SD Card errors

[job-1994]

I am trying to set up the basic sd card operation, and using the begin() function to initialize the SD card, however it continuously comes up with errors. After constantly checking the wiring and such, the code finally settled on this error:

[W][sd_diskio.cpp:143] sdCommand(): crc error
[W][sd_diskio.cpp:479] ff_sd_initialize(): APP_OP_COND failed: 1
[E][sd_diskio.cpp:721] sdcard_mount(): f_mount failed 0x(3)
Card Mount Failed

Using the following code:
SPI.begin(18,19,23); if(!SD.begin(5)){ Serial.println("Card Mount Failed"); return; }

The wiring follows the recommended wiring diagram in the Sample Wiring Diagram provided

Is the issue in the model of the SD card? I have formatted a 32GB microSD HC card to FAT32.

[jackfury413]

Same to me,
I've tried with micro SD card module and also wiring the card directly to the SPI pin (via a SD card adapter) and still cannot mount.
Don't know what to to now.
My cards are 4GB & 8GB FAT32

[jackfury413]

I've tested with another new Sandisk SDHC1 card (different with SDHC) and it works like a charm.
Not sure if this is a bug in the library ?

[me-no-dev]

Whatever it is, I have yet to stumble upon such card here :( I tried cards from 1GB to 32GB and all mount well.

[me-no-dev]

you can try to comment "goto" line here: https://github.com/espressif/arduino-esp32/blob/master/libraries/SD/src/sd_diskio.cpp#L502 and see if that will help

[jackfury413]

Just tried as your suggestion, and the result is as below:

[W][sd_diskio.cpp:137] sdCommand(): no token received
[W][sd_diskio.cpp:137] sdCommand(): no token received
[W][sd_diskio.cpp:137] sdCommand(): no token received
[W][sd_diskio.cpp:479] ff_sd_initialize(): APP_OP_COND failed: 255
[W][sd_diskio.cpp:137] sdCommand(): no token received
[W][sd_diskio.cpp:137] sdCommand(): no token received
[W][sd_diskio.cpp:137] sdCommand(): no token received
[W][sd_diskio.cpp:490] ff_sd_initialize(): READ_OCR failed: FF8000
[E][sd_diskio.cpp:721] sdcard_mount(): f_mount failed 0x(3)

[marshalltaylorSFE]

@jackfury413 I'm experiencing some SD difficulty which may be related... can I ask what pin you're using for chip select?

I've found (on the sparkfun esp32 thing) that pin 2 can't be used because it interferes with loading, pin 5 won't work, but pin 4 (a randomly chosen gpio) does.

Keep in mind I've only been looking at this for a few hours.

Thanks

[capedra]

@marshalltaylorSFE not working with pin 4/5 on MH-ET LIVE ESP32 Minikit.

[capedra]

@marshalltaylorSFE hello again, thank you for the tip. it mounted successfully on pin 4 until I decided to press the reset button and it does not mount anymore.

[jackfury413]

Hi @marshalltaylorSFE , my wiring diagram is the same as the example.
@capedra It seems like your initialization process is not quite stable. According to ELM Chan (FATFS author), the minimum SPI connection of SD card requires a pull up resistor on MISO line. Please with a 1k resistor.

[capedra]

@jackfury413 ok, i'm going to try that.
for now, I tested it using micropython and it didn't work as well. it shows an oserror that there is no SD card on tested CS pins 4/5/33 and also tested 3V3/5V. it convinces me even more than it's a hardware issue.

[capedra]

@jackfury413 Still not working on MicroPython.

[jackfury413]

@capedra do you use any SD card module ?

[clowrey]

My SD card has been working fine for a few weeks. Be careful you don't have any other peripherals setup on the same pins. I originally had LEDC running on one of the same pins by accident which of course made it not work.
Also I have seen some SD breakout boards that put 1K resistors in series with some of the datalines and heard this can cause problems just something you might want to check for. I'm using all the default SPI pins.

This person has compiled an even more verbose pinout diagram that includes the SPI pins, it is not the top images but about 2/3rd of the way down the page. These are the pins I'm using.

https://gojimmypi.blogspot.com/2017/03/jtag-debugging-for-esp32.html

[G6EJD]

Just to confirm, if your using the MH-T Live ESP32 board, or any ESP32 board with an external SD-Card reader, you must ensure there is a pull-up resistor on the MISO line, typically 1k to 4k7 will do. If you fit this and then use the MH-T Live ESP32 board and plug in a Wemos SD-Card adapter/shield, add the resistor and it all works. Use these settings in your sketch:
SPI.begin(18,19,23);
if(!SD.begin(5)) { Serial.println("Card Mount Failed");}

[G6EJD]

pinMode(23,INPUT_PULLUP); solves the problem too, no external resistor needed.