PSoC™ 4 Forum Discussions

[prudhvi1]

I am using Cy_LPComp_GetCompare() API to compare the input volage and reference voltage. As per API description in PDL library it returns non-zero value when the voltage connected to the positive input is greater than the negative input voltage. 
What happens when input voltage and reference voltage is same?
What is the return value of Cy_LPComp_GetCompare() API ?

[Rakesh_Patrudu]

Hi @prudhvi1 ,

Cy_LPComp_GetCompare function returns a nonzero value when the voltage connected to the positive input is greater than the negative input voltage. Could you please explain why you chose both the input and reference voltages same? Please also specify the PSoC device you are using.

Best regards,
Rakesh

[prudhvi1]

I am using PSoC4 4100S plus device (CY8CKIT-149). I am making the device go to deepsleep when the +ve input is less than -ve input. If +ve input greater than -ve input the LED will blink continuously. 

So I wanted to know the behavior if both voltages are same. Can you please clarify my doubt, What is the return value of Cy_LPComp_GetCompare function if +ve and -ve voltages are same?