第七屆藍橋杯嵌入式程式碼
阿新 • • 發佈：2019-02-08
#include "stm32f10x.h" #include <stdio.h> #include "lcd.h" #include "led.h" #include "i2c.h" typedef struct { u8 show1; u8 cai; u8 usart; u8 c; u8 s; u8 change; u8 qushi; u8 set; u8 wuci; u8 wuci2; }Flag; Flag flag = {1,1,0,0,0,0,3,1,10,10}; u32 TimingDelay = 0; float ADC_Value; float pre_ADC_Value; u32 ADC_Height; u8 ADC_Level; u16 Timeing1s; u16 Timeing200ms; u8 str[20]; u8 low,mid,high; __IO uint8_t RxCounter1; uint8_t RxBuffer1[15]; uint16_t ReadLED = 0xff; void Delay_Ms(u32 nTime); void Lcd_init(void); void Gpio_init(void); u8 Key_scan(void); void key_check(void); void show(void); void Adc_init(void); void Get_ADC(void); void Usart_init(void); void NVIC_Configuration(void); void sendData(void); void Led_turn(uint16_t LED); void Led_OFF(uint16_t LED); //Main Body int main(void) { SysTick_Config(SystemCoreClock/1000); Lcd_init(); Gpio_init(); Adc_init(); i2c_init(); Usart_init(); if(i2cRead(0x20) != 20) { i2cWrite(0x00,30); i2cWrite(0x01,50); i2cWrite(0x02,70); i2cWrite(0x20,20); } low = i2cRead(0x00); mid = i2cRead(0x01); high = i2cRead(0x02); while(1) { key_check(); Get_ADC(); show(); sendData(); } } void show(void) { if(flag.show1 == 1) { LCD_DisplayStringLine(Line0,(unsigned char *)" "); LCD_DisplayStringLine(Line1,(unsigned char *)" Liquid Level "); LCD_DisplayStringLine(Line2,(unsigned char *)" "); ADC_Height = (u32)(ADC_Value * 30.303); sprintf((char *)str," Height: %dcm ",ADC_Height); LCD_DisplayStringLine(Line3,str); LCD_DisplayStringLine(Line4,(unsigned char *)" "); sprintf((char *)str," ADC: %.2fV ",ADC_Value); LCD_DisplayStringLine(Line5,str); LCD_DisplayStringLine(Line6,(unsigned char *)" "); pre_ADC_Value = ADC_Level; if(ADC_Height > high) ADC_Level = 3; if(ADC_Height <= high && ADC_Height > mid) ADC_Level = 2; if(ADC_Height <= mid && ADC_Height > low) ADC_Level = 1; if(ADC_Height <= low) ADC_Level = 0; if(ADC_Level != pre_ADC_Value) { flag.change = 1; flag.wuci = 10; } if(ADC_Level < pre_ADC_Value) flag.qushi = 2; if(ADC_Level > pre_ADC_Value) flag.qushi = 1; sprintf((char *)str," Level: %d ",ADC_Level); LCD_DisplayStringLine(Line7,str); LCD_DisplayStringLine(Line8,(unsigned char *)" "); LCD_DisplayStringLine(Line9,(unsigned char *)" "); } else { LCD_DisplayStringLine(Line0,(unsigned char *)" "); LCD_DisplayStringLine(Line1,(unsigned char *)" Parameter Setup "); LCD_DisplayStringLine(Line2,(unsigned char *)" "); if(flag.set == 1) LCD_SetTextColor(Red); sprintf((char *)str," Threshold 1: %dcm ",low); LCD_DisplayStringLine(Line3,str); if(flag.set == 1) LCD_SetTextColor(White); LCD_DisplayStringLine(Line4,(unsigned char *)" "); if(flag.set == 2) LCD_SetTextColor(Red); sprintf((char *)str," Threshold 2: %dcm ",mid); LCD_DisplayStringLine(Line5,str); if(flag.set == 2) LCD_SetTextColor(White); LCD_DisplayStringLine(Line6,(unsigned char *)" "); if(flag.set == 3) LCD_SetTextColor(Red); sprintf((char *)str," Threshold 3: %dcm ",high); LCD_DisplayStringLine(Line7,str); if(flag.set == 3) LCD_SetTextColor(White); LCD_DisplayStringLine(Line8,(unsigned char *)" "); LCD_DisplayStringLine(Line9,(unsigned char *)" "); } } void sendData(void) { if(flag.c == 1) { flag.c = 0; USART_ITConfig(USART2, USART_IT_RXNE, DISABLE); printf("C:H%d+L%d\r\n", ADC_Height, ADC_Level); USART_ITConfig(USART2, USART_IT_RXNE, ENABLE); } if(flag.s == 1) { flag.s = 0; USART_ITConfig(USART2, USART_IT_RXNE, DISABLE); printf("S:TL%d+TM%d+TH%d\r\n", low, mid, high); USART_ITConfig(USART2, USART_IT_RXNE, ENABLE); } if(flag.change == 1) { flag.change = 0; USART_ITConfig(USART2, USART_IT_RXNE, DISABLE); if(flag.qushi == 1) printf("A:H%d+L%d+U\r\n", ADC_Height, ADC_Level ); else if(flag.qushi == 2) printf("A:H%d+L%d+D\r\n", ADC_Height, ADC_Level ); flag.qushi = 3; USART_ITConfig(USART2, USART_IT_RXNE, ENABLE); } } int fputc(int ch, FILE *f) { USART_SendData(USART2, (uint8_t) ch); while (USART_GetFlagStatus(USART2, USART_FLAG_TC) == RESET); return