Activity Stream

Man, it becomes hard to keep up here... When work was done by Cor on the 1.1dev version I decided to work the manual. It seems a bad idea to work on it because changes are coming very quickly these days, so some...

What were the pullups before? You didn't post a schematic :) Fast speeds generally need lower value pullups (up to a point).

Indeed, may be using what is left from the second core running the VGA buffer filling would be a better approach. But I have to admit that I did not look at the capability of the PIO code. It remind me the copper code...

Indeed, Thread was marked BETA - and a good amount of effort shows GDB generally usable - but has some limitations - for whatever reason the author hasn't updated in 10 months. Whether lack of interest when time was at...

Sure, it's understood that the Audio core needs changes in order to construct and destroy Audio objects and their connections at runtime - that's absolutely the point of this thread, to check no-one else has tried :D...

RTC on Teensy 3.x is "Compile Time" - filled in as HEX is created and unchanging - reload the same HEX 22 hours later and it can go back to that time.Off by 2 minutes suggests a long build time or delay in uploading the...

@h4yn0nnym0u5e Creating and using dynamically/runtime created Audio Objects would need some kind of object manager and/or some modification's to the whole Audio library. It would be possible and I have some ideas...

@mjs513: Made PR for the text.ino Sublime 'code reformat' - lots of tabs showing - odd indents? Added 'i' and 1 sec interval timer to track loop cnt and DMA callbacks > DMA has minor affect on loop count/sec and...

Perfect - that compiles OK now :) Many thanks

It's time to set the sommer time. But unfortunately the Teensy is not set at the new PC time... Why ??? Thanks

Hi, Ive added the updated effect_granular files to the lib section separately. cheers Cor

Hi Adrian, I will check what causes this. Could be that I have been changing a bit in the audioeffectgranular library after all. Will take a few minutes . Cor

Hi Cor, I am having trouble compiling the latest version in the Arduino IDE (update20210409_v1.1dev). Line 295 of main.cpp granular1.setTESpeed(TE_speed); // set TE speed gives the following error during compile:...

Thanks for that thread link, houtson. I knew it could be done but it drew my attention to a couple of interesting points... Sounds from TigerBalm2’s post as if there would be interest in this ... and I’m not getting a...

Then I guess you need to fix up the debugger code, take a fork and mend it. Use a logic analyzer, Oscilloscope or console out to find out why it is not working.

Presume then that then MegaCAN variable should be volatile?

This should work pot pots; void update() { for (int i = 0; i < 16; i++) { pots.update(output); }

hi h4yn0nnym0u5e, This old thread talks about dynamic connections, might be useful ? cheers, Paul

Excellent! For the benefit of future readers, the 6N137’s pin 6 is open drain, so if you do as ghostintranslation has done and pull it up to the Teensy’s 3.3V rail there’s no problem with excessive voltage. And EN...

Hi, The issue (locked in DIRECT playmode in samplerate play SETTINGS menu) that lead me to create "devA" wasnt completely cleared I think. So I have updated this once more, its nothing major and its easy to overcome...

Hello Peter444, Thanks for sharing, Can you try this with your detector but with the devA DEBUG version ? And share the output of the serial from startup until you get loss of sound ? I have not seen/heard this...

if you don't use events(), message reception is fired directly to callbacks. I too use CAN button counting for OEM keyfob to control windows and sunroof, obviously you need to count them not in the callback scope only,...

Hi, Is there somewhere I can find more detailed documentation for this library? The git page assumes you understand why mailboxes and FIFO would be useful, and I’m looking for more information on these. I am also...

i use a RaspPi 8xmcp23s17 breakout board on Teensy4, I only needed to run 6 wires between teensy and the breakoutboard to get 128gpio support at 10mhz

I'm interested in this topic as well. I'm working on a synth now and it would be great if I could make the sound engine "swappable" like an OP-1. Manicksen, is your dymanic matrix switch different then using 4 mixers...

The MIMXRT1060-EVK looks like a dev tools for making Cortex M7 systems not something used on existing Teensys. Yes? Perhaps Paul used one when he made the Teensy. My Use Case is debugging an extant Teensy...

Dear developers :o As first thanks a lot for providing us this beautiful detector. I've build two of them a year ago and regularely peeking here to follow the progression and see the detector becoming better and...

If you are using a library like MegaCAN, which will parse the message IDs and data, fifo with interrupt probably makes the most sense.

