stm32读取gy87

#include "BMP180.h" #include "IIC.h" #include "lcd.h" #define OSS 0 // BMP085使用 short ac1,ac2,ac3; unsigned short ac4,ac5,ac6; short b1,b2; short mb,mc,md; long temperature; long pressure; void BMP180_Initial(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); } long BMP180_Read_Temperature(void) { short temp_ut; Single_Write(BMP085_Addr,0xF4,0x2E); Delayms(5); temp_ut = Single_Read(BMP085_Addr,0xF6); temp_ut = (temp_ut<<8)| Single_Read(BMP085_Addr,0xF7); return (long) temp_ut ; } long BMP180_Read_Pressure(void) { long pressure = 0; Single_Write(BMP085_Addr,0xF4,0x34); Delayms(5); pressure = Single_Read(BMP085_Addr,0xF6); pressure = (pressure<<8)| Single_Read(BMP085_Addr,0xF7); pressure &= 0x0000FFFF; return pressure; } long BMP180_Read(void) { long ut; long up; long x1, x2, b5, b6, x3, b3, p; unsigned long b4, b7; ut = BMP180_Read_Temperature(); up = BMP180_Read_Pressure(); 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); LCD_Int(COLUMN1,LINE5,pressure); return pressure; }