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    Unfortunately there is not an exact mirror. To...

    Unfortunately there is not an exact mirror. To give you an idea check the driver for betaflight: https://github.com/betaflight/betafl...f4135c04afe3fd. It implements both ways.
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    @gotty101 - glad you got it working - looks good...

    @gotty101 - glad you got it working - looks good in the photos.
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    @PaulStoffregen - Great explanation ! You can...

    @PaulStoffregen - Great explanation !

    You can see some of what Paul is talking about if you look at the flexspi_ip_read, flexsp_ip_write and flexspi_ip_command functions in the sketch. Right now...
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    @PaulStoffregen Thanks for getting back to me -...

    @PaulStoffregen
    Thanks for getting back to me - know you are busier than a one-armed paper hanger right now. Gave me a lot to think about. Now to do some more reading and then back to playing -...
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    Ok playing around some more but think I am stuck...

    Ok playing around some more but think I am stuck on LUTs again. So anyone that is a LUT expert wondering if you all could help with a few things.

    In going through the existing code for PSRAM and...
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    @gotty101 You may have to change the display...

    @gotty101

    You may have to change the display timing settings in the registers.h file. Or just a quick look at your lib looks like may be something with vsynch or vsynch functions that i dont see...
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    @KurtE and @Manu As far as I can see both libs...

    @KurtE and @Manu
    As far as I can see both libs are in sync. The master in my fork was updated with all the changes in the branch where @KurtE and I did all the updates. @KurtE thanks for the...
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    Way from any expert here but from what I read and...

    Way from any expert here but from what I read and have reviewed the answer is no LUTs are used with regular Serial. That one lib I referenced lets you do either/or.
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    Think that is one of the things we never got...

    Think that is one of the things we never got around too was checking all the examples sketches to see if they still worked. The lib was kind of overhauled. All the memory stuff was done by...
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    Ok it lives after a successful operation :) and...

    Ok it lives after a successful operation :) and some playing with LUTs, Raw Dump:

    Begin Init

    Status before Reset:
    * FLEXSPI2_RFDR0=00000000
    Status 1: 00
    Binary: 0

    RESET ISSUED
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    Quick status. Not sure I did this right,...

    Quick status. Not sure I did this right, probably not or my chip is not on right :) Here is the start of using FLEXSPI with the NAND chip where the FLASH goes:

    #define LUT0(opcode, pads,...
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    @ecurtz Thanks for posting so I can at least...

    @ecurtz

    Thanks for posting so I can at least do a verification that i did the soldering correct. Will also help when I try to use FLEXSPI :)
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    Just by way of update and warning. Got my NAND...

    Just by way of update and warning.

    Got my NAND chips from Digikey and just soldered up one to a T4.1. Soldering that chip is not easy, at least for me, it was a real challenge to get everything...
  14. @KurtE Sorry was busy soldering up a couple more...

    @KurtE
    Sorry was busy soldering up a couple more T4.1's.

    Was the hack we put for drawing from SD Card was in the sketch itself - we used drawRect for the scanline?
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    Just thought you should know. Couldn't find much...

    Just thought you should know. Couldn't find much on it.
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    Could very well be looking for a specific...

    Could very well be looking for a specific command. Someone identified it as "The dongle identifies as VID_0BDA&PID_8771" Someone else said its a "The adapter has a realtek rtl8761a". Probably start...
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    Received my 7in RA8875 display and hooked it up. ...

    Received my 7in RA8875 display and hooked it up. Ran the ManyGauge example sketch with a T4.0 at 600Mhz without issue.
    20804
    Also ran benchmark.ino and FontTest4 with no problem at default SPI...
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    Going to be interesting. Just reading the reviews...

    Going to be interesting. Just reading the reviews and a few people complaint about it not pairing with the PS4 joystick. The very last review in the list was interesting. Seems you have to use...
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    Could be the dongle is ble?

    Could be the dongle is ble?
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    The Rii keyboard/mouse may need to be paired with...

    The Rii keyboard/mouse may need to be paired with the keyboard object - remember that on my keyboard/mouse Rii i had to type "0000" on the keyboard then it would pair - man memory is getting tougher...
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    A simple solution to not checking the json is to...

    A simple solution to not checking the json is to go to "File => Preferences" and un-check the box that says "Check for updates on startup". That should prevent it from going to the internet to check...
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    @defragster Good Morning: May be the dongle...

    @defragster Good Morning:

    May be the dongle itself. Reading the debug looks like it recognizes the dongle:

    *** Device Bluet bda:8771 - connected ***
    manufacturer: Realtek
    product:...
  23. Thread: ILI9341 Speedup

    by mjs513
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    @KurtE implemented getTextBounds as well as using...

    @KurtE implemented getTextBounds as well as using GFX fonts into his ILI9341_t3n library as well as having frame buffering support. Any potential of using that library in teensyduino instead of the...
  24. Thread: uNav INS

    by mjs513
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    Maybe this will make it a bit clearer, added some...

    Maybe this will make it a bit clearer, added some notes along the test curve:
    20773
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    Just saw b3 was released, right on schedule :) ...

    Just saw b3 was released, right on schedule :)

    Noticed Adafruit GFX was not auto installed with Teensyduino so remember to install it from library manager. It will auto install Adafruit BusIO as...
  26. @ftrias and @defragster Ok got it working. ...

    @ftrias and @defragster

    Ok got it working. Just had the wrong file in the hardware/tools. Wasn't expecting another a GDB cmd window to pop open either, probably should read the readme better.
  27. @ftrias Sorry for the delay in responding - keep...

