Tutorial: Blinky with Kinetis SDK V1.3 and Processor Expert

This tutorial goes through the steps how to create a blinking LED application, using Kinetis SDK and Processor Expert, using the TWR-KL43Z48M board from Freescale (now NXP):

twr-kl43z48m

twr-kl43z48m

Continue reading

Advertisements

Bricking and Recovering OpenSDA Boards in Windows 8 and 10

Getting a board from a distributor like Farnell/Element14/Mouser (add your own distributor) means that chances are high that the default firmware on it is written years from now because the inventory has not been updated, or because boards are still produced with that original firmware (because of testing?). So what happens if I use board with a firmware developed pre-Windows 8/10 area?

Freshly Unboxed NXP FRDM-KL25Z Board

Freshly Unboxed NXP FRDM-KL25Z Board

It might work, but chances are high that the bootloader and firmware is not ready for the ‘modern age’, and as a result the board might be bricked. If you still have a Windows 7 machine around (I do!), you are lucky. If not, then you need to read this article….

Continue reading

NXP FlexIO Generator for the WS2812B LED Stripe Protocol

The challenge with the selection of a microcontroller for a project is: which one has the required number of UART, I2C, SPI? Combine this with the desired package (48pins, 64pins? LQFN?), the needed FLASH and RAM size and then even the hundreds of available microcontroller shrink to a handful only. And many times I need to make compromises: such as I need two hardware I2C, but the microcontroller matching all my other needs has only one I2C hardware. So I might end up with bit-banging the slower I2C bus. Doable, but not ideal.

What is cool that some of the newer NXP Kinetis microcontroller come with an interesting hardware: FlexIO. A peripheral hardware which allows me to implement a custom protocol, including driving WS2812B (Adafruit NeoPixel) LEDs with a FRDM-KL43Z board:

Four NeoPixels with FlexIO

Four NeoPixels with FlexIO

Continue reading

SWD Debugging the FRDM-KL43Z

It is possible to use the Freescale FRDM-KL43Z to debug another board (see “Using the Freescale Freedom (FRDM-KL43Z) to Debug other Boards“). The FRDM-KL43Z has an on-board debug probe integrated, the OpenSDA. But it is easily possible to debug the board directly with a SWD debug probe like the P&E Universal Multilink or the Segger J-Link.

Debugging the FRDM-KL43Z with SWD

Debugging the FRDM-KL43Z with SWD

Continue reading

Using the Freescale Freedom (FRDM-KL43Z) to Debug other Boards

In “Unboxing the Freescale FRDM-KL43Z Board” I was using the FRDM-KL43Z board the first time. The FRDM-KL43Z board has an on-board debug interface (Kinetis K20, OpenSDA). In this post I show how to use the FRDM-KL43Z board to debug another ARM board.

FRDM-KL43Z Board debugging custom (tinyK20) Board

FRDM-KL43Z Board debugging custom (tinyK20) Board

Continue reading

Unboxing the Freescale FRDM-KL43Z Board

I’m preparing for the next semester at the university starting in September this year. As part of that, I’m currently evaluating the Freescale Kinetis FRDM-KL43Z board:

FRDM-KL43Z Board Unpacked

FRDM-KL43Z Board Unpacked

Continue reading