KurtE
Reaction score
90

Latest activity Postings About

    • KurtE
      Probably should be part of your other thread: You might look around the net for information on PS2... Like: https://karooza.net/how-to-interface-a-ps2-keyboard Looks like Paul has a library for decoding PS2 keyboards...
    • KurtE
      If you look at the T4.1 card, it is pretty easy to hook up both USB Host and USB Device. The Device pins duplicate what is in the USB connector that you connect up to your PC. So yes you can connect up the keyboard to the teensy using the...
      • 1709214979253.png
      • 1709215149608.png
      • 1709215619897.png
    • KurtE
      KurtE reacted to PaulStoffregen's post in the thread Teensy 4.1 or Arduino GIGA R1 with Like Like.
      Specifically regarding Arduino Giga and software, it's pretty clear Arduino has focused on developing certain features. The situation is similar with Teensy, but largely a different set of features. Depending on your perspective, it's easy to...
    • KurtE
      KurtE reacted to wwatson's post in the thread Teensy 4.1 or Arduino GIGA R1 with Haha Haha.
      I saw that as well :unsure:
    • KurtE
      KurtE replied to the thread Teensy 4.1 or Arduino GIGA R1.
      Different reasoning for maybe why giga on Arduino forum 😉 https://forum.arduino.cc/t/lets-discuss-the-arduino-giga-vs-the-teensy-4-1/1209984/16?u=kurte @PaulStoffregen - hopefully they don't know something we don't know... :D
    • KurtE
      KurtE reacted to Rezo's post in the thread Call to arms | Teensy + SDRAM = true with Like Like.
      Meanwhiles, for anyones enjoyment, here is a video of a music player demo running on LVGL v9.0.0 I think there is a lot of room left to optimize. It has two screen sized frame buffers (1.3Mb each) that LVGL writes into, and the eLCDIF reads from...
    • KurtE
      How do you have the backlight hooked up? Like what they show on product page https://www.pjrc.com/store/display_ili9341_touch.htm could up the ohm of resisto. Could hook that pin to io pin and control using pwm…
    • KurtE
      I will try to get back to trying it on this board. Sort of a PIA at times to hook up all of the wires in a secure enough way. So I much easier playing using the other boards. Did find using my camera shifter boards I did during the T4.1...
      • 1708731548709.png
    • KurtE
      🤔I have not seen the problem of using the 8MBtye SDRam on the GIGA for the camera to read into. But when I looked at their schematic their SDRam setup looks very different than what I believe you are doing on these dev boards. That is they...
      • 1708641507400.png
    • KurtE
      KurtE reacted to mjs513's post in the thread Call to arms | Teensy + SDRAM = true with Like Like.
      Just by way of an update @KurtE got the OV7670 and OV7670 video working using the micromod as the test platform. If you try it on the SDRAM something strange is going on. If you use DMAMEM for the framebuffers image is perfect if you use...
    • KurtE
      KurtE replied to the thread Help with Teensy Loader.
      Not something I want to touch. if i were easy to do then maybe Paul would integrate it into teensyloadercli and then others could then migrate it into different apps like TyCommander
    • KurtE
      KurtE replied to the thread Teensyduino 1.59 Released.
      Not sure if to post here and/or on Arduino. Ran into build today that died with: internal error in mingw32_gt_pch_use_address, at config/i386/host-mingw32.c:192: MapViewOfFileEx: Attempt to access invalid address. Had this before, ended up...
    • KurtE
      Forget to ask/mention in previous post. When you said before each buffer write: not sure what you meant here. That is what "Before" if it was before your code updated the buffer to the new contents. then flushing before this would not help. if...
    • KurtE
      For what is worth, back in T4 beta cycle, I was running into issues with the caching getting in the way. Sometimes the cache flush and/or delete could help, other times a royal PIA... That is why I found it sort of amusing that we used the...
    • KurtE
      KurtE reacted to Rezo's post in the thread Call to arms | Teensy + SDRAM = true with Like Like.
      @PaulStoffregen I have been playing around with the eLCDIF and a 24bit 800*480 RGB display using my experimental eLCDIF_t4 library My first experiment was to display a static image loaded into SDRAM - that worked fine. My next experiment was to...
    • KurtE
      KurtE replied to the thread Firmware.hex File.
      Sorry, I have no idea, Could be wrong, but I don't believe that these use boards made by PJRC. You might try asking up on some forum, geared toward the Ender 3d printers. Again good luck
    • KurtE
      KurtE replied to the thread Firmware.hex File.
