MAIN.C Dosya içeriği:
/* Includes ------------------------------------------------------------------*/
#include "stm32f0xx.h"
#include "stm32f0xx_adc.h"
#include "stm32f0xx_gpio.h"
#include "stm32f0xx_rcc.h"
#include "stm32f0xx_tim.h"
__IO uint16_t ADC1ConvertedValue = 0, ADC1ConvertedVoltage = 0;
/* Private function prototypes -----------------------------------------------*/
void ButtonInit(void);
void ADC1_Config(void);
void ADC_read(void)
{
/* User button configuration */
ButtonInit();
/* Configure ADC1 Channel 11 */
ADC1_Config();
/* Infinite loop */
while (1)
{
/* Press User button to get the converted data */
while(GPIO_ReadInputDataBit(GPIOA, GPIO_Pin_0) == RESET);
/* Get ADC1 converted data */
ADC1ConvertedValue = ADC_GetConversionValue(ADC1);
/* Compute the voltage */
ADC1ConvertedVoltage = (ADC1ConvertedValue * 3300)/0xFFF;
}
}
void ButtonInit(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
/* Enable the BUTTON Clock */
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA, ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG, ENABLE);
/* Configure Button pin as input */
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;
GPIO_Init(GPIOA, &GPIO_InitStructure);
}
void ADC1_Config(void)
{
ADC_InitTypeDef ADC_InitStructure;
GPIO_InitTypeDef GPIO_InitStructure;
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
TIM_OCInitTypeDef TIM_OCInitStructure;
/* GPIOC Periph clock enable */
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOC, ENABLE);
/* ADC1 Periph clock enable */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE);
/* TIM3 Periph clock enable */
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE);
/* Configure ADC Channel11 as analog input */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1 ;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL ;
GPIO_Init(GPIOC, &GPIO_InitStructure);
/* TIM3 Configuration *******************************************************/
TIM_DeInit(TIM3);
TIM_TimeBaseStructInit(&TIM_TimeBaseStructure);
TIM_OCStructInit(&TIM_OCInitStructure);
/* Time base configuration */
TIM_TimeBaseStructure.TIM_Period = 0xFF;
TIM_TimeBaseStructure.TIM_Prescaler = 0x0;
TIM_TimeBaseStructure.TIM_ClockDivision = 0x0;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure);
/* TIM3 TRGO selection */
TIM_SelectOutputTrigger(TIM3, TIM_TRGOSource_Update);
/* ADC1 Configuration *******************************************************/
/* ADCs DeInit */
ADC_DeInit(ADC1);
/* Configure the ADC1 in continous mode withe a resolutuion equal to 12 bits*/
ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b;
ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;
ADC_InitStructure.ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_Rising;
ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_T3_TRGO;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStructure.ADC_ScanDirection = ADC_ScanDirection_Upward;
ADC_Init(ADC1, &ADC_InitStructure);
/* Convert the ADC1 Channel 11 with 239.5 Cycles as sampling time */
ADC_ChannelConfig(ADC1, ADC_Channel_11 , ADC_SampleTime_28_5Cycles);
/* ADC Calibration */
ADC_GetCalibrationFactor(ADC1);
/* Enable the auto delay feature */
ADC_WaitModeCmd(ADC1, ENABLE);
/* Enable the Auto power off mode */
ADC_AutoPowerOffCmd(ADC1, ENABLE);
/* Enable ADCperipheral[PerIdx] */
ADC_Cmd(ADC1, ENABLE);
/* Wait the ADCEN falg */
while(!ADC_GetFlagStatus(ADC1, ADC_FLAG_ADEN));
/* TIM2 enable counter */
TIM_Cmd(TIM3, ENABLE);
/* ADC1 regular Software Start Conv */
ADC_StartOfConversion(ADC1);
}
int main(void)
{
ADC_read();
while(1){
}
}
