Frank B
Senior Member+

Yup, the working program looks like this: // For Loop test lighting the LED const int ledPin = 13; int x; void setup() { pinMode(ledPin, OUTPUT);

Haha...shipping US $557.11 Ebay sucks.. they should stop that.

LOL, of course, the Teensy is the problem... Nope :) Think twice: why is x a constant in your program? Then, a bracket "}" is on the wrong position. (No worry, just yesterday I did not think too and posted...

I measured mine (cheap but good) - it uses 0.13V In "diode measure" mode it uses 3.8V Note, the i.mx.rt uses much less than 3.3V internally. I *think* absolute max is 1.6V (only when overclocking)

Well, your program compiles fine for other users. Nope.

Quite possible. I saw now that the ADC uses a timer that is connected to the Core-Clock: const int comp1 = ((float)F_BUS_ACTUAL) / (AUDIO_SAMPLE_RATE_EXACT * 4.0f) / 2.0f + 0.5f; So, this will result in...

Do'nt you want to add it here, too?

I wouldn't like links to Adafruit, Alieexpress etc. We don't have to do the marketing for big companies. But having links to user-contributed things and Tindie is OK for me. To make it clear: I do not decide this :)...

LOL Your're right, of course. That comes from too much editing... THANK YOU I stop editing code for today.

I added the error checking to the sourcecode in post#3, It does not show an error.

@Paul, that was an fast answer :) I'll check for errors.

yes, always post complete code: #include <DMAChannel.h> #define SAMPLES 128 __attribute__((aligned(32))) static uint32_t fm_tx_buffer; DMAChannel dma(false); volatile uint32_t target;

Do you find it disappointing too, that several manufacturers of cars, washing-machines, and tv-sets exist? No, it's good. Without competition, there is no progress. Arduino stands still for too long now. And I'm...

Best is to buy a good Logic Analyzer.

Yes. Un-install that. Download the Windows 1.8.13 version (zip-file), install it (best is, to an new folder "c:\Arduino"), then Teensyduino.

There is no version 18.3 :) Just do what Paul said. Download 1.8.13 from the Arduino website. No need to check any version files etc. That makes all unnessary complicated. Don't try to find the problem. Download & new...

I just say, if you don't do it now, a) others will be faster b) the longer you wait, the harder will it be - the api will grow. Then, c) its a selling point d) its worth the risk :)

Yes, it prints a message, and switches off after that :)

It switches off, i think that's the best to prevent further heating. Nobody knows wether it crashes again, so.. just switch off.

That's not the point. The Raspberry is old tech, too. And the first Raspi was old tech, too. They sold 40 or 50 million.

Yup, and of course it's possible that the CPU gets unstable at some point. That's why it's called OVERclocking.. NXP says more than 600MHz is too much. You don't pack 3tons on the backseat of your car, too. The...

Which problem with the IDE? It should work out of the box. Own builds will not work with Teensyduino - it checks the version, on install. There are no problems. Something is wrong with your installation. Do it...

If the processing triggers it, the processing is the reason.. i.e. a bug in you program? SOme kind of timing problem, perhaps with interrupts. "pass trough" involves some processing, too. the audio library does this in...

If you guys tell me what chrashes (with a short example program) I'll look.. at the moment i think a crash of SPI is unlikely, too.. I remember it uses an other PLL. This thingy has seven of them...

Ok, I tried this: #include <Audio.h> AudioInputI2S i2s1; //xy=115,136 AudioOutputSPDIF3 spdif3_1; //xy=369,136 AudioConnection patchCord1(i2s1, 0, spdif3_1, 0);...

Hi Paul do you have some time next week to merge some PRs?

If it locks up, it might be a bus hardfault. Can you post a short program that locks up? My private core version shows such things.

Which SPDIF output do you use?

I still think BASIC is ideal for beginners. And I don't like Python. But if I had to choose between nothing or Python, I'd choose Python..

Sounds reasonable. The bus clock changes.

No, thank YOU for posting it.

I think so, too. https://github.com/PaulStoffregen/Audio/pull/378/commits/dc9b15b5d8625d3b08327b744c185ae968f969ef

Audio uses its own PLL.. hm. interesting... wonder what the reason for the glitches is.

Maybe you don't need to overclock it all the time? You can adjust the speed at runtime. Sorry, wrong thread here.

@ bvernham your Screenshot shows you are compiling for a Arduino Due? That's *NOT* a Teensy.

You can try to overclock the T4 - with a good cooling, it can do more than 600MHZ - but at some point it will become unstable.

extern "C" uint32_t set_arm_clock(uint32_t frequency); void setup() { set_arm_clock( 912000000 ); } ...you will notice, it shuts down due to "Temperature panic" after a some time.

Interesting. How large are these buffers, and how many?

The question is, how to fix that. Fix the documentation only? +fix the names in the sourcecode, but with the current behaviour? Or fix the bug - that would mean to break old things.

I'm not sure where this GPIO comes from.. its noted as a feature of the PIO statemachine. No mention of GPIO. I don't know if that counts as software, and it says nothing about jitter. But I know it's not cool ;) ...

At least, Amazon makes it easy to return parts...

I've tested your sketch.. can't confirm this. Not good. Your ohmmeter.. which voltage does it use for measuring Ohm?

..and here is audio: https://github.com/raspberrypi/pico-extras

..with "TeensyPie" ;) Here is the bootrom: https://github.com/raspberrypi/pico-bootrom They have an impressive list of examples already: https://github.com/raspberrypi/pico-examples

I ordered two, to see the SWD and other things.

