File content as of revision 0:2fdc6095d7b4:

#include "mbed.h"

DigitalOut myled(LED1);

// http://sensing.honeywell.com/index.cfm/ci_id/157750/la_id/1/document/1/re_id/0
// http://sensing.honeywell.com/index.cfm/ci_id/156988/la_id/1/document/1/re_id/0

#define HSC_2A 0x28

int main() {

// BMP085 bmp085(p28, p27); //bmp085(p9, p10); // sda, scl

    printf("\rhsc\n\r");

    I2C i2c(p28, p27);
    
    int id = HSC_2A;

    i2c.frequency(100000); // 100k - 400k

    while(1) {

#if 0    
        i2c.start();
        i2c.write((id<<1) | 1);
        int b1 = i2c.read(1);
        int b2 = i2c.read(1);
        int t1 = i2c.read(1);
        int t2 = i2c.read(0);
        i2c.stop();
        printf("%02X %02X  %02X %02X\n\r", b1, b2, t1, t2);
#else
        unsigned char data[4];
        i2c.read((id<<1)|1, (char*)data, sizeof(data));
        //printf("%02X %02X  %02X %02X\n\r", data[0], data[1], data[2], data[3]);
        int st = data[0]>>6; // status
        int bd = ((data[0] & 0x3f) << 8) | data[1]; // bridge data
        int td = ((data[2]<<8) | data[3]) >> 5; // temp data
        
        float p = ((float)bd-1638)*(15-0)/(14745-1638)-0; // convert to psi
        p = p * 68.9475729; // psi to hPa
        
        float t = (((float)td*200)/2047)-50; // convert to deg C
        printf("%d: %.2f hPa  %.2f C\n\r", st, p, t);
        
        wait(1);
#endif    

        myled = 1;
        wait(0.2);
        myled = 0;
        wait(0.2);
        
    } // while
    
} // main