【STM32F429开发日志】（0）+示波器

stentor · 发表于 2014-7-10 22:43:43

自己之前做的一个示波器，只用了LCD的底层驱动，没用系统及GUI
将C文件替换到固件包的STM32F429I-Discovery_FW_V1.0.1\Projects\Template下，运行即可
代码贴上看看：
/**
******************************************************************************
* @file ADC_TripleModeInterleaved/main.c
* @author MCD Application Team
* @version V1.0.1
* @date 11-November-2013
* @brief This example provides a short description of how to use the ADC
* peripheral to convert a regular channel in Triple interleaved mode
* using DMA in mode 2 with 8.4Msps .
******************************************************************************
* @attention
*
* © COPYRIGHT 2013 STMicroelectronics

*
* Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
* You may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.st.com/software_license_agreement_liberty_v2
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
******************************************************************************
*/

/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include

/** @addtogroup STM32F429I_DISCOVERY_Examples
* @{
*/

/** @addtogroup ADC_TripleModeInterleaved
* @{
*/

/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
#define MESSAGE1 " Triple ADC Interleaved "
#define MESSAGE1_1 " DMA mode2 example "
#define MESSAGE2 " ADC Ch13 Conv "
#define MESSAGE2_1 " 8.4Msps "
#define MESSAGE3 "Connect voltage "
#define MESSAGE4 "to ADC Ch13 "
#define MESSAGE5 " ADC1 = %d,%d V"
#define MESSAGE6 " ADC2 = %d,%d V"
#define MESSAGE7 " ADC3 = %d,%d V"
#define LINENUM 0x15
#define FONTSIZE Font8x12

uint8_t aTextBuffer[50];
int ADC_Value[4096];
int ADC_ValueSec[4096];
int i=0;
int Zero[8] = {0,0,0,0,0,0,0,0};
int ZeroFlag = 1;

/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
__IO uint32_t uhADCTripleConvertedValue[3];

/* Private function prototypes -----------------------------------------------*/

#ifdef USE_LCD
static void Display_Init(void);
static void Display(void);
void gridon(void);
#endif /* USE_LCD */

void DAC_Ch1_Config(void)
{
GPIO_InitTypeDef GPIO_InitStructure;//
DAC_InitTypeDef DAC_InitStructure;
RCC_APB1PeriphClockCmd(RCC_APB1Periph_DAC, ENABLE); //?? DCA ??

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5; //DAC_OUT1=PA.4
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN; //??? AN ??
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL; //??????
GPIO_Init(GPIOA, &GPIO_InitStructure); // ? ? ? ? ? ?GPIOA

DAC_InitStructure.DAC_Trigger = DAC_Trigger_Software ; //????
DAC_InitStructure.DAC_WaveGeneration = DAC_WaveGeneration_None; //?????
DAC_InitStructure.DAC_LFSRUnmask_TriangleAmplitude= DAC_TriangleAmplitude_2047;//???
DAC_InitStructure.DAC_OutputBuffer = DAC_OutputBuffer_Enable; //????
DAC_Init(DAC_Channel_2, &DAC_InitStructure); // ?????? DAC1
DAC_Cmd(DAC_Channel_2, ENABLE); // ?? DAC1 ??

DAC_SetChannel2Data(DAC_Align_12b_R, 1000); //????? 0
DAC_SoftwareTriggerCmd(DAC_Channel_2, ENABLE); ///??????
}

void DAC1_SET(unsigned int date)
{
DAC_SetChannel2Data(DAC_Align_12b_R, date ); //????
DAC_SoftwareTriggerCmd(DAC_Channel_2, ENABLE); //??????
}
/* Private functions ---------------------------------------------------------*/

/**
* @brief Main program
* @param None
* @retval None
*/

/**
* @brief ADC configuration
* @note This function Configure the ADC peripheral
1) Enable peripheral clocks
2) Configure ADC Channel 13 pin as analog input
3) DMA2_Stream0 channel0 configuration
4) Configure ADC1 Channel 13
5) Configure ADC2 Channel 13
6) Configure ADC3 Channel 13
* @param None
* @retval None
*/
static void GPIO_Configuration(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOC,ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL ;
GPIO_Init(GPIOC, &GPIO_InitStructure);
}

void Gyro_ADC_Configuration(uint8_t ADC_SampleTime_Cycles)
{
    ADC_InitTypeDef ADC_InitStructure;
    ADC_CommonInitTypeDef ADC_CommonInitStructure;
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC2, ENABLE);
/* ADC Common Init **********************************************************/
    ADC_CommonInitStructure.ADC_Mode = ADC_Mode_Independent;
    ADC_CommonInitStructure.ADC_Prescaler = ADC_Prescaler_Div2;
    ADC_CommonInitStructure.ADC_DMAAccessMode = ADC_DMAAccessMode_Disabled;
    ADC_CommonInitStructure.ADC_TwoSamplingDelay = ADC_TwoSamplingDelay_5Cycles;
    ADC_CommonInit(&ADC_CommonInitStructure);

/* ADC2 Init ****************************************************************/
    ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b;
    ADC_InitStructure.ADC_ScanConvMode = ENABLE;
    ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;
    ADC_InitStructure.ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_None;
    ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
    ADC_InitStructure.ADC_NbrOfConversion = 1;
    ADC_Init(ADC2, &ADC_InitStructure);
    ADC_ITConfig(ADC2, ADC_IT_EOC, ENABLE);

ADC_RegularChannelConfig(ADC2, ADC_Channel_13, 1, ADC_SampleTime_Cycles);
/* Enable ADC2 */
    ADC_Cmd(ADC2, ENABLE);
    /* Start ADC2 Software Conversion */
ADC_SoftwareStartConv(ADC2);

}
/* Functions --------------------------------------------------------------------------------*/

void ADC_Config(uint8_t ADC_SampleTime_Cycles)
{
GPIO_Configuration();
Gyro_ADC_Configuration(ADC_SampleTime_Cycles);
}

uint16_t Get_ADC_Data(void)
{
while(!(ADC_GetFlagStatus(ADC2, ADC_FLAG_EOC)==SET));
return(ADC_GetConversionValue(ADC2));
}
#ifdef USE_LCD
/**
* @brief Display ADCs converted values on LCD
* @param None
* @retval None
*/
static void Display(void)
{
int delay = 20000,a=1000000000;
int i=0,j=0;

float ff = 150*4096/255;

int tmpMax,tmpMin,cha,div,tmpMaxNum,tmpMinNum,offset,trigger,triggerflag = 0,temp1 = 0,temp2 = 0;
int temp1flag = 0,temp2flag = 0;
float Vpp;

for(i=0;i