TIM1为何没有PWM输出【悬赏问答】

nj_jacky

请问：
          使用STM32F103VCT6的TIM1输出4路PWM（PA8，PA9，PA10，PA11）。当TIM1->CCRx（x=1,2,3，4）的值  >=  TIM1->ARR的值时，PA8，PA9，PA10没有输出高电平，PA11能够输出高电平，不知为何？

nj_jacky

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8 | GPIO_Pin_9 | GPIO_Pin_10 | GPIO_Pin_11;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_Init(GPIOA, &GPIO_InitStructure);

//====================================//
void PWM_FROM_TIM1_Configuration(void)
{
TIM_TimeBaseInitTypeDef TIM_BaseInitStructure;
TIM_OCInitTypeDef TIM_OCInitStructure;
// TIM_BDTRInitTypeDef TIM1_BDTRInitStructure;
//TIM1_OC1:set PWM channel 1 duty
TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Disable;
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
TIM_OCInitStructure.TIM_OCNPolarity = TIM_OCNPolarity_High;
TIM_OCInitStructure.TIM_Pulse = PWM_DUTY_0_PERCENT;
TIM_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Reset;
TIM_OCInitStructure.TIM_OCNIdleState = TIM_OCIdleState_Reset;
//TIM1_OC1:set PWM channel 1 duty
TIM_OC1Init(TIM1, &TIM_OCInitStructure);
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
TIM_OCInitStructure.TIM_Pulse = PWM_DUTY_0_PERCENT;
TIM_OC1PreloadConfig(TIM1, TIM_OCPreload_Enable);
//TIM1_OC2:set PWM channel 2 duty
TIM_OC2Init(TIM1, &TIM_OCInitStructure);
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
TIM_OCInitStructure.TIM_Pulse = PWM_DUTY_0_PERCENT;
TIM_OC2PreloadConfig(TIM1, TIM_OCPreload_Enable);
//TIM1_OC3:set PWM channel 3 duty
TIM_OC3Init(TIM1, &TIM_OCInitStructure);
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
TIM_OCInitStructure.TIM_Pulse = PWM_DUTY_0_PERCENT;
TIM_OC3PreloadConfig(TIM1, TIM_OCPreload_Enable);
//TIM1_OC4:set PWM channel 4 duty
TIM_OC4Init(TIM1, &TIM_OCInitStructure);
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
TIM_OCInitStructure.TIM_Pulse = PWM_DUTY_0_PERCENT;
TIM_OC4PreloadConfig(TIM1, TIM_OCPreload_Enable);
//TIM1 base counter(PWM frequency is 100Hz)
//72MHz/TIM_PRESCALER=1MHz,PWM Frequency = 1MHz / PWM_PERIOD
TIM_BaseInitStructure.TIM_Prescaler = TIM_PRESCALER-1;
TIM_BaseInitStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_BaseInitStructure.TIM_Period = PWM_PERIOD-1;
TIM_BaseInitStructure.TIM_ClockDivision = 0;
TIM_BaseInitStructure.TIM_RepetitionCounter = 0;
TIM_TimeBaseInit(TIM1, &TIM_BaseInitStructure);
TIM_ARRPreloadConfig(TIM1, ENABLE);
TIM_ClearITPendingBit(TIM1, TIM_IT_Update | TIM_IT_CC1 | TIM_IT_CC2 | TIM_IT_CC3 | TIM_IT_CC4);
//open TIM1
TIM_Cmd(TIM1, ENABLE);
//enable TIM1_CO to enable PWM channel x(must be added)
TIM_CtrlPWMOutputs(TIM1, ENABLE);
}

yjwpm

你检查一下你的TIM1的配置,还有就是你配置的 互补模式吗?

zykzyk-93033

你看看:
#include "stm32f10x.h"
#include "stm32f10x_tim.h"
#include "stm32f10x_rcc.h"
#include "stm32f10x_flash.h"
#include "stm32f10x_gpio.h"
#include "misc.h"
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
TIM_TimeBaseInitTypeDef  TIM1_TimeBaseStructure;
TIM_OCInitTypeDef  TIM1_OCInitStructure;
TIM_BDTRInitTypeDef TIM1_BDTRInitStructure;
u16 capture = 0;
u16 CCR1_Val = 0x7FFF ;
u16 CCR2_Val = 0x3FFF ;
u16 CCR3_Val = 0x1FFF ;  
ErrorStatus HSEStartUpStatus;

