// returns the measured temperature
double get_measurement(unsigned int channel, int* semaphorePtr) {
int result;
int local_data;
double result_d;
ads_config(INTERNAL_SENSOR,channel); // start internal sensor measurement
delay_ms(10);
while (*semaphorePtr != 0) {delay_ms(1);}
*semaphorePtr = 1;
local_data=ads_read(EXTERNAL_SIGNAL,channel); // read internal sensor measurement and start external sensor measurement
*semaphorePtr = 0;
delay_ms(10);
while (*semaphorePtr != 0) {delay_ms(1);}
*semaphorePtr = 1;
result=ads_read(EXTERNAL_SIGNAL,channel); // read external sensor measurement and restart external sensor measurement
*semaphorePtr = 0;
local_comp = local_compensation(local_data);
result = result + local_comp;
result=result & 0xffff;
result = adc_code2temp(result);
//printf("10x temp is %d\n", result);
result_d=((double)result)/10;
return(result_d);
}
void ADC_display()
{
//char data[5];
//float sensor;
static signed int local_data, far_data;
signed int temp;
flag &= ~ BIT4; // flag is reset
if (!(flag & BIT5))
{
local_data = ADS_Read(1); //read local temperature data and start a new
} //conversion for far-end temperature sensor.
else
{
far_data = ADS_Read(0); //read far-end temperature,and start a new conversion
//for local temperature sensor.
// transform the local_data to compensation codes of far-end.
temp = far_data + local_compensation(local_data);
temp = ADC_code2temp(temp); // transform the far-end
// thermocouple codes to temperature.
if(flag & BIT8) // display temperature in Fahrenheit
{
Act_temp = temp * 9 / 5 +320;
LCD_display_temp(1,8,Act_temp);
LCD_display_char(1,14,'F');
}
else
{
Act_temp = temp;
LCD_display_temp(1,8,Act_temp);
LCD_display_char(1,14,'C');
}
}
}
// returns the measured temperature
double
get_measurement(void)
{
int result;
int local_data;
double result_d;
ads_config(INTERNAL_SENSOR,0); // start internal sensor measurement
delay_ms(10);
local_data=ads_read(EXTERNAL_SIGNAL,0); // read internal sensor measurement and start external sensor measurement
delay_ms(10);
result=ads_read(EXTERNAL_SIGNAL,0); // read external sensor measurement and restart external sensor measurement
local_comp = local_compensation(local_data);
result = result + local_comp;
result=result & 0xffff;
result = adc_code2temp(result);
//printf("10x temp is %d\n", result);
result_d=((double)result)/10;
return(result_d);
}
