Omega Speaker Systems TC-08 Benutzerhandbuch

The following code is a fragment of a C application demonstrating how to use
Streaming mode with the USB TC-08 driver: 

//==================================================
// Setting up and running the unit in Streaming mode
//==================================================

(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 ' '

(handle, channel, 

'K'

);

 }

// find out how fast the unit can sample in its current setup state

(handle);

(handle, minimum_interval); 

// sample as fast as possible

// not required (just illustrates that the application
// can be idle while the driver collects the readings)

Sleep(

10000

); 

// use a two dimensional array with an array of readings for each
channel
// In a real application, this would be a nested loop to regularly poll
// the unit for readings

for

 (channel = 

0

; channel < 

9

; channel++)

 {
 no_of_readings = 

( handle,

                   &reading_buffer[channel],
                   &times_buffer[channel],
                   buffer_length,
                   &overflows[channel],
                   channel,
                   

0

,  

// degrees Celsius units

                   

0

); 

// do not fill missing readings

 }

// finished polling, now do something with the readings
// if overflows[channel] is high, then one of the readings
// in reading_buffer[channel] has exceeded the input range
// of the USB TC-08

// only stop the unit when we've completely finished streaming

(handle);

Note: You should close down all other applications while you are performing any
timing-critical data logging tasks. Check that the Windows scheduler does not have
any activities planned during the logging session.