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  • duff's Avatar
    04-15-2019, 03:43 PM
    Those are the wakeup pins for deepSleep and hibernate only so if you want every pin to be able wake the teensy up those are your choices. If I where you I would work one step at a time, having a power switch hooked...
    6 replies | 226 view(s)
  • duff's Avatar
    03-26-2019, 10:32 PM
    https://github.com/duff2013/Zilch/releases/tag/v0.3
    10 replies | 245 view(s)
  • duff's Avatar
    03-26-2019, 10:07 PM
    Can you please put your code between code brackets in this forum, it makes reading your code much easier. Just to be sure you are using the Arduino Serial Monitor and what OS? I don't know why you have to push the...
    17 replies | 1089 view(s)
  • duff's Avatar
    03-26-2019, 09:59 PM
    The latest version dose not currently work with the LC, it did before I rewrote it. It's on my todo list so you bringing it up might help me speed up that. I'm currently got a lot of irons in the fire so when exactly I...
    10 replies | 245 view(s)
  • duff's Avatar
    03-26-2019, 06:58 PM
    Can you try the "deepSleep_usb_serial" example and make sure your "USB_Type:" in Arduino is "Serial".
    17 replies | 1089 view(s)
  • duff's Avatar
    03-12-2019, 03:16 AM
    Also in the bigger picture this library uses double buffering so when one buffer is filling up the other is being worked on, this helps with latency. This algorithm has a high cpu load so I had to split up the...
    3 replies | 133 view(s)
  • duff's Avatar
    03-12-2019, 03:03 AM
    Yes, it was done for performance issues. You also should lowpass filter the data stream before feeding it to notefreq. If you look at my GitHub version I do that for you when decimating the audio buffer using the CMSIS...
    3 replies | 133 view(s)
  • duff's Avatar
    03-11-2019, 08:16 PM
    Where is the 3.3V regulator located on the board?
    2261 replies | 311628 view(s)
  • duff's Avatar
    03-05-2019, 04:39 PM
    I've been working on a phase vocoder off and on for awhile now and I can tell you its not easy, well not easy for realtime pitch shifting using Audio library. First off the q15 data type for CMSIS FFT's will lose to...
    14 replies | 2499 view(s)
  • duff's Avatar
    02-21-2019, 09:11 PM
    Ok so DMAMEM is OCRAM which is 256k makes sense now. I saw this comment on this thread just now that explains that Paul is using fixed memory sections in the linker script and will fix later. Ok I'm moving on to other...
    2261 replies | 311628 view(s)
  • duff's Avatar
    02-21-2019, 08:33 PM
    With beta9 I get the cryptic memory error (section `.bss' is not within region `DTCM') with this sketch: #define BUF_SIZE 30066 uint32_t buffer; void setup() { memset(buffer, 0, BUF_SIZE * sizeof(uint32_t));...
    2261 replies | 311628 view(s)
  • duff's Avatar
    02-20-2019, 10:57 PM
    Thanks I did not see this before it definitely helps. I know what was wrong with my optimized fft issue, had to change define about using Kinetis K chips. Even with dsp v1.5.1 it still beats the stock 1024pt fft...
    2261 replies | 311628 view(s)
  • duff's Avatar
    02-20-2019, 03:29 PM
    Just got my T4 and expansion board yesterday, just been poking around for now. Going to work on the low power stuff soon but it looks like I will have to mess with the cpu speeds, voltages and multiple PLLS + Doze bits...
    2261 replies | 311628 view(s)
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About duff

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About duff
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Las Vegas
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Bass Guitar, WSN, Reading, Traveling
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Reasearch Tech

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Best way to reduce this power consumption? 04-15-2019 03:43 PM
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01-31-2013