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  • wwatson's Avatar
    07-13-2019, 04:33 AM
    @Kurte Thanks for this information. SSD's are something that I have wanted to play with but just could not afford at that time. The plugin SSD drive would be the best choice for me for minimal hardware clutter. I ...
    302 replies | 7145 view(s)
  • wwatson's Avatar
    07-12-2019, 02:40 AM
    @WMXZ, @Jean-Marc Just realized I was testing SPI in uSDFS with T3.2 and T3.6. Never did try with the T4. After trying to play a wave file with uSDFS and the audio board it did not work. My bad! And as WMXZ stated:
    3786 replies | 390516 view(s)
  • wwatson's Avatar
    07-11-2019, 12:25 PM
    The credit for uSDFS goes to @WMXZ. I agree it is a great piece of work. Very easy to understand and use.
    3786 replies | 390516 view(s)
  • wwatson's Avatar
    07-11-2019, 12:07 AM
    Yes there is a way to use the built in SDHC card slot with uSDFS. If you look in the examples directory of uSDFS you will find several examples that give you the option to mount SPI, SDHC, USB or all three. Check out...
    3786 replies | 390516 view(s)
  • wwatson's Avatar
    07-07-2019, 02:35 AM
    @defragster Thanks
    3786 replies | 390516 view(s)
  • wwatson's Avatar
    07-07-2019, 12:28 AM
    @mjs513 - Thanks I guess this is probably where I need to start. I have the latest TD software. TD1.47B4 if I have not missed something. Frank B's MP3 player works perfectly with the SDcard on PJRC's audio board....
    3786 replies | 390516 view(s)
  • wwatson's Avatar
    07-06-2019, 10:36 PM
    @mjs513 No. Actually I meant the SDcard slot on the T4B2 breakout board. Sorry about my bad terminology.
    3786 replies | 390516 view(s)
  • wwatson's Avatar
    07-06-2019, 10:22 PM
    I have been working on getting the T4 to work with the Arduino-Teensy-Codec-lib. It uses the SD library so in an attempt to make it work with mcs I had to parallel all of the functions that did any disk access. I got to...
    3786 replies | 390516 view(s)
  • wwatson's Avatar
    07-03-2019, 01:29 AM
    @Jean-Marc I have been looking at different ways to cache reads and writes from USB Mass Storage drives. This is something that I have no experience with. With the T4 there is lots of memory options to use. On one...
    3786 replies | 390516 view(s)
  • wwatson's Avatar
    07-03-2019, 12:36 AM
    @mjs513 I did not include the SPI SD driver in my code as it seemed redundant with having the original wavFilePlayer code in the Audio library even though uSDFS supports it. Was going to play with that later. Is...
    3786 replies | 390516 view(s)
  • wwatson's Avatar
    07-01-2019, 11:53 PM
    @defragster @mjs513. I had the same problem at first with the music skipping and clicking. What it turned out to be was the size of the buffer. Unfortunately If it's to big then it can't return the data fast enough...
    3786 replies | 390516 view(s)
  • wwatson's Avatar
    07-01-2019, 12:17 AM
    @defragster With FatFs it does not matter if the filenames are 8.3 or upper/lowercase. You can use filenames up to 255 characters long. I am totally saturated with listening to SDTEST#.wav. I just downloaded Audacity...
    3786 replies | 390516 view(s)
  • wwatson's Avatar
    06-30-2019, 10:58 PM
    @defragster Yes it with uSDFS and MSC. Really curious about performance with newer Hard Drives other than my old ones. Got my eye on Frank B.'s MP3 player. From what I can see from the code there is a lot more to...
    3786 replies | 390516 view(s)
  • wwatson's Avatar
    06-30-2019, 09:33 PM
    @all - Not sure if this has been done before. Could not find anything with forum searches. Anyway I was able to create a WavFilePlayer that uses uSDFS and MSC. At this time it works with my thumb drives and most Hard...
    3786 replies | 390516 view(s)
  • wwatson's Avatar
    06-30-2019, 03:33 PM
    @WMXZ - Thanks for the update. That fixed the problem. I really like using this library. Versatile and easy to use:)
    302 replies | 7145 view(s)
  • wwatson's Avatar
    06-30-2019, 02:51 AM
    @WMXZ I don't know of I have missed something but I just did a git pull on uSDFS and I ca't seem to compile 'logger_RawWrite.ino' any more without the following errors. /home/wwatson/arduino-1.8.9/arduino-builder...
