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Right now LittleFS does not support the Macronix MX25L12835F chip it only supports the following based on the table in the .cpp file:

{{0xEF, 0x40, 0x15}, 24, 256, 4096, 2097152, 3000, 400000},...

Ok will stop playing on this end. I did put a T4.1 with 8Mb PSRAM but the 512, 1G, and 2G files failed to transfer any of the PDF files and essentially disconnected the flash drives from windows to...

@KurtE = Good Sunday Morning.

Well been testing on a T4.0 and a T4.1 with No PSRAM chips installed. Didn't sink in last night you were using PSRAM last night. Was doing some more testing this...

Just gave the updated branch a try with the NAND 1G chip on SPI, figured that would be the slowest transfers. Couldn't seem to transfer a PDF over 2MB to the chip. However, restoring back to...

Fully understandable - don't get distracted at this point sounds like you are almost there with the bootloader. As you said think you are going to make a lot of folks happy when the bootloader...

#1 I think is along the same lines as was done in MTP in the storage class:


uint32_t addFilesystem(FS &fs, const char *name) {return sd_addFilesystem(fs, name);}
........
uint32_t...

Well I started playing with the wavFilePlayer code but run into a problem how to handle pointing the to constructor for each type of FLASH (QSPI, SPI, FRAM) in the play_sd_xxx files in the audio...

@Frank B
Now that I know LittleFS works with LC I started looking at wavPlayer sketch. Think a few files are going to have modified especially play_sd_wav.cpp

Ok figured out the problem and its not LittleFS. Problem is just running out of memory within the sketch. There are a few array of 2048 and while by itself is not bad, add that with the sketch size...

Another data point. Just ran my bench sketch for read/write and that seemed to work except totalSize is returning 0!

LittleFS Test...

Not nice :(. That was with SerialFlash not LittleFS. LittleFS seems to be having a problem with LC.

MOrning @KurtE
A bit. Hate leaving things hanging so I had to finish off the BBM stuff (not much more I can do on that) and test the LC I just remembered. Going to do a few more tests just in case

Teensy LC Issue with LittleFS

@Frank B asked about if we did any testing with Teensy LC (https://forum.pjrc.com/threads/64592-Teensyduino-1-54-Beta-5?p=266527&viewfull=1#post266527) so I hooked up...

Ok just pushed the last update to plusNAND as well @Paul 's LittleFS library.

I added support for Bad Block Management (BBM) for the M02. As I said before its not turned on (didn't send the...

@PaulStoffregen - @defragster - @KurtE

In regards to BBM on the W25N02 I contacted Winbond to see if it was an error in the datasheet for the N02. Well, I got back an answer today and basically...

Afternoon now for me. So afternoon. Oh man - frustrating when internet is down - been there.

Ok saw where the case statement was missing. Added it in to MTP.cpp and that seems to resolve the...

Morning @KurtE - had my coffee now.

T3.5 and T3.6 both build with no errors. But unless I missed something I can not copy any files to the flash (n01 in this case). However, I can copy from the...

Ok think I am lost on what changes need to be made to the core - think I am behind on some things. Is your core files updated and which branch can I use to be even the MTP changes.

EDIT: Never...

@WMXZ
I have been using @KurtE's branch of MTP for testing so I left the 'd' in to test events - as a debug tool as you said.

At from me the answer is not to both - I do have a Teensy LC someplace but have to find what I did with it.

@defragster - @KurtE - @Paul
Just did a few more tests using the MPT-logger sketch just as a sanity check and see if I got any ECC errors well everything worked. The below is a table of chips...

Very cool Frank - thanks for adding Hardfaults was a nice feature

Just out of curiosity did you try it the way T3.x does it - probably should run a test to see if it works. Stay tuned

EDIT: You probably know this but getting usb event errors on compile for the...

@defragster - @KurtE
Pretty much what Kurt said - there is some sort of conflict but didn't spend much time tracking it down specifically as I just rewrote to get rid of I2S/DMA and use the MPU-9250...

Just as a heads up and by way of explanation of the libraries:
teensy41_extram - only used for direct writing to the PSRAM and is a bit out dated and really doesn't need to be used anymore. Do a...

