-----Original Message-----
From: jerry <jerry@...>
Sent: Wednesday, February 19, 2025 9:17 PM
To: [email protected]
Cc: K9HZ <bill@...>
Subject: Re: [SoftwareControlledHamRadio] CAT

?

Or we could use one of the traditional serial ports built into the Teensy hardware.

There are eight of them.? But looking at the Main Board schematic, I don't see much in the way of unused pins.

?

On 2025-02-19 17:56, K9HZ wrote:

> Here’s another thing.? There are other ways to interface USB to the

> Teensy if you need more USB hardware.? The FT201, FT233, FT311, FT2222

> are all devices that sit on one of the I2C busses as a USB translation

> device.? There appear to be Arduino libraries for all of these

> devices.

?

*** For low-performance USB serial - like CAT, that would be fine.? But then we wind up with two USB cables, unless we shoehorn a little hub into the radio somewhere.? I *really* like the idea of having one cable from the radio to the computer.

?

????????????????? - Jerry

?

?

?

?

>

> DR. WILLIAM J. SCHMIDT - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ

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>

> Owner - Operator

>

> Big Signal Ranch – K9ZC

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> Owner – Operator

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> Villa Grand Piton – J68HZ

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> email:? bill@...

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> FROM: [email protected]

> <[email protected]> ON BEHALF OF K9HZ

> SENT: Wednesday, February 19, 2025 7:41 PM

> TO: [email protected]

> SUBJECT: Re: [SoftwareControlledHamRadio] CAT

>

> That’s a good idea and actually, I think I saw an article on someone

> using a USB server device with their T41.? I don’t know how that works

> but its out there…

>

> DR. WILLIAM J. SCHMIDT - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ

> PJ2/K9HZ VP2EHZ

>

> Owner - Operator

>

> Big Signal Ranch – K9ZC

>

> Staunton, Illinois

>

> Owner – Operator

>

> Villa Grand Piton – J68HZ

>

> Soufriere, St. Lucia W.I.

>

> Rent it: [1]

>

> Moderator: North American QRO Group at Groups.IO.

>

> Moderator: Amateur Radio Builders Group at Groups.IO.

>

> email:? bill@...

>

> FROM: [email protected]

> <[email protected]> ON BEHALF OF Mark J Culross

> SENT: Wednesday, February 19, 2025 7:34 PM

> TO: [email protected]

> SUBJECT: Re: [SoftwareControlledHamRadio] CAT

>

> Jerry: could you just use the standard Serial + Audio USB

> configuration on the primary microUSB port, then add an external

> USB-to-serial adapter plugged into the USBhost port & use that

> additional interface for your CAT control ??? Just a thought...

>

> Mark J Culross

>

> KD5RXT

>

> Sent from AT&T Yahoo Mail on Android [2]

>

>> On Wed, Feb 19, 2025 at 5:54 PM, jerry-KF6VB

>>

>> <jerry@...> wrote:

>>

>> All,

>>

>> I have been working on CAT ( remote control ) for the T41.? I

>> re-architected it to a data-driven approach that is much cleaner and

>>

>> will be easier to maintain and expand.

>>

>> I have the basics running:? read & set the frequency, read & set the

>> volume and mike gain, set the operation mode, make it transmit.? It

>> is an emulation of the Kenwood TS-2000.? There is a LOT of stuff that

>> we don't do yet.

>>

>> I have given the code to Jack.? I hope it winds up in the permanent

>> archive.

>>

>> Right now, I am getting nowhere fast with the next step:? piping

>> audio over the USB.? With that, we would be able to run digital modes

>> with

>>

>> nothing but a USB cable between the radio and a PC.

>>

>> USB function is selected by the "USB Type" pulldown at the Arduino

>>

>> IDE.? There are various combinations of functions, but not the one

>> that we need:? two serial ports, plus audio.? One serial port for the

>> teensy uploads & Serial printf()s, a second serial port for CAT

>> control, and an audio port.

>>

>> The code that implements these USB functionalities is buried in the

>> Teensy "core" - the actual TeensyDuino code.? In my system this is

>> at:

>>

> c/Users/Jerry/AppData/Local/Arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4.

>>

>> The definitions of the USB choices are in usb_desc.h.? It's basically

>> a big array of #define's.? Lots of sets of #defines, each set in an

>> #elif section.

>>

>> ANYWAY, I hijacked the "USB_TRIPLE_AUDIO" section and replaced the

>> third serial port with audio.

>>

>> Big fail.? It compiles and loads, but then the "composite USB device"

>> does not start, there not only no audio, there are no serial ports.

>>

>> Without serial ports, I have to hit the button on the Teensy to

>> upload new code to it.? I'm at a bit of a loss as to how to

>> troubleshoot it.

>> USB is pretty complicated...and no debugger.? Can't even do debug

>> printf's.? One possibility would be to hook up a not-USB serial

>> interface to a couple of teensy pins.? Or do what I did once upon a

>> time...find an unused I/O pin and have it emit morse code.

>>

>> The Teensy is limited to 8 USB "Endpoints".? That limits the number

>> of USB devices you can have active.? Two serial ports plus audio

>> maxes it out.? Which is too bad.? There's also a simulated disk

>> drive, which could come in handy.

>>

>> Any USB experts out there?

>>

>> - Jerry, KF6VB

>

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