/* Private function prototypes -----------------------------------------------*/
void RCC_Configuration(void);
void GPIO_Configuration(void);
void NVIC_Configuration(void);
   
/* Private functions ---------------------------------------------------------*/
/*******************************************************************************
* Function Name  : main
* Description    : Main program
* Input          : None
* Output         : None
* Return         : None
*******************************************************************************/
int main(void)
{
#ifdef DEBUG
  debug();
#endif
  /* System Clocks Configuration */
  RCC_Configuration();
  /* GPIO Configuration */
  GPIO_Configuration();
  /* NVIC configuration */
  NVIC_Configuration();
  /* -----------------------------------------------------------------------
  TIM1 Configuration to:
  1/ Generate 3 complementary PWM signals with 3 different duty cycles:
  TIM1CLK = 72 MHz, Prescaler = 0x0, TIM1 counter clock = 72 MHz
  TIM1 frequency = TIM1CLK/(TIM1_Period + 1) = 1.098 KHz
  TIM1 Channel1 duty cycle = TIM1->CCR1 / TIM1_Period = 50%
  TIM1 Channel1N duty cycle = (TIM1_Period - TIM1_CCR1) / (TIM1_Period + 1) = 50%
  TIM1 Channel2 duty cycle = TIM1_CCR2 / TIM1_Period = 25%
  TIM1 Channel2N duty cycle = (TIM1_Period - TIM1_CCR1) / (TIM1_Period + 1) = 75%
  TIM1 Channel3 duty cycle = TIM1_CCR3 / TIM1_Period = 12.5%
  TIM1 Channel3N duty cycle = (TIM1_Period - TIM1_CCR3) / (TIM1_Period + 1) = 87.5%
  2/ Insert a dead time equal to 1.62 us
  3/ Configure the break feature, active at High level, and using the automatic
     output enable feature
  4/ Use the Locking parametres level1.
  ----------------------------------------------------------------------- */
  /* TIM1 Peripheral Configuration */
  TIM_DeInit(TIM1);
  /* Time Base configuration */
  TIM1_TimeBaseStructure.TIM_Prescaler = 0x0;
  TIM1_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
  TIM1_TimeBaseStructure.TIM_Period = 0xFFFF;
  TIM1_TimeBaseStructure.TIM_ClockDivision = 0x0;
  TIM1_TimeBaseStructure.TIM_RepetitionCounter = 0x0;
  TIM_TimeBaseInit(TIM1,&TIM1_TimeBaseStructure);
  /* Channel 1, 2,3 and 4 Configuration in PWM mode */
  TIM1_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM2;
  TIM1_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
  TIM1_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Enable;                  
  TIM1_OCInitStructure.TIM_Pulse = CCR2_Val;
  TIM1_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_Low;
  TIM1_OCInitStructure.TIM_OCNPolarity = TIM_OCNPolarity_Low;         
  TIM1_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Set;
  TIM1_OCInitStructure.TIM_OCNIdleState = TIM_OCIdleState_Reset;         
  
  TIM_OC1Init(TIM1,&TIM1_OCInitStructure);
  TIM1_OCInitStructure.TIM_Pulse = CCR2_Val;
  TIM_OC2Init(TIM1,&TIM1_OCInitStructure);
  TIM1_OCInitStructure.TIM_Pulse = CCR3_Val;
  TIM_OC3Init(TIM1,&TIM1_OCInitStructure);
  /* Automatic Output enable, Break, dead time and lock configuration*/
  TIM1_BDTRInitStructure.TIM_OSSRState = TIM_OSSRState_Enable;
  TIM1_BDTRInitStructure.TIM_OSSIState = TIM_OSSIState_Enable;
  TIM1_BDTRInitStructure.TIM_LOCKLevel = TIM_LOCKLevel_1;
  TIM1_BDTRInitStructure.TIM_DeadTime = 0x75;
  TIM1_BDTRInitStructure.TIM_Break = TIM_Break_Enable;
  TIM1_BDTRInitStructure.TIM_BreakPolarity = TIM_BreakPolarity_High;
  TIM1_BDTRInitStructure.TIM_AutomaticOutput = TIM_AutomaticOutput_Enable;
  TIM_BDTRConfig(TIM1,&TIM1_BDTRInitStructure);
  /* TIM1 counter enable */
  TIM_Cmd(TIM1,ENABLE);
  /* Main Output Enable */
  TIM_CtrlPWMOutputs(TIM1,ENABLE);
  
