基于bmp085气压传感器制作的大气压强、温度、海拔高度测量仪(含详细源代码)

前一段时间看到一网店居然有大气压强传感器销售，赶紧搞了一块回来试试，花了两天的时间终于把它搞定了，其中部分代码借鉴和一网友的的代码。废话不多说先上传测量效果照另外本项目的源代码是模块编程，源代码便于阅读，便于移植，也是一个不错的模块化编程例程，如果对这些代码有任何意见或者建议的都可以提出来，谢谢源代码：/*项目名称：BMP085模块硬件功能测试目地：BMP085模块硬件功能测试模块：基本组件，12864驱动，显示驱动，iic驱动，bmp085驱动功能：v0.0读取eeprom里面11个数据，并且读取大气压的值以2进制形式显示出来v0.1读取出当前气压值、气温、海拔高度，并且显示出来硬件要求：主控芯片:STC89c52测试电路板普中科技51开发板晶振：12.000mhz作者日期备注熊梦杰2012/08/31新增熊孟杰2012/09/01修改*/#includeconfig.hvoid main()LCD_Init();DisplayLoading();Init_BMP085();for(;)Show_BMP085_Result();/*此头文件直接包含全部基本组件，便于管理、调用*/#ifndef _CONFIG_H#define _CONFIG_H#include #include #include #include LCD12864drive.h#include displaydrive.h#include components.h#include i2cdrive.h#include bmp085drive.h/typedef unsigned char uchar;/typedef unsigned int uint;#endif/*文件名：BMP085driver.c函数功能：BMP085的基本操作函数备 注：控制流程：初始化（直接读取内部11位eeprom数据） （1）获取大气压强未补偿数据（发送控制指令-读取数据） （2）获取当前气温值（发送控制指令-读取数据）（3）获取海拔高度值（根据（2）（3）两步得到的数据计算出结果）（4） 获取海拔高度平均值（将（4）得到的数据分别放到10位数组中计算出平均值，由于采用了1进1出的计算方式，因此该数据具有较好的实时性及线性效果（5）显示结果（通过lcd12864显示测量结果）（6）重复执行步骤（2）（3）（4）（5）（6）*/#include config.h/定义传感器内部EEPROM存储单元里面11个值int idata AC1,AC2,AC3,B1,B2,MC,MD;unsigned int idata AC4,AC5,AC6;unsigned char idata AltitudeTempFlag; /计算海拔高度使用到的数据标志int idata AltitudeTemp10=0,0,0,0,0,0,0,0,0,0; /海拔高度的10个临时值，取平均值unsigned char code PressureTitle16=气压温度测量;unsigned char idata ShowPressure16=气压: pa;unsigned char idata ShowTemperature16=温度: . ;unsigned char idata ShowAltitude16=海拔: . 米;/*函数名称：BMP085_Read_2Byte函数功能：从BMP085读出2字节数据入口参数：add /寄存器地址出口参数：读取的数据备 注：*/int BMP085_Read_2Byte(uchar add)uchar msb, lsb;int dat; Start_I2c(); /起始信号 Send_Byte(BMP085_ADDWR); /发送设备地址+写信号if(ack=0) return(0); Send_Byte(add); /发送存储单元地址if(ack=0) return(0);Start_I2c(); /重复起始信号 Send_Byte(BMP085_ADDWR+1); /发送设备地址+读信号if(ack=0) return(0); msb = RcvByte(); Ack_I2c(0); /主机发送应答信号 lsb = RcvByte();Ack_I2c(1); /主机收到最后一张字节数据后发送非应答信号 Stop_I2c(); /停止信号 DelayMs(5); dat = msb 15; /根据芯片手册提供的公式计算补偿后的温度值X2 = (long) MC 4;if(choice=0)return (long)temperature;/返回温度值,0.1B6 = B5 - 4000; /根据芯片手册提供的公式计算补偿后的气压值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);if( B7 8) * (p 8);X1 = (X1 * 3038) 16;X2 = (-7357 * p) 16;pressure = p + (X1 + X2 + 3791) 4);return (long)pressure; /返回气压值，Pa/*函数名称：BMP085_Get_Altitude函数功能：获取海拔高度值入口参数：无出口参数：altitude /int型 2字节，当前海拔高度值备 注： 返回的高度值单位为厘米，调用时再换算成带小数的以米为单位的高度值*/int BMP085_Get_Altitude()float