Kinetis MicrocontrollersのトピックRe: blink led frdm-k22f

blink led frdm-k22f

briancavanagh — Wed, 11 Jan 2017 22:02:31 GMT

Hi All,

I'm using KDS to write code for the FRDM-K22F board.

I was hoping to write code with the bare minimum of files so I feel more in control of using KDS without help from the online mbed examples.

What I used as an example was the code I can drag+drop into the mbed (Online), which does work.

The attached shows a very simple example of the code to flash the RED LED (RGB) on the board. When I review the code there's an include "mbed.h" that I don't see in any of the files.

In the end, here's what I would like to accomplish:

1. Using KDS, start a new project

2. Add the correct "Include Files".

3. Write the code to Blink the red led.

I'm trying to always use KDS and become familiar with the tool.

Thanks,

Brian

Re: blink led frdm-k22f

BlackNight — Thu, 12 Jan 2017 06:54:50 GMT

Hi Brian,

it all depends how deep you want to go into the bits and settings.

Basically you need:

create a project for your device
Turn on the peripheral clocks
Mux (multiplex) the pins for GPIO functions
Configure the pins as output pins
toggle the pin voltage level

I list you below a few tutorials and pointers. They are for other boards, but can be easily adopted for the FRDM-K22F.

If you want to do it on a higher level, use Processor Expert, for example: Tutorial: Enlightning the Freedom KL25Z Board | MCU on Eclipse
Newer devices are using the Kinetis SDK. Tutorial: Blinky with the FRDM-KL27Z and Kinetis SDK v2 | MCU on Eclipse shows how to blink a LED with the SDK V2.0
There is the Pins tool which helps with the muxing, and here is a tutorial for it: Tutorial: Muxing with the New NXP Pins Tool | MCU on Eclipse

I hope this helps,

Erich

Re: blink led frdm-k22f

Robin_Shen — Thu, 12 Jan 2017 08:00:58 GMT

Hi Brian,

There is a simliar example(flash the RED LED) in SDK_2.1_FRDM-K22F.

You can debug the FRDM-K22F using onboard debug interface. Please refer: GDB Debugging with Kinetis Design Studio

Best Regards,

Robin

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