- /*******************************************************************************
- HMC5883L + ADXL345 + BMP085 驅動函數
- 注意初始化PB6、PB7接口,配置RCC GPIO NVIC
- *******************************************************************************/
- #include "stm32f10x.h"
- #include "HMC5883L.h"
- #include "printf.h"
- #include <math.h> //Keil library
- #define uchar unsigned char
- #define uint unsigned int
- #define OSS 0 // BMP085使用
- #define HMC5883L_Addr 0x3C //器件地址
- //#define HMC5883L_Addr_read 0x3d //器件地址
- #define ADXL345_Addr 0xA6 //器件地址
- #define BMP085_Addr 0xee //器件地址,寫
- //#define BMP085_Addr_read 0xef //器件地址,讀
- unsigned char BUF[8]; //接收數據緩存區
- char test=0;
- int x,y;
- float angle;
- u8 ge,shi,bai,qian,wan,shiwan; //顯示變量
- int A_X,A_Y,A_Z;
- //***BMP085使用
- short ac1=408;
- short ac2=-72;
- short ac3=-14383;
- unsigned short ac4=32741;
- unsigned short ac5=32757;
- unsigned short ac6=23153;
- short b1=6190;
- short b2=4;
- short mb=32768;
- short mc=-8711;
- short md=2868;
- long temperature;
- long pressure;
- //********
- //************************************++++++++++++++++++++++++++++++++
- /*模擬IIC端口輸出輸入定義*/
- #define SCL_H GPIOB->BSRR = GPIO_Pin_6
- #define SCL_L GPIOB->BRR = GPIO_Pin_6
- #define SDA_H GPIOB->BSRR = GPIO_Pin_7
- #define SDA_L GPIOB->BRR = GPIO_Pin_7
- #define SCL_read GPIOB->IDR & GPIO_Pin_6
- #define SDA_read GPIOB->IDR & GPIO_Pin_7
- void module_init(void)
- {
- I2C_GPIO_Config();
- Init_HMC5883L();
- Init_ADXL345();
- Init_BMP085();
- }
- void conversion(long temp_data)
- {
- shiwan=temp_data/100000+0x30 ;
- temp_data=temp_data%100000; //取余運算
- wan=temp_data/10000+0x30 ;
- temp_data=temp_data%10000; //取余運算
- qian=temp_data/1000+0x30 ;
- temp_data=temp_data%1000; //取余運算
- bai=temp_data/100+0x30 ;
- temp_data=temp_data%100; //取余運算
- shi=temp_data/10+0x30 ;
- temp_data=temp_data%10; //取余運算
- ge=temp_data+0x30;
- }
- /*******************************************************************************
- * Function Name : I2C_GPIO_Config
- * Description : Configration Simulation IIC GPIO
- * Input : None
- * Output : None
- * Return : None
- ****************************************************************************** */
- void I2C_GPIO_Config(void)
- {
- GPIO_InitTypeDef GPIO_InitStructure;
- GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6;
- GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
- GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_OD;
- GPIO_Init(GPIOB, &GPIO_InitStructure);
- GPIO_InitStructure.GPIO_Pin = GPIO_Pin_7;
- GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
- GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_OD;
- GPIO_Init(GPIOB, &GPIO_InitStructure);
- }
- /*******************************************************************************
- * Function Name : I2C_delay
- * Description : Simulation IIC Timing series delay
- * Input : None
- * Output : None
- * Return : None
- ****************************************************************************** */
- void I2C_delay(void)
- {
- u8 i=15; //這里可以優化速度 ,經測試最低到5還能寫入
- while(i)
- {
- i--;
- }
- }
- void delay5ms(void)
- {
-
- int i=5000;
- while(i)
- {
- i--;
- }
- }
- /*******************************************************************************
- * Function Name : I2C_Start
- * Description : Master Start Simulation IIC Communication