pressure;float altitude;pressure=(float)BMP085_Get_Param(1);/获取气压值altitude=44330*(1-pow(pressure/101325,1/5.255); /根据芯片手册提供的公式计算海拔高度altitude*=100; /转换成厘米单位的高度值，调用时再换算成带小数的高度值，提高精度return (int)altitude;/*函数名称：ConvPressure()函数功能：转换气压入口参数：无出口参数：无备 注：将得到数据转化成lcd的数据，便于显示*/void ConvPressure()long Pressure;Pressure=BMP085_Get_Param(1);if(Pressure=0) ShowPressure5=+;else /如果海拔高度是一个负数，要先取反ShowPressure5=-;Pressure=Pressure;ShowPressure6=Pressure/1000000+0x30;ShowPressure7=Pressure%1000000/100000+0x30;ShowPressure8=Pressure%100000/10000+0x30;ShowPressure9=Pressure%10000/1000+0x30;ShowPressure11=Pressure%1000/100+0x30;ShowPressure12=Pressure%100/10+0x30;ShowPressure13=Pressure%10+0x30;/*函数名称：ConvTemperature()函数功能：转换气温入口参数：无出口参数：无备 注：将得到数据转化成lcd的数据，便于显示*/void ConvTemperature()int Temperature;Temperature=(int)BMP085_Get_Param(0);if(Temperature=0) ShowTemperature6=+;else /如果海拔高度是一个负数，要先取反ShowTemperature6=-;Temperature=Temperature;ShowTemperature8=Temperature/10000+0x30;ShowTemperature9=Temperature%10000/1000+0x30;ShowTemperature10=Temperature%1000/100+0x30;ShowTemperature11=Temperature%100/10+0x30;ShowTemperature13=Temperature%10+0x30;/*函数名称：ConvAltitude()函数功能：转换海拔高度入口参数：无出口参数：无备 注：将得到数据转化成lcd的数据，便于显示*/void ConvAltitude()long Altitude;/海拔高度unsigned char Tempnum;/临时值Altitude=BMP085_Get_Altitude();if(Altitude=0) ShowAltitude6=+;else /如果海拔高度是一个负数，要先取反ShowAltitude6=-;Altitude=Altitude;/*取10次测量值的平均值作为测量结果，此算法存在记忆效果*/AltitudeTempFlag+;/标志自加if(AltitudeTempFlag=10) AltitudeTempFlag=0;AltitudeTempAltitudeTempFlag=Altitude;/根据标志保存数据到数组for(Tempnum=0;Tempnum0;c-)/ for(b=170;b0;b-)/ for(a=31;a0;a-);/void DelayMs(unsigned int ms) /stc89c52 12.000mhz 误差 -0.651041666667us unsigned int a,b;for(b=4*ms;b0;b-)for(a=113;a0;a-);/*功能：多个任务之间相互交换输入：微秒延时的数值输出：无*/void Delay2Us(unsigned int us) /stc12c5a60s2 22.1184mhz/ unsigned int a;/ for(a=8*us;a0;a-);/void Delay8Us(unsigned int us) /stc89c52 12.000mhz unsigned char a; for(a=us;a0;a-); _nop_(); /if Keil,require use intrins.h/*文件名：components.h系统组件程序功能说明：包含了常用的基本函数以及基本的输入输出接口使用层次：底层系统组件*/*编译预处理*/#ifndef _COMPONENTS_H#define _COMPONENTS_H/*基本输入输出接口*/sbit KEY0=P15;/*全局变量声明*/*外部函数声明*/extern void DelayMs(unsigned int ms);/仅仅适用于stc12c5a60s2 22.1184mhz晶振extern void Delay8Us(unsigned int us);/仅仅适用于stc12c5a60s2 22.1184mhz晶振#endif/*显示驱动文件*/#include config.hunsigned char code 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