TOY0058 Datasheet TOY0058 | P7-P9

ac6 = bmp180ReadDate(0xB4);

b1 = bmp180ReadDate(0xB6);

b2 = bmp180ReadDate(0xB8);

mb = bmp180ReadDate(0xBA);

mc = bmp180ReadDate(0xBC);

md = bmp180ReadDate(0xBE);

}

/***BMP180 temperature Calculate***/

short bmp180GetTemperature(unsigned int ut)

{

long x1, x2;

x1 = (((long)ut - (long)ac6)*(long)ac5) >> 15; //x1=((ut-ac6)*ac5)/(2^15)

x2 = ((long)mc << 11)/(x1 + md); //x2=(mc*2^11)/(x1+md)

b5 = x1 + x2; //b5=x1+x2

return ((b5 + 8)>>4); //t=(b5+8)/(2^4)

}

/***BMP180 pressure Calculate***/

long bmp180GetPressure(unsigned long up)

{

long x1, x2, x3, b3, b6, p;

unsigned long b4, b7;

b6 = b5 - 4000;

x1 = (b2 * (b6 * b6)>>12)>>11;

x2 = (ac2 * b6)>>11;

x3 = x1 + x2;

b3 = (((((long)ac1)*4 + x3)<<OSS) + 2)>>2;

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<<1)/b4;

else

p = (b7/b4)<<1;

x1 = (p>>8) * (p>>8);

x1 = (x1 * 3038)>>16;

x2 = (-7357 * p)>>16;

p += (x1 + x2 + 3791)>>4;

return p;

}

/*** Read 1 bytes from the BMP180 ***/

int bmp180Read(unsigned char address)

{

unsigned char data;

Wire.beginTransmission(BMP180ADD);

Wire.write(address);

Wire.endTransmission();

Wire.requestFrom(BMP180ADD, 1);

while(!Wire.available());

return Wire.read();

}

/*** Read 2 bytes from the BMP180 ***/

int bmp180ReadDate(unsigned char address)

{

unsigned char msb, lsb;

Wire.beginTransmission(BMP180ADD);

Wire.write(address);

Wire.endTransmission();

Wire.requestFrom(BMP180ADD, 2);

while(Wire.available()<2);

msb = Wire.read();

lsb = Wire.read();

return (int) msb<<8 | lsb;

}

/*** read uncompensated temperature value ***/

unsigned int bmp180ReadUT()

{

unsigned int ut;

Wire.beginTransmission(BMP180ADD);

Wire.write(0xF4); // Write 0x2E into Register 0xF4

Wire.write(0x2E); // This requests a temperature read

ing

Wire.endTransmission();

delay(5); // Wait at least 4.5ms

ut = bmp180ReadDate(0xF6); // read MSB from 0xF6 read LSB fro

m (16 bit)

return ut;

}

/*** Read uncompensated pressure value from BMP180 ***/

unsigned long bmp180ReadUP()

{

unsigned char msb, lsb, xlsb;

unsigned long up = 0;

P1-P3 P4-P6 P7-P9 P10-P10

TOY0058

Mfr. #:

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Manufacturer:

DFRobot

Description:

Touch Sensor Development Tools BMP180 Barometer Module

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