Omega Speaker Systems TC-08 manual Now do something with the cold junction temperature

Technical reference

13

Example

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

mode with the USB TC-08 driver:

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

//Setting up and running the unit in Legacy mode

//This is designed to make it easier to adapt code written

//for the Serial TC08 for use with the USB TC08 //==========================================================

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

for (channel = 1; channel < 9; channel++)

{

//set each channel up as a type K thermocouple

//switch off filtering for all channels

usb_tc08_legacy_set_channel(handle, channel, 'K', 0);

}

usb_tc08_legacy_run(handle);

last_cycle_no = 0; no_of_readings = 0;

while (no_of_readings < 50) // collect 50 readings

{

usb_tc08_legacy_get_cycle(handle, &this_cycle_no);

if (last_cycle_no != this_cycle_no)

{

last_cycle_no = this_cycle_no; no_of_readings++;

for (channel = 1; channel < 9; channel++)

{

usb_tc08_legacy_get_temp( &reading[channel], handle, channel,

0);

}

//now do something with the readings

//check that they have not overflowed

//by comparing each reading with 2147483647L

//or LONG_MAX (include limits.h)

usb_tc08_legacy_get_cold_junction(handle, &cold_junction);

//now do something with the cold junction temperature

}

}

usb_tc08_stop(handle);