  while(1)
  {
  }   
}
/*******************************************************************************
* Function Name  : RCC_Configuration
* Description    : Configures the different system clocks.
* Input          : None
* Output         : None
* Return         : None
*******************************************************************************/
void RCC_Configuration(void)
{   
  /* RCC system reset(for debug purpose) */
  RCC_DeInit();
  /* Enable HSE */
  RCC_HSEConfig(RCC_HSE_ON);
  /* Wait till HSE is ready */
  HSEStartUpStatus = RCC_WaitForHSEStartUp();
  if(HSEStartUpStatus == SUCCESS)
  {
    /* HCLK = SYSCLK */
    RCC_HCLKConfig(RCC_SYSCLK_Div1);
  
    /* PCLK2 = HCLK */
    RCC_PCLK2Config(RCC_HCLK_Div1);
    /* PCLK1 = HCLK/2 */
    RCC_PCLK1Config(RCC_HCLK_Div2);
    /* Flash 2 wait state */
    FLASH_SetLatency(FLASH_Latency_2);
    /* Enable Prefetch Buffer */
    FLASH_PrefetchBufferCmd(FLASH_PrefetchBuffer_Enable);
    /* PLLCLK = 8MHz * 9 = 72 MHz */
    RCC_PLLConfig(RCC_PLLSource_HSE_Div1, RCC_PLLMul_9);
    /* Enable PLL */
    RCC_PLLCmd(ENABLE);
    /* Wait till PLL is ready */
    while(RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET)
    {
    }
    /* Select PLL as system clock source */
    RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK);
    /* Wait till PLL is used as system clock source */
    while(RCC_GetSYSCLKSource() != 0x08)
    {
    }
  }
  /* TIM1, GPIOA and GPIOB clock enable */
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1 | RCC_APB2Periph_GPIOA |
                         RCC_APB2Periph_GPIOB, ENABLE);
}
/*******************************************************************************
* Function Name  : GPIO_Configuration
* Description    : Configure the TIM1 Pins.
* Input          : None
* Output         : None
* Return         : None
*******************************************************************************/
void GPIO_Configuration(void)
{
  GPIO_InitTypeDef GPIO_InitStructure;
  /* GPIOA Configuration: Channel 1 Output */
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_Init(GPIOA, &GPIO_InitStructure);
}
/*******************************************************************************
* Function Name  : NVIC_Configuration
* Description    : Configure the nested vectored interrupt controller.
* Input          : None
* Output         : None
* Return         : None
*******************************************************************************/
void NVIC_Configuration(void)
{  
#ifdef  VECT_TAB_RAM  
  /* Set the Vector Table base location at 0x20000000 */
  NVIC_SetVectorTable(NVIC_VectTab_RAM, 0x0);
#else  /* VECT_TAB_FLASH  */
  /* Set the Vector Table base location at 0x08000000 */
  NVIC_SetVectorTable(NVIC_VectTab_FLASH, 0x0);   
#endif
}
#ifdef  DEBUG
/*******************************************************************************
* Function Name  : assert_failed
* Description    : Reports the name of the source file and the source line number
*                  where the assert error has occurred.
* Input          : - file: pointer to the source file name
*                  - line: assert error line source number
* Output         : None
* Return         : None
*******************************************************************************/
void assert_failed(u8* file, u32 line)
{
  /* User can add his own implementation to report the file name and line number,
     ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
  while(1)
  {
  }       
}
#endif

yjwpm

你用我下面的代码试试
/**
  ******************************************************************************
  * @file    TIM/TIM1_Synchro/main.c
  * @author  MCD Application Team
  * @version V3.5.0
  * @date    08-April-2011
  * @brief   Main program body
  ******************************************************************************
  * @attention
  *
  * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
  * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
  * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
  * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
  * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
  * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
  *
  * © COPYRIGHT 2011 STMicroelectronics


  ******************************************************************************
  */
/* Includes ------------------------------------------------------------------*/
#include "stm32f10x.h"
/** @addtogroup STM32F10x_StdPeriph_Examples
  * @{
  */
/** @addtogroup TIM_TIM1_Synchro
  * @{
  */
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;
TIM_OCInitTypeDef  TIM_OCInitStructure;
TIM_BDTRInitTypeDef TIM_BDTRInitStructure;
/* Private function prototypes -----------------------------------------------*/
void RCC_Configuration(void);
void GPIO_Configuration(void);
/* Private functions ---------------------------------------------------------*/
/**
  * @brief   Main program
  * @param  None
  * @retval None
  */
int main(void)
{
  /*!< At this stage the microcontroller clock setting is already configured,
       this is done through SystemInit() function which is called from startup
       file (startup_stm32f10x_xx.s) before to branch to application main.
       To reconfigure the default setting of SystemInit() function, refer to
       system_stm32f10x.c file
     */     
      
