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Maybe you have Serial.begin(9600) in your program? On Teensy, Serial.begin() tries to wait for the Arduino Serial Monitor to connect. It waits up to 2 seconds if your PC begins the USB detection process (called...

USB HID Device Info Program This Sketch shows information about plugged in HID devices *** You can control the output by simple character input to Serial *** R - Turns on or off showing the raw data C - Toggles...

Look at the xy() function in the OctoWS2811 examples. This is the one from the File example (in Arduino, click File > Examples > OctoWS2811 > Fire) // A simple xy() function to turn display matrix coordinates...

Look for them soon at Envistia https://envistiamall.com/collections/pjrc-teensy-microcontrollers

I would imagine you'd write the channels mask to the MCTRL CLDOK bits to zero the LDOK bits for all the timers you wish to alter. Then write your new settings to some or all of the 6 timing registers. Repeat for each...

Okay that is the last code I started with - but minor edit to remove 'warning' and (void*)i+1 for (int i=1; i<=threadCount; i++) threads.addThread(thread_func, (void*)i, threadStackSize); // stack alloc'd from...

Each square is really just the same thing as a 256 long LED strip laid out in a zig-zag pattern, as you can see from their diagram. The OctoWS2811 library doesn't care about the layout of your LEDs, it just provides a...

Doing some or occasional malloc from main thread seems to “unlock” the heap for malloc by the other threads, but I don’t think it’s meant to work that way, and it works only “accidentally”. It never makes sense for top...

MarkzP the savior. Thank you guys so much for all of your help!!!!

Whoops, the forums resized my image... You can see the full size image here: http://msgempire.com/images/Capture.JPG Thanks!

Cool, haven't looked in visits ... and gotta run now ... what diff made it change behavior?

If you run the last program I posted, you can see that all of heap can eventually be used even without a large initial malloc by main thread.

Or is the octo library only really working with strips, and not squares? I think the squares would probably give me a more consistent look…

Thanks, that’s great to hear! After a meeting with the museum they also want a big countdown on the wall. I think I will order 6 or so of these: ...

MarkzP the savior. Thank you guys so much for all of your help!!!!

I strongly suggest including a test setup for coding. I would look at https://forum.pjrc.com/threads/70264-EncoderTool as an example. A 2 by 2 or 2 by 3 setups on 1 or 2 breadboards seems the minimum for me for...

Thanks "Since querying all the encoders for changes would be a bit tedious, I use the callback onEncoderChanged which will be invoked whenever one of the encoders changed its value. " You could pass "this" as a...

That makes sense. I saw note for passing address, but didn't look into the prototype for expected ordering of the values.

Not looked deeper but: Problem seems malloc expects to own the RAM space as it understands it based on that first call setting the base pointer - and the main and threads have unique views with regard to stack and the...

I don't understand. What do you mean by "nothing magic"? In my testing, if I comment out the preliminary allocation from the main thread, it doesn't work. If I let it there, it works. Isn't it related to the first...

In my testing, there is nothing magic about a preliminary allocation from main thread.

One other thing I tested was to sometimes free the heap space allocated by the threads and check if new allocations were able to use the empty spaces left on the heap. As far as I could see, it works. So I think malloc...

Hello defragster and joepasquariello! I have been experimenting with your codes and making some small modifications to try to isolate the problem and find the root cause. Thanks very much for your help so far! :) I...

I'm assuming you're editing this line when you connect the wires to pins 18 and 19? if (!bmp.begin_I2C(&Wire2)){ // hardware I2C mode, can pass in address & alt Wire But I can't see your screen. Maybe...

It seems like even if it works, it's not going to work as expected when the stack pointer for all threads other than the main thread is below the top of the heap. Can you comment on that? One of your first suggestions...

I have been looking at the technical manual, but I still can't tell the best way to dynamically apply a phase shift angle (with constant frequency)

Something odd for sure. Seemed all 4 threads were doing Alloc with post #29 - then some change and only thread 0 and 4 made repeat calls. Then the change indicated in p#30 and then only thread 0 and 1 are active? ...

According to the header file: bool begin_I2C(uint8_t addr = BMP3XX_DEFAULT_ADDRESS, TwoWire *theWire = &Wire); I would try this: bmp.begin_I2C(BMP3XX_DEFAULT_ADDRESS, &Wire2);

I had the same experience. Made a small, valid change to a working program, and the program stopped working completely. What I think I see in the test results are that malloc() only works (for some undefined time) after...

