SPin2 SD card directory display

LMS

Has anyone got a very simple SPin2 app or obj to read an SPi connected SD card and display on the terminal.

To show that it is working and reading files, a bit of a SD Card "hello world"

Thanks

AndyProp

Read from SD Card and display some contents of a file

CON 
  _clkfreq  = 300_000_000

CON
  HEAPSIZE = 32768

VAR
  long f1
  byte bstr[512]

OBJ
   c : "libc.a"               ' C standard library

PUB main() : err | i,ch
  err := _mount(@"/sd", c._vfs_open_sdcard())
  debug(sdec(err))
  ifnot err
    f1 := c.fopen(@"/sd/test.txt",@"rb")
    debug(sdec(f1))
    ifnot f1
      debug("Error at open")
    else
      c.fread(@bstr, 511, 1, f1)
      debug(zstr(@bstr))
    c.fclose(f1)

ChrisGadd

Just posted this FAT32 object to the OBEX. Tried to make it as simple to use as possible.

CON
  _CLKFREQ = 80_000_000
  _SD_MISO = 58                   
  _SD_SCK  = 61                   
  _SD_MOSI = 59                   
  _SD_CS   = 60                   
VAR
  byte  buffer[2048]
OBJ
  sd : "SD card driver"
PUB main() 
  if sd.mount(_SD_CS, _SD_MOSI, _SD_MISO, _SD_SCK)
    sd.openFile(string("filename.txt"))
    sd.read(@buffer,sd.fileSize())
    debug(zstr(@buffer))

AndyProp

@ChrisGadd said:
Just posted this FAT32 object to the OBEX. Tried to make it as simple to use as possible.

CON
  _CLKFREQ = 80_000_000
  _SD_MISO = 58                   
  _SD_SCK  = 61                   
  _SD_MOSI = 59                   
  _SD_CS   = 60                   
VAR
  byte  buffer[2048]
OBJ
  sd : "SD card driver"
PUB main() 
  if sd.mount(_SD_CS, _SD_MOSI, _SD_MISO, _SD_SCK)
    sd.openFile(string("filename.txt"))
    sd.read(@buffer,sd.fileSize())
    debug(zstr(@buffer))

I tried it, did not work on my card, I am having a hard time with cards at the moment anyway so it does not surprise me.

I can list the directory in Taqoz via Flexprop terminal and see a text file exists but that's about it.

Attached an image of mine in case you like to test that type too.

ChrisGadd

Re-verified that it works with all of my cards, all but the 512MB are SDHC, in a full-size socket and on the P2 eval board micro socket, all good provided it's formatted as FAT32.
The mounting/initialization routines are based on FSRW, and the spi routines on sdspi_fast_bashed.

AndyProp

@ChrisGadd said:
Re-verified that it works with all of my cards, all but the 512MB are SDHC, in a full-size socket and on the P2 eval board micro socket, all good provided it's formatted as FAT32.
The mounting/initialization routines are based on FSRW, and the spi routines on sdspi_fast_bashed.

Thanks Chris, I will have a look in a few days when I get some new boards.

It would be interesting if somehow you could make a version in Forth & Taqoz or working together so that Taqoz has the 32 bit ability