Activity Stream

That's cool! Thank you all guys!

Thanks for the input. I played with the sine wave a bit by itself and in combination with other effects but still didn't feel like I was zeroing in on an acceptable Vader sound. That Dalek megaphone is pretty slick...

OK, that's what I figured. Thanks

Hi Paul, that makes a lot of sense for PTA0-PTA3, there's no reason to access those pins. Is PTA4 used by the Teensy Core? All of the ARM documentation I've seen show it as NMI and configurable to a standard GPIO. I...

Happy ending: latest Arducam library supports Teensies (it would not build before). But, there's still a bug (easily fixed) on Arducam.cpp which prevents the camera module from working (SPI error). Fix: Arducam.cpp...

After testing out the MCP23017 attached to the T3.6 while the T3.5 was accessing it, I decided to attach a MCP23S17 (SPI) variant to the Teensy 3.2 node on the network. Here's the loop code on the T3.5 to talk to the...

All 3 of my T3.6 seem to work at 256mhz (including early acrylic beta unit). Running linpack 100x100 float with Fastest, getting 41.1 mflops.

Yeah, My bad i took "test" version of the code. I did some changes to be sure about issues. Btw now my topic is updated to correct code ;) Thanks anyway :)

UPDATE: I tested the same FastLED sketch that I tried on the Arduino UNO on the Teensy, and the problem persists. It seems to be a hardware related problem on the Teensy's side, but I tested the Teensy on a WS2812b...

if (button4.fallingEdge() && button5.fallingEdge()) { Keyboard.press(KEY_SPACE); Keyboard.release(KEY_SPACE); } Shouldn't you KEY_UP instead of KEY_SPACE for 4 and 5? and now arrows: UP (Button 4 & 5) DOWN...

I have 4+1 out on my desk - all connect and upload and work the same for Dhrystone. <edit>: Forgot the acrylic beta unit that works as well ( that uses the different pinned MCU - and olde USB connector ) Compiled...

… :mad: Still never funny …. :cool: Windows is the best! :o Though my machine has shown a couple of anomalies since I got the 1809 Oct release - not related to why they say they pulled it though … Paul- re post #18...

Wow... Good opportunity for a poll. As far as I know so far, it works on every Teensy 3.6 I know of. But are there some that may not run 256MHz sucessfully?

You can have a look at a Makefile I use here: https://github.com/bolderflight/RAPTRS/blob/master/software/Makefile It's cross building more than just the Teensy software, but if you follow the 'FMU' and 'NODE'...

Pretty sure this would happen on Mac and Linux too, if you force quit or "kill -9" the java process. I rewrote teensy_ports for 1.44, using stdout rather than a localhost socket. It's no long able to detect when the...

VisualTeensy:https://forum.pjrc.com/threads/53604-Compiling-Teensy-Sketches-with-VisualCode-(Win10). It does not even need Arduino installed, uses vsCode as editor and generates a standard makefile for building...

New update! Aside from including Wire capabilities, I2C_T3 support has been added to CANquitto as well. An example of which is: node123.Wire.begin(I2C_MASTER, 0x00, I2C_PINS_18_19, I2C_PULLUP_EXT, 100000); SPI...

I wouldn‘t have mentioned the verbose output if I had not considered it being useful. I‘m sure that you saw already the definitions in Teensyduino‘s boards.txt file, so you‘d know how to put everything together.

The Teensy has enough RAM to even double buffer the OLED which can speed things up. In terms of CPU, you need much more to explore its limits, always optimized, thoughtful, and purposeful coding as a prerequisite....

Thank you for your quick answer. I was looking at that audio codec. So in your opinion a setup with Cirrus 4244 on I2C+I2S, OLED 128x128x16bit on SPI should not be a big problem for a Teensy 3.6? I mean not to much...

Thank you the very quick answer. I am wondering if I could just reverse engineering the verbose output of Arduino IDE or maybe Teensyduino makes some other operations on top of it (I mean something not logged in the...

Most modern audio codecs use two busses in parallel: I2S for audio with high bandwidth and I2C for command & control with low bandwidth. I‘ve never seen one transporting audio data over I2C since even in fast mode plus...