So you said the signal was inverted and I suspected that because of the readings I was getting and I thought this is probably different than with the 6N138 example I saw on the website... And so instead of trying to fix...

Just to satisfy my curiosity I put back into the loop Paul's vsych timing code and sure enough, whatever combination of settings Sparkfun is using seems off: Using the 6Mhz clock and only changing frameRate to 30 and...

Something strange experience: if the pullup is 2.2k ond the sda and 10k on the sca! The 1MHz is working! :rolleyes:

Thanks, i did not find it before unfortunatelly. Right now my panels are ready, so i shoud improve the i2c somehow. And the speed of the 23017 is just a side effect. The DAC must be faster.

I have tried 700kHz, but the Wire setclock() did not change the rate. It could set 1000000 and 400000 and 100000 as i have found.

mailbox holds one frame only, FIFO holds 6

Yes... I'm working on it! Right now I have the SDR part (Audio processing, IQ generation etc) working in a stand-aloe config, and am concentrating of the RF hardware side (mixers. QRP linear amplifier, filters). ...

I'm using the 6N137 on a Teensy's output. The opto inverts the signal - when the internal LED lights, pin 6 goes to 0. You can fix this by connecting +V to pin 2 and the signal on pin 3 with an appropriate dropping...

From memory, I think the 6N137's EN pin needs to be pulled to 0v.

Did a little bit more testing and one thing I noticed is that the framerate when set to 60 seems alot slower using the Sparkfun config rather than the default config. With the default config the osc_div is set to 2B...

...actually, 2k could be a bit high, 1k or 470R might be better. And (3b) would be to open Serial1 at 31250 baud and print out what you receive, before diving into the MIDI library Cheers Jonathan

Good question/point! As mentioned by Frank, he did increase the refresh rate to a higher speed. As I mentioned in the previous post, the question is how much time to take to polish some of this stuff. If the idea...

I would say the Pico would be more than busy with the sound emulation alone. The sound chip is very complex, and was the best of its time. The code for the sound emulation is quite complex, too.... I remember, when I...

Have you tried to use custom code with the other PIO to generate C64 sound? I don't know a lot about the c64 but it sounds like something that you could do without generating a lot of interrupts.

Nearly there! (1) get the Tx Teensy to toggle its output at 1Hz and run your first program to show what’s seen. If nothing then (2) check your wiring, especially the polarity... Assuming you get that working, (3) run...

Found it. 3, 0xb1, 0x00, 0x10, // FrameRate Control 119Hz its in both the ILI8341_t3 and _t3n libraries.

Just got around to pulling this morning's changes - will see where it stands - seems the DMA buffer will work for the Continuous sent to Processing without the bogus image result - will try that shortly. Got...

So I have tried to connect the EN pin to 5v and add a 100nf cap between gnd and vcc but it didnt change anything. So then I did a simple program just to read the pin instead of trying to get MIDI as suggested: ...

The ILI9341_T3 lib sets it to 119Hz. I did this some years ago by adding it to the init data.

Another detail to keep in mind is the display redraws the screen from its own frame buffer at a speed probably less than 60 Hz. I recall seeing a register to adjust the internal refresh speed. But no matter what...

Hi all @KurtE beat me to it - was going to mention that @KurtE did a lot of work with FlexIO and he a library set up for it - not sure where the whole discussion is on the forum anymore I'll second what Kurt said...

Hi Paul, With the DMA stuff I found I needed to ignore 4 pixel clocks per HSYNC. I do it at the end of the row, not sure if best to split? Or not. Keep meaning to update my internal FlexIO library to work with...

I am not promoting in any way the raspberry pico on this forum but I had a week off to experiment and started to port the MCUME project on that MCU. Initial release at: ...

I'm working on FlexIO again today. Building test code inside your lib and targeting 8 bit mode, mostly just overriding the readFrame() function while I struggle to get it just working in any way at all. Will convert...

I know typically can not push it much especially over jumper wires. If we really need to get it faster... We probably need a setup where camera and display are plugged in. But not sure at this point how far to...

Yeah I'm probably headed down that path now that I have a better understanding of things, thanks.

If you need a full featured debugger, the MIMXRT1060-EVK is probably your best option.

