T3.6 USB Host - Raw Hid

I updated the naming to make it more clear, there was some clear confusions how I named before, I hope this is more correct

'class HID_Input : public USBHIDInput {...'

USBHost USB_HID;
USBHub hub1(USB_HID);
USBHIDParser hidDev1(USB_HID);
HID_Input hidin1(USB_HID);
HID_Input hidin2(USB_HID);

and it reports now when connecting

***ZZZZZZZZZ** Device hidDev1 fd9: 60 - connected ***
manufacturer: Elgato Systems
product: Stream Deck
Serial: AL01H1A08927
control callback (hid)
mesg = 22000681
got report descriptor
Found top level collection C0001
find_driver
driver 200038A0
HID_Input Claim: fd9:60 usage: c0001 - Yes
***XXXXXXXXXXXXX** HID Device hidin1 fd9: 60 - connected ***
manufacturer: Elgato Systems
product: Stream Deck
Serial: AL01H1A08927

My understanding is now the hidin1 receives the HID messages from the devise. the hidDev1 writes to the device.

EDIT: there was array overflow causing problems, now fixing that. ah day lost on not noticing that...
 
Last edited:
Morning (at least here) again,

might help if you posted a zip file of your current sketch:
You should be able to create using Arduino IDE (Tools->Archive Sketch)

As for RAWHID... RawHid is simply RawHid, sort of a known format (of no format)
When your setup has specific information or the like, it is often best to create your own class for it.
There are several examples of this, like, Mouse, Keyboard, Joystick, digitizer.

What I am so far unclear to me is if rawhid is the best starting point for you or not. Often Not.

We can often help with some of it with additional information, which is why we have the HIDDeviceInfo example sketch.

It would be interesting to see if there is a HID report descriptor there that makes sense to use for a lot of your stuff:

For example: just the other day, picked up a clone for Nintendo Switch Pro controller, (which does not appear to act the same as the non-clone).

But if I plug that in I see things like:
Code: 
****************************************
** Interface Level **
09 04 00 00 02 03 00 00 00 09 21 11 01 00 01 22 CB 00 07 05 81 03 40 00 08 07 05 02 03 40 00 08 
 bInterfaceNumber = 0
 number end points = 2
 bInterfaceClass =    3
 bInterfaceSubClass = 0
    HID
 bInterfaceProtocol = 0
    None
report descriptor size = 203
  endpoint = 81
    attributes = 3 Interrupt
    size = 64
    interval = 8
  endpoint = 2
    attributes = 3 Interrupt
    size = 64
    interval = 8
*** Device HID1 57e:2009 - connected ***
  manufacturer: Nintendo Co., Ltd.
  product: Pro Controller
  Serial: 000000000001
HIDDumpController(1 : 0x20004220 : 0x20009680) Claim: 57e:2009 usage: 10004 SubClass: 0 Protcol: 0 - Yes

