Omega Speaker Systems TC-08 manual Usbtc08setmains handle, 0 // use 50Hz mains noise rejection

Technical reference

11

Example

The following code is a fragment of a C application demonstrating how to use Get

Single mode with the USB TC-08 driver:

//========================================================

//Setting up and converting readings with Get Single mode //========================================================

usb_tc08_set_mains (handle, 0); // use 50Hz mains noise rejection

for (channel = 0; channel < 9; channel++)

{

//set each channel up as a type K thermocouple

//channel 0 is the cold junction and will be enabled

//by setting the third argument to anything other than ' ' usb_tc08_set_channel (handle, channel, 'K');

}

//find out the approximate conversion time

//for a call to usb_tc08_get_single

minimum_interval = usb_tc08_get_minimum_interval_ms (handle); printf("Conversion time: %d\n", minimum_interval);

//Collect 10 readings over approximately 9 minutes last_time = GetTickCount();

for (i = 0, i < 10, i++)

{

//do the conversion for all channels

usb_tc08_get_single( handle,

value_array, // short value_array[9] &overflow_flags,

0); // degrees Celsius units

// print out the values

printf("\n\nTime: %d minute(s)", i); for (c = 0; c < 9; c++)

{

//check for overflows on each channel

//with a bitwise & comparator

//shift the comparison bit to match the channel if (overflow_flags & (1 << c))

{

printf("\nChannel %d overflowed", c);

}

else // no overflow

{

printf("\nChannel %d: %f", c, value_array[c]);

}

}

if (i < 9)

{

while (60000 > (GetTickCount() - last_time)) // 60000ms = 1 minute

{

Sleep(100); // let other applications run

}

last_time = GetTickCount();

}

}