- * Input : None
- * Output : None
- * Return : Wheather Start
- ****************************************************************************** */
- bool I2C_Start(void)
- {
- SDA_H;
- SCL_H;
- I2C_delay();
- if(!SDA_read)return FALSE; //SDA線為低電平則總線忙,退出
- SDA_L;
- I2C_delay();
- if(SDA_read) return FALSE; //SDA線為高電平則總線出錯,退出
- SDA_L;
- I2C_delay();
- return TRUE;
- }
- /*******************************************************************************
- * Function Name : I2C_Stop
- * Description : Master Stop Simulation IIC Communication
- * Input : None
- * Output : None
- * Return : None
- ****************************************************************************** */
- void I2C_Stop(void)
- {
- SCL_L;
- I2C_delay();
- SDA_L;
- I2C_delay();
- SCL_H;
- I2C_delay();
- SDA_H;
- I2C_delay();
- }
- /*******************************************************************************
- * Function Name : I2C_Ack
- * Description : Master Send Acknowledge Single
- * Input : None
- * Output : None
- * Return : None
- ****************************************************************************** */
- void I2C_Ack(void)
- {
- SCL_L;
- I2C_delay();
- SDA_L;
- I2C_delay();
- SCL_H;
- I2C_delay();
- SCL_L;
- I2C_delay();
- }
- /*******************************************************************************
- * Function Name : I2C_NoAck
- * Description : Master Send No Acknowledge Single
- * Input : None
- * Output : None
- * Return : None
- ****************************************************************************** */
- void I2C_NoAck(void)
- {
- SCL_L;
- I2C_delay();
- SDA_H;
- I2C_delay();
- SCL_H;
- I2C_delay();
- SCL_L;
- I2C_delay();
- }
- /*******************************************************************************
- * Function Name : I2C_WaitAck
- * Description : Master Reserive Slave Acknowledge Single
- * Input : None
- * Output : None
- * Return : Wheather Reserive Slave Acknowledge Single
- ****************************************************************************** */
- bool I2C_WaitAck(void) //返回為:=1有ACK,=0無ACK
- {
- SCL_L;
- I2C_delay();
- SDA_H;
- I2C_delay();
- SCL_H;
- I2C_delay();
- if(SDA_read)
- {
- SCL_L;
- I2C_delay();
- return FALSE;
- }
- SCL_L;
- I2C_delay();
- return TRUE;
- }
- /*******************************************************************************
- * Function Name : I2C_SendByte
- * Description : Master Send a Byte to Slave
- * Input : Will Send Date
- * Output : None
- * Return : None
- ****************************************************************************** */
- void I2C_SendByte(u8 SendByte) //數據從高位到低位//
- {
- u8 i=8;
- while(i--)
- {
- SCL_L;
- I2C_delay();
- if(SendByte&0x80)
- SDA_H;
- else
- SDA_L;
- SendByte<<=1;
- I2C_delay();
- SCL_H;
- I2C_delay();
- }
- SCL_L;
- }
- /*******************************************************************************
- * Function Name : I2C_RadeByte
- * Description : Master Reserive a Byte From Slave
- * Input : None
- * Output : None
- * Return : Date From Slave
- ****************************************************************************** */
- unsigned char I2C_RadeByte(void) //數據從高位到低位//
- {
- u8 i=8;
- u8 ReceiveByte=0;
- SDA_H;
- while(i--)
- {
- ReceiveByte<<=1;
- SCL_L;
- I2C_delay();
- SCL_H;
- I2C_delay();
- if(SDA_read)
