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Adding USBDM to CodeWarrior for MCU10.4
If you are following my recent posts, then you know I started using USBDM on OpenSDA as an alternative run control solution. Now with the advent of MCU10.4, the question is: how to use USBDM with it,...
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USBDM 4.10.5 supports now MCU10.4
Wow, that was fast! The SourceForge USBDM project has added support for MCU10.4 (see as well this post) in release 4.10.5 available here, announced in the Freescale Forum. Installation is easy...
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Low-Level Coding with PDD (Physical Device Driver)
As with any software drivers: they are never perfect. The same applies to the Processor Expert components delivered in CodeWarrior for MCU10 or the DriverSuite too. That’s why I have created many more...
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Fix for 3.3V Voltage Drop on FRDM-KL25Z Board
With my Pololu line following robot I had strange problems with the sensor array: the sensor values were very unreliable. Until I have found the problem: Instead of the expected 3.3V, my FRDM-KL25Z...
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Freedom Track Robot with IEEE802.15.4/SMAC
My other robots based on the FRDM-KL25Z use Bluetooth as connectivity. This one is using a Freescale IEEE802.15.4/ZigBee/SMAC module: Chassis The chassis is using 2×20 Pololu track links with two...
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Freedom Board with Segger OpenSDA Debug Firmware
Looks like there is some movement on the ‘OpenSDA Front’: After CodeRed has released their RedProbe OpenSDA firmware, now Segger has released an OpenSDA firmware. With this, I get a low-cost debugging...
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CMSIS-DAP with IAR and the KL25Z Freedom Board
Beside of USBDM, there is another Open Source implementation of a debug interface for the Freedom Board OpenSDA: CMSIS-DAP. CMSIS-DAP stands for ‘Cortex Microcontroller Software Interface Standard –...
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Tracked Robot Update: Ultrasonic, Line Sensor and Shell with SMAC 802.15.4
The FRDM-KL25Z tracked robot from my earlier post has gone trough several upgrades: It features now a line sensor for line following, remote control and Command Line Shell support through 802.15.4 plus...
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Character LCD with 4 Lines
Character LCD’s (like 2 lines with 16 characters each) as in this post are easy to use. Much easier to use compared to full graphical LCDs. The ones I’m using have either 1 or 2 lines, but I saw that …...
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Tutorial: Arduino Motor/Stepper/Servo Shield – Part 1: Servos
This post starts a small (or larger?) series of tutorials using the Arduino Motor/Stepper/Servo Shield with the FRDM-KL25Z board. That motor shield is probably one of the most versatile on the market,...
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Tutorial: Arduino Motor/Stepper/Servo Shield – Part 2: Timed Servo Moves
You have decided: More than 52% voted in Part 1 that the next topic should be Timed Servo Moves. So here we go . This is about how to move the servos over time, instead of moving it to the … Continue...
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FRDM-KL25Z RevE Board arrived
About a year ago I started to use the FRDM-KL25Z board (RevD). Finally, I had it in my hands: the RevE board from Mouser Using the RevD board, I faced several problems: 3.3V supply voltage drop because...
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Adding Quadrature Encoder to the Zumo Chassis
The Pololu Zumo chassis is nearly perfect for my needs: it is small and compact, and neatly works with the FRDM-KL25Z board. I’m able to use it for line following or maze solving. But it lacks a...
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Bricking and Recovering FRDM-KL25Z Boards: Reset, SWD Clock and Low Power
I’m working with a student on building a small autonomous robot platform, based on the FRDM-KL25Z board. We integrated new software modules, compiled and linked, and then downloaded the application to...
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Tutorial: Arduino Motor/Stepper/Servo Shield – Part 3: 74HCT595 Shift Register
For many projects, I have one common problem: I run out of I/O pins on my microcontroller . Luckily, I’m not alone, and the industry has created solutions for this kind of problems. One is to use a...
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Using the HC-06 Bluetooth Module
After my first post using a Bluetooth module, things have evolved a bit. The challenge with these Bluetooth modules is: they look the same, but having different firmware. I did not fully realize that...
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5V Generation from V_IN on the Freedom Board RevE
The Freescale Freedom boards like the FRDM-KL25Z feature an Arduino header so I can stack shields on it. Unfortunately, the Freedom board does not generate 5V if not connected to the USB cable. This...
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Using the FRDM-KL25Z as USB Keyboard
I miss my old DELL laptop. Ok, the new one I received from IT services is not bad. It is faster and has a better screen. But I’m not really happy with the new keyboard. With the previous keyboard I …...
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Low Power with FreeRTOS: Tickless Idle Mode
It took me a while to find the time to upgrade to FreeRTOS V7.4.2, but finally it is done . What caused me to move from V7.2 to V7.4 is a low power application on the FRDM-KL25Z board. V7.4 comes …...
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USB MSD Host for the FRDM-K20D50M Board
The Freedom boards FRDM-KL25Z RevE and FRDM-K20D50M make it easier to use it as USB Host device, as they come with a special jumper to provide 5V to the USB device, so my earlier ‘hack’ is not needed...
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