  /* System Clocks Configuration */
  RCC_Configuration();
  /* GPIO Configuration */
  GPIO_Configuration();
  /* TIM1 and Timers(TIM3 and TIM4) synchronisation in parallel mode -----------
     1/TIM1 is configured as Master Timer:
     - PWM Mode is used
     - The TIM1 Update event is used as Trigger Output
   
     2/TIM3 and TIM4 are slaves for TIM1,
     - PWM Mode is used
     - The ITR0(TIM1) is used as input trigger for both slaves
     - Gated mode is used, so starts and stops of slaves counters
       are controlled by the Master trigger output signal(update event).
  o For Low-density, Medium-density, High-density and Connectivity line devices:
    The TIMxCLK is fixed to 72 MHz, Prescaler = 0 so the TIM1 counter clock is 72 MHz.
    The Master Timer TIM1 is running at:
    TIM1 frequency = TIM1 counter clock / (TIM1_Period + 1) = 281.250 KHz
    and the duty cycle is equal to: TIM1_CCR1/(TIM1_ARR + 1) = 50%
    The TIM3 is running at:
    (TIM1 frequency)/ ((TIM3 period +1)* (Repetition_Counter+1)) = 18.750 KHz and
    a duty cycle equal to TIM3_CCR1/(TIM3_ARR + 1) = 33.3%
    The TIM4 is running at:
    (TIM1 frequency)/ ((TIM4 period +1)* (Repetition_Counter+1)) = 28.125 KHz and
    a duty cycle equal to TIM4_CCR1/(TIM4_ARR + 1) = 50%
  
  o For Low-Density Value line and Medium-Density Value line devices:
    The TIMxCLK is fixed to 24 MHz, Prescaler = 0 so the TIM1 counter clock is 24 MHz.
    TIM1 frequency = 93.75 KHz
    TIM3 frequency = 6.25 KHz
    TIM4 frequency = 9.375 KHz
  --------------------------------------------------------------------------- */
  /* TIM3 Peripheral Configuration ----------------------------------------*/
  /* TIM3 Slave Configuration: PWM1 Mode */
  TIM_TimeBaseStructure.TIM_Period = 2;
  TIM_TimeBaseStructure.TIM_Prescaler = 0;
  TIM_TimeBaseStructure.TIM_ClockDivision = 0;
  TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
  TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure);
  TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
  TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
  TIM_OCInitStructure.TIM_Pulse = 1;
  TIM_OC1Init(TIM3, &TIM_OCInitStructure);
  /* Slave Mode selection: TIM3 */
  TIM_SelectSlaveMode(TIM3, TIM_SlaveMode_Gated);
  TIM_SelectInputTrigger(TIM3, TIM_TS_ITR0);
  
  /* TIM4 Peripheral Configuration ----------------------------------------*/
  /* TIM4 Slave Configuration: PWM1 Mode */
  TIM_TimeBaseStructure.TIM_Period = 1;
  TIM_TimeBaseStructure.TIM_Prescaler = 0;
  TIM_TimeBaseStructure.TIM_ClockDivision = 0;
  TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
  TIM_TimeBaseInit(TIM4, &TIM_TimeBaseStructure);
  TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
  TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
  TIM_OCInitStructure.TIM_Pulse = 1;
  TIM_OC1Init(TIM4, &TIM_OCInitStructure);
  /* Slave Mode selection: TIM4 */
  TIM_SelectSlaveMode(TIM4, TIM_SlaveMode_Gated);
  TIM_SelectInputTrigger(TIM4, TIM_TS_ITR0);
  
