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Interesting project, where can I find more details?

Yes, it appears that you have had a positive experience identical to mine, which has been that, when I2C audio control is being utilized, everything plays nicely together with the T4.x processors communicating over a shared hardware serial...

I tried some full sized images, 800 x 480 in 24 bit packed format. Not using the pixel pipeline. The fastest i could get was: Image in SDRam, reading from SDram then copying into the Backbuffer on SDRam. 13.9 milliseconds Image saved to...

I tried some full sized images, 800 x 480 in 24 bit packed format. Not using the pixel pipeline. The fastest i could get was: Image in SDRam, reading from SDram then copying into the Backbuffer on SDRam. 13.9 milliseconds Image saved to...

I tested data transfer via a serial port on the Teensy with Audio (without resistors or capacitors). Teensy4 (slave) receives data from Teensy4.1 (master) via the serial interface. This works with audio and without any transmission errors :)

I tried some full sized images, 800 x 480 in 24 bit packed format. Not using the pixel pipeline. The fastest i could get was: Image in SDRam, reading from SDram then copying into the Backbuffer on SDRam. 13.9 milliseconds Image saved to...

calling Serial.println() insures that _write is defined.

Try with framework = arduino instead of framework = Arduino

After some hours I managed to solve the problem on the Arduino IDE (v2.3.6) and can now get my project to compile there. However, I still can't get the corrected version of my code to compile on Vscode. This is y Platformio.ini: ; PlatformIO...

Can the Teensy: — act as a USB host — connect to a UAC device — send and receive ASCII or Binary with this device (Not necessarily MIDI format)

Yeah I don't need a Teensy or wasn't even that familiar with them. I heard of them but that's about it. I just figured a community forum like this would be able to tell me more or guide me to what I needed. I apologize for being a bother on a...

calling Serial.println() insures that _write is defined.

It's not the warning I'm worried about. It's the compile error below the warning.

To be fair, I did say that I have not built this board yet. However, I did compile the code and didn't see anything like that. I will ensure that it is pointing to the correct files and try again. Did you get anywhere with this in the meantime?

CrashReport was empty. No more ideas... Then I took a microscope and examined the PCB. I seem to have found a problem. Due to the very narrow spaces between tiny tracks and microscopic Cu dust left after etching in some places, the resistance...

Those are my own measurements made in programs based on the same logic from TeensySDIOLogger.

The warning in your little atof() program just means that you are computing "x", but not using it anywhere. The program below uses "x" in a print statement, which also resolves the missing _write(). I haven't run this program on 3.2, but I'm...

Randomly getting this error message. (Yes randomly, changing random things in the source causes it to come and go.) Here's the error...

I experimented a bit and found that a 4.7K pull-up resistor on the master and a 1K resistor on the CLK line to the slave produced the best results. I also soldered a 22pF capacitor to CLK and GND on the slave. The capacitor should have very short...

I don't remember reading these values in the examples but it's really interesting to keep in mind ! 1MB/s would give approximately a sampling rate of 6.5kHz with the timestamp (%10lu) and the 15 floats (%09.4f) which is more than enough for me...

Can the Teensy: — act as a USB host — connect to a UAC device — send and receive ASCII or Binary with this device (Not necessarily MIDI format)

Assuming the rest of your code is okay, try using two pins that are both on the same FlexPWM module and sub-module. I think that would give you best possibility of synchronization. For example, pins 6 and 9 or pins 7 and 8, as shown below. Please...

Whilst I think about this "(100ms, 200ms, up to 1000ms)" is glacial for a Teensy at 600MHz. Are you saying that you don't want/need to use a Teensy but want us to specify a board to use with your PLC?

Pro tip: wrap code using the “</>” button for better formatting.

Pro tip: wrap code using the “</>” button for better formatting.

Hi, I'm working on a project that need to generate a 10MHZ and PPS signals,buts with phase sync. I accomplish to generate both signals, but cant make it sync. This sis my code: #include <Arduino.h> #include <eFlexPwm.h> using namespace eFlex...

