GPIO when Board reset

davood.ramezani

2012-01-02 05:17:40

hi.
How set logical 0 GPIO Port(Port F) when Bord Reset

open-nandra

2012-01-02 22:34:12

What is the purpose? You can use bootloader to set specific pin to specific
value.

marek

davood.ramezani

2012-01-03 05:48:56

In this circuit When board reset, all relays set auto turn on
http://www.mediafire.com/?pvs2j83jraj2flz
Please help me

open-nandra

2012-01-03 11:40:34

Oh sorry this is WinCE forum. No experience with wince. Sorry againg.

Luc

2012-01-03 18:45:40

I did not check the datasheet, but on most microcontrollers a GPIO is
defined as an input after a reset. So during reset this pin is floating.
You should place pull down resistors on inputs of ULN2803.

Luc

davood.ramezani

2012-01-07 06:08:50

tank you, it's work