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esp-idf/components/sdmmc
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Ivan Grokhotkov 71fe7543f1
docs(sdmmc): update information about eMMC support 
Related to https://esp32.com/viewtopic.php?f=13&t=41088

Co-authored-by: Zhang Shu Xian <zhangshuxian@espressif.com>
2024-09-10 09:14:54 +02:00
..
include docs(sdmmc): update information about eMMC support 2024-09-10 09:14:54 +02:00
sd_pwr_ctrl change(sdmmc): update ldo acquire driver to new API 2024-03-25 21:19:12 +08:00
CMakeLists.txt change(sdmmc): update ldo acquire driver to new API 2024-03-25 21:19:12 +08:00
README.md feat(sd): added readme for dependency among SD host related components 2023-11-20 12:30:03 +08:00
sdmmc_cmd.c fix(sdmmc): fix invalid data when reading/writing PSRAM buffers 2024-06-05 13:12:03 +02:00
sdmmc_common.c feat(dma): refactor dma calloc function 2024-04-02 14:30:14 +08:00
sdmmc_common.h feat(sdmmc): add high speed mode switch validation check for SDIO 2024-05-31 09:14:36 +02:00
sdmmc_init.c feat(sdmmc): add high speed mode switch validation check for SDIO 2024-05-31 09:14:36 +02:00
sdmmc_io.c fix(sdmmc): Fix logically dead code in sdmmc_io_rw_extended 2024-07-18 17:28:01 +02:00
sdmmc_mmc.c feat(dma): refactor dma calloc function 2024-04-02 14:30:14 +08:00
sdmmc_sd.c fix: Typo in sdmmc_init_sd_ssr log string 2024-05-28 21:21:34 +02:00

README.md

SDMMC Protocol Layer Driver

SD Host Side Related Component Architecture

Architecture Graph

                        ┌─────────────────────────────────────────────┐
                        │                                             │
                        │  SD Protocol Layer Driver: components/sdmmc │
                        │                                             │
                        └──────────▲────────────────────▲─────────────┘
                                   │                    │
                                   │                    │
                        Implements │                    │ Implements
                                   │                    │
┌──────────────────────────────────┴─────┐         ┌────┴───────────────────────────────────┐
│                                        │         │                                        │
│Host Driver: components/esp_driver_sdmmc│         │Host Driver: components/esp_driver_sdspi│
│                                        │         │                                        │
└────────────────────────────────────────┘         └────────────────────────────────────────┘

Components

  • sdmmc: SD protocol layer driver, it provides SD protocol related definitions and interfaces. With corresponding implementation drivers, sdmmc APIs can help you:
    • send commands to slave devices
    • send and receive data
    • handle error conditions within the bus
  • esp_driver_sdmmc: SDMMC Host driver for ESP SDMMC hardware, it implements the sdmmc protocol interfaces.
  • esp_driver_sdspi: SDSPI Host driver for ESP GPSPI hardware, it implements the sdmmc protocol interfaces.

Dependency

  • esp_driver_sdmmc is in driver layer (G2), it relies on sdmmc
  • esp_driver_sdspi is in driver layer (G2), it relies on sdmmc
  • sdmmc does not and should not rely on esp_driver_sdmmc or esp_driver_sdspi. Though sdmmc is independent, it still stays in G2.