Interfacing (DSI, CSI, I2C, etc.) • GPIO/UART - Adding 2nd USB Interface

Hello,

I am looking into making a HAT for a Raspberry Pi 4. I am looking to add a second SD card reader without using external ports or external devices but adding a second USB interface.

My plan is to use the the UART on the Pi, pins 14 & 15
run those lines to a CH330 - UART to USB IC
then run data lines to a GL827 which has a USB interface and deals with the SD card reader.

Is this workable? What are the downfalls of using this method?

TIA
-wrightMac

Statistics: Posted by wrightmac — Fri Feb 02, 2024 5:11 pm — Replies 3 — Views 77

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