【藍橋杯嵌入式】【STM32】11_2016_第七屆_藍橋杯_省賽_電壓測量監控裝置

文章目錄

- 前言
- 設定滴答定時器搶占優先級為0
- 快速碼出LED驅動
- 使用序列槽發送中斷發送資料
- ADC快速配置
- RTC快速配置

前言

代碼量較大，本文隻介紹寫題目時使用的固件庫檔案及其修改。

下載下傳工程檔案：

https://gitee.com/Joseph_Cooper/blue-bridge-embedded

設定滴答定時器搶占優先級為0

快速碼出LED驅動

...\賽點資源資料包_嵌入式_2019\6-STM32固件庫代碼V3.5版\stm32f10x_stdperiph_lib\STM32F10x_StdPeriph_Lib_V3.5.0\Project\STM32F10x_StdPeriph_Examples\GPIO\IOToggle

void LEDCMD(BitAction BitVal)//Bit_RESET Bit_SET
{
	GPIO_WriteBit(GPIOD,GPIO_Pin_2,BitVal);
}

//PD2 PC8~15
void LEDInit(void)
{
	GPIO_InitTypeDef GPIO_InitStructure;
	
	RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC|RCC_APB2Periph_GPIOD, ENABLE);
	GPIO_InitStructure.GPIO_Pin =  GPIO_Pin_2;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
  GPIO_Init(GPIOD, &GPIO_InitStructure);
	
	GPIO_InitStructure.GPIO_Pin =  GPIO_Pin_8|GPIO_Pin_9|GPIO_Pin_10|GPIO_Pin_11|
																	GPIO_Pin_12|GPIO_Pin_13|GPIO_Pin_14|GPIO_Pin_15;
	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
  GPIO_Init(GPIOC, &GPIO_InitStructure);
	
	LEDCMD(Bit_SET);
	GPIO_Write(GPIOC,GPIO_ReadOutputData(GPIOC)| 0xFF00);
	LEDCMD(Bit_RESET);
}

void LEDSetting(u8 Act,uint16_t Val)
{
	LEDCMD(Bit_SET);
	if(Act){
		GPIO_Write(GPIOC,GPIO_ReadOutputData(GPIOC)&Val);
	}else{
		GPIO_Write(GPIOC,GPIO_ReadOutputData(GPIOC)|Val);
	}
	LEDCMD(Bit_RESET);
}

使用序列槽發送中斷發送資料

...\賽點資源資料包_嵌入式_2019\6-STM32固件庫代碼V3.5版\stm32f10x_stdperiph_lib\STM32F10x_StdPeriph_Lib_V3.5.0\Project\STM32F10x_StdPeriph_Examples\USART\Interrupt

/* Private define ------------------------------------------------------------*/
#define TxBufferSize1   (countof(TxBuffer1) - 1)
#define RxBufferSize1   TxBufferSize2

/* Private macro -------------------------------------------------------------*/
#define countof(a)   (sizeof(a) / sizeof(*(a)))

USART_InitTypeDef USART_InitStructure;
uint8_t TxBuffer1[] = "Hello World!\r\n";
uint8_t RxBuffer1[255];
__IO uint8_t TxCounter1 = 0x00;
__IO uint8_t RxCounter1 = 0x00; 
uint8_t NbrOfDataToTransfer1 = TxBufferSize1;
uint8_t NbrOfDataToRead1 = 255;
u8 TxReady = 1;

void USARTInit(void)
{
	GPIO_InitTypeDef GPIO_InitStructure;
	NVIC_InitTypeDef NVIC_InitStructure;
	USART_InitTypeDef USART_InitStructure;

	RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, ENABLE);
	RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);

  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
  GPIO_Init(GPIOA, &GPIO_InitStructure);  
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
  GPIO_Init(GPIOA, &GPIO_InitStructure);
	
	NVIC_InitStructure.NVIC_IRQChannel = USART2_IRQn;
	NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);
	
	USART_InitStructure.USART_BaudRate = 9600;
  USART_InitStructure.USART_WordLength = USART_WordLength_8b;
  USART_InitStructure.USART_StopBits = USART_StopBits_1;
  USART_InitStructure.USART_Parity = USART_Parity_No;
  USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
  USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
	USART_Init(USART2, &USART_InitStructure);
	USART_ITConfig(USART2, USART_IT_RXNE, ENABLE);
  USART_ITConfig(USART2, USART_IT_TXE, DISABLE);
	USART_Cmd(USART2, ENABLE);
	
}

void USART2_IRQHandler(void)
{
  if(USART_GetITStatus(USART2, USART_IT_RXNE) != RESET)
  {
    /* Read one byte from the receive data register */
    RxBuffer1[RxCounter1++] = USART_ReceiveData(USART2);
		
    if(RxCounter1 == NbrOfDataToRead1)
    {
      /* Disable the USARTy Receive interrupt */
      USART_ITConfig(USART2, USART_IT_RXNE, DISABLE);
    }
  }
  
  if(USART_GetITStatus(USART2, USART_IT_TXE) != RESET)
  {   
    /* Write one byte to the transmit data register */
    USART_SendData(USART2, TxBuffer1[TxCounter1++]);

    if(TxCounter1 == NbrOfDataToTransfer1)
    {
      /* Disable the USARTy Transmit interrupt */
      USART_ITConfig(USART2, USART_IT_TXE, DISABLE);
			TxReady = 1;
    }    
  }
}
//序列槽發送中斷發送資料
void USART2_SendString()
{
	while(TxReady == 0);//等待上一次發送完畢
	NbrOfDataToTransfer1 = TxBufferSize1;//更新緩沖區資料長度
	TxCounter1 = 0;//清空發送索引
	TxReady = 0;//清空發送完成标志位
	//一定要在中斷打開之前對變量完成操作
	USART_ITConfig(USART2, USART_IT_TXE, ENABLE);
}