    @ftrias
    Sorry for the delay in responding - keep getting sidetracked.

    Anyway I followed these instructions in the readme:


    Just for clarity the teensy_debug file I copy to 'hardware/tools' is...
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    @ecurtz Thanks for starting this thread, kept...

    @ecurtz

    Thanks for starting this thread, kept meaning too but kept getting side tracked with other things :)

    Anyway @defragster posted a NXP Community question on using NAND: FlexSpi NOR and...
  29. @ftrias Ok since I also install via the zip...

    @ftrias
    Ok since I also install via the zip file, so I ran the following from the command prompt ffter I downloaded and put all files in the Arduino Libraries folder.:

    teensy_debug...
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    @gotty101 Ok lets start at the beginning. ...

    @gotty101

    Ok lets start at the beginning.

    1. You need to reinstall the RA8876 library from github: https://github.com/mjs513/Ra8876LiteTeensy. Then delete the RA8876Lite that you installed for...
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    Thanks - missed the updates to MTP_T4 :) See the...

    Thanks - missed the updates to MTP_T4 :) See the logger example now.
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    Thanks @mborgerson. Wouldn't be the first time I...

    Thanks @mborgerson. Wouldn't be the first time I edited the some of the core files :)

    Oh if I can ask you one more question - can this be used with a T4.0 using an external card reader? Besides...
  33. Thread: uNav INS

    by mjs513
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    @brtaylor Well finally got the whole test bed...

    @brtaylor
    Well finally got the whole test bed set up with a simple logger and a button to end logging and close the file.

    Plot is a bit confusing but put a little plot of the lat/long from...
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    Thank you for the updated zip. PS. I noticed...

    Thank you for the updated zip.

    PS. I noticed that you had a custom MTP Responder Library for you logger when I was going through it. Like how you used the pointer for the file system instead of...
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    Glad that worked but not sure why still the...

    Glad that worked but not sure why still the problem with i2c. Guess i will be buying for testing.
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    Are you using the latest IDE/TD (1.83 and...

    Are you using the latest IDE/TD (1.83 and 1.53beta2)? At one point there was alot of work done to prove i2c comm?

    One of the things i did to debug I2C as a test was to put some delays after...
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    Just a glance at the library it seems all its...

    Just a glance at the library it seems all its doing is sending bytes through I2C using Wire which is pins 18/19.

    Would suggest that you leave the CPU clock at 600Mhz and edit the .cpp file to put...
  38. @KurtE Very true. The only other place that I...

    @KurtE
    Very true. The only other place that I see the use of QuadTimers is when you do AnalogWriteFrequency:

    void analogWriteFrequency(uint8_t pin, float frequency)
    {
    const struct...
  39. @janbbeck In the Teensy 4 core you will a file...

    @janbbeck

    In the Teensy 4 core you will a file called startup.c, in there you will see that it calls pwm_init (which is in pwm.c) when the T4.x starts up. To save some time here is what pwm_init...
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    Very cool indeed. Oxygen and kerosene,...

    Very cool indeed.

    Oxygen and kerosene, reminds me of Goddard's first rocket, Liquid Oxygen and gasoline. Congratulations!

    Not sure if you have seen this guys efforts but its fun too:...
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    Probably should start a new thread for NAND...

    Probably should start a new thread for NAND memory.

    as for MTP change = that mode wasn't put into the 1.53 core so we have to edit it each time.
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    @PaulStoffregen Was just using MTP responder...

    @PaulStoffregen

    Was just using MTP responder with T4.0 and remembered an issue we were have with using MTP above 450 Mhz. Basically above 450Mhz MTP responder would not work. The fix was...
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    @PaulStoffregen Thanks for the info Paul. ...

    @PaulStoffregen
    Thanks for the info Paul.

    Website updates and documentation have to be first as the site does need some updating. That's going to be a job and a half.

    When you dangle little...
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    Good Morning - sorry i missed this last night. ...

    Good Morning - sorry i missed this last night. Sounds like a plan.

    Know its early but any thoughts on which NAND chips you are looking at or what FLASH Chips yet or should I just be patient. ...
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    @PaulStoffregen - are you playing on pulling in...

    @PaulStoffregen - are you playing on pulling in The spiff library. If so be careful which branch. If you want I can pull it into a separate repository.
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    SPIFFS are not set up for PSRAM, only for FLASH,...

    SPIFFS are not set up for PSRAM, only for FLASH, never tested with 2 FLASH Chips though. I would be reluctant to use PSRAM for logging data though, if you were to loose power you would loose...
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    @mborgerson - @defragster Just as a test I used...

    @mborgerson - @defragster
    Just as a test I used the SDFat-beta BufferedPrint example and used it to log the data to the SD Card on SPI and it worked without a problem.

    So question is what really...
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    Makes sense for an on demand application to me. ...

    Makes sense for an on demand application to me. The issue I am having may be associated that I am trying to use an external card reader on SPI and SDIO.
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    I did make a couple of changes but right now its...

    I did make a couple of changes but right now its hanging on File open using an external Card reader on a T4.0


    bool DataLogger::OpenDataFile(const char *filename) {
    Serial.print("Opening FIle ...
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    @mborgerson Believe me I say I understand your...

    @mborgerson
    Believe me I say I understand your fundamental rules. Been there and done that.

    In some cases though you need to process the data real-time so say an autonomous vehicle can make...
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