Guru
Joined: 05/10/2019
Location: United KingdomPosts: 8670
| Posted: 09:26am 30 Dec 2025 |
If SD cards are set up on ordinary GP pins with all pins specified they are bit-banged IIRC. If you put them on SYSTEM SPI and only configure the CS pin they run on hardware SPI, which is faster and more efficient. This may well make a difference when accessing mp3 files from them.
I don't know this particular board, but I assume that Peter will have used hardware SPI for the SD card.
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Edited 2025-12-30 19:29 by Mixtel90