Unlike the other microcontroller stuffed in an SD card platform — the Electric Imp, [kodera] is, for the most part, respecting the standard pinout for SD cards.

When the clone starts up, it searches the SD card for a file called ‘program.hex.’ This file is sent over to the target Arduino and the new firmware is installed.

I’m trying to use the SPI SD card example from ESP-IDF to mount a micro-SD card via an SPI SD card module. It works fine using Arduino-ESP32, but fails in ESP-IDF. Environment: IDF Version: v5.4.1. OS ...