      As this thread is almost 4 years old now, might help others to help you, if you described your setup: Are you running VS on a MAC? which versions of VS and type of MAC, OS, ... Which teensy are you trying to build for. Note: your post is the...
    • KurtE
      Decided to hold off on that for now... Did lay out quick and dirty semi-shield for the Sparkfun ATP board Slight downside is that two Teensy pnis are not available (22, 28), but... The only real components to solder in are the SDIO connector and...
      • 1708176634283.png
    • KurtE
      KurtE replied to the thread Magic numbers in usb_desc.c.
      Any time I start looking through things like, this, I end up first looking up at the USB in a Nutshell chapters https://www.beyondlogic.org/usbnutshell/usb5.shtml This describes many of the descriptor formats: For example the strings at the end...
    • KurtE
      KurtE reacted to mjs513's post in the thread Call to arms | Teensy + SDRAM = true with Wow Wow.
      Finally got the HM01B01 camera working again with Teensy. So hooked it up to the SDRAM board using EXTMEM for the Buffer for still images. Did find that if you hook up a display best to use pins 0/1 for dc/rst if you are using 9/8 for other...
    • KurtE
      Go for it. I believe we gave links to all of the cameras you can order from Arduino, like the 7675 https://store.arduino.cc/products/arducam-camera-module Which also shows the other 3... All you need to do is to hook up something like 16 jumper...
    • KurtE
      Keeping fingers crossed it works for you. As the tutorial you linked to shows (retired). I believe that library is no longer updated and probably had a really old version of Adafruit_gfx as part of it.
    • KurtE
      Sorry, I am sort of lost on this one. Which example sketch are you using? If for example I try the graphicstest of the Adafruit ST7735 and ST7789 boards library, it compiles just fine for the Teensy 4.1
    • KurtE
      As far as I can tell, the only real changes they made to their version is to add unicode support... My fork of it with LLA support does not have that, but works fine for me so far with my HLA, which works for me to filter the data down to what...
    • KurtE
      KurtE replied to the thread Need advice on PCB manufacturers.
      As mentioned before, for smaller boards, I use them. For larger boards I have used PCBWAY... For example with the board I am looking to maybe do. I modified it slightly this morning as I found the length of the board was something like 100.3mm...
    • KurtE
      KurtE replied to the thread Need advice on PCB manufacturers.
      Sorry different board. That was one I did for R8875/76... With the T4.1 and currently with storage chips with the other scocket...
      • 1707774073596.png
    • KurtE
      KurtE replied to the thread Need advice on PCB manufacturers.
      Looks good. Wondering about any suggestions for partially assembling a board. I have done a couple with PCBWay which has worked out OK: But last time was about 2 years ago. With my current main MMOD test board: Where I had them do most of the...
      • 1707770507866.png
      • 1707770971810.png
      • 1707771024767.png
    • KurtE
      KurtE reacted to wwatson's post in the thread Need advice on PCB manufacturers with Like Like.
      I want to thank everybody for the advice given. I chose OSHPark. Everything worked out without any problems. I just received my 3 boards and populated one of them (barely, shakey). Hooked it up and it works:D Thanks again for the help.
    • KurtE
      Sounds good, I would suggest that you might make the changes and try it out. And then if appropriate create a Pull Request into core and see if/when Paul will pull it in. But still need the same stuff as we mentioned for DMA buffers aligned to...
    • KurtE
      KurtE reacted to jmarsh's post in the thread Call to arms | Teensy + SDRAM = true with Like Like.
      malloc() already guarantees 8 byte alignment. It's defined this way in the C standard - any dynamically allocated memory must have alignment suitable for any native datatype e.g. 8 bytes for a double. smalloc is deficient in this regard. And...
    • KurtE
      FWIW - I believe we should use the KISS strategy and in this case change as few system things as possible. That is with EXTMEM or others who may use the sm_malloc code, I would probably avoid making changes to the underlying sm_malloc...
    • KurtE
      Quick update on the MicroMod board update, that I am not sure yet if I will order yet or not... I did not use the pass through pins for the camera, as, two rows implies you can not easily connect from either side with same object... But did...
      • 1707686595256.png
      • 1707686758705.png
    • KurtE
      KurtE reacted to Rezo's post in the thread Call to arms | Teensy + SDRAM = true with Like Like.
      I've started working on a little eLCDIF library: https://github.com/david-res/eLCDIF_t4 It's FAR from done, FAR from something functional, but I only started a couple hours ago. I'm not making this super fancy or super flexible - I'm making the...
    • KurtE
      KurtE replied to the thread LIN bus 2.1, working example?.
