原固件库中的例子FWLibexamplesTIMOCToggle使用TIM2，无问题。将其中的TIM2改为TIM1，并修改了相应的设置（如下），发现可进中断，但各输出管脚（pin8、9、10、11）一直为低电平，不能翻转，不知何故？请指教。
改为tim1后的main.c
/******************** (C) COPYRIGHT 2008 STMicroelectronics ********************
* File Name : main.c
* Author : MCD Application Team
* Version : V2.0.1
* Date : 06/13/2008
* Description : Main program body
********************************************************************************
* 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.
*******************************************************************************/
/* Includes ------------------------------------------------------------------*/
#include "stm32f10x_lib.h"
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
TIM_OCInitTypeDef TIM_OCInitStructure;
vu16 CCR1_Val = 32768;
vu16 CCR2_Val = 16384;
vu16 CCR3_Val = 8192;
vu16 CCR4_Val = 4096;
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)
{
/* System Clocks Configuration */
RCC_Configuration();
/* NVIC Configuration */
NVIC_Configuration();
/* GPIO Configuration */
GPIO_Configuration();
/* ---------------------------------------------------------------
TIM2 Configuration: Output Compare Toggle Mode:
TIM2CLK = 36 MHz, Prescaler = 0x2, TIM2 counter clock = 12 MHz
CC1 update rate = TIM2 counter clock / CCR1_Val = 366.2 Hz
CC2 update rate = TIM2 counter clock / CCR2_Val = 732.4 Hz
CC3 update rate = TIM2 counter clock / CCR3_Val = 1464.8 Hz
CC4 update rate = TIM2 counter clock / CCR4_Val = 2929.6 Hz
--------------------------------------------------------------- */
/* Time base configuration */
TIM_TimeBaseStructure.TIM_Period = 65535;
TIM_TimeBaseStructure.TIM_Prescaler = 2;
TIM_TimeBaseStructure.TIM_ClockDivision = 0;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInit(TIM1, &TIM_TimeBaseStructure);
/* Output Compare Toggle Mode configuration: Channel1 */
TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_Toggle;
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
TIM_OCInitStructure.TIM_Pulse = CCR1_Val;
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_Low;
TIM_OC1Init(TIM1, &TIM_OCInitStructure);
TIM_OC1PreloadConfig(TIM1, TIM_OCPreload_Disable);
/* Output Compare Toggle Mode configuration: Channel2 */
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
TIM_OCInitStructure.TIM_Pulse = CCR2_Val;
TIM_OC2Init(TIM1, &TIM_OCInitStructure);
TIM_OC2PreloadConfig(TIM1, TIM_OCPreload_Disable);
/* Output Compare Toggle Mode configuration: Channel3 */
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
TIM_OCInitStructure.TIM_Pulse = CCR3_Val;
TIM_OC3Init(TIM1, &TIM_OCInitStructure);
TIM_OC3PreloadConfig(TIM1, TIM_OCPreload_Disable);
/* Output Compare Toggle Mode configuration: Channel4 */
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
TIM_OCInitStructure.TIM_Pulse = CCR4_Val;
TIM_OC4Init(TIM1, &TIM_OCInitStructure);
TIM_OC4PreloadConfig(TIM1, TIM_OCPreload_Disable);
/* TIM enable counter */
TIM_Cmd(TIM1, ENABLE);
//TIM_CtrlPWMOutputs(TIM1, ENABLE);
//TIM_CCxCmd(TIM1, TIM_Channel_3, ENABLE);
//TIM_CCxNCmd(TIM1, TIM_Channel_3, DISABLE);
//TIM_SelectOCxM(TIM1, TIM_Channel_3, TIM_OCMode_Toggle);
/* TIM IT enable */
TIM_ITConfig(TIM1, TIM_IT_CC1 | TIM_IT_CC2 | TIM_IT_CC3 | TIM_IT_CC4, 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)
{
/* Enable Prefetch Buffer */
FLASH_PrefetchBufferCmd(FLASH_PrefetchBuffer_Enable);
/* Flash 2 wait state */
FLASH_SetLatency(FLASH_Latency_2);
/* HCLK = SYSCLK */
RCC_HCLKConfig(RCC_SYSCLK_Div1);
/* PCLK2 = HCLK */
RCC_PCLK2Config(RCC_HCLK_Div1);
/* PCLK1 = HCLK/4 */
RCC_PCLK1Config(RCC_HCLK_Div4);
/* 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)
{}
}
/* TIM2 clock enable */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1, ENABLE);
/* GPIOA clock enable */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
}
/*******************************************************************************
* Function Name : GPIO_Configuration
* Description : Configure the TIM2 Pins.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void GPIO_Configuration(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
/* GPIOA Configuration:TIM2 Channel1, 2, 3 and 4 as alternate function push-pull */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8 | GPIO_Pin_9 | GPIO_Pin_10 | GPIO_Pin_11;
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)
{
NVIC_InitTypeDef NVIC_InitStructure;
#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
/* Enable the TIM2 global Interrupt */
NVIC_InitStructure.NVIC_IRQChannel = TIM1_CC_IRQChannel;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
}
stm32f10x_it.c中的tim1中断处理过程：
void TIM1_CC_IRQHandler(void)
{
/* TIM2_CH1 toggling with frequency = 183.1 Hz */
if (TIM_GetITStatus(TIM1, TIM_IT_CC1) != RESET)
{
TIM_ClearITPendingBit(TIM1, TIM_IT_CC1 );
capture = TIM_GetCapture1(TIM1);
TIM_SetCompare1(TIM1, capture + CCR1_Val );
}
/* TIM2_CH2 toggling with frequency = 366.2 Hz */
if (TIM_GetITStatus(TIM1, TIM_IT_CC2) != RESET)
{
TIM_ClearITPendingBit(TIM1, TIM_IT_CC2);
capture = TIM_GetCapture2(TIM1);
TIM_SetCompare2(TIM1, capture + CCR2_Val);
}
/* TIM2_CH3 toggling with frequency = 732.4 Hz */
if (TIM_GetITStatus(TIM1, TIM_IT_CC3) != RESET)
{
TIM_ClearITPendingBit(TIM1, TIM_IT_CC3);
capture = TIM_GetCapture3(TIM1);
TIM_SetCompare3(TIM1, capture + CCR3_Val);
}
/* TIM2_CH4 toggling with frequency = 1464.8 Hz */
if (TIM_GetITStatus(TIM1, TIM_IT_CC4) != RESET)
{
TIM_ClearITPendingBit(TIM1, TIM_IT_CC4);
capture = TIM_GetCapture4(TIM1);
TIM_SetCompare4(TIM1, capture + CCR4_Val);
}
}
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