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/******************** (C) COPYRIGHT 2007 STMicroelectronics ********************
* File Name : main.c
* Author : MCD Application Team
* Version : V1.0
* Date : 10/08/2007
* Description : Main program body
********************************************************************************
* THE PRESENT SOFTWARE 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 SOFTWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING
* INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
*******************************************************************************/
/* Includes ------------------------------------------------------------------*/
#include "stm32f10x_lib.h"
#include "math.h"
#include "stdio.h"
int fputc(int ch,FILE *f);
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
#define ADC1_DR_Address ((u32)0x4001244C)
//ADC1 4001 2400H
//ADC_DR偏移地址 4CH
volatile u16 ADC_Ch0_Res, ADC_Ch1_Res, ADC_Ch2_Res, ADC_Ch3_Res;
volatile u16 ADC_RegularConvertedValueTab[1];
u32 ADC_Calibration_DR;
u32 shownum=0;
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
ADC_InitTypeDef ADC_InitStructure;
DMA_InitTypeDef DMA_InitStructure;
USART_InitTypeDef USART_InitStructure;
USART_ClockInitTypeDef USART_ClockInitStructure;
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
TIM_OCInitTypeDef TIM_OCInitStructure;
ErrorStatus HSEStartUpStatus;
/* Private function prototypes -----------------------------------------------*/
void USART_Configuration(void);
void DMA_Configuration(void);
void ADC_Configuration(void);
void RCC_Configuration(void);
void GPIO_Configuration(void);
void NVIC_Configuration(void);
void TIM1_Configuration(void);
void TIM2_Configuration(void);
void Delay(vu32 nCount);
/* Private functions ---------------------------------------------------------*/
/*******************************************************************************
* Function Name : main
* Description : Main program
* Input : None
* Output : None
* Return : None
*******************************************************************************/
int main(void)
{
// u16 i=0;
// u32 sum=0;
#ifdef DEBUG
debug();
#endif
/* System Clocks Configuration */
RCC_Configuration();
/* NVIC configuration */
NVIC_Configuration();
/* Configure the GPIO ports */
GPIO_Configuration();
/* USART1 configuration ------------------------------------------------------*/
USART_Configuration();
/* DMA Channel1 Configuration ----------------------------------------------*/
DMA_Configuration();
/* ADC1 configuration ------------------------------------------------------*/
ADC_Configuration();
TIM1_Configuration();
TIM2_Configuration();
while(1)
{
}
}
void TIM1_Configuration(void)
{
/* ---------------------------------------------------------------
TIM2 Configuration: Output Compare Inactive Mode:
TIM2CLK = 36 MHz, Prescaler = 35999, TIM2 counter clock = 1 KHz
--------------------------------------------------------------- */
/* Time base configuration */
TIM_TimeBaseStructure.TIM_Period = 300-1; //定時周期
// T = (TIM_Period+1)*(TIM_Prescaler+1)/TIMxCLK
// = (499+1)*(35999+1)/36MHz = 0.5s
TIM_TimeBaseStructure.TIM_Prescaler = 36000-1; //預分頻因子
TIM_TimeBaseStructure.TIM_ClockDivision = 0; //定時器分頻因子
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; //定時器計數模式
TIM_TimeBaseInit(TIM1, &TIM_TimeBaseStructure);
TIM_ARRPreloadConfig(TIM1, ENABLE);//自動裝載寄存器使能
/* TIM IT enable */
TIM_ITConfig(TIM1, TIM_IT_Update, ENABLE);
/* TIM2 enable counter */
