Power off

Designing hardware and software for systems that use the VS1010 MP3 Audio DSP Microcontroller.
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Hannu
Senior User
Posts: 145
Joined: Mon 2016-05-30 11:54

Power off

Post by Hannu » Thu 2021-01-21 13:59

Hi!

Here is something which shuts down VS1010 developer board.

My test method:
Powered through USB connector and UART cable.
  1. write "poweroff" to console
  2. press the PWR button down
  3. Send the last enter to start the program
  4. Disconnect UART cable
  5. Release PWR button
  6. No oscillation on oscilloscope in XTALI pin, or voltages on regulator capacitors
The UART cable feeds back to IOVDD and that's why the LED2 glows dimly. That's why it was disconnected.
Attachments
poweroff.zip
Power off program for VS1010
(30.41 KiB) Downloaded 15 times

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