Adafruit Tiny USB on SAMD51 with a SD card

Using Arduino Microcontrollers
1

Hi all,

I am trying to use the Adafruit Tiny USB on a custom variant I have on a SAMD51 microcontroller. I have changed the files accordingly.

I tried using two examples that Adafruit has provided.

  1. "msc_ramdisk" example works fine and my device is identified as a mass storage device. The problem here is it has only about 6KB memory since its the the ram.

  2. "msc_sd" is the example I really want to work but for some reason it is showing USB device not recognized on my PC.

Has anyone being able to set the Adafruit Tiny USB
image

2

Hello Razor101,
Sorry to hijack this topic

I am also working on SAMD51, I try to reduce the power consumption.
In sleep mode (0x04) I have 2.9 mA. In a previous post you mentioned

"By initializing the pins to tri-state buffers, I was able to reach a current consumption of 120uA. Any idea to reach double digits?" -> What do you mean exactly ? is it putting GPIO to output low ?

I am struggling to reduce the power consumption below 1mA

Thanks for any help
Vincent

3

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