Ok - reworked the mtp-logger example to just read data from MPU-9250 and store it on any of our flash chips, now it works no problem with the NAND on QSPI. Must be that conflict @KurtE mentioned. ...

Ok just wrote a simple test case that seems to be working - probably do better on next update but wanted to see if this was going to work and it did - so probably a conflict as you identified:
...

Morning - all mornings seem to be the same lately.

Yep - made sure of that. Right now I am in the process of putting together a basic logger using similar functions for creating...

@KurtE - @defragster
Still puzzling me about the problem with using the MTP logger. Wondering if there is some sort of issue with using DMA and/or I2S with QSPI NAND Flash? But funny thing is that...

@KurtE
Of course it would be nice to have a file creation or file modified date but as you said not sure how LittleFS supports that. I was reading that LFS has custom attributes that you can set...

@defragster - @KurtE
Decided to try to modify the MTP_logger example to work with the selected device for logging data. I tested SD, SPI, QSPI, and SPI NAND which all worked without an issue. ...

@KurtE = @defragster
Just pushed an update to plusNAND to bring LittleFS even with what I have updated for NAND. In the READ_BCC test case I added a quick test of the addbblut function - I think I...

Good Morning @KurtE
I finally got to download your latest updates and they seem to be working.

If I hit F5 on the PC they do show up.

The other commands seem to working as well I tried the 'd'...

@KurtE
Thanks Kurt for the info Kurt. Think the stuff for keep reading the data actually helped. If I remember right when I was using it I was able to transfer the 5Mb file. Maybe its worth...

Yep that's the latest. I did the push yesterday for the BBLUT stuff so not sure if you have those changes in your version.

@KurtE
Ok I did what I described in post #591. It recognized the N01 and N02 chips on the memory breakout board was able to create a directory and copy files up to 1.1Mb and the was able...

Morning @KurtE
See you have been busy again :)

Anyway so if I am reading your post right I should go ahead update the core with your changes: https://github.com/PaulStoffregen/cores/pull/532 and...

Took your advice and issued a PR (Updated for NAND/FeRAM.Fram and tweaks) for what we have so far.

That looks like my breakout board C that I tested successfully with the SPI.

Just for reference I am using the Bolderflight library with the 200 ns delays which is the PR that was referenced. ...

Just as a quick update I reconfigured BreakoutBoard D to use SPI1:

#define PIN_MISO1 1
#define PIN_MOSI1 26
#define PIN_SCK1 27
#define PIN_CS1 ...

Ok just got back to this. Unfortunately I deleted my original message before hitting save so this is just a summary. Tested with 4 different breakout boards:

Breakout Board A: DOA both for I2C...

Don't think the problem is with Teensy as @WMXZ stated. Believe there is a problem with SPI implementation with the library.

As a quick and dirty test for SPI with the MPU-9250 I updated an old...

Just tried a couple things moved it over to SPI and used CS = 10.

See failure to correctly who I am register - getting 112 instead of 113/115. There is already a delaynanoseconds(200) with...

Great - another data point. Just hooked up my DFRobot BMP388 to a Teensy 4.0 and its working without a problem. Just got it last night but was distracted with LittleFS again.

EDIT: Think I put...

@KurtE - @defragster -@PaulStoffregen

Just pushed a change up to the repository for W25N01G NAND flash to support Bad Block Management. I brought it to the point of actually writing the Table. A...

As you probably noticed LadyAda requested a PR for them to evaluate so I just sent them a PR: https://github.com/adafruit/Adafruit_BMP3XX/pull/14.

EDIT: Quick up the Adafruit Library has been...

@KurtE
Totally a loss at this point. Something definitely odd going on. For my Flash QSPI tests I used a kludged setup where I solder wires from the Flash pad to a set of headers for the flash...

First the W25Q16JV-DTR is a NOR Flash chip, yes I know that the datasheet is silent on it but if you do a searching you will find that Mouser and Winbond shows it as a NOR flash. Second if you don't...

@KurtE
Ok - I am at a loss now especially since neither pass the teensy41_psram_memtest sketch. That should have worked.

Out of curiosity did you ever give it a try with our old (very old...

Yeah - know the feeling. Glad its working for you.