Clarification on SD_CARD Pins

[rudi ;-)]

hi

i have seen some circuits and all have the same "not ideal thinking" about SD Card.
the most creator think this for SD CARD

SD_CLK ( IO6 )
SD_DAT0 ( IO7 )
SD_DAT1 ( IO8 )
SD_DAT2 ( IO9)
SD_DAT3 ( IO10 )
SD_CMD ( IO11 )

SD_Flash_Pins.png (46.55 KiB) Viewed 8972 times

be sure your circuit is well mean - this are pins for the SPI Flash
and just in time there is no sharing code available with this as SD Card and SPI Flash

the SD Card Demo example is on this pins

SD_HOST_CLK ( IO14 )
SD_HOST_D0 ( IO2 ) ( switched for Firmware flash )
SD_HOST_D1 ( IO4 )
SD_HOST_D2 ( IO12 )
SD_HOST_D3 ( IO13 )
SD_HOST_CMD ( IO15 )

SD_Example_Code.png (66.33 KiB) Viewed 8972 times

hope this helps


best wishes
rudi

@ivan
do you plan SD CARD SPI Version ?

[rudi ;-)]

Wire and Connection: 1-Bit Mode
You need Hardware Pullups!
Software Pullups does not work!

SD_1-BIT.png (17.15 KiB) Viewed 8860 times

[ESP_igrr]

do you plan SD CARD SPI Version ?

Yes, the SD SPI driver is almost ready! Hope to release it soon.

[rudi ;-)]

do you plan SD CARD SPI Version ?

Yes, the SD SPI driver is almost ready! Hope to release it soon.

txs.

for completion now:

SD Mode
like the Demo in ESP-IDF
you can use 4Bit Mode (Dat0, Dat1, Dat2, Dat3) or 1Bit Mode (Dat0 )

01_SD_SPI_SDIO-MMC.png (33.62 KiB) Viewed 8849 times

SPI Mode ( driver comes like Ivan sayed )
you can drive by usually SPI Master then with MISO, MOSI, CLK, CS

02_SPI_SDIO-MMC.png (22.31 KiB) Viewed 8849 times