I want to use Micro_SD card with SPI communication.esp-idf-project\sdspi\main\sd_card_example_main.c
The problem is why I got failed at cmd ACMD41? The SD card always return busy(0x01 response) when the initialization process proceed to command ACMD41.
I've tried to replace with a different SD card, though I got same result.
Dose anyone with similar experience tell me how to fix this problem? I have no idea on it.