TIM_Cmd(TIM1, ENABLE); //計數器控制寄存器TIMx->CR1中的計數器使能位（CEN）
}
void TIM2_Configuration(void)
{
/* ---------------------------------------------------------------
TIM2 Configuration: Output Compare Inactive Mode:
TIM2CLK = 36 MHz, Prescaler = 35999, TIM2 counter clock = 1 KHz
--------------------------------------------------------------- */
/* Time base configuration */
TIM_TimeBaseStructure.TIM_Period = 2; //定時周期
// T = (TIM_Period+1)*(TIM_Prescaler+1)/TIMxCLK
// = (499+1)*(35999+1)/36MHz = 0.5s
TIM_TimeBaseStructure.TIM_Prescaler = 36000-1; //預分頻因子
TIM_TimeBaseStructure.TIM_ClockDivision = 0; //定時器分頻因子
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; //定時器計數模式
TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure);
TIM_ARRPreloadConfig(TIM2, ENABLE);//自動裝載寄存器使能
/* TIM IT enable */
TIM_ITConfig(TIM2, TIM_IT_Update, ENABLE);
/* TIM2 enable counter */
TIM_Cmd(TIM2, ENABLE); //計數器控制寄存器TIMx->CR1中的計數器使能位（CEN）
}
void USART_Configuration(void)
{
/* USART1 configured as follow:
- BaudRate = 38400 baud
- Word Length = 8 Bits
- One Stop Bit
- No parity
- Hardware flow control disabled (RTS and CTS signals)
- Receive and transmit enabled
- USART Clock disabled
- USART CPOL: Clock is active low
- USART CPHA: Data is captured on the second edge
- USART LastBit: The clock pulse of the last data bit is not output to
the SCLK pin
*/
USART_InitStructure.USART_BaudRate = 38400;//設置波特率為38400
USART_InitStructure.USART_WordLength = USART_WordLength_8b;// 8位傳輸
USART_InitStructure.USART_StopBits = USART_StopBits_1; //1個停止位
USART_InitStructure.USART_Parity = USART_Parity_No; //無校驗位
USART_InitStructure.USART_HardwareFlowControl=USART_HardwareFlowControl_None;
USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
USART_Init(USART1, &USART_InitStructure);
// 禁止硬件流控制，禁止RTS和CTS信號
// 允許接收、發送
/*
USART_InitStructure.USART_Clock = USART_Clock_Disable;//串口時鐘禁止
USART_InitStructure.USART_CPOL = USART_CPOL_Low;
USART_InitStructure.USART_CPHA = USART_CPHA_1Edge;
USART_InitStructure.USART_LastBit = USART_LastBit_Disable; */
/* Configure the USART1 配置串口的波特率，校驗位，停止位和時鐘等*/
USART_ClockInitStructure.USART_Clock = USART_Clock_Disable;
USART_ClockInitStructure.USART_CPOL = USART_CPOL_Low;
USART_ClockInitStructure.USART_CPHA = USART_CPHA_1Edge;
USART_ClockInitStructure.USART_LastBit = USART_LastBit_Disable;
USART_ClockInit(USART1 , &USART_ClockInitStructure);
/* Enable USART1 使能串口1*/
USART_Cmd(USART1, ENABLE);
}
void DMA_Configuration(void)
{
DMA_DeInit(DMA1_Channel1);//復位開啟DMA1的第一通道
//DMA對應的外設基地址
DMA_InitStructure.DMA_PeripheralBaseAddr = ADC1_DR_Address;
//序列1轉換結果放在ADC_RegularConvertedValueTab[0],序列2……
DMA_InitStructure.DMA_MemoryBaseAddr = (u32)ADC_RegularConvertedValueTab;
//DMA的轉換模式：SRC模式，從外設向內存中傳送數據
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;
DMA_InitStructure.DMA_BufferSize = 1;
//BufferSize = 4，ADC轉換序列有4個通道
//接收一次數據后，設備地址是否后移
DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
//接收一次數據后，目標內存地址自動后移，用來采集多個數據
DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
//轉換結果的數據大小
DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord;
DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord;
//轉換模式：常用循環緩存模式。Buffer寫滿后，自動回到初始地址開始傳輸
//另外一種Normal模式：不循環，僅一次DMA
DMA_InitStructure.DMA_Mode = DMA_Mode_Circular;
DMA_InitStructure.DMA_Priority = DMA_Priority_High;//DMA優先級，高
DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;//內存到內存模式禁止
DMA_Init(DMA1_Channel1, &DMA_InitStructure);
/* Enable DMA channel1 */
DMA_Cmd(DMA1_Channel1, ENABLE);
}
void ADC_Configuration(void)