- {
- ReceiveByte|=0x01;
- }
- }
- SCL_L;
- return ReceiveByte;
- }
- //ZRX
- //單字節寫入*******************************************
- bool Single_Write(unsigned char SlaveAddress,unsigned char REG_Address,unsigned char REG_data) //void
- {
- if(!I2C_Start())return FALSE;
- I2C_SendByte(SlaveAddress); //發送設備地址+寫信號//I2C_SendByte(((REG_Address & 0x0700) >>7) | SlaveAddress & 0xFFFE);//設置高起始地址+器件地址
- if(!I2C_WaitAck()){I2C_Stop(); return FALSE;}
- I2C_SendByte(REG_Address ); //設置低起始地址
- I2C_WaitAck();
- I2C_SendByte(REG_data);
- I2C_WaitAck();
- I2C_Stop();
- delay5ms();
- return TRUE;
- }
- //單字節讀取*****************************************
- unsigned char Single_Read(unsigned char SlaveAddress,unsigned char REG_Address)
- { unsigned char REG_data;
- if(!I2C_Start())return FALSE;
- I2C_SendByte(SlaveAddress); //I2C_SendByte(((REG_Address & 0x0700) >>7) | REG_Address & 0xFFFE);//設置高起始地址+器件地址
- if(!I2C_WaitAck()){I2C_Stop();test=1; return FALSE;}
- I2C_SendByte((u8) REG_Address); //設置低起始地址
- I2C_WaitAck();
- I2C_Start();
- I2C_SendByte(SlaveAddress+1);
- I2C_WaitAck();
- REG_data= I2C_RadeByte();
- I2C_NoAck();
- I2C_Stop();
- //return TRUE;
- return REG_data;
- }
- /*
- ********************************************************************************
- ** 函數名稱 : WWDG_Configuration(void)
- ** 函數功能 : 看門狗初始化
- ** 輸 入 : 無
- ** 輸 出 : 無
- ** 返 回 : 無
- ********************************************************************************
- */
- /*void WWDG_Configuration(void)
- {
- RCC_APB1PeriphClockCmd(RCC_APB1Periph_WWDG, ENABLE);
- WWDG_SetPrescaler(WWDG_Prescaler_8); // WWDG clock counter = (PCLK1/4096)/8 = 244 Hz (~4 ms)
- WWDG_SetWindowValue(0x41); // Set Window value to 0x41
- WWDG_Enable(0x50); // Enable WWDG and set counter value to 0x7F, WWDG timeout = ~4 ms * 64 = 262 ms
- WWDG_ClearFlag(); // Clear EWI flag
- WWDG_EnableIT(); // Enable EW interrupt
- }
- */
- void Delay(vu32 nCount)
- {
- for(; nCount != 0; nCount--);
- }
- void Delayms(vu32 m)
- {
- u32 i;
- for(; m != 0; m--)
- for (i=0; i<50000; i++);
- }
- ///*
- //********************************************************************************
- //** 函數名稱 : WWDG_IRQHandler(void)
- //** 函數功能 : 窗口提前喚醒中斷
- //** 輸 入 : 無
- //** 輸 出 : 無
- //** 返 回 : 無
- //********************************************************************************
- //*/
- //
- //void WWDG_IRQHandler(void)
- //{
- // /* Update WWDG counter */
- // WWDG_SetCounter(0x50);
- //
- // /* Clear EWI flag */
- // WWDG_ClearFlag();
- //
- //}
-
- //********************************************************************
- long bmp085ReadTemp(void)
- { short temp_ut;
- Single_Write(BMP085_Addr,0xF4,0x2E);
- Delayms(2); // max time is 4.5ms
- temp_ut = Single_Read(BMP085_Addr,0xF6);
- temp_ut = (temp_ut<<8)| Single_Read(BMP085_Addr,0xF7);
- return (long) temp_ut ;
- }
- //*************************************************************
- long bmp085ReadPressure(void)
- {
- long pressure = 0;
- long mid=0;
- Single_Write(BMP085_Addr,0xF4,0x34);
- Delayms(2); // max time is 4.5ms
- pressure = Single_Read(BMP085_Addr,0xF6);
- pressure = (pressure<<8)| Single_Read(BMP085_Addr,0xF7);
- mid=Single_Read(BMP085_Addr,0xF8);
- pressure=(pressure<<8)| mid;
- // pressure &= 0x0000FFFF;
- return pressure;
- }
- //******************
