Hi,

Can I please get a code example on how to place the PSoC3 into sleep mode for wake up by a signal on an IO pin.  

I can't find an appropriate second argument for CyPmSleep().  I don't want to wake up the device after a set amount of time, or by using any of the peripherals offered.  The datasheet says that IO is one of the available wake up sources for sleep mode.

Thanks.

Hi kristen,

In order to wake up the device from sleep due to a signal on IO, you need to use PICU (Port Interrupt Control Unit) as the source of wakeup.

For the input pin, set the interrupt mode to Rising or Falling edge according to your requirement.

Next, the parameters for CyPmSleep should be WakeupTime = PM_SLEEP_TIME_NONE 

WakeupSource = PM_SLEEP_SRC_PICU

 Thanks very much.  That has solved my problem.

How to define GPIO pin for Interrupt.

How to use more than one Interrupt for wake up (GPIO AND UART RX)

Looks like you cannot wake from sleep using UART, you would have to be

in one of the active modes.

http://www.mymcu.ru/content/articles/Cypress/AN66083.pdf

Regards, Dana.

One possibility to wake on UART would be to use flow control signaling,

eg RTS and CTS, that only works if you are in control of both host and

client to enforce a 5 wire RS232 connection. If you did use this RTS and

CTS would have to be signal conditioned, eg MAx232 like part, unless

of course you used proprietary solution on both ends.

Regards,m Dana.

To effect an ISR for a pin just place pin on schematic, and on input tab for the

pin there is an option to enable an interrupt. Then attach an ISR component to

the pin, as shown on attachment.

Regards, Dana.

 Thanks to all

 I want to know how to hold the I/O status during sleep and hibernate mode? i create a project can enter sleep mode, but after use mcu wake, the ourput I/O can't hold the status. i test it in CY8CKIT-030 EVK. can you help to solve this issues! thanks!

A point about control register driven I/O -

Regards, Dana.