Frank B
Senior Member+

Maybe there is a way to redirect stderr, too. I don't know Sublime-Text.

here are some additional settings.. just copy them to the batchfile: rem Teensy: rem ------------- set model=teensy36 rem set model=teensy35 rem set model=teensy31 rem set model=teensyLC rem !use teensy31 for...

How does it print the warnings/errors? In a new window, or coloured? They are printed to stderr by the builder, and the ATOM-Plugin opens a nice window with these messages only.

Oh, i always use RawHid :) @darcy, have you got it working?

You need a Teensy 3.x - 3.5 and 3.6 have inbuilt SD-Slots, if you use the audioshield (great soundqualty), you can use Teensy 3.2 (SD-Slot on the shield). You'll need an amplifier. I'd use a 3.5 (5V tolerant) or 3.6...

@Frank: I've ordered the QRP labs „Receiver module“ and Filters just now.

The case looks great! Would you please publish the STL? I ordered a 3D printer for my son and me, and it looks like a worthwhile project.

https://forum.pjrc.com/threads/52761-Teensy-4-0-(hypothetical)-pin-assignments?p=186490&viewfull=1#post186490

@defragster, I have not tried it, but looks good.

Well, then you need to write your own low-level interrupt, and use the int-vector directly. the yield() issue still remains, so overwrite it. Take a look to the teensyduino-core, or ask me @weekend.. dunno if your goal...

red is good as error-indicator ... in the NMIs... ;)

I think, It's important that they are multiple of 128 samples (one Audioblock) - have not looked at the code, but quite possible that the last block gets filled with 0 for the remaining bytes

...looking at the code again.. EventResponder::runFromYield(), called in yield(), which runs in loop() disables interrupts. So, it may help to rewrite your loop for more consistent results: void loop() { ...

some thoughts: - use always digitalWriteFast() - use FASTRUN for pulse() FASTRUN void pulse(){ digitalWriteFast(29, HIGH); } NVIC_SET_PRIORITY(IRQ_PORTB, 0); is the highest priority - it will not slow down...

Hm, have you tried it ? Maybe you can't imagine, but ... the Teensy so so fast, you will not notice any gap, if you're not using delay() or other artificial waits. In addition, there is a small buffer (one...

It would be easier to help if we knew what hardware it was about. Most shields work with 3V, too. Or, use other shields. 5v is outdated technology from the past, anyway. Even 3V is near EOL. In a few years, more and...

looks like a buffer overflow, array-index out of bounds, ...something is corrupting the ram. Without code, impossible to say. Try to strip it down and remove parts, until it works.

Has the not working Teensy 5V when the LEDs are NOT plugged in?

Maybe, longterm, it would make sense to drop that javacode and write a new monitor in a faster language.. This thing is a constant source of annoyance, and always has been, although Paul has greatly improved it. I bet...

Works for me, too.

An thing that I found annoying often, is, that you can't press ctrl-a, ctrl-c if the monitor is disabled. Can you patch this (later this year) , Paul? - an additional button ("copy contents to clipboard") would be even...

Works with WIN10, Arduino 1.8.8, TD 1.45, on a I5-3570k 3.4 GHz, Arduino serial monitor, Teensy 3.2 96MHz

The code can overclock F_BUS to 128MHz, too, so in some cases this will give a good speed-improvement too (I'm not 100% sure, but not in the GPIO-case , I think) This needs a special setting. Good night :) (00:18 here)

That's the reason why, in cases like this, photos are way better..

Others who are interested might want to look here, for example: https://github.com/PaulStoffregen/Audio/blob/master/output_dac.cpp

I'm not that good with hardware/electronics, too, but I've used the unl2803 many (>10??) years ago for a small motor, so yes, I think it can handle a fan. On the other hand, It would be easier to use a motordriver....

you're right, transmit_previous_timeout gets never reset to 0 would be good to fix that and do a pullrequest @ github https://github.com/PaulStoffregen/cores/blob/master/teensy3/usb_keyboard.c#L495

who would have thought that? :rolleyes: you have a pretty exact timing with the first byte received. you know the bitrate and protocol (8N1?) - it's doable to substract the time needed for the transmission, so you...

Hm, is this signal needed ? You'll get the data over the serial interface anyway, and you need serial to do settings. Maybe the signal isn't just there, and is constant low at the moment, until you use serial.. ?

I'd remove the boards.txt 256MHz changes. This will lead to many questions as long the audiolib throws errors when compiling.

soerena: i'm using this here:https://forum.pjrc.com/threads/46168-posted-Commodore-C64-Emulation-on-a-Teensy-3-6-Microcontroller without buzzing - so, it works (with ili9341 display (spi) ), and it seems your setup is...

I think, I had the board with display ready for the c64, before there was VGA. I just made a second board afterwards. I never tried to operate both (VGA + SPI Display) at the same time. There are always problems when...

Platform.txt for Arduino 1.8.8

There are PRs for bugfixes which are not merged. https://github.com/PaulStoffregen/cores/pull/288 (Teensy LC register allocation problem) - and - https://github.com/PaulStoffregen/Audio/pull/272 Audiolib Error @...

Wow, awsome.. I really like your emulators!

To test something like this, it is good to use tested software - like the audio library :-)

New reference manual for 1050, 30 NOV 2018: ...

Sometimes I open then generated symbol table to look for some addresses of variables. It is handy to filter for .bss and sort the output. I added the the following line to platform.txt, which only works for windows and...

