Product Idea: USB Flash Drives

[dsimic]

Alright, let's take the first step with the BL602 as a PoC platform, if you agree.  Let's find out how the Quad-SPI interface on the BL602 actually works, how is it used on the software side, and if there any limitations to the total size of the SPI flash that can be connected that way.  Sounds like a plan?

I think creating a hat for this device already means that Pine are manufacturing half of the prototype for us. It also means we could then swap out the BL602 at a later date and make it a hat for another device.

Agreed.  So, let's move forward and get the answers to the questions above, if you agree.

I'm unable to find the link to the library you've mentioned above in any of your recent posts...  Could you, please, post that link again?

https://github.com/hathach/tinyusb

Woo-hoo, nice find!  The STM32 H7, which we already discussed about, is on the list of supported microcontrollers!

It looks very interesting for sure, but I also have concerns about how much firmware customization can be done. For example, we would probably have to sign an NDA just to get the documentation (just from the fact I cannot find it online) and we would be bound to a specific closed-source compiler to get their "special instructions". In any case, it will be a massive reverse-engineering undertaking. This is exactly what we're trying to get away from.

The controller is towards what we are trying to create, but it's just not aligned with how we want to get there.

In other words, we'd probably end up with just another closed storage device that only promises to do something, which is not what we want to make.