Naomi Kirby

So far the microSD card seems to work in SPI mode, and I have been to boot from it using the LiteX BIOS. I have thus far been unsuccessful in...

A new commit to the bootloader (https://github.com/oskirby/tinydfu-bootloader/commit/1e0b711ec6c7751dd92b2645906e17b54229aafb) should now enable the DFP port power.

I've added a test to verify that the ADC works as expected (https://github.com/oskirby/logicbone-tests/commit/b8254bc7a177077abc939152cf0f3d3648f6a925)

We also found a more serious issue in the DDR3 package diagram which has DM/~TDQS and NF/TDQS swapped. This means that the DM pins have been floating all along which...

Another comment from the CM is that the XDFN regulators are a pain in the butt, and should be substituted with a larger and less ambiguous part (such as a...

While we're at it, the PGOOD LED (D1) is way too bright and we should increase its inline resistance (R10). To avoid adding another line item to the BOM, the...

After a quick bodge, it seems that 750ohm still leaves the green LED in D1 too bright, but the red LED is about right. I think the whole circuit around...

For the record, I was working with the BBB_SRM revision A5.2 dated April 11th, 2013, which was hosted on Adafruit's website.

For the DFU bootloader, it has been requested to add some non-volatile state that can allow the user image to boot into the DFU image without needing to physically press...

I think my favourite solution so far to the non-volatile "goto DFU" problem is to use a small IO expander such as the PCA9570 to control the pull-up on the...