Hi,

I am new to PSoC programming and would like to have suggestions for the best approach to the measurement of time intervals. In pseudocode what I intend to do is the following:

start = now();
interactWithI2CPeripherals();
interval = now() - start;

The time to process the information in the I2C peripherals isn't known at first and I intend to have the time interval measured with a resolution of 1ms.

My first guess is to use a counter with a period of 1KHz and start the counting prior to the I2C interaction and read the counter value when finishing the I2C interface. Is this a good approach or is there a better solution?

Thanx,

Angelo

If you are trying to do this in your code base then 1 Khz counter would

suffice, using capture or just polled. Counter in bits X 1 mS should be

> largest I2C communication time, or account for counter rollover in

your code.

If your need is to establish the time for design purposes, do a trace when you

are debugging.

Regards, Dana.

A useful ap note -

http://www.cypress.com/?docID=33518

Regards, Dana.