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    @All - I have the PSRAM chip working. It wasn't...

    @All - I have the PSRAM chip working. It wasn't my soldering or a ruined chip:)

    I could not figure out why the one sketch 'teensy41_extram.ino' appeared to be working and...
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    Unfortunately it appears to not be working. I...

    Unfortunately it appears to not be working. I guess I will have to pop that chip off and try again. I will check the solder connections again with my magnifying glass first. I did check for shorts...
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    Experiments With Soldering Memory Chips To Teensy 4.1 Board

    @All - Teensy 4.1 Arduino 1.8.12 TD 1.52.

    Just made an attempt at soldering PSRAM chip to one of my T4.1 boards. 2 hours later I think I have it done without error (I hope). Tried using tape to...
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    What versions of Arduino and Teensyduino are you...

    What versions of Arduino and Teensyduino are you using? There is is no 'Tripple USB' in the 'USB Type' part of the Tools menu. I think @mjs513 was referring to 'Triple Serial' in the 'USB Type' part...
  5. @KurtE, @Frank B - I have spent today...

    @KurtE, @Frank B - I have spent today understanding how EventResponder works using SPI.* and @KurtE test sketch. I think I have a fairly good understanding of how I can use it with MSC. In one...
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    Hi beumerjm, I put in a weekend working on...

    Hi beumerjm,

    I put in a weekend working on this. The RA8876 is going to be difficult to to implement full rotation with text. It seems to be geared more towards graphic rotation than text screen...
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    A quick question. What are the memory...

    A quick question. What are the memory requirements?

    Edit: I think I found what makes uClinux possible on the i.MX RT1060 EVK evaluation board:

    Processor
    MIMXRT1062DVL6A processor
    Memory

    ...
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    A quick question. What are the memory...

    A quick question. What are the memory requirements?
  9. Thanks - I think that may have been where I have...

    Thanks - I think that may have been where I have seen it. In any event (excuse the PUN) I just want to trigger transfers in the background until all transfers are complete up to FIFO size.
  10. Need examples of how to use eventResponder properly

    I have been working with MSC trying to queue or FIFO data reads and writes. I finally have a simple circular FIFO system setup that can FIFO data reads and writes. But I need a non-blocking way to...
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    Don't be sorry. I know you have been very busy...

    Don't be sorry. I know you have been very busy with the T4.1 psram and flash drivers. I have been lurking and watching:) In fact, I just ordered my first two production T4.1's and a few psram chips...
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    Nice work. Just updated to TD1.52 and updated...

    Nice work. Just updated to TD1.52 and updated RA8876-redo. It works well. For some reason I had to use

    digitalWrite(BACKLITE, HIGH);
    to get it to work.
    My display does not seem to work with
    ...
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    I was getting ready to order another 10.1"'...

    I was getting ready to order another 10.1"' display with a capacative touch from BuyDisplay but knowing you have been waiting a month now for it to arrive kinda spooks me. Mine have always arrived in...
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    Thanks @defragster. Questions answered:)

    Thanks @defragster. Questions answered:)
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    @Paul - Congratulations. The T4.1 is looking like...

    @Paul - Congratulations. The T4.1 is looking like a winner same as your other creations:) I am getting ready to order the full monty and have one question about the the 8 Meg flash chip for the T4.1....
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    I downloaded @Frank B's T4_PowerButton library...

    I downloaded @Frank B's T4_PowerButton library and installed on Arduino 1.8.12 and TD 1.52B4 on the T4.1. It works great without any detectable problems.

    Thanks
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    If it's there I know you guy's will find it:) I...

    If it's there I know you guy's will find it:) I did not:(
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    @mjs513 - @MorganS Thanks guys. I have it...

    @mjs513 - @MorganS
    Thanks guys. I have it working on my setup at 47MHZ. Very awesome.

    I have spent today working up a graphics cursor sketch that demonstrates the use of a graphics cursor. I used...
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    If I remember right putPicture_16bpp() was not...

    If I remember right putPicture_16bpp() was not working for one reason or another. I probably forgot about . But this weekend I will play with it and see what the problem was. Maybe something to do...
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    @MorganS You would think that the memory-copy...

    @MorganS

    You would think that the memory-copy functions would be useful to have a mouse cursor or game character move over a background without erasing it. Save the piece of background you are...
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    Michael, I am with you but for a different...

    Michael,

    I am with you but for a different reason. I live in Washington State and we are not as severely compromised as you are. I think due to the situation with Covid-19 everything is going to...
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    Based on the fact that I have never dealt with...

    Based on the fact that I have never dealt with CPT and the fact that drivers for these devices apparently is not that common I would think keeping separate libraries until more information about...
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    This is great I am planning to order another...

    This is great I am planning to order another 10.1" from BuyDisplay with capacitive touch. Will you be selling these?
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    Hopefully I did not sound pushy:) I decided to...

    Hopefully I did not sound pushy:) I decided to buy another 10.1" display from BuyDisplay. This time with a capacitive touch screen. CAN bus would be nice for remote use.
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    This is great. Are you planning a Resistive...

    This is great. Are you planning a Resistive touchscreen variant of this board? Or do I need to buy another display with capactive touchscreen.
    TOUCH SCREEN (Resistive)...
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    I think this is exactly what killed my first...

    I think this is exactly what killed my first display. I ordered another one later on and have been using a 2 amp five volt supply since then. It has not failed for a year or more. Originally I was...
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    Thanks Mike I will give it a try. Lot's to do. My...