Please read my last message...and follow the link and read.

Thank you, how do I go about installing it correctly and where exaclty?

Hi! Go here: https://github.com/DD4WH/audio-guestbook Scroll down to the section "Compiling the code" and follow the instructions 😀. Good luck and success! PS: check your sketchname for typo! Guest, not guist...

MTP_Teensy can be found at https://github.com/KurtE/MTP_Teensy

Thanks a ton! The mask fixed the issue for channels C & D! I knew it was some dumb mistake on my part. As for the phase shifting, I did see those resources, but it was my understanding that the Teensy 4.X boards...

Hey, I am making this aswell. I am currently stuck at another section; In the beginning of the code it says: #include <Bounce.h> #include <Audio.h> #include <Wire.h> #include <SPI.h> #include <SD.h> #include...

My guess is somewhere between 30-45 seconds. I did not time it

Thanks for your reply. Approximately how long should it take after releasing the button? Edit: I've got it now. It wasn't working with the 10000mah USB battery is was using. Solid red light remains for about...

Hold the button until you see the one led just blink and then release it, It should then show that LED lit up for awhile as it reprograms it, and then you should get the blink (the other LED) program on it running.

@KurtE Just gave your updated sketch a try and without turning off debug or changed data" $HIB:ff0d0000 type:2 min:0 max:255 Digitizer: &usage=100(in:FF000100), usage_page=ff00, value=0(0) Digitizer:...

Yeah, everything works when I have the wires connected to SCL and SDA (pins 19 and 18).

I pushed up a quick and dirty version: https://github.com/KurtE/lsm6-arduino-Teensy-I2C/tree/Wire12 That is for example with the example sketch: LSM6 imu; // Will use the wire object LSM6 imu(Wire1); // will use...

I have done a little more hacking since then, Including change @mjs513 mentioned. But also then doing some hacking for the longer version, which is still not right, but gives some more tools to help. That is...

Just tested it, my setup needs some 200ns delay to get a stable readout. Here the test code I used to read out the 3x5 encoder-array shown in #6. #include "Arduino.h" #include "EncoderTool.h" #include...

Have you thought about using the EVE4 controller with 5", 7" or 10" display? I've been using an EVE2 5" for years in my race cars, and have just moved to an EVE4 7" display with the teensy 4 (1026x600). More than...

Any Help or suggestion?

Looks like this should work. Adafruit's library is designed to work with any I2C port, so you shouldn't need to use "#define Wire Wire2" or edit the library to change "Wire" to "Wire2", as is needed with older...

The mask for the C/D FLEXPWM timers is ALT 2 (ref page 515) *(portConfigRegister(ChannelC)) = 2;//Maske; *(portConfigRegister(ChannelD)) = 2;//Maske; See https://www.nxp.com/docs/en/application-note/AN4485.pdf ...

Thanks for your advise. Will look into the mentioned library. Any idea how to get this talking to a script that produces the correct control messages to the DAW? About the "start small to get a feeling for it", I...

Just added: ftrias/TeensyThreads/issues/38 It was not giving threadsInfo on LAST thread. Something isn't working as expected? I added int* me in code below - output changed drastically and makes no sense - how does...

I guess I don't understand this part. In my test program (update below), the blocks are allocated in order from lowest to highest address, but with some failures among threads other than the main thread. Error pattern...

If all instances of Wire have been changed to Wire2 this could be removed: #define Wire Wire2 Has this been tested to work on Wire with the appropriate changes? > proper pullups and wiring? Some i2c Devices...

Good luck. Just make sure they don't overlap on ending timeslice with re-entry. What is the best way to enforce that? Semaphore/mutex/interrupts off?

Thanks again, defragster. I will test many allocs and frees from different threads and check the pointers to see where the memory is being allocated in the ram.

As noted p#11 the first caller to malloc() sets baseline ptr* brkval - that is the 'logic' behind the main thread alloc 'hack': if (__brkval == 0) __brkval = __malloc_heap_start; cp = __malloc_heap_end; if...

