topic Re: TWR-KM34_DEMO_SW in Kinetis Microcontrollers

TWR-KM34_DEMO_SW

daido — Mon, 29 Dec 2014 02:53:45 GMT

Hi all,

Sample program _twr_emeter_demo displays wrong value.

1. Frequency

Displayed 24.870 Hz, applying 50.0 Hz.

2. kWh and kVArh

Increased about 2/3 of kWh value * seconds / 3600.

It seems auxcalc_callback() called @ 800Hz.

Give me any suggestions ?

Re: TWR-KM34_DEMO_SW

Luis_Garabo — Tue, 20 Jan 2015 21:57:12 GMT

Hi,

I have moved your question to the community where you will get support on your issue.

If you have more questions related to this Freescale Product part then please post them in this community where This thread was moved.

Have a nice day.

Best Regards,

Garabo

Re: TWR-KM34_DEMO_SW

xiangjun_rong — Fri, 13 Feb 2015 09:06:40 GMT

Hi, all,

sorry for the delay, as you know that there is K20 on the TWR-KM34Z50M, which generate 3 phase voltage and 3 phase current via PWM channels to simulate the power system, the KM34 uses ADC to sample the 3 phase voltage and current signals and do the corresponding computation.

Unfortunately, I had tested the TWR-KM34Z50M board, but the Freemaster tools could not communicate.

sorry for not finding out the root cause.

XiangJun Rong