An example makefile comes with the Teensyduino installation. And you might do a few compiles with verbose in the Arduino IDE, using different optimizations to see the different command line parameters for the compiler...

The logical consequence would be dropping Windows support... No, just kidding... :cool:

Not sure what to do with this - I just saw it in Task Manager - no idea how it got there? I'm on Newest ( now pulled Win 10 1809.55 update ) with IDE 1.8.7 and TD 1.44 - except it is Frank_B's core for 256 MHz T_3.6. ...

VGND as its name says, is a virtual GND, only for the headphone output with a DC offset of about 1.7V to save the huge output coupling capacitors. By connecting VGND to GND, you will short these 1.7V and put the...

Undecided, but I definitely will not merge anything that accesses PTA0-PTA4.

IIRC these SD pins were given numbers when KurtE made a PCB adapter for the SD slot and wired to them during K66 Beta - the numbers escape me though: perhaps #'s 58-63:

I'd bet Per knows the answer. Too bad he's not on this forum. If you post on Arduino's forum he'll almost certainly see your question. If you post over there, maybe put a link to this thread in your question, so...

Classic buffer overflow bug. The array is only 7 items. When you write to the 8th location, you're overwriting whatever other info happens to be in the memory after the array. Not good.

When you ask a question about a particular library or example, please be specific with a link to the exact code, or a copy of the code if it's not readily available on a website. I have published hundreds of...

There are AVR Teensy units in the 'Teensy' source tree, but that is code in the Teensy3 ARM family of the PJRC products. The Actual hardware serial ports for ARM Teensy3 family each have their own file Serial# where...

I posted a quick shout-out on Twitter, linking to this thread. :) https://twitter.com/PaulStoffregen/status/1053666670760288257

is not safe. Pete

Hi guys! First of all, thank you so much for your answers, and secondly, my apologies for getting you back late. Sorry. I really appreciate your answers despite the forum is not for AVR microcrontrollers. With...

Good, I'll try that.

The Box-Muller algorithm is useful because it can be use to generate many kind of distributions aside from the Normal law. However, for Gaussian random variables, I think the best method is to use the one described in...

Paul, if we agree on an extended pin numbering scheme, would it be possible for us to pull-request this and have it added to the core?

Maybe this helps visualize things, I added undefined signal pins in red and the Teensy 3.6 pin numbers. MK66 Pins Teensy 3.6 Pins PTA0 N/A Programmer / JTAG PTA1 N/A Programmer / JTAG PTA2 N/A...

FWIW, here are coremarkish numbers for T3.6 with Faster optimization. The 240mhz and 256 mhz were done today, the other data points are from 2016. from earlier post

I've had this same error, same implementation as original post, and also using the windows 10 store install (but my error has been intermittent). Today I realized that if I try to compile an edited sketch without first...

Paul, thank you for having taken the time to reply. Although it means that I might most probably not create an universal PCB layout, it’s better to know now than later. I have actually already moved the I2S signals from...

i updated again.. the matrix declaration is wrong and needs to be ROWS not COLUMNS I think. why is the 4,1 there? Adafruit_NeoMatrix matrix = Adafruit_NeoMatrix(32, 8,4,1, PIN, NEO_TILE_TOP + NEO_TILE_LEFT ...

no only the top matrix is doing some strange scroling but the text is not readable. #include <Adafruit_GFX.h> #include <Adafruit_NeoMatrix.h> #include <Adafruit_NeoPixel.h> #ifndef PSTR #define PSTR // Make...

I've updated it. try that

If you're looking for this to run optimized, might be a good idea to change sqrt() to sqrtf() and log() to logf(). Normal sqrt() & log() without the extra "f" use 64 bit double, which is much slower than 32 bit float.

That would likely work. Seems likely you'd use 2 diodes, so you can connect a coin cell to the other diode.

The short answer is no, nothing is really finalized. In some sense, it won't be truly "final" until we're shipping the actual products. I'm a bit reluctant to share too much at this stage. Months ago, I really was...

