153 lines
5.9 KiB
C
153 lines
5.9 KiB
C
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include "pwm_out.h"
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void PB_PWMChannel_Init(TIM_TypeDef* TIMx, uint8_t Channel, uint16_t Prescaler,uint16_t Period, uint8_t GPIO_AF)
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{
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GPIO_InitTypeDef GPIO_InitStructure;
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TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
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TIM_OCInitTypeDef TIM_OCInitStructure;
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
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GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
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RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE); //使能GPIO外设和AFIO复用功能模块时钟
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if (TIMx == TIM1) {
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RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1, ENABLE);
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if (GPIO_AF == 0) {
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RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
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/******************************TIM1 Multiplexing Push-pull output*********************************************/
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if (Channel == 1)
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8;
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else if(Channel == 2)
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
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else if(Channel == 3)
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
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else if(Channel == 4)
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11;
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else return;
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GPIO_Init(GPIOA, &GPIO_InitStructure);
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} else if (GPIO_AF == 1 ) {
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}
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} else if (TIMx == TIM2) {
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RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);
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if (GPIO_AF == 0 ) {
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RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
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/******************************TIM1 Multiplexing Push-pull output*********************************************/
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if (Channel == 1)
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;
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else if (Channel == 2)
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1;
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else if (Channel == 3)
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;
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else if (Channel == 4)
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3;
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else return;
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GPIO_Init(GPIOA, &GPIO_InitStructure);
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} else if (GPIO_AF == 1) {
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}
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} else if (TIMx == TIM3) {
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RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3,ENABLE);
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if (GPIO_AF == 0) {
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/******************************TIM1 Multiplexing Push-pull output*********************************************/
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if (Channel == 1) {
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RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6;
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GPIO_Init(GPIOA, &GPIO_InitStructure);
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} else if (Channel == 2) {
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RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_7;
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GPIO_Init(GPIOA, &GPIO_InitStructure);
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} else if (Channel == 3) {
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RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;
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GPIO_Init(GPIOB, &GPIO_InitStructure);
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} else if (Channel == 4) {
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RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1;
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GPIO_Init(GPIOB, &GPIO_InitStructure);
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} else
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return;
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} else if (GPIO_AF == 1) {
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GPIO_Init(GPIOC, &GPIO_InitStructure);
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}
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} else if (TIMx == TIM4) {
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RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM4,ENABLE);
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if (GPIO_AF == 0) {
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RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);
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/******************************TIM1 Multiplexing Push-pull output*********************************************/
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if (Channel == 1)
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6;
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else if (Channel == 2)
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_7;
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else if (Channel == 3)
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8;
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else if (Channel == 4)
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
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else
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return;
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GPIO_Init(GPIOB, &GPIO_InitStructure);
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} else if (GPIO_AF == 1) {
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}
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}
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TIM_TimeBaseStructure.TIM_Prescaler = Prescaler;
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TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
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TIM_TimeBaseStructure.TIM_Period = Period;
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TIM_TimeBaseStructure.TIM_ClockDivision = 0;
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TIM_TimeBaseStructure.TIM_RepetitionCounter = 0;
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TIM_TimeBaseInit(TIMx, &TIM_TimeBaseStructure);
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TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM2;
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TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
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TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Disable;
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TIM_OCInitStructure.TIM_Pulse =0;
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TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_Low;
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TIM_OCInitStructure.TIM_OCNPolarity = TIM_OCNPolarity_High;
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TIM_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Set;
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TIM_OCInitStructure.TIM_OCNIdleState = TIM_OCIdleState_Reset;
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TIM_OCInitStructure.TIM_Pulse = 0;
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if (Channel == 1) {
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TIM_OC1Init(TIMx, &TIM_OCInitStructure);
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} else if (Channel == 2) {
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TIM_OC2Init(TIMx, &TIM_OCInitStructure);
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} else if (Channel == 3) {
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TIM_OC3Init(TIMx, &TIM_OCInitStructure);
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} else if (Channel == 4) {
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TIM_OC4Init(TIMx, &TIM_OCInitStructure);
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} else
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return;
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TIM_Cmd(TIMx, ENABLE);
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TIM_CtrlPWMOutputs(TIMx, ENABLE);
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}
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//Set Pulse Width
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void PB_Set_PWM(TIM_TypeDef* TIMx, uint8_t Channel, uint16_t Pwm_Value)
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{
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uint16_t TIM_PWM_Period;
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TIM_PWM_Period = TIMx->ARR;
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if (Pwm_Value <= 0) Pwm_Value = 0;
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if (Pwm_Value >= TIM_PWM_Period)
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Pwm_Value = TIM_PWM_Period;
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if (Channel == 1) {
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TIM_SetCompare1(TIMx, Pwm_Value);
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} else if (Channel == 2){
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TIM_SetCompare2(TIMx, Pwm_Value);
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} else if (Channel == 3) {
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TIM_SetCompare3(TIMx, Pwm_Value);
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} else if (Channel ==4 ) {
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TIM_SetCompare4(TIMx, Pwm_Value);
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} else
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return;
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}
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#ifdef __cplusplus
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}
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#endif
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