/* Includes ------------------------------------------------------------------*/
#include "stm32f10x_lib.h"
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
#define ADC1_DR_Address ((u32)0x4001244C)
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
ADC_InitTypeDef ADC_InitStructure;
DMA_InitTypeDef DMA_InitStructure;
TIM1_TimeBaseInitTypeDef TIM1_TimeBaseStructure;
TIM1_OCInitTypeDef TIM1_OCInitStructure;
TIM1_BDTRInitTypeDef TIM1_BDTRInitStructure;
u32 ADC_RegularConvertedValueTab;
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();
/* NVIC configuration ------------------------------------------------------*/
NVIC_Configuration();
/* GPIO configuration ------------------------------------------------------*/
GPIO_Configuration();
/* TIM1 configuration ------------------------------------------------------*/
TIM1_DeInit();
/* Time Base configuration */
TIM1_TimeBaseStructure.TIM1_Prescaler = 0x4;
TIM1_TimeBaseStructure.TIM1_CounterMode = TIM1_CounterMode_Up;
TIM1_TimeBaseStructure.TIM1_Period = 0xFF;
TIM1_TimeBaseStructure.TIM1_ClockDivision = 0x0;
TIM1_TimeBaseStructure.TIM1_RepetitionCounter = 0x0;
TIM1_TimeBaseInit(&TIM1_TimeBaseStructure);
/*OC1 configuration */
TIM1_OCInitStructure.TIM1_OCMode = TIM1_OCMode_Toggle;
TIM1_OCInitStructure.TIM1_OutputState = TIM1_OutputState_Enable;
TIM1_OCInitStructure.TIM1_OutputNState = TIM1_OutputNState_Enable;
TIM1_OCInitStructure.TIM1_Pulse = 0;
TIM1_OCInitStructure.TIM1_OCPolarity = TIM1_OCPolarity_Low;
TIM1_OCInitStructure.TIM1_OCNPolarity = TIM1_OCNPolarity_High;
TIM1_OCInitStructure.TIM1_OCIdleState = TIM1_OCIdleState_Set;
TIM1_OCInitStructure.TIM1_OCNIdleState = TIM1_OCIdleState_Reset;
TIM1_OC1Init(&TIM1_OCInitStructure);
/* Automatic Output enable, Break, dead time and lock configuration*/
TIM1_BDTRInitStructure.TIM1_OSSRState = TIM1_OSSRState_Enable;
TIM1_BDTRInitStructure.TIM1_OSSIState = TIM1_OSSIState_Enable;
TIM1_BDTRInitStructure.TIM1_LOCKLevel = TIM1_LOCKLevel_OFF;
TIM1_BDTRInitStructure.TIM1_DeadTime = 0x01;
TIM1_BDTRInitStructure.TIM1_Break = TIM1_Break_Enable;
TIM1_BDTRInitStructure.TIM1_BreakPolarity = TIM1_BreakPolarity_High;
TIM1_BDTRInitStructure.TIM1_AutomaticOutput = TIM1_AutomaticOutput_Enable;
TIM1_BDTRConfig(&TIM1_BDTRInitStructure);
/* DMA Channel1 Configuration ----------------------------------------------*/
DMA_DeInit(DMA_Channel1);
DMA_InitStructure.DMA_PeripheralBaseAddr = ADC1_DR_Address;
DMA_InitStructure.DMA_MemoryBaseAddr = (u32)&ADC_RegularConvertedValueTab;
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;
DMA_InitStructure.DMA_BufferSize = 32;
DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord;
DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord;
DMA_InitStructure.DMA_Mode = DMA_Mode_Normal;
DMA_InitStructure.DMA_Priority = DMA_Priority_High;
DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
DMA_Init(DMA_Channel1, &DMA_InitStructure);
/* Enable DMA channel1 */
DMA_Cmd(DMA_Channel1, ENABLE);
/* ADC1 configuration ------------------------------------------------------*/
ADC_InitStructure.ADC_Mode = ADC_Mode_Independent;
ADC_InitStructure.ADC_ScanConvMode = DISABLE;
ADC_InitStructure.ADC_ContinuousConvMode = DISABLE;
ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_T1_CC1;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStructure.ADC_NbrOfChannel = 1;
ADC_Init(ADC1, &ADC_InitStructure);
/* ADC1 regular channel14 configuration */
ADC_RegularChannelConfig(ADC1, ADC_Channel_14, 1, ADC_SampleTime_13Cycles5);
/* Enable ADC1 DMA */
ADC_DMACmd(ADC1, ENABLE);
/* Enable ADC1 external trigger */
ADC_ExternalTrigConvCmd(ADC1, ENABLE);
/* Enable ADC1 */
ADC_Cmd(ADC1, ENABLE);
/* TIM1 counter enable */
TIM1_Cmd(ENABLE);
/* Test on channel1 transfer complete flag */
while(!DMA_GetFlagStatus(DMA_FLAG_TC1));
/* Clear channel1 transfer complete flag */
DMA_ClearFlag(DMA_FLAG_TC1);
/* TIM1 counter disable */
TIM1_Cmd(DISABLE);
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/2 */
RCC_PCLK1Config(RCC_HCLK_Div2);
/* ADCCLK = PCLK2/4 */
RCC_ADCCLKConfig(RCC_PCLK2_Div4);
/* PLLCLK = 8MHz * 7 = 56 MHz */
RCC_PLLConfig(RCC_PLLSource_HSE_Div1, RCC_PLLMul_7);
/* 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)
{
}
}
/* Enable peripheral clocks --------------------------------------------------*/
/* Enable DMA clock */
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA, ENABLE);
/* Enable GPIOA, GPIOC, ADC1 and TIM1 clock */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOC |
RCC_APB2Periph_ADC1 | RCC_APB2Periph_TIM1, ENABLE);
}
/*******************************************************************************
* Function Name : GPIO_Configuration
* Description : Configures the different GPIO ports.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void GPIO_Configuration(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
/* Configure PC.01 and PC.04 (ADC Channel11 and Channel14) as analog input */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
GPIO_Init(GPIOC, &GPIO_InitStructure);
}
/*******************************************************************************
* Function Name : NVIC_Configuration
* Description : Configures NVIC and Vector Table base location.
* 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
}
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