Using SD card and firmware flash on the same pins
Posted: Tue Apr 04, 2017 10:46 am
I am preparing a schematic with the ESP32 chip now, and I want to connect an SD card to the SD_xxx pins 28-33. My problem is that I can't figure out how to separate the SD card from the flash memory which is connected to the same pins.
I want to use the SD card in 4-bit mode as standard via the ESP32's SD controller.
How is the chip supposed to distinguish between the card and the flash since they both are specified to be using exactly the same pins?
I want to use the SD card in 4-bit mode as standard via the ESP32's SD controller.
How is the chip supposed to distinguish between the card and the flash since they both are specified to be using exactly the same pins?