Power off

Designing hardware and software for systems that use the VS1010 MP3 Audio DSP Microcontroller.
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Posts: 176
Joined: Mon 2016-05-30 11:54

Power off

Post by Hannu »


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.
Power off program for VS1010
(30.41 KiB) Downloaded 55 times
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