I am designing a large control system for a series of conveyors. This system have approx. 18-22 Emergency Stop buttons that are spread out over the entire system. These E-Stop buttons are illuminated with an LED. I realize most systems (and...

If you are talking about Arduino IDE builds. There are issues with the has include... There was an issue I created a long time ago, that then was moved to the CLI... https://github.com/arduino/arduino-cli/issues/1650 That is if your sketch...

Sure, here's one. NOTES: SCR trip voltage is 400mV, you may need to adjust R1 to a lower value to decrease sensitivity. volts D1 R1 trips at 3.3v 1N5333 60K 3.49V 5.0v 1N5228 60K 6.09V

Please show us your code/program. Perhaps you are using code specific to Arduino boards. I assure you that the Teensy family can be programmed in the Arduino environment.

Perhaps it would help if you describe what you are trying to do, I know you want to read inputs and control some outputs but you have not said anything about time for readings/switching etc. Please describe the problem you are trying to solve or...

Yes, I’ve done a lot of benchmarking on this, and as long as your data rate is well below the max of about 20 MB/s, calls to write() return in less than 5 us, which is fantastic. A number that’s easy to remember is 1 MB/s with only 1% of CPU. My...

I have been trying to compile a project for a Teensy 4.1 board. I come from an Arduino background and my project compiles and works fine on an Arduino AVR oard such as a Meg2560 or Uno. When I try to compile for the Teensy 4.1, I get an...

Yes, I’ve done a lot of benchmarking on this, and as long as your data rate is well below the max of about 20 MB/s, calls to write() return in less than 5 us, which is fantastic. A number that’s easy to remember is 1 MB/s with only 1% of CPU. My...

I guess I'll have to design one then... and get it built.

I understand, thank you for the help.

VID and PID are defined at the device level, not the interface level.

Yes exactly ! I spent a few days gathering informations on the best practices to log on a SD card, especially at high rates and finally based my code on this example and it's working like a charm !

That uses ModBus, it says it in the title.

I wanted to mention that the way you’re doing the SD logging is great. Did you start from the TeensySDIOLogger example? I always point to that as best practice for logging to SD.

#elif defined(USB_KEYBOARD_RAWHID) #define VENDOR_ID 0x16C0 #define PRODUCT_ID 0x0482 #define RAWHID_USAGE_PAGE 0xFFAB #define RAWHID_USAGE 0x0200 #define MANUFACTURER_NAME...

I would think you should be able to. That is for each of the USB_TYPES there are defines in usb_desc.h for them. But my guess is that you might need to provide your own PID/VID. And by doing so, you may need to provide an appropriate udev rules...

Maybe this is unrelated to Freddie's the issue, but I have recently tried to use __has_include in one of my libraries and spent a log time trying to make it work. The code was something like this: #if defined(__has_include) #if...

I dont want a PLC IO board that communicates via Modbus or whatever. I need a board that allows me to apply 24vdc to input 1,2,3,etc. and output 1,2,3,etc. energizes a mosfet or solid state relay that I can run 24vdc through. Anything out there...

I will second what @mjs513 mentioned. That I have not found any way to use the different variations of the SDFat library with each other. For example if you install the main SDFat library from either the Arduino Library Manager or directly...

Hi everyone, Is it possible to use separate PIDs (Product IDs) for keyboard, mouse, and other HID devices when using the Teensy 4.0? I'm trying to implement distinct USB device profiles and would like each to be recognized independently by the...

I will second what @mjs513 mentioned. That I have not found any way to use the different variations of the SDFat library with each other. For example if you install the main SDFat library from either the Arduino Library Manager or directly...

Thanks a lot!. This is exactly what I missed - crash report. Did not think few lines of a scetch could help as symptoms are quite clear and hoped someone had that before. I'll get back!

@merrickMilo Unfortunately there is no way that I know of that you can use both at the same time without reworking the adafruit library which is probably not easy. Like changing the name of sdfat.h to sdfat_ada.h in all files in the their...

It would be much easier to provide specific help if you would post a complete sketch. This would allow others to load & compile your sketch locally, as well as to evaluate your complete sketch for errors, etc. Without this, it is almost...