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Member Since 29 Jan 2015
Offline Last Active May 29 2015 03:39 PM

Topics I've Started

Unique device ID

29 May 2015 - 02:39 PM

I can't find the answer to this question. I apologize if I this is a dup.


I need to uniquely identify a device, as is often the case.


STM32 has a "Device Electronic Signature" feature. Is there a way to read that value?


I know I could store a value on the SD card or EEPROM. But it is important that the value would be protected from being changed (or copied) by a user.


I could you MAC address (as was suggested somewhere else), but I have seen a thread here on about MAC changing. Which is unacceptable.



Configure TIMER to count pulses.

23 April 2015 - 08:02 PM

Is there a way to count number of pulses using a timer? Preferably using a strobe. I want to count number of pulses over a period of time, and get an interrupt at the end.


Is there an API for that?


Configure ADC DMA

23 April 2015 - 07:35 PM

I need to capture a sine waveform (to determine an amplitude).


Is there an API to configure ADC with DMA to capture, let's say 20ms of waveform with 1ms samples?

Measure 60Hz sine wave amplitude using ADC

20 April 2015 - 06:32 PM



I need to measure an amplitude of a 60Hz sine wave (output from a Hall-effect sensor) using ADC on N+2. I am looking for elegant ways to accomplish this. What are my options?


Option 1: Is there a way to configure ADC to collect multiple samples with specified frequency?


Option 2: Can I use hardware-timer interrupt to take a sample every 4ms? Is timer implementation reliable (in terms of interrupt triggering accuracy) to rely on it for timing?


Option 3: Collect 100 samples over period of time and use histogram to reconstruct the sine wave.


Option #1 seem to be the best, but I don't know if Netduino NETMF supports that mode.


Any other ideas?

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