    302 replies | 7145 view(s)
  • wwatson's Avatar
    06-16-2019, 10:38 PM
    @mjs513 Not sure if you have the RA8876 RM. If not then here is the link: https://www.buydisplay.com/download/ic/RA8876.pdf On page 52, section 11.4 it describes rotation and mirroring. It says that it can rotate...
    3786 replies | 390516 view(s)
  • wwatson's Avatar
    06-16-2019, 04:42 PM
    @Kurte Downloaded the latest versions of 'Adafruit_RA8875' and 'Adafruit_GFX'. I went through all of the example sketches. Just had to change pin assignments for SD cs, Reset and INT pins. I compiles clean and...
    3786 replies | 390516 view(s)
  • wwatson's Avatar
    06-16-2019, 03:12 PM
    @Kurte I am using the version installed in Teensyduino. I will get latest version from GitHub and test it. Will probably get the latest 'Adafruit_GFX' from GitHub as well. Thanks Kurte:)
    3786 replies | 390516 view(s)
  • wwatson's Avatar
    06-16-2019, 12:12 AM
    @kurte The last time I saw anything from him on GitHub was this https://github.com/sumotoy/RA8876. I also hope he is doing well. I updated his RA8875 driver to use it as a terminal emulator with T36 and a...
    3786 replies | 390516 view(s)
  • wwatson's Avatar
    06-15-2019, 07:26 PM
    @all Wondering if the RA8875 library has been tried yet. Could not find anything about it in the T4 thread. I pulled out my Adafruit RA8875 driver board with 7" touch screen to test with the T4 today. Using...
    3786 replies | 390516 view(s)
  • wwatson's Avatar
    06-10-2019, 12:44 PM
    @WMXZ I am pretty sure it's based on cluster sizes. I 'loggerRawWrite.ino' you display the reported cluster size. I found that it matches the block count sent by FatFs. Ehci.cpp breaks it up into 16384 byte...
    302 replies | 7145 view(s)
  • wwatson's Avatar
    06-09-2019, 10:46 PM
    @mjs513 - This is what I am using with my T36 configured for SPI: https://www.buydisplay.com/default/serial-spi-i2c-10-1-inch-tft-lcd-module-dislay-w-ra8876-optl-touch-panel It also uses the RAIO RA8876 display...
    3786 replies | 390516 view(s)
  • wwatson's Avatar
    06-09-2019, 06:44 PM
    Here is the result of some more tests I ran on the T4 and MSC. Sector Number 6190864, Sector Count 16 msController CallbackOut (static) transfer->qtd.token = 0 msController dataOut (static)31 55 53 42 43 2F 08 00...
    302 replies | 7145 view(s)
  • wwatson's Avatar
    06-08-2019, 09:26 PM
    I thought it would be interesting to see what the read/write speeds are with reading/writing sectors directly through MSC with t4. These are the results with various buffer sizes on HD's: Direct sector read/Write...
    302 replies | 7145 view(s)
  • wwatson's Avatar
    06-08-2019, 06:20 PM
    Understandable, lot's going on right now. I am having a hard time keeping up with all the changes. Need more free time:)
    3786 replies | 390516 view(s)
  • wwatson's Avatar
    06-08-2019, 06:07 PM
    @WMXZ Downloaded TD4.17B3 and installed a fresh copy of Arduino 1.89 Updated uSDFS to your latest version. I ran 'logger_RawWrite.ino' on my seven different HD's and they are averaging 7.5MBs. Very consistent for...
    3786 replies | 390516 view(s)
  • wwatson's Avatar
    06-02-2019, 11:06 PM
    @defragster Yeah, it does seem slow. I am going to use 'RawWrite_FS' and retest everything. It seems the larger the file to a point the lager the MBs is. I think this has to do with the sketch in that the...
    302 replies | 7145 view(s)
  • wwatson's Avatar
    06-02-2019, 09:08 PM
    @All - Sorry I have been offline so long. I have been doing alot of research with the EHCI USB controller and mass storage devices. I think I may found out why USB thumb drives are slower than regular hard drives or...
    302 replies | 7145 view(s)
  • wwatson's Avatar
    05-27-2019, 04:19 PM
    @All, Sorry I have not responded for the last few days. I lost the computer to a power supply flame out. Fortunately I had most of my data backed up but not all of it. I spent most of this long weekend setting up a...
    302 replies | 7145 view(s)
  • wwatson's Avatar
    05-26-2019, 02:26 PM
    I got mine yesterday as well and now that I have my computer working again and have my data recovered, I can start experimenting with the T4 :)
    3786 replies | 390516 view(s)
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USBHost_t36 USB Mass Storage Driver Experiments 07-13-2019 04:33 AM
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