HID Report Descriptor (0x200096bc) size: 203
  05 01	// Usage Page(1) - Generic Desktop
  15 00	// Logical Minimum(0)
  09 04	// Usage(4) -(Joystick)
  A1 01	// Collection(1) top Usage(10000)
    85 30	// Report ID(30)
    05 01	// Usage Page(1) - Generic Desktop
    05 09	// Usage Page(9) - Button
    19 01	// Usage Minimum(1) -  (BUTTON 1)
    29 0A	// Usage Maximum(a) -  (BUTTON 10)
    15 00	// Logical Minimum(0)
    25 01	// Logical maximum(1)
    75 01	// Report Size(1)
    95 0A	// Report Count(a)
    55 00	// Unit Exponent(0)
    65 00	// Unit(0)
    81 02	// Input(2)	// (Data, Variable, Absolute)
    05 09	// Usage Page(9) - Button
    19 0B	// Usage Minimum(b) -  (BUTTON 11)
    29 0E	// Usage Maximum(e) -  (BUTTON 14)
    15 00	// Logical Minimum(0)
    25 01	// Logical maximum(1)
    75 01	// Report Size(1)
    95 04	// Report Count(4)
    81 02	// Input(2)	// (Data, Variable, Absolute)
    75 01	// Report Size(1)
    95 02	// Report Count(2)
    81 03	// Input(3)	// (Constant, Variable, Absolute)
    0B 01 00 01 00	// Usage(10001) - (BUTTON 1)
    A1 00	// Collection(0)
    0B 30 00 01 00	// Usage(10030) - (BUTTON 48)
    0B 31 00 01 00	// Usage(10031) - (BUTTON 49)
    0B 32 00 01 00	// Usage(10032) - (BUTTON 50)
    0B 35 00 01 00	// Usage(10035) - (BUTTON 53)
    15 00	// Logical Minimum(0)
    27 FF FF 00 00	// Logical maximum(ffff)
    75 10	// Report Size(10)
    95 04	// Report Count(4)
    81 02	// Input(2)	// (Data, Variable, Absolute)
    C0	// End Collection
  0B 39 00 01 00	// Usage(10039) - (BUTTON 57)
  15 00	// Logical Minimum(0)
  25 07	// Logical maximum(7)
  35 00	// Physical Minimum(0)
  46 3B 01	// Physical Maximum(13b)
  65 14	// Unit(14)
  75 04	// Report Size(4)
  95 01	// Report Count(1)
  81 02	// Input(2)	// (Data, Variable, Absolute)
  05 09	// Usage Page(9) - Button
  19 0F	// Usage Minimum(f) -  (BUTTON 15)
  29 12	// Usage Maximum(12) -  (BUTTON 18)
  15 00	// Logical Minimum(0)
  25 01	// Logical maximum(1)
  75 01	// Report Size(1)
  95 04	// Report Count(4)
  81 02	// Input(2)	// (Data, Variable, Absolute)
  75 08	// Report Size(8)
  95 34	// Report Count(34)
  81 03	// Input(3)	// (Constant, Variable, Absolute)
  06 00 FF	// Usage Page(ff00) - Vendor Defined
  85 21	// Report ID(21)
  09 01	// Usage(1) -
  75 08	// Report Size(8)
  95 3F	// Report Count(3f)
  81 03	// Input(3)	// (Constant, Variable, Absolute)
  85 81	// Report ID(81)
  09 02	// Usage(2) -
  75 08	// Report Size(8)
  95 3F	// Report Count(3f)
  81 03	// Input(3)	// (Constant, Variable, Absolute)
  85 01	// Report ID(1)
  09 03	// Usage(3) -
  75 08	// Report Size(8)
  95 3F	// Report Count(3f)
  91 83	// Output(83)	// (Constant, Variable, Absolute, Volatile)
  85 10	// Report ID(10)
  09 04	// Usage(4) -
  75 08	// Report Size(8)
  95 3F	// Report Count(3f)
  91 83	// Output(83)	// (Constant, Variable, Absolute, Volatile)
  85 80	// Report ID(80)
  09 05	// Usage(5) -
  75 08	// Report Size(8)
  95 3F	// Report Count(3f)
  91 83	// Output(83)	// (Constant, Variable, Absolute, Volatile)
  85 82	// Report ID(82)
  09 06	// Usage(6) -
  75 08	// Report Size(8)
  95 3F	// Report Count(3f)
  91 83	// Output(83)	// (Constant, Variable, Absolute, Volatile)
  C0	// End Collection
*** HID Device hdc1 57e: 2009 - connected ***
  manufacturer: Nintendo Co., Ltd.
  product: Pro Controller
  Serial: 000000000001
HID(1 : 10004): 81 01 00 03 1A 53 19 5C 5A A0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
                00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
END:
*** HID Device hdc1 - disconnected ***
*** Device HID1 - disconnected ***
Which shows us a lot of information, like it is a joystick...
From what you are showing I believe it calling your code with top usage: c0001 so Consummer controls or some such thing.

But does it give you information like 15 buttons, and the like. If so then one can use the HID code to parse the buttons and let you know which ones are in which state:
For examples of this you might look at mouse.cpp at the methods:

Code: 
void MouseController::hid_input_begin(uint32_t topusage, uint32_t type, int lgmin, int lgmax)
{
	// TODO: check if absolute coordinates
	hid_input_begin_ = true;
}

void MouseController::hid_input_data(uint32_t usage, int32_t value)
{
	//USBHDBGSerial.printf("Mouse: usage=%X, value=%d\n", usage, value);
	uint32_t usage_page = usage >> 16;
	usage &= 0xFFFF;
	if (usage_page == 9 && usage >= 1 && usage <= 8) {
		if (value == 0) {
			buttons &= ~(1 << (usage -1));
		} else {
			buttons |= (1 << (usage -1));
		}
	} else if (usage_page == 1) {
		switch (usage) {
		  case 0x30:
			mouseX = value;
			break;
		  case 0x31:
			mouseY = value;
			break;
		  case 0x32: // Apple uses this for horizontal scroll
			wheelH = value;
			break;
		  case 0x38:
			wheel = value;
			break;
		}
	} else if (usage_page == 12) {
		if (usage == 0x238) { // Microsoft uses this for horizontal scroll
			wheelH = value;
		}
	}
}

void MouseController::hid_input_end()
{
	if (hid_input_begin_) {
		mouseEvent = true;
		hid_input_begin_ = false;
	}
}
Where there are usage pages and usages, and many of these are defined the USB HID group. like in the above
Usage Page 1 is known as the generic desktop controls, and 0x30 under it is known as X (used a lot in mouse, joystick...)

