ESP32 devkitC spi problem with microsd card reader

[espruino-discuss3]

Posted at 2017-05-29 by user70656

Hi,
i got this problem with microsd card reader ... when putting this simple code:

SPI1.setup({mosi:D23, miso:D19, sck:D18});  
E.connectSDCard(SPI1, D5); 
console.log(require("fs").readdirSync());

i get:

Uncaught Error: Unimplemented on Linux
 at line 1 col 25
E.connectSDCard(SPI1, D5);
                        ^
Uncaught Error: Unable to mount media : NO_FILESYSTEM
 at line 1 col 39
console.log(require("fs").readdirSync());
                                      
=undefined

i followed this schema:
https://farm4.staticflickr.com/3954/33675026246_a5bb2ce4c6_o.jpg

then i followed this schema:
http://www.espruino.com/File+IO

i tried with fat32 filesystem, i tried with ext3

i tried changing pins to free pins ... with software spi
nothing... at all
always same error

please someone help me

[espruino-discuss3]

Posted at 2017-05-29 by Wilberforce

The default firmware for the ESP32 is setup to use an FAT files system on the last 1 Mb of the flash memory. To use and SPI SD card, you would need to do a custom build of the firmware, and turn of the FlashFS option. You can use SPI for other devices with the stock firmware

https://github.com/espruino/Espruino/blob/master/boards/ESP32.py#L35

      'FILESYSTEM',
     'FLASHFS'     
   ],

Would need to be changed to:

     'FILESYSTEM',
#     'FLASHFS'     
   ],

and the firmware rebuilt. Then an external SD card could be used.

---

Posted at 2017-05-31 by user70656

So now i'm using 1mb and formatted it... but what i get now is that doesn't find any library from modules folder in project directory and even other libraries that should be present already in the firmware... the error i get is:

var nfc = require("PN532").connect(I2C1);
WARNING: Module "PN532" not found
Uncaught Error: Unable to mount media : NO_FILESYSTEM
 at line 1 col 26
var nfc = require("PN532").connect(I2C1);

then i format with:

E.flashFatFS({format:true});

and what i get is:

WARNING: Module "PN532" not found
Uncaught Error: Could not open file : NO_PATH
 at line 1 col 30
var mqtt = require("PN532").create(server, {

what is it happening??

---

Posted at 2017-05-31 by user70656

Ok... i just realized that i can't require on the left side of the espruino IDE... that was the problem...
but i still get an error sometimes and sometimes not on trying to make this rfid work:

ERROR: jshI2CRead:, slave doesn't ACK the transfer.
NFC error undefined