61c30d881c
The XIAO ESP32-S3 Sense's onboard microSD slot (Seeed XIAOML Kit) is
wired to SPI2 through the GPIO matrix: SCK=GPIO7, MOSI=GPIO9,
MISO=GPIO8 (confirmed against espressif/arduino-esp32's
XIAO_ESP32S3/pins_arduino.h) and CS=GPIO21 (confirmed against this
project's own working xiaoml_bench_logger.ino, which tries CS
candidates {21, 3} in that order -- GPIO3 is a documented fallback,
not the real pin; a Seeed wiki page that names GPIO3 as CS turned out
to be wrong and was the initial, unsuccessful attempt here).
Wires up board_sdmmc_spi_initialize() (common esp32s3 board code,
CONFIG_MMCSD_SPI) into this board's bringup, and adds the
esp32s3_spi2_status() callback (SPI_STATUS_PRESENT for SPIDEV_MMCSD(0))
that esp32s3-devkit and other in-tree boards already provide -- the
esp32s3-xiao board had no SPI board file at all before this.
Validated on the bench: CMD0/CMD41/CMD58 handshake succeeds, SD ver2
card identified (SanDisk 32GB, 62333952 sectors), mounts as vfat,
survives umount+remount with a written file intact.
Needed board defconfig additions (not included in this NuttX-tree
commit; see the 61680_FW project repo for the board config that turns
this on):
CONFIG_ESP32S3_SPI2=y
CONFIG_ESP32S3_SPI2_CSPIN=21
CONFIG_ESP32S3_SPI2_CLKPIN=7
CONFIG_ESP32S3_SPI2_MOSIPIN=9
CONFIG_ESP32S3_SPI2_MISOPIN=8
CONFIG_MMCSD=y
CONFIG_NSH_MMCSDSPIPORTNO=2
CONFIG_FS_FAT=y
CONFIG_FAT_LFN=y
CONFIG_FAT_LCNAMES=y
Assisted-by: Claude <noreply@anthropic.com>
Signed-off-by: Felipe Moura <mouraf@fiteclabs.org.br>
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| .github | ||
| arch | ||
| audio | ||
| binfmt | ||
| boards | ||
| cmake | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| dummy | ||
| fs | ||
| graphics | ||
| include | ||
| libs | ||
| mm | ||
| net | ||
| openamp | ||
| pass1 | ||
| sched | ||
| syscall | ||
| tools | ||
| video | ||
| wireless | ||
| .asf.yaml | ||
| .codespell-ignore-lines | ||
| .codespellrc | ||
| .editorconfig | ||
| .gitignore | ||
| .gitmessage | ||
| .pre-commit-config.yaml | ||
| .yamllint | ||
| AUTHORS | ||
| CMakeLists.txt | ||
| CONTRIBUTING.md | ||
| INVIOLABLES.md | ||
| Kconfig | ||
| LICENSE | ||
| Makefile | ||
| NOTICE | ||
| README.md | ||
| ReleaseNotes | ||
Apache NuttX is a real-time operating system (RTOS) with an emphasis on standards compliance and small footprint. Scalable from 8-bit to 64-bit microcontroller environments, the primary governing standards in NuttX are POSIX and ANSI standards. Additional standard APIs from Unix and other common RTOSs (such as VxWorks) are adopted for functionality not available under these standards, or for functionality that is not appropriate for deeply-embedded environments (such as fork()).
For brevity, many parts of the documentation will refer to Apache NuttX as simply NuttX.
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Alternatively, you can build the documentation yourself by following the Documentation Build Instructions.
The old NuttX documentation is still available in the Apache wiki.
Supported Boards
NuttX supports a wide variety of platforms. See the full list on the Supported Platforms page.
Contributing
If you wish to contribute to the NuttX project, read the Contributing guidelines for information on Git usage, coding standard, workflow and the NuttX principles.
License
The code in this repository is under either the Apache 2 license, or a license compatible with the Apache 2 license. See the License Page for more information.