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I'm in the bring-up process for a PoC using the Pactron FX3S evaluation board.
Mass storage demo- works.
My SDIO project - doesn't.
Fx3SDIOUart - doesn't. (Hm...)
What happens is that it will see, ad infinitum, an SD card plugged into either port 0 or port 1 of the board. However, plug in an SDIO card (any, not just a serial- and for my application, any is what is required...), the device hangs HARD, needing to be unplugged and re-plugged in. Does this with either the SDK demo or my application I'm building up.
I debugged it to the event processing level above my callback- it's hanging before that. Do I have duff hardware here? What gives?
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Hi,
We have tested those projects with Pactron DVK and it worked. Please contact Cypress Tech Support so that we can investigate and assist you.
Regards,
- Madhu Sudhan
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Already have a ticket in. Got a workaround, but still working with the engineer since it shouldn't be doing this with the WF111 SDIO WiFi adapter (Yes, I know, not the example, but if you're going to advertise this as an SDIO USB Bridge solution... >:-D)
Right now, I'm working through getting the requests from the Linux MMC stack into the SD Host Controller over USB and that sequencing. First naive attempt...not so hot. Thinking through a better answer right now. Not sure if the loopback with a producer socket callback on the OUT endpoint's a good answer for a generic SDIO bridge. The less polling and more event driven the thing can be, the FASTER it will go- so I'm aiming for just that. It wanders off on me- I can't tell if my IN endpoint response is getting where it should yet. Probably need to get a protcol analyzer in there. 😄