Add SPI driver, block device layer, and SDHC-SPI SD card driver#18

Merged

AlexLanzano merged 2 commits intowolfSSL:mainfrom

AlexLanzano:spi-flash

Mar 25, 2026

Commits on Mar 19, 2026

[spi, stm32wb, boards] Create SPI device entry in nucleo board files. Implement SPI loopback test
AlexLanzano
committed

Commits on Mar 25, 2026

[spi, block, sdhc_spi, boards, tests] Add block device layer and SDHC-SPI driver. Rework SPI API.
AlexLanzano
committed