- void Send_ADXL345_data(int dis_data)
- { float temp ;
- if(dis_data>0x7fff)dis_data-=0xffff;
- if(dis_data<0)
- {
- dis_data=-dis_data;
- USART_SendData(USART1,'-');
- Delayms(2);
- }
- else
- {
- USART_SendData(USART1,'+');
- Delayms(2);
- }
- temp=(float)dis_data*3.9; //計算數據和顯示,查考ADXL345快速入門第4頁
- conversion(temp); //轉換出顯示需要的數據
- // Usart1_SendData(qian);
- // Usart1_SendData('.');
- // Usart1_SendData(bai);
- // USART1_SendData(shi);
- // USART1_SendData(ge);
- // USART1_SendData('g');
- printf(" %u . %u %u %u g \r\n",qian,bai,shi,ge);
- }
- //***************************************
- //*************************************************
- //*****************************************************
- //******************************************************
- void read_hmc5883l(void)
- {
- Single_Write(HMC5883L_Addr,0x00,0x14); //
- Single_Write(HMC5883L_Addr,0x01,0x20); //配置寄存器B,增益比1090counts/gauss
- Single_Write(HMC5883L_Addr,0x02,0x00); //
- Delayms(10);
- BUF[1]=Single_Read(HMC5883L_Addr,0x03);//OUT_X_H_A
- BUF[2]=Single_Read(HMC5883L_Addr,0x04);//OUT_X_L_A
- BUF[3]=Single_Read(HMC5883L_Addr,0x07);//OUT_Y_H_A
- BUF[4]=Single_Read(HMC5883L_Addr,0x08);//OUT_Y_L_A
- x=(BUF[1] << 8) | BUF[2]; //Combine MSB and LSB of X Data output register
- y=(BUF[3] << 8) | BUF[4]; //Combine MSB and LSB of Z Data output register
- if(x>0x7fff) x-=0xffff;
- if(y>0x7fff) y-=0xffff;
- angle= atan2(y,x) * (180 / 3.14159265) + 180; // angle in degrees
- }
- void Send_HMC5883L()
- {
- conversion(angle);
- printf(" HMC5883L angle=%f \r\n",angle);
- // printf(" HMC5883L: %d %d %d \r\n",bai,shi,ge);
- printf(" HMC5883L Over \r\n");
- }
- //****************************************
- void read_ADXL345(void)
- {
- BUF[0]=Single_Read(ADXL345_Addr,0x32);//OUT_X_L_A
- BUF[1]=Single_Read(ADXL345_Addr,0x33);//OUT_X_H_A
- BUF[2]=Single_Read(ADXL345_Addr,0x34);//OUT_Y_L_A
- BUF[3]=Single_Read(ADXL345_Addr,0x35);//OUT_Y_H_A
- BUF[4]=Single_Read(ADXL345_Addr,0x36);//OUT_Z_L_A
- BUF[5]=Single_Read(ADXL345_Addr,0x37);//OUT_Z_H_A
- A_X=(BUF[1]<<8)+BUF[0]; //合成數據
- A_Y=(BUF[3]<<8)+BUF[2]; //合成數據
- A_Z=(BUF[5]<<8)+BUF[4]; //合成數據
- }
- void Send_ADXL345()
- {
- printf(" ADXL345: X=%u Y=%u Z=%u \r\n",A_X,A_Y,A_Z);
- // Send_ADXL345_data(A_X);
- // USART1_SendData('Y');
- // USART1_SendData('=');
- // Send_ADXL345_data(A_Y);
- // USART1_SendData('Z');
- // USART1_SendData('=');
- // Send_ADXL345_data(A_Z);
- printf(" ADXL345 Over \r\n");
- }
- //*****************************************
- void read_BMP085(void)
- {
- long ut;
- long up;
- long x1, x2, b5, b6, x3, b3, p;
- unsigned long b4, b7;
- // ac6=Single_Read(BMP085_Addr,0xB4);
- // ac6=(ac6<<8)|Single_Read(BMP085_Addr_read,0xB5);
- // ac5=Single_Read(BMP085_Addr_read,0xB2);
- // ac5=(ac5<<8)|Single_Read(BMP085_Addr_read,0xB3);
- // ac4=Single_Read(BMP085_Addr_read,0xB0);
- // ac4=(ac4<<8)|Single_Read(BMP085_Addr_read,0xB1);
- // ac3=Single_Read(BMP085_Addr_read,0xAE);
- // ac3=(ac3<<8)|Single_Read(BMP085_Addr_read,0xAF);
- // ac2=Single_Read(BMP085_Addr_read,0xAC);
- // ac2=(ac2<<8)|Single_Read(BMP085_Addr_read,0xAD);
- // ac1=Single_Read(BMP085_Addr_read,0xAA);
- // ac1=(ac1<<8)|Single_Read(BMP085_Addr_read,0xAB);
- ut = bmp085ReadTemp(); // 讀取溫度
- up = bmp085ReadPressure(); // 讀取壓強
- printf(" T=%f P=%f \r\n",ut,up);
