问题：下面程序是改自3.2的库中ADC例程中的定时器触发AD的例子，使用TIM8的更新产生TRGO信号来触发ADC的同步转换，ADC的转换部分是没问题的，
现在的问题是不管怎么设置TIM8，ADC总是无法触发（如果触发了会进DMA-CH1中断处理的），也就是TRGO信号没有。如果使用TIM3的话是可以触发的。
但是如果是能了TIM8的更新中断，可以看到是可以进更新中断的，但是为什么这个更新产生的TRGO信号就没有呢，还是下面的配置有问题？谢谢回复。
/**
******************************************************************************
* @file ADC/TIMTrigger_AutoInjection/main.c
* @author MCD Application Team
* @version V3.2.0
* @date 03/01/2010
* @brief Main program body
******************************************************************************
* @copy
*
* 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.
*
* <h2><center> COPYRIGHT 2010 STMicroelectronics</center></h2>
*/
/* Includes ------------------------------------------------------------------*/
#include "stm32f10x.h"
/** @addtogroup STM32F10x_StdPeriph_Examples
* @{
*/
/** @addtogroup ADC_TIMTrigger_AutoInjection
* @{
*/
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
#define ADC1_DR_Address ((uint32_t)0x4001244C)
#define ADC3_DR_Address ((uint32_t)0x40013c4C)
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
ADC_InitTypeDef ADC_InitStructure;
DMA_InitTypeDef DMA_InitStructure;
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
TIM_OCInitTypeDef TIM_OCInitStructure;
__IO uint32_t ADC_RegularConvertedValueTab[7], ADC_InjectedConvertedValueTab[7];
/* Private function prototypes -----------------------------------------------*/
void RCC_Configuration(void);
void GPIO_Configuration(void);
void NVIC_Configuration(void);
/* Private functions ---------------------------------------------------------*/
/**
* @brief Main program
* @param None
* @retval None
*/
int main(void)
{
u32 i=0xffffFff;
/*!< 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();
/* NVIC configuration ------------------------------------------------------*/
NVIC_Configuration();
/* GPIO configuration ------------------------------------------------------*/
GPIO_Configuration();
/* TIM8 configuration ------------------------------------------------------*/
/* Time Base configuration */
TIM_TimeBaseStructInit(&TIM_TimeBaseStructure);
TIM_TimeBaseStructure.TIM_Period = 0xFF;
TIM_TimeBaseStructure.TIM_Prescaler = 0x8;
TIM_TimeBaseStructure.TIM_ClockDivision = 0x0;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInit(TIM8, &TIM_TimeBaseStructure);
/* TIM8 channel1 configuration in PWM mode */
TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
TIM_OCInitStructure.TIM_Pulse = 0x7F;
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_Low;
TIM_OC1Init(TIM8, &TIM_OCInitStructure);
TIM_SelectOutputTrigger(TIM8, TIM_TRGOSource_Update);
TIM_SelectMasterSlaveMode(TIM8, TIM_MasterSlaveMode_Enable);
/* DMA1 Channel1 Configuration ----------------------------------------------*/
DMA_DeInit(DMA1_Channel1);
DMA_InitStructure.DMA_PeripheralBaseAddr = ADC1_DR_Address;
DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)ADC_RegularConvertedValueTab;
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;
DMA_InitStructure.DMA_BufferSize = 7;
DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Word;
DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Word;
DMA_InitStructure.DMA_Mode = DMA_Mode_Circular;//DMA_Mode_Normal;
DMA_InitStructure.DMA_Priority = DMA_Priority_High;
DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
DMA_Init(DMA1_Channel1, &DMA_InitStructure);
/* Enable DMA1 Channel1 Interrupt 传输完成中断 */
DMA_ITConfig(DMA1_Channel1,DMA_IT_TC,ENABLE);
/* Enable DMA1 channel1 */
DMA_Cmd(DMA1_Channel1, ENABLE);
/* ADC1 configuration ------------------------------------------------------*/
ADC_InitStructure.ADC_Mode = ADC_Mode_RegSimult;//ADC_Mode_RegSimult;
ADC_InitStructure.ADC_ScanConvMode = ENABLE;
ADC_InitStructure.ADC_ContinuousConvMode = DISABLE;
ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_Ext_IT11_TIM8_TRGO;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStructure.ADC_NbrOfChannel = 7;
ADC_Init(ADC1, &ADC_InitStructure);
/* ADC1 regular channel14 configuration */
ADC_RegularChannelConfig(ADC1, ADC_Channel_2, 1, ADC_SampleTime_7Cycles5);
ADC_RegularChannelConfig(ADC1, ADC_Channel_2, 2, ADC_SampleTime_7Cycles5);
ADC_RegularChannelConfig(ADC1, ADC_Channel_2, 3, ADC_SampleTime_7Cycles5);
ADC_RegularChannelConfig(ADC1, ADC_Channel_2, 4, ADC_SampleTime_7Cycles5);
ADC_RegularChannelConfig(ADC1, ADC_Channel_2, 5, ADC_SampleTime_7Cycles5);
ADC_RegularChannelConfig(ADC1, ADC_Channel_2, 6, ADC_SampleTime_7Cycles5);
ADC_RegularChannelConfig(ADC1, ADC_Channel_2, 7, ADC_SampleTime_7Cycles5);
ADC_InitStructure.ADC_Mode = ADC_Mode_RegSimult;
