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  1. Thread: Qt for MCUs

    by Rezo
    Replies
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    700

    Im already using those libraries on the T4x, have...

    Im already using those libraries on the T4x, have been for the last 6 months. But they are simply an API to send commands to the display to draw lines circles strings etc.
    Qt is the layer that...
  2. Thread: Qt for MCUs

    by Rezo
    Replies
    9
    Views
    700

    1. For my needs, ILI9488 or HX8357 both...

    1. For my needs, ILI9488 or HX8357 both supporting 16bit (or 18 bit) color depth and a resolution of 480x320
    2. I have no idea, I have not gotten into the working parts of Qt, this is why I...
  3. Thread: Qt for MCUs

    by Rezo
    Replies
    9
    Views
    700

    I thought I would revive this thread as I just...

    I thought I would revive this thread as I just came across Qt for MCUs and now that we have the T4.1 with the option to expand both SDRAM and Flash - might allow one to utilize the Qt framework
    But...
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    Amazing! I remember the early versions of...

    Amazing! I remember the early versions of MegaSquirt - gosh that was like 13 years ago.
    But the entire ECU board and housing looks top notch!
    Perhaps you can also add in some form of dashboard...
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    I use two diodes as suggested by Paul in one of...

    I use two diodes as suggested by Paul in one of the guides. I used an TH diode last time, but will try the equivalent SMD version for a “cleaner” look
  6. Replies
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    That's what I did with the 2nd breakout board. I...

    That's what I did with the 2nd breakout board. I applied flux on the pads and a very small amount of solder to the tip of the iron (TS100) and ran across the pads.
    I then added more flux onto the...
  7. Replies
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    A quick update from my side: I got the display...

    A quick update from my side:

    I got the display to work, but it's quite unstable. At first, the pads/pins would start crackling and smoking as soon as I'd power it up, and this happened only on...
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    I ordered early June and it arrived in Israel two...

    I ordered early June and it arrived in Israel two weeks later with standard USPS shipping.
    But, I had ordered some PCBs from OSH Park (they ship from the same state as PJRC) in April, it arrived two...
  9. Replies
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    Yes, but without the GPU :D in a perfect world...

    Yes, but without the GPU :D in a perfect world the Teensy would handle that, but the same TFT, yes.

    I got to soldering the FPC connector to an Adafruit breakout board - my first time soldering an...
  10. Replies
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    I understand you - if you can get it to be...

    I understand you - if you can get it to be configurable in the constructor it will make config much easier for the user, but at the moment I think people are competent enough to uncomment that line
    ...
  11. Replies
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    I'm willing to try the 9488 just because it's a...

    I'm willing to try the 9488 just because it's a third of the price, has capacitive touch and they can be ordered as bare displays and not as a shield (I've designed PCBs to surface mount the T4.1...
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    Funny enough, I eventually used an Adafruite...

    Funny enough, I eventually used an Adafruite HX8357 display for my first prototype, but placed an order for the ILI9488 last week and it's arriving later on today!
    I'm looking forward to getting it...
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    23,893

    You're correct on the resistor, I found a dev...

    You're correct on the resistor, I found a dev board with a 230 in the circuit and the schematic did show a 22k resistor between 3v3 and Rs, and another 10k resistor between Rs and a digital pin for...
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    That looks quick! So you’re going to build a...

    That looks quick!

    So you’re going to build a new library to play back the GIFs, or will it be an extension library that utilizes the APIs from display driver libraries such as ILI9341_t3n?
  15. Replies
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    Can anyone suggest the best rout to implement the...

    Can anyone suggest the best rout to implement the following behaviour with the SN65HVD230?

    I want the transceiver to be in low power mode by default, which means I need to pull the Rs pin to Vcc...
  16. Joao, no need to apologize - I just spent the...

    Joao, no need to apologize - I just spent the night in the ER myself! I hope you are able to get things sorted out as soon as possible, and be back on track with no worries to care for!

    Thank you...
  17. Awesome stuff - thanks for bringing the Adafruit...

    Awesome stuff - thanks for bringing the Adafruit library to my attention.
    I ordered the 3.5" bare display with 50 pin FPC. I have some breakout boards to access all the pins easily and will wire up...
  18. @Ripper do you mind sharing how you got the FT...

    @Ripper do you mind sharing how you got the FT touch screen to work? The library you linked to has no examples
    I just ordered a few units and would love to get the capacitive touch working.
  19. I would suggest you try compile one of your...

    I would suggest you try compile one of your sketches and post the errors here - it will help troublshoot.
    Perhaps also state what environment you're set up on (OS, TD version etc) as it might be a...
  20. Might sound like a dumb question - but did you...

    Might sound like a dumb question - but did you make sure the selected board is an Uno and not a Teensy or any other Arduino board?
    20784
  21. Thank you! I’ll try run it in on Bootcamp and...

    Thank you! I’ll try run it in on Bootcamp and play around with it over the weekend!
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    I have bootcamp with Windows 10 installed - will...

    I have bootcamp with Windows 10 installed - will give that a try later on.


    Thank you for clarifying, I'll investigate further into it.
    Regarding the unclarity of the readme, I did copy...
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    Tried you suggestion - same behaviour as before :/

    Tried you suggestion - same behaviour as before :/
  24. @KurtE shouldn't the clipping rectangle be...

    @KurtE shouldn't the clipping rectangle be cleared after updateScreen() (added in red)?


    void setup() {
    tft.begin(40000000);
    tft.useFrameBuffer(true);
    tft.setRotation(2);...
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    I downloaded MTP from here...

