Tag Archives: Ardunio

FIXED: Arduino IDE High CPU Usage

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I’ve been using the Arduino IDE for some project development recently, and finding that I’m getting very high CPU usage from Java to the point that it’s slowing my machine down, and then Arduino IDE becomes unresponsive. I couldn’t find any info on any of the forums related to this, but from my own research I believe I have found the problem.

It seems that my problem comes after a long time connected to the Serial Monitor and receiving data from the Arduino. It then gets worse and worse until things start getting unresponsive. The solution for me appears to be to basically just close the Serial Monitor, and reopen it. this can sometimes take a long time, and has caused Arduino to become unresponsive before, causing it to crash and restart. However, this appears to have been the only time I have seen this problem online.

Arduino Engine Control Unit and Stellaris Launchpad LM4F120 Engine Simulator

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The ECU which I am developing is an embedded real time system which is designed to control a single cylinder spark ignition fuel injected gasoline engine. There are a number of ways to approach developing this type of system, and a mixture of these are likely used in industry

  • Develop code on the embedded device and continuously test on the engine 
  • Develop code all in one go on the embedded device and perform a final test on the engine (you would have to be pretty confident in your code for this to be worthwhile)
  • Create an engine simulator in software on a PC and write your ECU software on the PC to control it, then program the ECU to an embedded device to test on a real engine
  • Develop model based code in software like Matlab Simulink, build an engine simulator and ECU separately in the software, then program it to a ‘target’ to run on an embedded device
  • Develop an engine simulator  on an embedded device and develop the ECU on an embedded device to control it

I’m going with the last option. Continue reading →