You are correct! That's the exact same behavior I was noticing. In my case I have tested with only the main thread + 1 created thread. Sometimes the thread 1 is unable to allocate memory, but if the main thread tries to...

Post some code which demonstrates the error(s). (Defragster beat me to it by 1 minute) Pete

Please provide a complete/short example showing incorrect function. If usage was in error forum may help clarify, if the code really is in Error then it needs to be corrected.

Thanks, Defragster. After some thought, I came to a similar conclusion. It looks like my code made frequent, unnecessary passes through this code and timing could well have made the difference. (There were many tests...

If I use 0x483, and recompile, Teensy Loader shows the following: $ ./prog_teensy41.sh Teensy Loader, Command Line, Version 2.2 Read "blink_slow_Teensy41.hex": 22528 bytes, 0.3% usage Found HalfKay Bootloader...

Setting this seems essential: InChar = 0; // Added to fix crash after updating to IDE 1.8.19 When called without any Serial.available() if the prior exit was with:: if (InChar == 10) It will enter that...

At @KurtE's suggestion I changed line 234 or so to <10 so it should look like this void Intuos5Controller::hid_input_end() { if (debugPrint_) Serial.printf("$HIE\n"); if (hid_input_begin_count_) { // now lets go...

Built the teensy_loader_cli and not sure if I am quite invoking it correctly. ./teensy_loader_cli --mcu=TEENSY41 -wv blink_slow_Teensy41.hex Unfortunately something is set up wrong in the vm. All I get is a...

still no side buttons. also i don't see my stylus buttons reported anymore in the flood of data... question: do you also get a huge amount of serial data when you don't touch the tablet at all? mine is sending out...

ok, i have finger tablet to serial interaction :) here is the output on serial monitor, when i touch it with my fingers: HPID(64): 02 04 02 90 A1 FA 62 03 5A 00 03 94 78 EA A9 03 6A 00 04 90 B5 DF 7B 04 62 00 06...

Thanks Kurt. I've solved the problem but it leaves behind a puzzle as to why my code ran, bug free, when compiled with 1.8.10. I've greatly simplified the culprit procedure below. Adding the final statement, InChar = 0,...

Opps - I hesitated asking the obvious ... are there any interrupt functions involved that should not be in FLASHMEM. The Teensy's 1062 has 32KB code cache - so maybe it can get away with it for some time if it stays...

Can't get the usb to stay connected in the vm. The changing modes of usb during programming are confusing the QEMU/KVM. I keep seeing the usb device disappearing. Do I use a) Teensy Ports /dev/ttyACM0 Serial...

Now I am feeling very stupid. After I was adding more unrelated code (for the PDP1) more functions in the Vectrex menu part started to freeze. So I decided to remove the FLASHMEM on all functions in this module. While...

I hope you can understand nobody can say specifically what the problem is with an unseen PCB. The best we can do to help you is offer some suggestions of tests to perform and explain what the technical meaning of those...

The Program signal was High before pushing it in my previous measurements but now after you asked me I checked again and the Program signal is low (tens of mV) before pushing it. what could be the problem?

22/28 that makes sense and is alright. Thanks for running through them!

malloc() will report that no memory is available if the requested allocation will collide with the stack, as defined by the value of the stack pointer at the time of the call to malloc(). With TeensyThreads, each thread...

Set up an Ubuntu 20.04 VM. Looking to attach the USB port. In $ lsusb, I see something showing up as Van Ooijen Technische Informatica Teensyduino Serial. Hoping that is the correct device to connect to. $ lsusb...

Here are the forks: https://github.com/01-BlackHawk-11/lis3mdl-Teensy-I2C https://github.com/01-BlackHawk-11/lsm6-arduino-Teensy-I2C What I had in mind was adding a variable that stores the wire address like...

Sparkfun posts their Teensy MicroMod Eagle files - not sure if that includes part numbers for the crystals?

Did you ever figure out the 4 signals? Need to do something similar for an H-Bridge.

Probing manually, all pins responded except 22 and 28 (RTS, CTS) on all three reflowed processors.

Are these the sensor libraries you're really using? https://github.com/pololu/lsm6-arduino https://github.com/pololu/lis3mdl-arduino If anyone is going to go to the trouble of editing these to properly allow...

As a simple solution you could use #define Wire Wire1 at the head of the .cpp files.