{
/* ADC1 configuration ------------------------------------------------------*/
ADC_InitStructure.ADC_Mode = ADC_Mode_Independent;//每個ADC獨立工作
//ADC掃描所有規則轉換通道ADC_SQRx和注入轉換通道ADC_JSQR
ADC_InitStructure.ADC_ScanConvMode = ENABLE;
ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;//連續轉換模式開啟
/*關閉ADC外部觸發，即禁止由外部觸發模數轉換*/
ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;//轉換數據右對齊
ADC_InitStructure.ADC_NbrOfChannel = 1; //開啟4個通道
ADC_Init(ADC1, &ADC_InitStructure); //調用固件庫函數完成初始化
/* ADC1 regular channel configuration */ //采樣周期為239.5個周期
ADC_RegularChannelConfig(ADC1, ADC_Channel_2, 1, ADC_SampleTime_239Cycles5);
//轉換周期不能太短，否則CPU基本一直處于ADC中斷狀態
/* Enable ADC1 DMA */
ADC_DMACmd(ADC1, ENABLE);/* 使能ADC1 DMA*/
/* Enable ADC1 ECO*/ //ADC轉換完成中斷使能
// ADC_ITConfig(ADC1, ADC_IT_EOC, ENABLE);
/* Enable ADC1 */
ADC_Cmd(ADC1, ENABLE);
/* Enable ADC1 reset calibaration register */
ADC_ResetCalibration(ADC1);// ADC1 復位校準
/* Check the end of ADC1 reset calibration register */
while(ADC_GetResetCalibrationStatus(ADC1)); //等待校準寄存器初始化
/* Start ADC1 calibaration */
ADC_StartCalibration(ADC1);//開始校準
/* Check the end of ADC1 calibration */
while(ADC_GetCalibrationStatus(ADC1));//等到校準完成
ADC_Calibration_DR = ADC1->DR;//保存校準碼
/* Start ADC1 Software Conversion */
ADC_SoftwareStartConvCmd(ADC1, ENABLE);//軟件啟動ADC1進行連續轉換
//ADC_ITConfig(ADC1, ADC_IT_EOC, ENABLE);
}
/*******************************************************************************
* 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_HSICmd(ENABLE);
RCC_HSEConfig(RCC_HSE_ON);
// RCC_LSEConfig(RCC_LSE_OFF);
while(RCC_GetFlagStatus(RCC_FLAG_HSIRDY) == RESET);
/* 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);
/* PLLCLK = 8MHz * 9 = 72 MHz */
RCC_PLLConfig(RCC_PLLSource_HSI_Div2, 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)
{
}
}
/* Enable DMA clock */
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE);
/* Enable GPIOA GPIOB USART1 GPIOC and ADC1 clocks */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_USART1
| RCC_APB2Periph_GPIOC | RCC_APB2Periph_ADC1
| RCC_APB2Periph_GPIOB| RCC_APB2Periph_GPIOD
| RCC_APB2Periph_TIM1, ENABLE);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);
RCC_ADCCLKConfig(RCC_PCLK2_Div6);
}
/*******************************************************************************
* 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 USART1 Tx (PA.09) as alternate function push-pull */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_Init(GPIOA, &GPIO_InitStructure);
/* Configure USART1 Rx (PA.10) as input floating */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOA, &GPIO_InitStructure);
/* Configure PA4 PA5 PA6 and PA7
(ADC Channel4 Channel5 Channel6 and Channel7) as analog input */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
GPIO_Init(GPIOA, &GPIO_InitStructure);
/* GPIOA Configuration: Pin8 in Output */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_Init(GPIOB, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_Init(GPIOC, &GPIO_InitStructure);
}
/*******************************************************************************
* Function Name : NVIC_Configuration
* Description : Configures 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 ADC IRQChannel
NVIC_InitStructure.NVIC_IRQChannel = TIM1_UP_IRQChannel;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
NVIC_InitStructure.NVIC_IRQChannel = TIM2_IRQChannel;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
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