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Same here as well

@mjs513 - We posted/edited at same time - See my updated comment above

Warning I have not done anything with the T4_ADC_ringBufferDMA sketch yet... Maybe I should make at least a partial fix to this one...

I have/had my own example: Tr_ADC_DMA_RMS, which I...

Updated T4_ADC_Compare.

Will retry the DMA one to see what is happening?

@mjs513 - Updated (\n)

I did a quick check back to your WIP branch and as far as I can tell everything in master is up to date with changes there?

Sounds good!

@mjs513, @defragster...- I updated the test program, to give option to output binary or CSV files.

Also allows you to type in name of file...
If first character of line is a , the file will...

@mjs513 - Yep I am hacking up my example sketch to allow it to either output CSV or raw...
Would make it easier to look at...

With things like, this it would be beneficial if you might provide some additional information,

Like pointers to the actual hardware you are using, and likewise library: Is it this one?...

@nominal animal - DMA examples - There is sort of an example for doing DMA with both ADCs that is part of the ADC library

There are issues, with the ringBufferDMA as part of that project... I had...

Yep - Thanks, I forgot to put the close in...

Yep - Currently a binary format, 2 bytes per sample.

Obviously we could hack this up more to have something like a CSV file. Would add a...

@mjs513, @defragster... I extracted my DMA processing out of my example sketch and into some external files.

I think the example app is still working OK... let me know what you think.

Kurt

FYI - I changed over to SDFat Beta...


/*
This example shows how to use the IntervalTimer library and the ADC library in the Teensy 4.

It uses the SD library to try to write the data...

Yep - I have a hacked up version now, that is reasonably KISS... It compiles, but I have not tried it yet:

/*
This example shows how to use the IntervalTimer library and the ADC library in...

@paulStoffregen and @mjs513 - Yes the Wire change fixed an issue where for BN0055 we cleared the fifos if we entered a new start condition and the fifo had data in it...

This busted some...

Mine arrived to our PMB in town today. So far it looks like I should wait to do anything with it, until this is resolved.

@defragster - yep it would make sense to add. I mainly put in the else stuff including the is Complete as a quick and dirty test to make sure my settings were not screwed up, such that the...

I have started playing with an IntervalTimer based sketch, that reads in 2 different analog pins for both ADCs. Currently I just stuff them into one array inside the interval timer interrupt...

@mjs513 will cleanup...

Also may try an intervalTimer example and see if it works.

Probably won’t be the same as the main ADC library one, but simpler...

Sorry not at my desk right now,

But as mentioned, there may be solutions, but other than @PaulStoffregen we are all just users like you.

There are many of us who like to help. Suggestion, you...

You might try: tft.fillTriangle...

Sorry, hopefully someone else up here can give you more definitive stuff...

But I personally have had better luck with +5v to the display an in one case I actually retrofitted their display to use...

Good luck... When it arrives and or if you have additional questions, it might help to put a link in to the exact one you ordered...

More details about some other experiences with these dsiplays...

The question is, do I extract the simple class I put into the sketch and make it a reasonable library class object. If so should probably clean up, probably remove direct access to variables, but...

It has been a long time since I played in this library.

But the first thing I would do is to turn on DEBUG stuff. Go into USBHost_tt36.h and uncomment the line:

//#define USBHOST_PRINT_DEBUG
...

Or with a Teensy with more memory like T3.6/3.5 or T4, you can use the ILI9341_t3n library and turn on using frame buffer.

With this you can write the code pretty sloppy and for example each time...

@manitou - Thanks for the links. I cloned your Teensy4 test project, as to make it easy to find...

I saw that you had a few of these sketches.. Will look some more.

What I am/was curious...

@mjs513 - Make sure you picked up the bug fix to enableDMA in adcl_t4.cpp

void ADCL::enableDMA(int8_t adc_num)
{
if (adc_num == 1)
adc1->enableDMA();
else
adc0->enableDMA();
}

Hard to say with just the datasheet, as there are lots of configurations of that board, so a lot depends on what options/version did you buy?