      Sorry never used it... Have never sed LIN bus. I changed to allow a two step startup as per some other thread...
    • KurtE
      KurtE reacted to mjs513's post in the thread Call to arms | Teensy + SDRAM = true with Like Like.
      I agree wholeheartedly with that :)
    • KurtE
      KurtE reacted to Dogbone06's post in the thread Call to arms | Teensy + SDRAM = true with Like Like.
      Let’s make both work? Sort of a library that can work both with FlexIO on the Micromod and the MIPI CSI. Or two seperate libraries :D
    • KurtE
      Thanks, the keyword, I was missing was pass through... Found some samtec ones at Digikey. :LOL: yep Note: 8 of them need to be contiguous for D0-7 and then two others for Pin clock and HSYNC I too, except - Except would be nice, to have some...
    • KurtE
      On the GIGA board they show it in the schematic like: So far did not find anything 21TW-247 They show the same on the GIGA Display shield. On their interactive display of the board, they show it as: I know I have seen similar type connections...
      • 1707502808863.png
      • 1707503186150.png
      • 1707504215036.png
    • KurtE
      I am sort of torn on a lot of this stuff. That is I like what you are trying to do. But I would be far more interested if for example Paul was building a Teensy 4.x with these features. Then I would be all in. For example should the camera...
      • 1707498578816.png
      • 1707499637018.png
    • KurtE
      KurtE reacted to Dogbone06's post in the thread Call to arms | Teensy + SDRAM = true with Like Like.
      Make sure Rezo and KurtE has that in mind when making the pin-list. Everything they put on the list I will add. 😄
    • KurtE
      KurtE reacted to Rezo's post in the thread Call to arms | Teensy + SDRAM = true with Like Like.
      Great success! Swapped the color order on the pins, so its wired B0-7, G0-7, R0-7 on LCD_DATA0 through LCD_DATA23 pins and it looks great! So that confirms the color order on the eLCDIF output is BGR and not RGB
    • KurtE
      KurtE reacted to Rezo's post in the thread Call to arms | Teensy + SDRAM = true with Like Like.
      Here's a quick update from me: Got some 5" and 4.3" LCDs here, 800*480px, 16.7M colors @Dogbone06 sent over some Adaftuit 40 pin lcd breakout boards which arrived on Monday, got to wiring it up day before last, and started testing. Consulted...
    • KurtE
      KurtE replied to the thread Teensyduino 1.59 Beta #6.
      I decided since I saw the Unexpected EOF on one of my board updates yesterday, to create an Arduino forum thread: https://forum.arduino.cc/t/arduino-2-3-0-unexpected-eof/1221459 As maybe there is an issue they need to be aware of.
    • KurtE
      KurtE replied to the thread Teensyduino 1.59 Beta #6.
      Note: I believe I saw the unexpected EOF message earlier today as well, but it was on one of the Arduino board updates MBED something (3 different ones updated, don't remember which one). Note: I have also had a sketch open up Read only today and...
    • KurtE
      So far not much to film...Still trying to get things to work reasonably one frame at a time. As for moving it around to scan. I am having a hard enough time with something like 16 wires on the connected to the camera, going to Devboard, where I...
    • KurtE
      KurtE replied to the thread Teensyduino 1.59 Beta #6.
      Maybe good day to release :D it as Arduino just released 2.3.0 As well as board updates for several boards.
    • KurtE
      KurtE reacted to PaulStoffregen's post in the thread Teensyduino 1.59 Beta #6 with Like Like.
      FWIW, I was sometimes (rarely) also seeing that on Linux, but could never make it happen on MacOS. Going to install on all 3 and do a big round of testing this morning!
    • KurtE
      Maybe. Not sure how to change or the like. That it is why, I prefer to do more Random testing like this. We often find issues, that were not uncovered using standard tests. I have not run into this yet... But have in the past. Also have in...
      • 1707317136718.png
    • KurtE
      We are using the camera in RGB(565) mode, We have the camera outputting DMA from FlexIO (I think only using one shifter right now). The camera returns the 16 bits, in byte swapped order, so we have a quick loop to swap them: //byte swap...
    • KurtE
      KurtE reacted to mjs513's post in the thread Call to arms | Teensy + SDRAM = true with Like Like.
      @KurtE and I have been testing an OV7670 + spi displays (ili9341 and 9488). While testing the camera using extmem was getting what I would call halo effects: Switching to the pixel buffer in DMAMEM that affect clears up drastically. Maybe...
  • Loading…
  • Loading…
Back
Top