ADC_InitStructure.ADC_ScanConvMode = ENABLE;
ADC_InitStructure.ADC_ContinuousConvMode = DISABLE;//;ENABLE DISABLE
ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStructure.ADC_NbrOfChannel = 7;
ADC_Init(ADC2, &ADC_InitStructure);
ADC_RegularChannelConfig(ADC2, ADC_Channel_4, 1, ADC_SampleTime_13Cycles5);
ADC_RegularChannelConfig(ADC2, ADC_Channel_4, 2, ADC_SampleTime_13Cycles5);
ADC_RegularChannelConfig(ADC2, ADC_Channel_4, 3, ADC_SampleTime_13Cycles5);
ADC_RegularChannelConfig(ADC2, ADC_Channel_4, 4, ADC_SampleTime_13Cycles5);
ADC_RegularChannelConfig(ADC2, ADC_Channel_4, 5, ADC_SampleTime_13Cycles5);
ADC_RegularChannelConfig(ADC2, ADC_Channel_4, 6, ADC_SampleTime_13Cycles5);
ADC_RegularChannelConfig(ADC2, ADC_Channel_4, 7, ADC_SampleTime_13Cycles5);
/* Enable ADC2 external trigger conversion */
ADC_ExternalTrigConvCmd(ADC2, ENABLE);
/* Enable ADC1 DMA */
ADC_DMACmd(ADC1, ENABLE);
/* Enable ADC1 external trigger */
ADC_ExternalTrigConvCmd(ADC1, ENABLE);
/* Enable ADC1 */
ADC_Cmd(ADC1, ENABLE);
/* Enable ADC1 reset calibaration register */
ADC_ResetCalibration(ADC1);
/* Check the end of ADC1 reset calibration register */
while(ADC_GetResetCalibrationStatus(ADC1));
/* Start ADC1 calibaration */
ADC_StartCalibration(ADC1);
/* Check the end of ADC1 calibration */
while(ADC_GetCalibrationStatus(ADC1));
/* Enable ADC1 */
ADC_Cmd(ADC2, ENABLE);
/* Enable ADC1 reset calibaration register */
ADC_ResetCalibration(ADC2);
/* Check the end of ADC1 reset calibration register */
while(ADC_GetResetCalibrationStatus(ADC2));
/* Start ADC1 calibaration */
ADC_StartCalibration(ADC2);
/* Check the end of ADC1 calibration */
while(ADC_GetCalibrationStatus(ADC2));
/* TIM8 counter enable */
TIM_Cmd(TIM8, ENABLE);
/* TIM8 main Output Enable */
TIM_CtrlPWMOutputs(TIM8, ENABLE);
while (1)
{
}
}
/**
* @brief Configures the different system clocks.
* @param None
* @retval None
*/
void RCC_Configuration(void)
{
#if defined (STM32F10X_LD_VL) || defined (STM32F10X_MD_VL)
/* ADCCLK = PCLK2/2 */
RCC_ADCCLKConfig(RCC_PCLK2_Div2);
#else
/* ADCCLK = PCLK2/4 */
RCC_ADCCLKConfig(RCC_PCLK2_Div6);
#endif
/* Enable peripheral clocks ------------------------------------------------*/
/* Enable DMA1 clock */
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1|RCC_AHBPeriph_DMA2, ENABLE);
/* Enable GPIOA, GPIOC, ADC1 and TIM1 clock */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOC |RCC_APB2Periph_ADC3|
RCC_APB2Periph_ADC1 |RCC_APB2Periph_ADC2| RCC_APB2Periph_TIM8|RCC_APB2Periph_TIM1, ENABLE);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE);
}
/**
* @brief Configures the different GPIO ports.
* @param None
* @retval None
*/
void GPIO_Configuration(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
/* Configure TIM1_CH1 (PA8) as alternate function push-pull */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_Init(GPIOA, &GPIO_InitStructure);
/* Configure PC.06 as output push-pull */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_Init(GPIOC, &GPIO_InitStructure);
/* Configure PC.01 and PC.04 (ADC Channel11 and Channel14) as analog input */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2 | GPIO_Pin_4;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
GPIO_Init(GPIOA, &GPIO_InitStructure);
}
/**
* @brief Configures NVIC and Vector Table base location.
* @param None
* @retval None
*/
void NVIC_Configuration(void)
{
NVIC_InitTypeDef NVIC_InitStructure;
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);
/* Configure and enable ADC interrupt */
#if defined (STM32F10X_LD_VL) || defined (STM32F10X_MD_VL)
NVIC_InitStructure.NVIC_IRQChannel = ADC1_IRQn;
#else
NVIC_InitStructure.NVIC_IRQChannel = ADC1_2_IRQn;
#endif
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
//-----------------AD1-DMA1ch1----------- Pre:1 Sub:1---//
NVIC_InitStructure.NVIC_IRQChannel = DMA1_Channel1_IRQn; //DMA1CH1传输完成中断 周期跟PWM周期关联,等于2Tpwm 或Tpwm
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1; //0~7
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;//ADcmd;
NVIC_Init(&NVIC_InitStructure);
}
void DMA1_Channel1_IRQHandler(void) //** 进不了中断，貌似AD的问题
{
if(DMA_GetITStatus(DMA1_IT_TC1)!= RESET) //DMA1 CH1 完成中断
{
// ADCSample();
}
/* Clear interrupt */
DMA_ClearITPendingBit(DMA1_IT_TC1);
}
#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) */
/* Infinite loop */
while (1)
{
}
}
#endif
/**
* @}
*/
/**
* @}
*/
/******************* (C) COPYRIGHT 2010 STMicroelectronics *****END OF FILE****/ |
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