Newer releases of Processor Expert (e.g. in Kinetis Design Studio (KDS)) come with a ‘graphical’ (or ‘tabbed’) view of the Component Inspector. The UI elements are different and ‘tabs’ are using:
Component Inspector in Tabbed View
I like much more the earlier ‘no-tabs’ view. Luckily, there is a setting to switch the view back.
Question: How to build a low-cost logic open source logic analyzer for less than $15?
Answer: combine the Freedom KL25Z board with OLS!
500 Hz signal with 50% duty cycle in LogicSniffer
This is the start of a multi-post tutorial about the Freescale Kinetis SDK, released back in April as beta version. The SDK a set of peripheral drivers, and will become the standard software foundation and drivers provided by Freescale for their ARM Cortex based devices. Similar what other vendors already do. While this is a good step, it is the same time very disruptive for my university projects with new Freescale Cortex-M devices. And with everything new (and beta), it needs time to learn. So this post is about creating a Do-It-Yourself Kinetis SDK project from scratch for Eclipse. This part is about the startup code: about everything to get the application started.
FRDM-K64F with SD, nRF24L01+ and HC-06 Bluetooth
The ARM Cortex-M4F on the Freescale FRDM-K64F board can run up to 120 MHz. Here is how to get it running with maximum speed:
FRDM-K64F Board
Pictures (click to enlarge) from another motor bike tour last week-end. Starting above Schwyz:
Rigi Range
As outlined in “How to Add Register Details View in Eclipse“, I have a nice register detail level viewer for Eclipse and GDB. But one problem showed up: there were entries showing with %s:
PCR Register with %s
The reason is that the parser is not handling the dimElementGroup of CMSIS-SVD.
Clouds are fascinating… A thunderstorm front rolled over us after a hot summer day. After that front, the sky opened up with a blue window, painting a light blue combined with red colors from the sun set. Fascinating…
Blue Cloud Window
This gallery contains 18 photos.
After the Swiss Mountain Three-Pass-Tour: Susten – Grimsel – Furka, this long weekend was perfect for an extended mountain pass ride: Brünig – Grimsel – Furka – Gotthard – Nufenen – Grimsel – Susten. Starting from the Lucerne side, the Grimsel was … Continue reading
So I have now a portable GPS data logger (see “Tutorial: Freedom Board with Adafruit Ultimate GPS Data Logger Shield“). What to do with it? It would be cool to see the data and tracks in Google Earth? Yes, that’s doable in a few steps…
GPS Logger Waypoint Data with Google Earth Street View: Riding through Schwyz towards the Mythen Mountain peaks
For a project I need to change the PWM duty cycle after a PWM period is over. One way to do this is to have an interrupt at the end of the PWM period, and then set the new PWM duty (compare) register value in the interrupt. That works fine for ‘slow’ PWM frequencies, but if the PWM frequency is high, the CPU load is massively increasing. A better way is to use DMA (Direct Memory Access).
FRDM-KL25Z with DMA PWM and Logic Analyzer
MCU on Eclipse 