Usage Example - main.cpp

#include "mbed.h"
#include "ds2482.h"

#define MAX_TEMP_SENSORS        16
#define CONNECTED_DS2482_HUBS   2

struct sDS1820_t
{    
    struct sDS2482_t *hub;
    uint8_t u8RomNr[8];
};

struct sDS1820_t sDS1820[MAX_TEMP_SENSORS];
struct sDS2482_t sDS2482[CONNECTED_DS2482_HUBS];

Serial console(USBTX, USBRX);
I2C i2c (p9, p10);

int8_t i8SetupTempSensors(void)
{
    int x=0;    
    
    sDS2482[0].u8Addr = DS2482_ADDR1;     
    sDS2482[1].u8Addr = DS2482_ADDR2;
    
    for(int loop=0; loop<2; loop++)
    {   
        int8_t i8Tmp = i8DS2482Reset(&sDS2482[loop]);
        if(i8Tmp)
            return i8Tmp;
        
        i8Tmp = i8DS2482SetControlBits(&sDS2482[loop], APU | SPU );
        if(i8Tmp)
            return i8Tmp;
        
        i8Tmp = i8DS2482_OWReset(&sDS2482[loop]);        
        if(i8Tmp) 
            return i8Tmp;
            
        while(i16DS2482_OWSearch(&sDS2482[loop]) > 0)
        {            
            sDS1820[x].hub = &sDS2482[loop];
            for(int z=0; z<8; z++)
                sDS1820[x].u8RomNr[z] = sDS2482[loop].u8RomNr[z];                        
            x++;
        }
    }  
    return x;
}

int main(void)
{
    uint8_t u8SensorCount;
    
    mbed_i2c = &i2c; 
    
    console.baud(115200);    
    
    int8_t i8Ret = i8SetupTempSensors();    
    
    if(i8Ret < 0)
    {
        console.printf("Error -i8Ret\n");    
        while(1);       // error occured
    }
    
    u8SensorCount = i8Ret;
    
    while(1)
    {
        // Start Temperature Conversion on all DS1820
        for(uint8_t loop = 0; loop < CONNECTED_DS2482_HUBS; loop++)
        {            
            i8Ret = i8DS2482_OWStartAllDS1820(&sDS2482[loop], 0);
                if(i8Ret) 
                {
                    console.printf("Error %i\n", -i8Ret);
                    while(1);   // error!            
                }
        }
        
        // Wait until all DS1820 have completed the conversion
        for(uint8_t loop = 0; loop < CONNECTED_DS2482_HUBS; loop++)        
            while(!i8DS2482_OWCheckDeviceReady(&sDS2482[loop]));                        
        
        // Get temperature values and display them
        for(uint8_t z=0; z<u8SensorCount; z++)
        {
            int16_t i16Tmp = i16DS2482_OWReadDS1820(sDS1820[z].hub, sDS1820[z].u8RomNr, 0);
            if(i16Tmp < 0)    
            {                
                console.printf("Error %i\n", -i16Tmp);
                while(1);           // error                    
            }
            else
            {
                uint8_t u8Tmp = (i16Tmp-109)/2;
                uint8_t u8Tmp2;
                if((int16_t)u8Tmp*2+109 != i16Tmp)
                    u8Tmp2=5;
                else
                    u8Tmp2=0;
                console.printf("[%02i] %02i", z+1, u8Tmp);         
                console.printf(",%iC | ", u8Tmp2);
            }
            if((z+1)%8==0)
                console.printf("\n");
        }                                        
    }
}