    Thanks Mike I will give it a try. Lot's to do. My plate is getting full as well and it take me a lot longer to deal with these things than you programing wizards. Stbasic is secondary to Ra8876Lite...
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    @Paul - Don't bother wasting time on my problem....

    @Paul - Don't bother wasting time on my problem. I figured it out. I was using flexRAMInfo to monitor memory usage. It works with TD 1.52B1 but not TD 1.52B2 or TD 1.52B3. I eliminated those calls...
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    @Paul - I finally have everything ready. I made...

    @Paul - I finally have everything ready. I made sure that I used a fresh copy of Arduino 1.8.12 for installation of both TD's.

    When using TD 1.52B1 stbasic40 uploads without a problem. The Teensy...
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    @ Paul - Sorry about being so vague and...

    @ Paul - Sorry about being so vague and confusing. I should know better than to try to post that late at night. This morning I went through it all again. I will stick with just testing with the T4.0...
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    @All - My OS stopped working with TD 1.5.2B3...

    @All - My OS stopped working with TD 1.5.2B3 from TD 1.52B2. It happened with both the T4.0 and T4.1. This is really vague I know but with all of the programs I have lumped into one huge upload...
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    I seem to have a problem with T4.1 that I will...

    I seem to have a problem with T4.1 that I will elaborate on on the T4.1 beta thread. It's kind of strange but I'm sure it's something I have missed or do not understand.
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    Got the RA8876 running at 47MHz:) I finally...

    Got the RA8876 running at 47MHz:) I finally received my 3" male/female jumper wires. Today I wired up the RA8876 to the T4.x with the 3" jumper wires untwisted and unshielded and was able to...
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    Yes I will. But first I am going try to get the...

    Yes I will. But first I am going try to get the SPI speed up to the 50 MHz that the RA8876 is rated at. You are running at 38Mhz. I am running at 34Mhz. Lead length I think is a factor. But what...
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    @mjs513 - WOW! Color me impressed. I never...

    @mjs513 - WOW! Color me impressed. I never thought that would be possible through SPI on the RA8876.
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    Got it. Thanks Now to do some testing with...

    Got it. Thanks
    Now to do some testing with screen pages.
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    It look like you have modified and tried the...

    It look like you have modified and tried the piptest.ino sketch. I ran that on my T4 with a pipdelay = 0 and was getting a loop time of 1400 to 1500 ms. This was a lot slower than ~432 ms in the...
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    @mjs513 - I think I understand what you are...

    @mjs513 - I think I understand what you are after. You want to draw on a page that is not being displayed in the background and after you are finished drawing, display that page.
    If I am right. To...
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    @mjs513 - @KurtE The RA8876 uses screen memory in...

    @mjs513 - @KurtE The RA8876 uses screen memory in this way:


    /*Page(image buffer) configure*/
    /*The maximum number of pages is based on SDRAM capacity and color depth and width and height of one...
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    Yes, Me too. I Just go my 3" Male/Female jumper...

    Yes, Me too. I Just go my 3" Male/Female jumper wires from Adafruit. This weekend I am going wire up the ER-TFTM101-1 display to the T4.0 and see if I can increase the SPI Speed. Not sure if I have...
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    That's great. The RA8876 chip has some good...

    That's great. The RA8876 chip has some good possibilities but can be tricky to use. Understanding the RA8876 manual is the other thing that took me some time. The terminology can be tough to...
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    That's awesome @mjs513:) I'm glad to see somebody...

    That's awesome @mjs513:) I'm glad to see somebody is trying to standardize the mess I made. I'll be glad to try and answer any questions you might have about it. And I will certainly do testing.
    ...
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    Thanks mjs513 - I completely forgot about that...

    Thanks mjs513 - I completely forgot about that thread. I will post there with any further work on the RA8876.
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    @defragster - Thank you. I'll start paying...

    @defragster - Thank you. I'll start paying attention to the compiler output for program memory size. I see what you are saying. Thanks:)
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    @MJS513 Not sure which other thread you...

    @MJS513


    Not sure which other thread you are referring to. Tried Searching for it. Guess I missed it:(

    Did any other of the sketches work? Specifically piptest? Very curious about the the...
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    1.53 Beta Arduino 1.8.12 T4.1 beta board under...

    1.53 Beta Arduino 1.8.12 T4.1 beta board under Linux MSC and MSC3 are both working the same as with the T3.6, T4.0 and T4.1. mscWavePlayer is working on the T4.0 with both MSC and MSC3 (Revision B...
  47. @caiannello - Is the SSD2828 the same one used by...

    @caiannello - Is the SSD2828 the same one used by the Techtoys device? You have my curiosity peeked on this one. I would really like to check this out but right now with the new T4.1 and doing my...
  48. You are right, a 10.1" display (ER-TFTM101-1) ...

    You are right, a 10.1" display (ER-TFTM101-1) without the SSD2828 (mipi bridge) and not a 7" bar style display has many differences. My code is based on the Ra8876_Lite driver published by RAIO....
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    @woodencase01 - Glad you got it working....

    @woodencase01 - Glad you got it working. Hopefully you are on to bigger and better things:)
    Thanks
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    @woodencase01 - I may be wrong here but make sure...

    @woodencase01 - I may be wrong here but make sure you have not uncommented line 37 in SD_t3.h.

    // This Teensy 3.x optimized version is a work-in-progress.
    //
    // Uncomment this line to use the...
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