Thank you for the reply, @macaba. I accidentally solved the problem. I had 0ohm resistors in place between between the SD card lines and the ESP32 pins, as that is how the layout for the dev kits are laid out. When I removed the resistor at DAT3 and placed a wire in its place, everything worked. I ...

I'm having problems coming up with a working SD card design. I'm using the pins as the SD_MMC example:
DAT0 : IO2
DAT1 : IO4
DAT2 : IO12
DAT3 : IO13
CLK : IO14
CMD : IO15

And I have pull-up resistors in place for all the pins. But I can't get the SD card to mount with any of the example code in ...

I see. It sounds like a redesign is called for. Thanks for the help and the clarification!

Ah - I see. Sorry about that. I guess I'm confused about the discrepancy between functions of the two slots and why they have those pins as SDMMC pins if you can't use them for that purpose. Am I missing something obvious?

Thanks again, and sorry for the repeat question.

"The only stupid questions ...

I built a board that uses the HS1 pins (SDMMC_HOST_SLOT_0) for an sd card. I'm setting SLOT_0 with:

void app_main(void)
{
ESP_LOGI(TAG, "Initializing SD card");

#ifndef USE_SPI_MODE
ESP_LOGI(TAG, "Using SDMMC peripheral");
sdmmc_host_t host = SDMMC_HOST_DEFAULT();
host.slot = SDMMC_HOST_SLOT ...

Quite right -- Every other schematic I found used the SD flash pins instead of the hs2 pins, so I opted to do that. The problem ended up being electrical -- the diodes that are shown on the schematic by the SD card were the problem. They appear to be totally unnecessary. When I took them off ...

Hi. I just built a board for the WROVER, but I can't get it to flash. I'm using the CP2102 USB to UART chip, which seems to be working fine - recognized as a COM port on Windows and TTY on Mac. Arduino and IDF seem to recognize the chip:


Sketch uses 223488 bytes (17%) of program storage space ...

Hi. Have you had any success with this issue? I'm in a very similar state with a board I just built. Also appreciating any pointers.