Evaluating Performance with the ADCPro Software
7.1.3
GPIO
&
Alarms Tab
The GPIO
&
Alarms tab (as shown in
) includes some of the additional options found within the
ADS8638. Here, the software provides access to setting the GPIO as either a power-down input or an
alarm state output. This I/O line is routed to the onboard LED on the evaluation board to indicate when the
alarm is active.
Figure 11. GPIOs
&
Alarms Tab
The Temperature control is used to read back the temperature control and enable high and low alarms
along with hysteresis. When reading back the temperature reading, the result is read back in codes where
it must be converted to a temperature using the parameters described in the ADS8638 product data sheet.
The high and low alarms, along with hysteresis settings, behave the same way that the analog input
channel alarm settings do.
18
ADS8638EVM-PDK
SBAU192
–
July 2011
Copyright
©
2011, Texas Instruments Incorporated
