43 lines
978 B
Markdown
43 lines
978 B
Markdown
|
|
||
|
|
# SD library
|
||
|
|
|
||
|
|
This library provides the integration of ESP32 and SD (Secure Digital) cards without additional modules.
|
||
|
|
|
||
|
|
|
||
|
|
## Sample wiring diagram:
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
For others SD formats:
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
Image source: [Wikipedia](https://upload.wikimedia.org/wikipedia/commons/thumb/a/ab/MMC-SD-miniSD-microSD-Color-Numbers-Names.gif/330px-MMC-SD-miniSD-microSD-Color-Numbers-Names.gif)
|
||
|
|
|
||
|
|
```diff
|
||
|
|
- Warning: Some ESP32 modules have different pinouts!
|
||
|
|
```
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
## FAQ:
|
||
|
|
|
||
|
|
**Do I need any additional modules, like Arduino SD module?**
|
||
|
|
|
||
|
|
No, just wire your SD card directly to ESP32.
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
**What is the difference between SD and SD_MMC libraries?**
|
||
|
|
|
||
|
|
SD runs on SPI, and SD_MMC uses the SDMMC hardware bus on the ESP32.
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
**Can I change the CS pin?**
|
||
|
|
|
||
|
|
Yes, just use: `SD.begin(CSpin)`
|