ch; } void key_check(void) { u8 Kvalue; Kvalue = Key_scan(); if(Kvalue == 1) { Kvalue = 0; flag.show1 = ~flag.show1; flag.set = 1; } if(Kvalue == 2) { if(flag.show1 != 0) { flag.set++; if(flag.set == 4) flag.set = 1; } Kvalue = 0; } if(Kvalue == 3) { if(flag.show1 != 0) { if(flag.set == 1) { low += 5; if(low == mid) low -= 5; } if(flag.set == 2) { mid += 5; if(mid == high) mid -= 5; } if(flag.set == 3) { high += 5; if(high == 105) low -= 5; } } Kvalue = 0; i2cWrite(0x00,low); i2cWrite(0x01,mid); i2cWrite(0x02,high); } if(Kvalue == 4) { if(flag.show1 != 0) { if(flag.set == 1) { low -= 5; if(low == 0) low += 5; } if(flag.set == 2) { mid -= 5; if(mid == low) mid += 5; } if(flag.set == 3) { high -= 5; if(high == mid) high += 5; } } Kvalue = 0; i2cWrite(0x00,low); i2cWrite(0x01,mid); i2cWrite(0x02,high); } } u8 Key_scan(void) { if(RB1 == 0) { Delay_Ms(5); if(RB1 == 0) { while(!RB1); return 1; } } if(RB2 == 0) { Delay_Ms(5); if(RB2 == 0) { while(!RB2); return 2; } } if(RB3 == 0) { Delay_Ms(5); if(RB3 == 0) { while(!RB3); return 3; } } if(RB4 == 0) { Delay_Ms(5); if(RB4 == 0) { while(!RB4); return 4; } } return 0; } void NVIC_Configuration(void) { NVIC_InitTypeDef NVIC_InitStructure; /* Configure the NVIC Preemption Priority Bits */ NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1); /* Enable the USARTz Interrupt */ NVIC_InitStructure.NVIC_IRQChannel = USART2_IRQn; NVIC_InitStructure.NVIC_IRQChannelSubPriority = 3; NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; NVIC_Init(&NVIC_InitStructure); /******************TIM2定時器中斷********************/ // NVIC_InitStructure.NVIC_IRQChannel = TIM2_IRQn; // NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 3; // NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1; // NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; // // NVIC_Init(&NVIC_InitStructure); } void Usart_init(void) { GPIO_InitTypeDef GPIO_InitStructure; USART_InitTypeDef USART_InitStructure; RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, ENABLE); 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); /* Configure USARTy Rx as input floating */ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3 ; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; GPIO_Init(GPIOA, &GPIO_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); /* Enable USARTz Receive and Transmit interrupts */ USART_ITConfig(USART2, USART_IT_RXNE, ENABLE); //USART_ITConfig(USART2, USART_IT_TXE, ENABLE); //不知道為什麼，如果開了這個，則會導致錯誤 USART_Cmd(USART2, ENABLE); NVIC_Configuration(); } void Get_ADC(void) { if(flag.cai == 1) { ADC_SoftwareStartConvCmd(ADC1, ENABLE); ADC_Value = ADC_GetConversionValue(ADC1) * 3.3 / 0xfff; flag.cai = 0; } } void Adc_init(void) { ADC_InitTypeDef ADC_InitStructure; GPIO_InitTypeDef GPIO_InitStructure; RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, 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 = ENABLE; ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None; ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right; ADC_InitStructure.ADC_NbrOfChannel = 1; ADC_Init(ADC1, &ADC_InitStructure); ADC_RegularChannelConfig(ADC1, ADC_Channel_8, 1, ADC_SampleTime_13Cycles5); ADC_Cmd(ADC1, ENABLE); ADC_ResetCalibration(ADC1); while(ADC_GetResetCalibrationStatus(ADC1)); ADC_StartCalibration(ADC1); while(ADC_GetCalibrationStatus(ADC1)); ADC_SoftwareStartConvCmd(ADC1, ENABLE); } void Gpio_init(void) { GPIO_InitTypeDef GPIO_InitStructure; RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOB | RCC_APB2Periph_GPIOC |RCC_APB2Periph_GPIOD | RCC_APB2Periph_AFIO, ENABLE); /**********************************LED_INIT**********************************/ GPIO_InitStructure.GPIO_Pin = LEDALL; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_2MHz; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; GPIO_Init(GPIOC, &GPIO_InitStructure); GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2; GPIO_Init(GPIOD, &GPIO_InitStructure); Led_OFF(LEDALL); /**********************************KEY_INIT**********************************/ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_8; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_2MHz; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPD; GPIO_Init(GPIOA, &GPIO_InitStructure); GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1 | GPIO_Pin_2; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_2MHz; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPD; GPIO_Init(GPIOB, &GPIO_InitStructure); } void Lcd_init(void) { STM3210B_LCD_Init(); LCD_Clear(Blue); LCD_SetBackColor(Blue); LCD_SetTextColor(White); LCD_DisplayStringLine(Line0,(unsigned char *)" "); LCD_DisplayStringLine(Line1,(unsigned char *)" "); LCD_DisplayStringLine(Line2,(unsigned char *)" "); LCD_DisplayStringLine(Line3,(unsigned char *)" "); LCD_DisplayStringLine(Line4,(unsigned char *)" "); LCD_DisplayStringLine(Line5,(unsigned char *)" "); LCD_DisplayStringLine(Line6,(unsigned char *)" "); LCD_DisplayStringLine(Line7,(unsigned char *)" "); LCD_DisplayStringLine(Line8,(unsigned char *)" "); LCD_DisplayStringLine(Line9,(unsigned char *)" "); } //void tim_init(void) //{ // TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure; // // RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE); // // TIM_TimeBaseStructure.TIM_Period = 1999; // TIM_TimeBaseStructure.TIM_Prescaler = 7199; // TIM_TimeBaseStructure.TIM_ClockDivision = 0; // TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; // // TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure); // // TIM_ITConfig(TIM2, TIM_IT_Update, ENABLE); // // TIM_Cmd(TIM2, ENABLE); //} void Led_turn(uint16_t LED) { GPIOC->ODR = ReadLED; ReadLED ^= LED; GPIOC->ODR = ReadLED; GPIO_SetBits(GPIOD, GPIO_Pin_2); GPIO_ResetBits(GPIOD, GPIO_Pin_2); ReadLED = GPIOC->ODR; } void Led_OFF(uint16_t LED) { GPIOC->ODR = ReadLED; GPIO_SetBits(GPIOC, LED); GPIO_SetBits(GPIOD, GPIO_Pin_2); GPIO_ResetBits(GPIOD, GPIO_Pin_2); ReadLED = GPIOC->ODR; } void Delay_Ms(u32 nTime) { TimingDelay = nTime; while(TimingDelay != 0); } void SysTick_Handler(void) { Timeing1s++; if(Timeing1s == 999) { Timeing1s = 0; flag.cai = 1; Led_turn( LED1); } Timeing200ms++; if(Timeing200ms == 199) { Timeing200ms = 0; if(flag.wuci != 0) { flag.wuci--; Led_turn( LED2); if(flag.wuci == 0) Led_OFF(LED2); } if(flag.wuci2 != 0) { flag.wuci2--; Led_turn( LED3); if(flag.wuci2 == 0) Led_OFF(LED3); } } TimingDelay--; } void USART2_IRQHandler(void) { u8 USART2_RECEIVED; if(USART_GetITStatus(USART2, USART_IT_RXNE) != RESET) { USART2_RECEIVED=USART_ReceiveData(USART2); RxBuffer1[RxCounter1++] = USART2_RECEIVED; } if(USART2_RECEIVED == '\n') { USART_ITConfig(USART2, USART_IT_RXNE, DISABLE); if(RxBuffer1[0] == 'C') { flag.c = 1; flag.wuci2 = 10; } if(RxBuffer1[0] == 'S') { flag.s = 1; flag.wuci2 = 10; } RxCounter1 = 0; //關閉中斷之後，效果會很好，但是一旦時間長了之後，還是會造成錯誤，可能是硬體長期的執行導致的錯誤 USART_ITConfig(USART2, USART_IT_RXNE, ENABLE); } }
#ifndef __Led_H #define __Led_H #define LED1 GPIO_Pin_8 #define LED2 GPIO_Pin_9 #define LED3 GPIO_Pin_10 #define LED4 GPIO_Pin_11 #define LED5 GPIO_Pin_12 #define LED6 GPIO_Pin_13 #define LED7 GPIO_Pin_14 #define LED8 GPIO_Pin_15 #define LEDALL GPIO_Pin_All #define RB1 GPIO_ReadInputDataBit(GPIOA, GPIO_Pin_0) #define RB2 GPIO_ReadInputDataBit(GPIOA, GPIO_Pin_8) #define RB3 GPIO_ReadInputDataBit(GPIOB, GPIO_Pin_1) #define RB4 GPIO_ReadInputDataBit(GPIOB, GPIO_Pin_2) #endif
void i2cWrite(unsigned char add,unsigned char data) { I2CStart(); I2CSendByte(0xa0); I2CSendAck(); I2CSendByte(add); I2CSendAck(); I2CSendByte(data); I2CSendAck(); I2CStop(); Delay_Ms(10); } unsigned char i2cRead(unsigned char add) { unsigned char temp; I2CStart(); I2CSendByte(0xa0); I2CSendAck(); I2CSendByte(add); I2CSendAck(); I2CStart(); I2CSendByte(0xa1); I2CSendAck(); temp = I2CReceiveByte(); I2CStop(); Delay_Ms(10); return temp; }