I see no encyption, too, but that does not mean that they can't add it in a future revision. And maybe there are MCUs with encryption in the pipeline (or already available?), for industrial use. RP2040, where the 0...

"3 PIN I2S" means no MCLK, and data in one direction..i guess.

If their marketing will be as good as for Respber Pi #1, it will not just be a SAMD killer, it probably will be a Arduino killer.. the pushiment for standstill. The API looks very good and easy to use, and then,...

Yup, was about to write the same :) The PIO is quite interesting. But at the end of the day it's just a replacement for real devices - and there are only two PIOs.

I'd says it's just a firmware on the first pico that makes it a hardware-debugger-dongle. Just as all the other dongles.

Can we do, too, all we need is a "start event" and some code in the core .. (*or/and swd on 1176...)

From their examples, an I2C Scanner: // These are any addresses of the form 000 0xxx or 111 1xxx bool reserved_addr(uint8_t addr) { return (addr & 0x78) == 0 || (addr & 0x78) == 0x78; } int main() { ...

@Paul: Maybe we should create an API for the 1176, that is compatible to this thingy. .."Run your Pico programs with 1GHZ" :) Or just now for T4.x? Its early. The documented API is not that big. That will...

Marketing. Economy. We will see better models someday. Users will buy the better model. So they buy two, then. Then the next model. etc etc etc. You have to get customers hooked. With a simple to use thingy. Of...

..any you may alos want to look at pulseClock with just uses a "nop" #define pulseClock cbi(P_SCK, B_SCK); asm ("nop"); sbi(P_SCK, B_SCK) That's way too fast, I think. Maybe just edit the cbi and sbi macros and...

void LCD5110::_LCD_Write(unsigned char data, unsigned char mode) { cbi(P_CS, B_CS); if (mode==LCD_COMMAND) cbi(P_DC, B_DC); else sbi(P_DC, B_DC); for (unsigned char c=0;...

...would be easier to answer if we knew which library you use :) maybe we can look at it...

*phew*.. I think I have all added up to now. The list ist growing. Impressive. Later, in 2-3 weeks, maybe :)

Tim, got my email?

Thanks! Typo fixed, and outputs added. I won't add links to products or breakouts. Or what do you think? Some PDM(/TDM??) microphones are missing.. haven't used them

Added some links!

I remember I have tested it years ago. So, yes.

Paul said, pinMode completely reconfigures the pin. This includes interrupts.

Thanks, added :)

You need to upload the video to one of the sites mentioned in the video link window , and then enter the link into the window.

Yes of course.

Oh, that means it indeed works with the inbuilt LED. Seems that the measuring just needs to be 1000 times faster? (us vs. ms)

So, both show ~5v. Exactly right. I have NO Idea why your LED only work with the PSU 5V line connected to the Teensy. A ground loop?

That again could be a simple SPI-in ("MISO") on the Teensy. (CLK-pin unused, perhaps)

Can you measure the voltage there? (Without your wire connected) Take a look at the Teensy schematic. Vin (on the board it's called "5V") is directly connected to USB. So you connect the PSU with your Dell, if you use...

Thank you Pauls The AD is 1MSPS. That was known back in january. I've seen to late that you'd need 10MSPS.That is too much, I don't believe that you can overclock it that much.

WOw.. is that fast enough to record a TV (F)BAS / CVBS signal?

@Pauls: Thank you - fixed, I hope? @Deane: If you want the whole procedure exactly as shown in your picture, it gets a little more complicated.. I don't see that you can program that.. This is not meant in a derogatory...

Ok, the 2nd puls (code from Post #8) might be little too fast-.. maybe try it. If it does not work, we'll see how to make it a little bit longer. Edit: There is a gap between both pulses. Seeing Post#12, that gap...

This is pushing the limits of my cheap equipment.... Cheap scope with cheap probes. Is that short enough?

Maybe tell us which speed do you need.

Or have you cut the contacts under the teensy? In this case the connection would be right...

Ok, Dell ;) It is more likely a loose contact somewhere else. Remove the cable to Teensy 5v if you're using a PSU.

That makes no sense. Be aware - you're feeding your mac with your PSU now. Not healthy.

The for (;;) is a loop (inside the loop()) It is there to prevent that additional things are calld (not visible in your program - teensyduino adds them, invisible) SO...no...it runs !faster! with for(;;) Edit:...

That's right. You should disconnect it. If the voltage comes from external. Are the wires OK? I had more than once problems with faulty, cheap china wires.. If you have a DVM you can test if the pins on the 74 have...

1) It does not work to just plug the pins into the teensy. They give no - or very bad - contact. You need to solder them. I see no solder on 3 (or is it 5?) Volt + If hope not both, USB AND external 5V are...

So it's not PJRC that will be doing the final inspection for the Teensy MM? ;)

That's a clever way to make the whole process efficient, and to create a Teensy "sign of live" for the user at the same time.

Valid argument! Nothing of this would be impossible by just an other blink that gets executed by Python or whatever. It would be *preloaded* only. Removing it would be exactly the same as overwriting the...

...I like the Idea of a pre-loaded Teensy. Whatever system it would be. Forth, Basic, Python..

Form the pure technical standpoint maybe yes. Try to find a youtube influencer that promotes it :) Doesn't it use the reverse polish notation (Or do I remember wrong)? "(A+ B) * C " is "A B + C *" ? I'm afraid,...

Yes, I remember there were articles in some magazines, including ELEKTOR about using CMOS memories as camera. It is, however, interesting how good a simple LED works as sensor.