SDFAT Help with MAPLE CLONE « LeafLabs Garden

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SDFAT Help with MAPLE CLONE

(15 posts) (5 voices)

Started 3 years ago by robarino
Latest reply from dugggg

robarino
Member

Hej!

I hope I am not stepping on anyones toes asking about the Olimexino and SDFAT library. I have tries to install the library (there are two...which one is it?). I have tried both of the libraries there and I have had no luck running and saving. The "sys" éxample compiles and I get a blank screen on the serial I was wondering if anyone has it working on the Olimexino? If so maybe you could zip your maple IDE and throw it in a dropbox for me? Or let me know how you got it working. I will give you a big Tack så mycket if you can help me out!

Posted 3 years ago #
gbulmer
Moderator

The discussion of SDFAT library is on http://forums.leaflabs.com/topic.php?id=112

Instructions on downloading the IDE is at http://leaflabs.com/docs/maple-ide-install.html

The library sources are at https://github.com/leaflabs/libmaple

(Full disclosure: I am not a member of LeafLabs of Olimex staff)

Posted 3 years ago #
robarino
Member

Hej Thanks. I have seen the thread but was wondering about some Olimexino specific changes needed to be made and I was wondering if anyone had some experience with this. I am a bit fo a noob with the maple and I would love to be able to use an SD card with this.

Posted 3 years ago #

bubulindo
Member

Hello,

This works for me:

#include "wirish.h"
#include <SdFAT/SdFat.h>
#include <HardwareSPI.h>
#include <stdint.h>

HardwareSPI spi(2);
Sd2Card card;
SdVolume volume;
SdFile root;
SdFile file;

void setup() {
  SerialUSB.begin();
  spi.begin(SPI_281_250KHZ, MSBFIRST, 0);
  SerialUSB.println("type any char to start");
  while (!SerialUSB.available());
  SerialUSB.println();

  if (!card.init(&spi))
    SerialUSB.println("card.init failed");
  else
    SerialUSB.println("card.init passed");
//  spi.end();

//  spi.begin(SPI_1_125MHZ, MSBFIRST, 0);

  delay(100);

  // initialize a FAT volume
  if (!volume.init(&card))
    SerialUSB.println("volume.init failed");
  else
    SerialUSB.println("volume.init passed");

  // open the root directory
  if (!root.openRoot(&volume))
    SerialUSB.println("openRoot failed");
  else
    SerialUSB.println("openRoot passed");

  // open a file
  if (file.open(&root, "output2.csv", O_READ))
  {
    SerialUSB.println("Opened PRINT00.TXT");
  }
  else if (file.open(&root, "WRITE00.TXT", O_READ))
  {
    SerialUSB.println("Opened WRITE00.TXT");
  }
  else
  {
    SerialUSB.println("file.open failed");
  }
  SerialUSB.println();  

  int16_t n;
  uint8_t buf[7];// nothing special about 7, just a lucky number.
  while ((n = file.read(buf, sizeof(buf))) > 0)
  {
    for (uint8_t i = 0; i < n; i++)
      SerialUSB.print((char)buf[i]);
  }
  /* easier way
  int16_t c;
  while ((c = file.read()) > 0) Serial.print((char)c);
  */
  SerialUSB.println("\nDone");
  spi.end();

}

void loop() {

}

Posted 3 years ago #

robarino
Member

Hej Bubulindo!

Did you change anything else other than this code? I saw some people changed the Maple.h file. It does not work for me though. What is the max size of the SD card you can use?

Thanks!

Posted 3 years ago #
bubulindo
Member
Not sure on the max. I bought the cheapest I found at the time (running the risk it wouldn't work). I looked at it now and it's 8Gb. The 1 and 2 Gb cards are way to expensive these days.

Come to think of it, I think I had to change the CS pin.
In file Sd2Card.cpp my pin is 25.
```
//------------------------------------------------------------------------------
void Sd2Card::chipSelectHigh(void)
{
  digitalWrite(25, HIGH);
}

//------------------------------------------------------------------------------
void Sd2Card::chipSelectLow(void)
{
  digitalWrite(25, LOW);
}
```
Is that what you have in your library?
Posted 3 years ago #
robarino
Member

Hej Bubulindo!

Getting close...THANKS! I still get the error:

card.init passed
Error: SdVolume::init() Invalid partition
p->boot 104
p->totalSectors 1936278538
p->firstSector 234827361
Error: SdVolume::init() invalid FAT volume
volume.init failed
openRoot failed
file.open failed

I wonder what is wrong with the card...I have tried three...all get the same error...any ideas...

By the way I owe you a beer!

Posted 3 years ago #
bubulindo
Member

Are the cards formatted for FAT16?

From the top of my head that's all I can think of.

Posted 3 years ago #
robarino
Member

What are the chances you could zip your maple folder and throw it in a dropbox so I could download it. I am doing something wrong and I know how days can disappear with these little problems... I am pretty desperate! This needs to work in the next 24 hours....

Posted 3 years ago #
bubulindo
Member

I'm in Southeast Asia now and just got in my office (7 AM). I have all my Maple stuff in my computer at the hotel, the best I can do is to put that through to you when I arrive there in about 10 hours or so. :\

Also, I ran these examples outside the IDE. I installed the libmaple and compiled from there. Maybe this has something to do with it?
Either way, I can forward both folders to you.

Good enough?
My gmail address is the same as my username here.

Posted 3 years ago #
feurig
Member

bubulindo,

Is 25 also what the spi nss pin is for your maple derivative? If so it makes more sense to use SPIn->nssPin(), Either way the library should probably have a way to set the select pin on init instead of hardcoding the pin in the chip select in the chipSelect routines.
This is legacy bad coding from the original arduino library and should be fixed. http://code.google.com/p/maple-sdfat/issues/detail?id=2

Does anyone know how to get the bugs fixed in the library github since there are at least 4 threads now regarding issues with it?

Posted 3 years ago #
bubulindo
Member

I had a look before and I don't think the library has it. However, it's still a work in progress. I think that whoever was developing it in the beginning just left it at the bare minimum.

There's no interrupt controlled SPI, but then again with the DMA possibility I'm not too sure one would want to have interrupt controlled transmission and it was left for future implementation.

Posted 3 years ago #
dugggg
Member

In addition to the two changes to digitalWrite, you also have to change the pinMode(10) line to pinMode(25) in Sd2Card.cpp for the Olimexino.

Posted 3 years ago #
feurig
Member

http://code.google.com/p/maple-sdfat/issues/detail?id=2

Posted 3 years ago #
dugggg
Member

Feurig, thanks. I noticed that even after hardcoding pin 25 in Sd2Card.cpp, that pin 31 on my Olimexino was still being used by the SPI. So I did those nssPin() changes you suggested. I was then sorely tempted to lazily modify wirish/boards/maple.h and change 31 to 25 there---after all, my Olimexino has behaved EXACTLY like a true maple up until now---but then decided to make a brand new board type called "olimexino" (which involved updating numerous other make-related files). But now it's done right. Kinda cool seeing that olimexino.elf file!

Posted 3 years ago #

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