Today I would like to present you with the latest firmware changes for AMC. The difference is so big that I thought it makes a nice piece for the news page.
I was hopping to fix the really noisy ADC function for several years, and I finally got it. Now it follows closely the potentiometer and the measurements are not affected by motor power noise or other parasitic noise from environment.
To achieve that noise reduction I made my own routine to access directly the ADC registers and handle their sampling timing with a interrupt. This gave me a great deal of freedom to make the sampling time of each channel as fast as 7us (microseconds) or 0.000007sec. Just for comparison, before was 250us using standard library code.
This allowed me to also increase the program cycle speed up to 9000 times (when not receiving), and up to 7000 times per second when receiving data from the computer.
See the comparison video and the timing diagrams below:
AMC1.6 firmware 1.1h timings1.png (61.21 KiB) Viewed 13547 times
AMC1.6 firmware 1.1h timings2.png (60.53 KiB) Viewed 13547 times
AMC1.6 firmware 1.1h timings3.png (54.25 KiB) Viewed 13547 times
Games without a joystick support can have a analogue simulation within X-Sim. The joystick bridge is able to catch your current analogue joystick value and press a user defined direction key more or less often compared to the analogue input value. This is usefull if you play 3rd person games with no joystick support. The bridge is also able to simulate a user defined keyboard key with a joystick button for additional support for jump or look view commands inside a car. You find the joystick bridge and key macro functions in the settings menu of the extractor.l
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