@Paul, can you rename Midi and Audio USB settings in the menu to USBMidi and USBAudio? It might be a bit misleading as it is now, for beginners

Have you set the AudioMemory? Please post the sourcecode.

something is wrong.. perhaps sleep a night and try it again. :) sorry, I don't know what the problem is now. Ausserdem läuft dr who im TV.

hm. then, connect only buttons?.. ;-)

Nö,bei mir nicht. Hast auf "Auf Standard zurücksetzen" geklickt? Hast du das neue Programm überhaupt auf den Teensy übertragen?

Yes, sometimes blind copy&paste without trying to understand what it does, does not help.. first, try this: void setup() { // same as Windows default Joystick.Z(512); Joystick.X(512); Joystick.Y(512);...

Your one-liner does a read, a and/or/eor and a write. So it is 3 operations (plus loading the adress). There are more specialized registers, for examplefor setting or clearing bits that don't need the read + and/or/eor...

David, the last picture you have posted is OneWire bus, not I2C. Dont try to add more resistors to 5v.

i'd remove the onboard levelshifters.

yes. the current is not high, it might survive that(??) but I don't know how to get that working - additional levelshifters? that would mean 3v-5v-3v.

if the linked schematic is correct, there are 10k resistors to 5v.

Hi, please use Pauls version - I can not support it anymore - (and it just adds headers). (But you have the sourcecode and can compile it yourself if needed. On the other hand, I just ran it on my Win10 machine -...

Kris, i've seen your wiring in the other thread :) try to reduce the spi to 1MHz - does that work ? If yes, you need *way* shorter connections to the display.

There is no library that handles Flash on this board, but it's not too hard to modify an existing one. Its just switching the three chipselects correctly.

yeah, in cases, where the the size is not important (for example a loop-counter 0..10 or something like that) , use the native int - which, in theory is the fastest type for the cpu.

you can just replace your ints with int16_t or uint16_t, this way they remain the same :) edit: ...and it will still work for your 8-bit mcu :) edit2: sometimes, in rare cases,with teensy, int16 is a little bit...

sure, see link in #8

mouser has 56.286 in stock. :rolleyes:

If size width is important, use int32_t, uint32_t, int16_t, uint16_t... also note, double is 8 bytes (and its not =float like on AVR)

https://stackoverflow.com/questions/11438794/is-the-size-of-c-int-2-bytes-or-4-bytes

https://www.mouser.de/ProductDetail/Texas-Instruments/LP2950ACZ-50-NOPB?qs=sGAEpiMZZMsGz1a6aV8DcBojudwDyMGa5S3VfShno7s%3d (Attention, 100mA max)

Yes, sounds right. You can try to use shorter audio-blocks (64 or 32), either by editing AudioStream.h, or by using -DAUDIO_BLOCK_SAMPLES=64 if you use a makefile or this. The downside is, it adds some overhead for...

Hi Pixe, try the I2C Scanner from the wire library first! If does not work, too, i'd use stronger pullups, like 3k3.

@Paul: There is no page - only the repository. But somehow it is found, because I get emails from users from time to time. But you should also mention F-RAM...

The VGA Output by qix67 uses DMA to GPIO and is awesome - runs entirely "in hardware". Impressive, what is possible with DMA. https://forum.pjrc.com/threads/45916-Teensy-3-6-VGA-driver ...just by configuring some...

Oh, yes!. That's interesting.

@gfvalvo we still don't know what this is good for? - and why you can't write your program without it (" Once that is solved, I can go on with the real code.") I think, it's solved now. Add a print() (or Luni's...

I was about to propose --specs=nosys.specs , Then I noticed that adding a Serial.println("Hello world"); is enough to fix the error. _write is not needed. - Just add a print somewhere in your code. edit: But it...

I wonder what the mentioned several M0 boards do with getopt() - that's why asked. @Gfvalvo, what does getopt() do on these boards?If it's anything useful, I'd like to know!

And what should getopt return? Maybe while ( false ) does exactly the same...

Is there a distributor in Europe where I can order some? I think it's possible to use this chip, and/or I can make it work - with Paul's SerialFlash library. Or, better, If you order them anyway, can you send me two or...

I think it's this one - indeed there are 10k pullups on the 3v3 side. https://github.com/SeeedDocument/Grove_OLED_Display_0.96/blob/master/resource/Twig-OLED128x64_v0.9b.pdf The "5V" side (3v3 from teensy on I2C) does...

Which chip, for example? Would be good to see a datasheet!

Thought I post some pictures.. the PCB arrived today. Needs a Teensy 3.6. 2MHz I2C causes noise :( so I had to disable the spektrum display - was'nt a problem on the breadboard, before.. @titim: shema follows.

If you tell us what exactly does not work... Compiling? Hardware? It seems to be for the 5 V Arduinos..and has levelshifters..no I2C Pullups.How is it connected?

If it blinks, the Teensy is ok. I wonder how it helps to replace it.. You'll get the same results with a replacement. You're doing something wrong. Give it your teacher again, he will help you.

Thanks! I'll try that, when I have a board.

The T35 and T36 have encryption hardware inbuilt.

Maybe a problem in your program? I use eeprom, it works fine, and nothing gets overwritten. Its default value is 0xff so a 0x00 is not normal anyway.. Edit:I think, *very* old Versions erased it. Years ago.

thank you, I know :) But this is not a solution for T4! I'll try to find a working way...

Ok, worst case would be switching to VGA (... ->port the VGA lib).. and use 40$ 7'' VGA Displays.. should be possible, and a larger display is nice..costs a bit more.. (for my emulation project)

Oh. This limits the possibilities with fast spi displays quite a bit. Too bad that the inbuilt display interface device wants so many pins.. maybe a 8 bit interface would be possible, but I don't know if we have all...