topic Re: BitIO enable/disable pin in Kinetis Design Studio

BitIO enable/disable pin

avnergidron — Mon, 23 Nov 2015 09:25:38 GMT

Hi,

I want to use the processor expert BitIoLddin order to enable and disable output and input pins.

I read this tutorial: Tutorial: Bits and Pins with Kinetis and the FRDM-KL25Z Board | MCU on Eclipse

I am currently able to turn the red led on and off using the BitIO component (which have the BitIOLdd).

My code is doing the following:

(1) Turn on Red led. (Bit1_SetVal();)

(2) Turn off Red Led. (Bit1_ClrVal();)

The problem is that after (2) runs and turn off the led it turns on again in the next line of code...

Thanks,

Avner

Re: BitIO enable/disable pin

BlackNight — Mon, 23 Nov 2015 10:07:30 GMT

Could you share your code? I would put it into an endless loop with some waiting method (you can get the Wait component from SourceForge: McuOnEclipse Releases on SourceForge), like this:

for(;;) {

RED_SetVal(RED_DeviceData);

WAIT1_Waitms(100); /* wait 100 ms */

RED_ClrVal(RED_DeviceData);

WAIT1_Waitms(100); /* wait 100 ms */

}

Erich

Re: BitIO enable/disable pin

avnergidron — Tue, 24 Nov 2015 08:25:50 GMT

Hi Erich,

Sorry for the long delay in replying.

I tested what you suggested and this is working, turning the led on and off.

When I changed it to run only five times, it acted the same, but at the end it left the led turned on.

This is how I define the BitIO:

and my main is:

Thanks,

Avner

Re: BitIO enable/disable pin

BlackNight — Tue, 24 Nov 2015 08:59:49 GMT

Hi Avner,

the LED is low active, so putting the pin LOW with ClrVal() will turn the LED on.

Check the schematics of your board :-).

Erich

Re: BitIO enable/disable pin

avnergidron — Tue, 24 Nov 2015 09:02:11 GMT

Thanks