fdcavalcanti opened a new pull request, #16725:
URL: https://github.com/apache/nuttx/pull/16725
## Summary
- documentation: update docs on SDMMC for ESP32C3|C6|H2
Adds sdmmc_spi defconfig documentation for ESP32C3, ESP32C6 and ESP32H2
boards.
- boards/risc-v: add SDMMC defconfigs for ESP32C3|C6|H2
Adds defconfig to support SDMMC over SPI for esp32c3-generic,
esp32c6-devkitc, esp32c6-devkitm and esp32h2-devkit.
- boards/risc-v: add support for SD Card over SPI on ESP32-C3|C6|H2
Add board support for SD Card over SPI for ESP32C3, ESP32C6 and ESP32H2.
This PR adds board support for SD Card over SPI interface for ESP32C3,
ESP32C6 and ESP32H2. To support this out-of-the-box, a `sdmmc_spi` defconfig
was created and the documentation updated.
## Impact
- Impact on user: Yes. Adds a defconfig to support use of SD Card over SPI.
- Impact on build: No.
- Impact on hardware: Espressif RISC-V devices: ESP32C3, ESP32H2 and ESP32C6.
- Impact on documentation: Yes, adds documentation for the new defconfigs on
the proper board page.
- Impact on security: No.
- Impact on compatibility: No.
## Testing
The following example can be replicated with ESP32C3, C6 and H2 devices.
### Building
- `./tools/configure.sh esp32c3-generic:sdmmc_spi`
- `make` and flash
### Running
Check mmcsd0 is available:
```
nsh> ls /dev
/dev:
console
mmcsd0
null
spi2
ttyS0
zero
```
Then, mount FAT FS and SD Card content should appear.
Read and write possible through echo and cat commands.
```
nsh> mount -t vfat /dev/mmcsd0 /mnt
nsh> ls /mnt
/mnt:
hello.txt
nsh> cat /mnt/hello.txt
Hello World
nsh>
```
### Results
It is possible to read and write data to the SD Card.
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