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SD Card Integration Issues on Renesase DA14708

Posted by Conan
6:00 pm
27/05/2025

I guys, I’m trying to integrate an SD card intro my board based on Renesase DA14708 MCus, low level drivers are provided by the SDK, I added an sd_spi driver to complete the fatfs library (ff14) — diskio–sd_spi.

Untill now I managed to initialize the sd_card, and get it into *init_state* ( R1[0] being 0 for the folks who know). However i’m facing some weird writing errors when calling f_mkfs(); (formatting phase)
it’s seems that when writing to some sectors I get 0xff in R1 .
it’s not timing issue since I was step in the code in debug,

I’m bit new to file system and memory device integration so mybe I did something wrong the the ff_conf but I double checked it :p with AI help so any suggestion is welcomed thank you