  /* TIM1 Peripheral Configuration ----------------------------------------*/
  /* Time Base configuration */
  TIM_TimeBaseStructure.TIM_Prescaler = 0;
  TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
  TIM_TimeBaseStructure.TIM_Period = 255;
  TIM_TimeBaseStructure.TIM_ClockDivision = 0;
  TIM_TimeBaseStructure.TIM_RepetitionCounter = 4;
  TIM_TimeBaseInit(TIM1, &TIM_TimeBaseStructure);
  /* Channel 1 Configuration in PWM mode */
  TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM2;
  TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
  TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Enable;
  TIM_OCInitStructure.TIM_Pulse = 127;
  TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_Low;
  TIM_OCInitStructure.TIM_OCNPolarity = TIM_OCNPolarity_Low;
  TIM_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Set;
  TIM_OCInitStructure.TIM_OCNIdleState = TIM_OCIdleState_Reset;
  TIM_OC1Init(TIM1, &TIM_OCInitStructure);
  /* Automatic Output enable, Break, dead time and lock configuration*/
  TIM_BDTRInitStructure.TIM_OSSRState = TIM_OSSRState_Enable;
  TIM_BDTRInitStructure.TIM_OSSIState = TIM_OSSIState_Enable;
  TIM_BDTRInitStructure.TIM_LOCKLevel = TIM_LOCKLevel_1;
  TIM_BDTRInitStructure.TIM_DeadTime = 5;
  TIM_BDTRInitStructure.TIM_Break = TIM_Break_Disable;
  TIM_BDTRInitStructure.TIM_BreakPolarity = TIM_BreakPolarity_High;
  TIM_BDTRInitStructure.TIM_AutomaticOutput = TIM_AutomaticOutput_Disable;
  TIM_BDTRConfig(TIM1, &TIM_BDTRInitStructure);
  /* Master Mode selection */
  TIM_SelectOutputTrigger(TIM1, TIM_TRGOSource_Update);
  /* Select the Master Slave Mode */
  TIM_SelectMasterSlaveMode(TIM1, TIM_MasterSlaveMode_Enable);
  
  /* TIM1 counter enable */
  TIM_Cmd(TIM1, ENABLE);
  /* TIM enable counter */
  TIM_Cmd(TIM3, ENABLE);
  TIM_Cmd(TIM4, ENABLE);
  /* Main Output Enable */
  TIM_CtrlPWMOutputs(TIM1, ENABLE);
  while (1)
  {}
}
/**
  * @brief  Configures the different system clocks.
  * @param  None
  * @retval None
  */
void RCC_Configuration(void)
{
  /* TIM1, GPIOA and GPIOB clock enable */
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1 | RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOE |
                         RCC_APB2Periph_GPIOC | RCC_APB2Periph_GPIOB | RCC_APB2Periph_AFIO, ENABLE);
  /* TIM3 and TIM4 clock enable */
  RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3 | RCC_APB1Periph_TIM4, ENABLE);
}
/**
  * @brief  Configures TIM1, TIM3 and TIM4 Pins.
  * @param  None
  * @retval None
  */
void GPIO_Configuration(void)
{
  GPIO_InitTypeDef GPIO_InitStructure;
#ifdef STM32F10X_CL
  /* GPIOC Configuration: TIM3 channel1 as alternate function push-pull */
  GPIO_InitStructure.GPIO_Pin =  GPIO_Pin_6;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_Init(GPIOC, &GPIO_InitStructure);
  GPIO_PinRemapConfig(GPIO_FullRemap_TIM3, ENABLE);       
  /* GPIOE Configuration: TIM1 channel1 as alternate function push-pull */
  GPIO_InitStructure.GPIO_Pin =  GPIO_Pin_8;
  GPIO_Init(GPIOE, &GPIO_InitStructure);
  GPIO_PinRemapConfig(GPIO_FullRemap_TIM1, ENABLE);       
#else
  /* GPIOA Configuration: TIM1 Channel1 and TIM3 Channel1 as alternate function push-pull */
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_8;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_Init(GPIOA, &GPIO_InitStructure);
#endif
  /* GPIOB Configuration: TIM4 Channel1 as alternate function push-pull */
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6;
  GPIO_Init(GPIOB, &GPIO_InitStructure);
}
#ifdef  USE_FULL_ASSERT
/**
  * @brief  Reports the name of the source file and the source line number
  *         where the assert_param error has occurred.
  * @param  file: pointer to the source file name
  * @param  line: assert_param error line source number
  * @retval None
  */
void assert_failed(uint8_t* file, uint32_t line)
{
  /* User can add his own implementation to report the file name and line number,
     ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
  while (1)
  {}
}
#endif
/**
  * @}
  */
/**
  * @}
  */
/******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/

青檬

 
怎么会没有呢？？楼上那么多例子

青檬

好好看固件库手册很有用的

xiaodc88

不可能吧，我用TIM1控制无刷电机成功啊，还接了编码器的，找个例程仔细比较下，一定能输出PWM的