Like: What type of Interface did you choose? And in...

@mjs513 - I just updated both sketches ;)
Now have some of the DMA stuff in a class as part of the sketch, where I then created two instances of it, Where I setup two dma operations, one on ADC1...

Quick update:
I updated the above sketch not to use the DestinationCircular and interrupt on half way to instead be a setup of two different buffers, each pointed to by a dmaSetting object and then...

@mjs513...

Yep coming along.

I am doing a little playing with DMA. So far not updating any of the ADCL class. But here is the start of an example that is continuously doing DMA read...

@mjs513 - Hopefully next up figure out what we should do with the DMA cod with ADC..

Currently there is code in ADC library called class RingBufferDMA which I am sure started from his RingBuffer...

Ok I edited it like you mentioned...

You might want to take a look, to make sure I did not screw up something.
https://github.com/PaulStoffregen/cores/pull/406

Will do.

I for sure would not delete the old defines. Have two choices, both ways are in imxrt.h.

That is could redefine all them as reflecting the new structure: like with I2C...



}...

@Paul was wondering about possible additions to IMXRT.h. That I have run into as part of the ADC port to T4 Things like:

ADC structure definition:
Which I currently have in the ADCL_t4 library:...

@PaulStoffregen... :D Sounds great.

There were a few other PR's out in special thread, like fixing some issues for Wire. @mjs513 has a nice version of the ST7735_t3 code base...

Wondering...

Again others can answer better than I can...

I do very little Analog stuff, and rarely do I need to write stuff to SDCards...

Usually just enough to help other fix problems or testing out new...

@mjs513...

I hacked up my test program on T3.5 to generate the sine wave where I use one pot to change the amplitude...
Again not the cleanest setup, but:

#include <Audio.h>
#define...

You can use the ADC library on T3.x (and LC), and use DMA operations to collect.

As how fast you can write out to SD Cards... There are several threads and other places on web to find...

Assuming you are using the Teensy version of the Wire library.
Wire.h and Wire.cpp I believe are only used for AVR boards like Teensy 2.

WireKinetis.h/.cpp - Are used for Teeny 3.x and LC...

@defragster - Will have to remember that later. Luckily not building too much with it here...

@mjs513 - Pushed up a few more changes/fixes - Playing with the continuous update example. Having...

I know there are probably easier ways and maybe I will play around some more with it, but as for test sketch, can always use Audio library. Example one I just setup to run on T3.5 (or 6)...

...

In this case they are uint8_t...

As if you look at the start of the T3.2 manual 47.3 it says: Only byte accesses are supported.

Simple question is why not just uses the values in kinetis.h ...

But Lets look at S1...
#define UART2_S1 (KINETISK_UART2.S1) // UART Status Register 1

It is based off of the address of...

@mjs513 - fixed (I hope) the problems I mentioned in the last message, like adc->analogRead(pin);
Will now check to see if valid pin on any ADC if so it will use the first valid one (i.e. if in my...

@mjs513 - Hopefully I did not screw up everything, but I merged in the DMA branch...

Still not totally functional yet, but it also has a lot changes for housecleaning.

That is I moved most of...

@mjs513 - I will merge in some of my stuff soon, to master. It has some of the stuff for adc->adc0 (or 1) but so far I have not added in all of the error stuff.

Made some progress on the DMA...

@mjs513 - Hope you are doing well.

As for new branch/master/DMA.. hard to say, I started new branch as there are at least the two of us, and did not want to break everything yet.

I am trying...

@mjs513 - I see that you added some stuff...

Note: I just pushed up a new branch DMA_SUPPORT -
Where I am trying get some of the examples to be able to build and then hopefully work like the...

@mjs513 - Still totally distracted :D Hopefully later today I will maybe have the opportunity to concentrate a little.

I probably should start off hacking something up, but I find myself wanting...