ADC快速配置

...\賽點資源資料包_嵌入式_2019\6-STM32固件庫代碼V3.5版\stm32f10x_stdperiph_lib\STM32F10x_StdPeriph_Lib_V3.5.0\Project\STM32F10x_StdPeriph_Examples\ADC\ADC1_DMA

#include "stm32f10x.h"

__IO uint16_t ADCConvertedValue;


void ADC1Init()
{
	GPIO_InitTypeDef GPIO_InitStructure;
	ADC_InitTypeDef ADC_InitStructure;

  RCC_ADCCLKConfig(RCC_PCLK2_Div6); //改成6分頻
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1 
													| RCC_APB2Periph_GPIOB, ENABLE);
	
	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
  GPIO_Init(GPIOB, &GPIO_InitStructure);
	
	
	ADC_InitStructure.ADC_Mode = ADC_Mode_Independent;
  ADC_InitStructure.ADC_ScanConvMode = DISABLE;
  ADC_InitStructure.ADC_ContinuousConvMode = DISABLE;
  ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None;
  ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
  ADC_InitStructure.ADC_NbrOfChannel = 1;
  ADC_Init(ADC1, &ADC_InitStructure);
	//改成239.5周期
	ADC_RegularChannelConfig(ADC1, ADC_Channel_8, 1, ADC_SampleTime_239Cycles5);

	ADC_Cmd(ADC1, ENABLE);
	ADC_ResetCalibration(ADC1);
  while(ADC_GetResetCalibrationStatus(ADC1));
  ADC_StartCalibration(ADC1);
  while(ADC_GetCalibrationStatus(ADC1));
}

u16 AD_Get()
{
	u16 Temp = 0;
	
	ADC_SoftwareStartConvCmd(ADC1, ENABLE);
	while(!ADC_GetFlagStatus(ADC1,ADC_FLAG_EOC));
	Temp = ADC_GetConversionValue(ADC1);
	ADC_SoftwareStartConvCmd(ADC1, DISABLE);
	
	return Temp;
}

RTC快速配置

...\賽點資源資料包_嵌入式_2019\6-STM32固件庫代碼V3.5版\stm32f10x_stdperiph_lib\STM32F10x_StdPeriph_Lib_V3.5.0\Project\STM32F10x_StdPeriph_Examples\RTC\LSI_Calib

一定要删除固件庫檔案裡的RTC配置的BKP相關代碼！！！

#include "stm32f10x.h"
#include "Stdio.h"
#include "lcd.h"



u8 HH = 23,MM = 59,SS = 55;
u8 Hour = 0, Min = 0, Sec = 0;
u32 Time = 0;
extern u8 Str[];

void RTCInit()
{
	NVIC_InitTypeDef NVIC_InitStructure;

  /* Enable the RTC Interrupt */
  NVIC_InitStructure.NVIC_IRQChannel = RTC_IRQn;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);

	/* Enable PWR and BKP clocks */
  RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR | RCC_APB1Periph_BKP, ENABLE);
  PWR_BackupAccessCmd(ENABLE);

  /* Reset Backup Domain */
  BKP_DeInit();

  /* Enable the LSI OSC */
  RCC_LSICmd(ENABLE);
  /* Wait till LSI is ready */
  while (RCC_GetFlagStatus(RCC_FLAG_LSIRDY) == RESET);
  /* Select the RTC Clock Source */
  RCC_RTCCLKConfig(RCC_RTCCLKSource_LSI);

  /* Enable RTC Clock */
  RCC_RTCCLKCmd(ENABLE);

  /* Wait for RTC registers synchronization */
  RTC_WaitForSynchro();

  /* Wait until last write operation on RTC registers has finished */
  RTC_WaitForLastTask();

  /* Enable the RTC Second */
  RTC_ITConfig(RTC_IT_SEC, ENABLE);

  /* Wait until last write operation on RTC registers has finished */
  RTC_WaitForLastTask();

  /* Set RTC prescaler: set RTC period to 1sec */
  RTC_SetPrescaler(40000);

  /* Wait until last write operation on RTC registers has finished */
  RTC_WaitForLastTask();

  /* To output second signal on Tamper pin, the tamper functionality
       must be disabled (by default this functionality is disabled) */

  /* Enable the RTC Second Output on Tamper Pin */
	
	RTC_SetCounter(HH * 3600 + MM * 60 + SS);//設定RTC時間
	RTC_WaitForLastTask();

}

void RTC_IRQHandler(void)
{
  if (RTC_GetITStatus(RTC_IT_SEC) != RESET)
  {
		Time = RTC_GetCounter();
		RTC_WaitForLastTask();
		if(Time == (23*3600 + 59*60 + 59))
		{
			RTC_SetCounter(0);
			RTC_WaitForLastTask();
		}
		Hour = Time/3600;
		Min = (Time % 3600) / 60;
		Sec = Time % 60;
		sprintf((char *)Str,"%.2d:%.2d:%.2d",Hour,Min,Sec);
		LCD_DisplayStringLine(Line5,Str);
    /* Clear Interrupt pending bit */
    RTC_ClearITPendingBit(RTC_FLAG_SEC);
  }
}

【藍橋杯嵌入式】【STM32】11_2016_第七屆_藍橋杯_省賽_電壓測量監控裝置

文章目錄

前言

設定滴答定時器搶占優先級為0

快速碼出LED驅動

使用序列槽發送中斷發送資料

ADC快速配置

RTC快速配置

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