@NuttyMonk: I have absolutely no experience with programming the specific timer + interrupt hardware in the Teensy, so I'm hoping that maybe my ignorance could work in our favor here. With that restriction in mind,...
@SteveSFX:
No...you are close to being in the same neighborhood, however, it seems that you are still missing the detailed understanding of a very important aspect in your declaration . . . take note of the RED...
@SteveSFX:
Google is your friend !! The answer is quickly found by searching for "arduino SD card variable filename" . . .
Just remember to make your array big enough to hold the *longest* filename that you...
@tedm:
Welcome to the Teensy world. You have chosen an excellent platform to potentially base your project upon. I'd suggest you take a look at the Audio Adapter Boards at this <link> (don't be scared that the...
@SteveSFX: I would guess that those are examples of the required settings & syntax for graphics driver chips that most likely have absolutely nothing to do with your 240x240, since it would appear from one of your...
@hbtousa: Unless you are reading a physical potentiometer, you should not need to consume an analog input pin for volume control. You just need your touchscreen volume control (implemented as a slider or as UP/DOWN...
I usually either order my T4.x with pins or solder on my own. Using this, I also solder socket headers to the Audio Board. This arrangement allows me to stack the T4.x on top of the Audio Board, giving clear access to...
You didn't say which Teensy (T3x or T4x) and/or which Audio Shield (Rev C or Rev D) that you are using. Check this <link> for info on which pins your Audio Shield is using (very likely an overlap on pin 7 if you're...
The standard data rate for MIDI over serial is 31250 bps, which limits the maximum transfer that can be expected. With one start bit + 8 data bits + 1 stop bit per MIDI message byte, you can expect no faster than a...
@Roy86: Do you see the same overheating issues if you run any of the Audio Shield examples ?? This may help narrow down whether it might be a hardware vs software cause . . .
Mark J Culross
KD5RXT
@Pkore:
Nothing in the example that I gave is absolutely required. I simply intended to give you some possibilities to play with (my best guess as to what you were looking for).
More details:
Using a DC source...
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@Pkore: Welcome to using Teensy's fantastic audio library !! I'll take a best guess at what you are trying to accomplish. Import the following into the design tool (NOTE: in the future, when posting audio design...
In the original code (from tsan) that you were using as your example, a float value was being stored in the "data" array, and the (float) members of that array were being translated into 4-byte components & being sent...
Double-check to make sure that you don't have Arduino installed in two different locations. From what you describe, it sounds like you do, & the one with TeensyDuino knowledge is the one that runs when you activate the...
Installed TD1.57b1 over TD1.56 (without uninstalling). Building with Arduino 1.8.19 under the following conditions:
Arduino IDE Configuration (last built with Arduino 1.8.19 + Teensyduino 1.57b1):
Tools/Board:...
Richard:
I took another look at my TeensyMIDIPolySynth source & realized that there is one additional difference in my implementation of the USBHost interface that might be pertinent. Because I have only used T4.x...
@Rolfdegen (or anyone else who has already succeeded in adding an oscilloscope display to your TFT project display):
I would like to add an oscilloscope display of the (digital) audio stream created by the Teensy...
@rvh: Regarding your earlier question on the use/need for calling myUSB.Task(), the USBhost source shows:
/**
* \brief USB main task, responsible for enumeration and clean up stage.
*
* \note Must be...
Wow, how did I miss that ?? Don't I feel a little foolish right now !! Thanks for the quick reply, Paul. For my more complex projects (like this one), I always include a "pin usage" diagram in the project source, so...
BACKGROUND: I have continued to expand my TeensyMIDIPolySynth project & am very pleased with how it keeps progressing. The current version uses a T4.1 + Audio Adapter Board + RA8875 display. All controls (buttons &...
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