInitStruct.TIM_Prescaler = 1 - 1;
TIM_TimeBaseInitStruct.TIM_RepetitionCounter = 0;
TIM_TimeBaseInit(TIM3, &TIM_TimeBaseInitStruct);
TIM_ICInitTypeDef TIM_ICInitStruct;
TIM_ICStructInit(&TIM_ICInitStruct);
TIM_ICInitStruct.TIM_Channel = TIM_Channel_1;
TIM_ICInitStruct.TIM_ICFilter = 0xF;
TIM_ICInit(TIM3, &TIM_ICInitStruct);
TIM_ICInitStruct.TIM_Channel = TIM_Channel_2;
TIM_ICInitStruct.TIM_ICFilter = 0xF;
TIM_ICInit(TIM3, &TIM_ICInitStruct);
TIM_EncoderInterfaceConfig( TIM3,
TIM_EncoderMode_TI12,
TIM_ICPolarity_Rising,
TIM_ICPolarity_Rising);
TIM_Cmd(TIM3, ENABLE);
}
int16_t Encoder_Get(void)
{
return TIM_GetCounter(TIM3);
}
int16_t Encoder_GetSpeed(void)
{
int16_t Temp_Count = TIM_GetCounter(TIM3);
TIM_SetCounter(TIM3, 0);
return Temp_Count;
}