@KurtE Can't seem to push the SPI Clock over 30Mhz for the ILI9341 - just shows a white screen if I do. Just an FYI

Hey Luni, Any idea on how to fix/workaround the issue with the Ethernet Interface on Teensy 4.1 detailed above? I need a debugger to fix the debugger! Reducto Il Absurdum

I'll go ahead and push the changes I have so we will in synch again. then you can change the handshake. You know never thought about about how fast the screen can update. Don't remember what SPI we defaulted to in...

@mjs513 - Those values appear to work nicely. Wonder if it is the DMA or the update to the screen or??? That is can the ILI9341 display display 60 full frames per second? That is assuming 0 overhead each frame...

Thanks for the info and update

Yes :-) In the meantime I have now learned that __aeabi_uldivmod is used here for 64 bit data types. So, everything is OK.

@KurtE Changed 2 settings in the default config and DMA seems to be working without using the Sparkfun: {FS_60HZ_L, 0x85}, {FS_50HZ_L, 0xa0}, Give it a try and let me know if I am...

Just merged your PR but looks like DMA mode got worse when not using Sparkfun registers.

Thanks. I considered the 4.1. I chose the 4.0 because of the lower price.

As others have said, littlefs is now incorporated in the latest beta. In the beta, the file abstraction layer has been rewritten to provide things like access to flash memory systems. If you are not wedded to the...

Was actually thinking about something like that last night but seems you beat me to it:) Anyway's just did a quick experiment and think the MCLK clock has something to do with it. For the default_regs example I...

Sorrry, I am not sure I can give you a complete list of projects, that use the USB Host, but off the top of my head here are a few devices and the like that we have code support for: Simple HID (Human Interface...

Hopefully Paul or someone who uses Linux and Makefiles a lot can give you a decent answer. If I were wanting to do this, I would probably tend to have sort of recursive makefiles. That is for each library and core...

Sort of a random question/observation, not just tied to MM but all T4.x... How best to put infrequently used tables with stings into flash memory so it does not eat up ITCM space.... I wanted a table of Register...

Thanks to you. I dont like holes in my code ;) Another one plugged ! PS. yes I know the startup now shows a 9 on the separate line ;) UPDATED: devA is now having a normal title again:)

That's fixed :) Many thanks!

@Frank B Ok - I know I can't answer this but curious since I have no idea what it means. Think you are saying that what lib is included its using software to calculate integer divisions when T4 should be doing it...

@mjs513 - I pushed the current stuff as a PR so you can play along also.... Also forgot to mention, made the build with SerialUSB1 optional, if you use the command that needs USB1 it will print an error message if...

You can test a new compiled Hex (devA). I think its solved. I have also updated the code. cheers Cor PS. I have updated the code/hex to prevent the title overscrolling to the next line at startup

Hmmm — I was using FIFO. If the mailbox has more than one frame in it —*how can I ensure that they are all dealt with in one go? or is that not possible? I'm using MegaCAN which has quite a hefty parsing 450 line...

Confirmation. This indeed locks at direct ... thats unwanted behaviour. I will change that ASAP. Luckily you still have the control from the main-screen :)

See this Forum, "Announcements". All your files will be deleted when you upload a new sketch. As far as I know it is planned to change that. May take some months.

OK. Thats something I have not checked ... Thanks. I will report back.

Nice comparison @KurtE. From the lib I know what some of those settings are and some get changed with the function calls: INTEGRATION_H(202) 2(2) 1(1) INTEGRATION_L(203) 133(85) 2(2) ANALOG_GAIN(205) 0(0) 32(20)...

Thanks, I have what the Teensy site says is the latest, 1.53. https://www.pjrc.com/teensy/td_download.html Where do get 1.54?

Hi Cor, I get that behaviour from the main screen, but in the settings menu where I want to save my defaults, once it gets to DIRECT it stays stuck at that setting. Regards, Adrian

Thanks Paul. I don't really think I was creating a project in the right way at all. I had a folder that simply had my main.cpp and the Makefile, but I guess with that setup, there's no way to get what's in...

It's already included in latest Teensyduino (1.54-beta7) (don't worry about beta)

Upon further research, it looks like the LittleFS at https://github.com/PaulStoffregen/LittleFS will probably provide the functionality I'm looking for: So ... how would I go about downloading it to include in my...

Good morning again, Playing with sketch in new branch: dma_frame_8bit, where I removed the conversion from 8 bits to 565 in the DMA code and instead returned the 8 bit frame data, which to display you do the same...