SPI Flash Allocation Table

[PaulStoffregen]

I think the play objects need to gain some lower latency features (mainly, keeping the file open and ready) on the next major round of audio library work.

 

[Frank B]

Paul,

currently, i'm rewriting my sdfile-flashing-utility.
Are there known issues with SerialFlash.eraseAll(); ?
It does not work for me. I'm using it for the Audioshield, together with SD.h

  SPI.setSCK(14);  // Audio shield has SCK on pin 14
  SPI.setMOSI(7);  // Audio shield has MOSI on pin 7
..
  SerialFlash.begin();    
..
  SerialFlash.eraseAll();
  while (!SerialFlash.ready()) {
  }

Edit:
- is eraseAll() the correct function to erase the whole chip ?

 

[PaulStoffregen]

- is eraseAll() the correct function to erase the whole chip ?

Yes, that's correct.

 

[Frank B]

Yes, that's correct.

Can you please give a short example (a few line, not a complete sketch) how to create a file and write it ?
Your example does only create, but writes no data

 

[PaulStoffregen]

Can you please give a short example (a few line, not a complete sketch) how to create a file and write it ?
Your example does only create, but writes no data

Here's a new example that fully copies files from the SD code to flash chip.

https://github.com/PaulStoffregen/SerialFlash/blob/master/examples/CopyFromSD/CopyFromSD.ino

 

[PaulStoffregen]

Since this very old thread, the SerialFlash library was written! It gives filesystem-like access to the flash, while preserving the low latency advantage (the reason you'd want to use NOR flash anyway).

https://github.com/PaulStoffregen/SerialFlash

 

[Pensive]

I'll try and implement it in the next couple of weeks! Thanks Paul.

 

[Len]

Is there any way to copy data to SPI flash (via AVR) directly from computer? Like in Copy from SD example?

 

[manitou]

Not that one would want the overhead of FatFs on a SPI flash, but just for the record, I did get an Adafruit SdFat SPI flash library to work on T3.2 with prop shield SPI flash. Brief discussion here: https://forum.pjrc.com/threads/28505-Can-t-get-files-on-SPI-flash?p=182121&viewfull=1#post182121