The SD card module provides the micro memory card interface and it is connected to ESP32 via SPI port. This experiment, creates a “sample text file” inside the SD card, and then written with the running text. ESP32 opens the “sample text file” for reading and dump the text on debug port.
Please visit the following "Instruct-able" channel for further information and programming code.
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ESP32 – Micro SD Card Interface implementation source code
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![](https://i.ytimg.com/vi/08MXeM0Qb8Y/maxresdefault.jpg)