    I downloaded MTP from here https://github.com/WMXZ-EU/MTP_t4
    And SdFat-beta from here https://github.com/greiman/SdFat-beta
    I downloaded usb1.h/.c from here https://github.com/WMXZ-EU/USB2 and...
  26. Replies
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    Anyone got this running on a Mac? I was able to...

    Anyone got this running on a Mac?
    I was able to (somehow) get the test sketch to compile after following the guide (was a little confusing TBH) on a T4.1
    With no SD card inserted the Serial monitor...
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    Thank you both! A big shout out to Tony and Kurt...

    Thank you both! A big shout out to Tony and Kurt who have been very helpful and provided me with a great basis and lots of tips.

    Mikey, regarding the Nextion display - for your application I think...
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    I finally got the PCB's from OSHPark in last week...

    I finally got the PCB's from OSHPark in last week after a 2 month wait (due to shipping restrictions) and assembled one.
    2073020731
    The PCB has a pull down buck converter to reduce 12v to 5v, which...
  29. Been up to some testing on an online C++ complier...

    Been up to some testing on an online C++ complier as I don't have access to a Teensy at the moment - will test the same code later on or tomorrow on a T4/4.1

    Here's the script im using to test the...
  30. I implemented the code above, calculating the...

    I implemented the code above, calculating the absolute value and updating the relevant area of the display if its equal to or greater than 0.1, but it seems to have really slowed down the rate of...
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    Thanks a bunch for the investigation so far! I...

    Thanks a bunch for the investigation so far! I think you've covered a ton of ground and your insights are extremely valuable to duff or anyone else who can take a deeper look into this.

    I did PM...
  32. Could you add an example of the ino file to the...

    Could you add an example of the ino file to the Github repo?

    I have PP on a Mac (latest version) but I don't think it supports developer mode - I guess I can only use this on a PC?
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    Wow, amazing work Kurt! I only just got started...

    Wow, amazing work Kurt! I only just got started on reading the user guide! :D

    You've clearly demonstrated that there is an issue with the SPI register upon wakeup from hibernate, Perhaps caused...
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    Thank Kurt. I’ll start reviewing the...

    Thank Kurt. I’ll start reviewing the documentation over the weekend and try understand how all of this works.
    Meanwhile I’ll have to let @duff take a look at this as he knows Snooze best being that...
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    Is there a legend that details what each register...

    Is there a legend that details what each register represents and so forth? No much info on the forum or Dr Google.

    If I understand, we need to get the word size changed back to 0x0000007, clear...
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    So this is just a simple sketch to try and drill...

    So this is just a simple sketch to try and drill down to what is causing the issue, which is somewhere in the SPI region.

    When you power up the T4 it goes through the setup as usual,...
  37. That's much cleaner. As mentioned before, I think...

    That's much cleaner. As mentioned before, I think the speed impact will still be a lot lower than rewriting and unchanged string to the display
  38. Replies
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    Yep, tested it before posting this thread. Also...

    Yep, tested it before posting this thread. Also added it to the HX library and got the same output in the serial monitor.
    What do the functions writecommand_cont and writedata8_contin the library...
  39. Replies
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    T4 SPI port register - how to reset it?

    I'm working on a project that requires CAN bus and SPI based display and I am currently using FlexCAN_t4 and HX8357_t3 which work perfectly together.

    Recently I introduced Snooze into the project...
  40. I think we need to convert everything back into a...

    I think we need to convert everything back into a float if possible as you need to set the cursor for each print if I'm not mistaking - could be a hell of a headache to code in.
    In my code I move...
  41. I've been thinking, to optimize performance even...

    I've been thinking, to optimize performance even more, for any text fields that aren't changing, you can compare the current value to its old value and decide if it requires updating. On integers it...
  42. I wish it was automatic :D You need to define the...

    I wish it was automatic :D You need to define the X,Y pointers and the W,H of the clipping rectangle. One thing that confuses me is the position it starts at is the opposite of the other graphic...
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    Just want to raise a possible issue with the HX...

    Just want to raise a possible issue with the HX library in conjunction with Snooze on a T4.0 using a digital pin as a wakeup interrupt.
    Snooze will put the Teensy to sleep sleep but the wakeup...
  44. Replies
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    So I spent the last hour doing some tests. All...

    So I spent the last hour doing some tests.
    All modes work on a T4.0 with no issues.
    So I suspect another library is causing the issue.. I first added FlexCan to Hibernate_all_wakeups and...
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    I've gotten around to testing the Snooze library...

    I've gotten around to testing the Snooze library on the T4.
    Its goes into sleep mode as expected, but doesn't wake up.

    Here is how I've set up the code

    #include <Snooze.h>
    // Load Snooze...
  46. If it helps applying draw functions in an easier...

    If it helps applying draw functions in an easier way than we have now, having to use setClipRect on each portion of the screen we want to update, then defiantly will make the implementation process a...
  47. I would be happy to see something that utilizes...

    I would be happy to see something that utilizes the extra RAM on the 4.1 assuming it does significantly speed up writing to the display. The questions is how much will it improve performance, and...
  48. Replies
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    Can you specify which model Mitsubishi you have...

    Can you specify which model Mitsubishi you have and what market (US,EU)?

    If I understand correctly, you are receiving data without actually requesting anything from the ECU?
    The OBD2 PID's you...
  49. Replies
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    Happy to try and help with my basic knowledge of...

    Happy to try and help with my basic knowledge of vehicle oriented CAN - what are you trying to extract from the data?
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    Can anyone shed light on which mode in snooze is...

    Can anyone shed light on which mode in snooze is parallel to stop mode?
    I have tested an implementation of stop mode with wakeup from
    Inturrupt in FlexCAN_T4 but when the T4 wakes up it continues...
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