- x1 = ((long)ut - ac6) * ac5 >> 15;
- x2 = ((long) mc << 11) / (x1 + md);
- b5 = x1 + x2;
- temperature = (b5 + 8) >> 4;
-
- b6 = b5 - 4000;
- x1 = (b2 * (b6 * b6 >> 12)) >> 11;
- x2 = ac2 * b6 >> 11;
- x3 = x1 + x2;
- b3 = (((long)ac1 * 4 + x3) + 2)/4;
- x1 = ac3 * b6 >> 13;
- x2 = (b1 * (b6 * b6 >> 12)) >> 16;
- x3 = ((x1 + x2) + 2) >> 2;
- b4 = (ac4 * (unsigned long) (x3 + 32768)) >> 15;
- b7 = ((unsigned long) up - b3) * (50000 >> OSS);
- if( b7 < 0x80000000)
- p = (b7 * 2) / b4 ;
- else
- p = (b7 / b4) * 2;
- x1 = (p >> 8) * (p >> 8);
- x1 = (x1 * 3038) >> 16;
- x2 = (-7357 * p) >> 16;
- pressure = p + ((x1 + x2 + 3791) >> 4);
- }
- void Send_BMP085()
- {
- conversion(temperature);
- printf(" temperature=%f \r\n",temperature);
- // printf(" BMP085: T=%u %u . %u Degree \r\n",bai,shi,ge);
- conversion(pressure);
- printf(" pressure=%f KPa \r\n",pressure);
- // printf(" P=%u %u %u . %u %u %u KPa \r\n",shiwan,wan,qian,bai,shi,ge);
- printf(" BMP085 Over \r\n");
- }
- //***************************
- void Init_ADXL345(void)
- {
- Single_Write(ADXL345_Addr,0x31,0x0B); //測量范圍,正負16g,13位模式
- Single_Write(ADXL345_Addr,0x2C,0x0e); //速率設定為100hz 參考pdf13頁
- Single_Write(ADXL345_Addr,0x2D,0x08); //選擇電源模式 參考pdf24頁
- Single_Write(ADXL345_Addr,0x2E,0x80); //使能 DATA_READY 中斷
- // Single_Write(ADXL345_Addr,0x1E,0x00); //X 偏移量 根據測試傳感器的狀態寫入pdf29頁
- // Single_Write(ADXL345_Addr,0x1F,0x00); //Y 偏移量 根據測試傳感器的狀態寫入pdf29頁
- // Single_Write(ADXL345_Addr,0x20,0x05); //Z 偏移量 根據測試傳感器的狀態寫入pdf29頁
- printf(" ADXL345_initial \r\n");
- }
- //****************************
- void Init_BMP085(void)
- {
- ac1 = Single_Read(BMP085_Addr,0xAA);
- ac1 = (ac1<<8)|Single_Read(BMP085_Addr,0xAB);
- ac2 = Single_Read(BMP085_Addr,0xAC);
- ac2 = (ac2<<8)| Single_Read(BMP085_Addr,0xAD);
- ac3 = Single_Read(BMP085_Addr,0xAE);
- ac3 = (ac3<<8)| Single_Read(BMP085_Addr,0xAF);
- ac4 = Single_Read(BMP085_Addr,0xB0);
- ac4 = (ac4<<8)| Single_Read(BMP085_Addr,0xB1);
- ac5 = Single_Read(BMP085_Addr,0xB2);
- ac5 = (ac5<<8)| Single_Read(BMP085_Addr,0xB3);
- ac6 = Single_Read(BMP085_Addr,0xB4);
- ac6 = (ac6<<8)| Single_Read(BMP085_Addr,0xB5);
- b1 = Single_Read(BMP085_Addr,0xB6);
- b1 = (b1<<8)| Single_Read(BMP085_Addr,0xB7);
- b2 = Single_Read(BMP085_Addr,0xB8);
- b2 = (b2<<8)| Single_Read(BMP085_Addr,0xB9);
- mb = Single_Read(BMP085_Addr,0xBA);
- mb = (mb<<8)| Single_Read(BMP085_Addr,0xBB);
- mc = Single_Read(BMP085_Addr,0xBC);
- mc = (mc<<8)| Single_Read(BMP085_Addr,0xBD);
- md = Single_Read(BMP085_Addr,0xBE);
- md = (md<<8)| Single_Read(BMP085_Addr,0xBF);
- printf(" BMP085_initial \r\n");
- }
- //****************************
- void Init_HMC5883L(void)
- {
- Single_Write(HMC5883L_Addr,0x00,0x14); //配置寄存器A,速率30Hz
- Single_Write(HMC5883L_Addr,0x01,0x20); //配置寄存器B,增益比1090counts/gauss
- Single_Write(HMC5883L_Addr,0x02,0x00); //連續測量模式
- printf(" HMC5883L_initial \r\n");
- }
- //int main(void)
- //{
- // RCC_Configuration();
- // GPIO_Configuration();
- // USART1_Configuration();
- // I2C_GPIO_Config();
- //
- // Init_HMC5883L();
- // Init_ADXL345();
- // Init_BMP085();
- //
- // while(1)
- // {
- // read_hmc5883l();
- // Send_HMC5883L();
- // read_ADXL345();
- // Send_ADXL345();
- // read_BMP085();
- // Send_BMP085();
- // Delayms(300);
- // }
- //}
復制代碼
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