Thans Gibbedy, one line is working. But i put i put the 32x 8 matrix together as a square. So i have now 32x32 pixel. All the maxtrixes are connected in a row. I would like to drive it over on pin. The text should...

OK thanks. Got it running it seems. It seems that I have to use: // Get data block = receiveWritable(0); // Code for processing here // { // }

Thank you Paul. I don't suppose if I were to perform these changes before fabrication the board would behave properly? 1. Seperate VBAT from the 3.3V (leaving the 3.3V to take its present path) 2. Add a 0.1uF...

... Off topic indeed. I updated the local 256 MHz for 128 MHz bus and it compiles.

Annoyingly it seems to be fine on my desk today without the Hbridge board and the loco. you may however be on the right relying on uint8_t num = myIn.available(); not returning more than 6 might not be safe. ...

If numchans is 7 or greater, this statement: rcvals = myIn.read(i); will overwrite past the end of the rcvals array. Turn on the code that runs printrcvalues and look at what it prints just before the code...

Any progress on this? I was hoping to do something similar!

As Paul mentioned in several threads recently, most of his time goes actually into T4 development. Is there already a final pin layout, now? I’m asking because I’m actually working on a PCB with a 24pin socket for a...

that's a mostly hardware independend program which does not know about different time-sources (hey, 1984!) But it can be edited... an external clock would be best. But I suspect the numbers are too small to reflect...

Haven't looked at that for some time - what is the simple answer? I suppose it is string_len * fixed char width?

That was intended - anyone running it would have the same binary to show results - only change would be the clock/crystal and cycles/sec - with a couple of fixed OSC0_CR to see if it makes a difference or points to a...

So, you fear that this stupidity will be preserved for ever? I’ll already close the thread, if you really want to have it deleted, PM me.

Thank you :) Edit: I have updated the program in post #18.

Cool seeing it with the lights on the megaphone, nice touch. When I did the dalek voice coder, I kinda liked the triangle waveform sine1.begin(WAVEFORM_TRIANGLE);

It really is too bad you can't delete stupid threads, I can't believe it took me this long to figure this out. :(

printf of float/double doesn't work for "smallest code" optimize. Serial.println(Dhrystones_Per_Second); will reveal the result.

On the audio library website, there is a design guide and rules how to create new audio objects which will seamlessly integrate with the audio lib. Just wrap your code into that.

With the GNU Arm Embedded Toolchain, Version 7-2018-q2-update Released: June 27, 2018 it is, of course, faster: 1136363 Dhrystones

You should remove this from your loop: while (usbMIDI.read()) { } Please put the code in CODE tags, it makes it so much more readable.

OK, got it. Problem was company firewall. Thanks.

Here it is :) A HEX-File would run on a specific Teensy model only. I dont' remember where I found it. The first version of "DHRYSTONE" is from 1984. Nowadays, DHRYSTONE is not a good benchmark (Google...). But...

Give it username anonymous and an email address as the password. If that fails, I'll post my version. Pete

Thanks, but that ftp site is asking for username / password. Do you have a link to your implementation, or can you post it?

I have some code which implements the polar form of the Box_Muller transform. The original code was from here. It is not optimized except that I use it on a T3.6 which has an FPU and therefore the code is fast enough,...

You are executing the Chirp function from within an interrupt which isn't a good idea. Try replacing the loop() and Chirp() functions with this: volatile uint8_t play_chirp = 0; void loop() { if(play_chirp) { ...

That's a good suggestion. I did try different combinations of power and ground pins, but the red LED told me they were all working on the clone. Oh, well. I'm sure the adapter board will work out of the gate, and...

I have a bookshelf filled with ready-to-go hardware for most of the commonly used Arduino libraries, so a test just running the examples is quick & easy! This really should be able to work with that length wire, as...

Another update for anyone reading these. There seems to be a small glitch with TMcGahee code and maybe the LC chip. The RTC wont tick unless the RTC_TSR value is set to a none zero value. I solved this by setting...

Thanks Paul. You're some kind of customer support superhero. Like the Flash, but with microcontrollers. :D I guess my issue has to be with the length of the jumpers, so I'm ordering up your adapter for testing. Will...