Now as for you then outputting the bitmap that may take more investigating. That is I understand the generic stuff of it, which we discussed.
That it is sending the contents of a bitmap file (or blank), That it appears to break this up into two logical packets of data, each one has a packet header.

That part should be pretty straight forward to convert from Python to C++

But then it writes the two parts out using: self.device.write(payload + padding)
And we know that is trying to write 8181 bytes? Why 8191? Don't know. Does the device need it that size? Is it some limit within Python?

It then this calls through to: result = self.hidapi.hid_write(handle, bytes(data), len(data))
Which calls through some Python wrappers some system specific C libraries.

What I have then investigated what does the C++ hid libraries do?
which may be from this library https://github.com/libusb/hidapi

Somewhere along the line, someone will break this down to 64 byte USB packets.
What maybe is not clear is, is there any additional formatting of that data by the HID layer to send to the device?

I am guessing there may be. But again, just guessing.

But if the data is simply straight data, you might get away with simply sending 64 byte packets with 16 byte headers, i.e. 48 bytes payload.

Maybe something like:
Code: 
bool my_class::output_image(uint8_t key, uint8_t *image, uint16_t image_len) {
    // can I send 48 byte of data packets?
    #define PAGE_NUMBER 2
    #define LAST_PAGE 4
    uint8_t packet[64] =  {0x02, 0x01, 1, 0, 1 0, key + 1, 
                0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
    while (image_len) {
        uint8_t cb_payload = (image_len > 48)? 48 : image_len;
        memcpy(&packet[48], image, cb_payload);
        if (cb_payload <= 48) packet[LAST_PAGE] = 1;

        // loop until the driver can send - probably want timeout
        while (!driver_->sendPacket(packet, cb_payload + 16) ) ;

        // increment for the next packet.
        packet[PAGE_NUMBER]++;
        iamge += cb_payload;
        image_len -= cb_payload; 
    }
}
Note typed in on fly did not double check nor try to compile, so for sure probably issues...

But my guess is there may be a slight bit more wrapping of the data.
May look a little more, but ...
 
Hi, it is soon good night here :)

I had a stub issue on building the arrays, and really obvious one, but did not notice it.

That one is now fixed, but something strange remains. This is sending the image start. the first 64 bytes I think is correct, but the end of the second 64 bytes gets some garbage, but not always. Otherwise it is now looking as meant, but does not have the wanted result, colours on the button. (0x1F is image data)

Code: 
>>>USBHIDParser::out_data
HID_Input::hid_process_out_data: c0001
02 01 01 00 00 06 00 00 00 00 00 00 00 00 00 00 42 4D F6 3C 00 00 00 00 00 00 36 00 00 00 28 00
00 00 48 00 00 00 48 00 00 00 01 00 18 00 00 00 00 00 C0 3C 00 00 C4 0E 00 00 C4 0E 00 00 00 00 
>>>USBHIDParser::out_data
HID_Input::hid_process_out_data: c0001
00 00 00 00 00 00 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F
1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 01 00 00 00 01 00 00 00 40 00 00 00 30 21 00 20 



>>>USBHIDParser::out_data
HID_Input::hid_process_out_data: c0001
1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F
1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F 1F

Here is the current version https://drive.google.com/drive/folders/1-ErNjdhlZdlVRw2SPDu0DGUsuR6j4FKm?usp=share_link

Gets the button presses correctly, sending some data with button press (buttons 1 to 5), the default icon goes a way and balk screen (I think this is wanted) but do not get any the expected results.


Here is what Device info gives

Code: 
USB HID Device Info Program

This Sketch shows information about plugged in HID devices

*** You can control the output by simple character input to Serial ***
R - Turns on or off showing the raw data
C - Toggles showing changed data only on or off
<anything else> - toggles showing the Hid formatted breakdown of the data


USBDeviceInfo claim this=2000CAC8

****************************************
** Device Level **
  vid=FD9
  pid=60
  bDeviceClass = 0
  bDeviceSubClass = 0
  bDeviceProtocol = 0
09 04 00 00 02 03 00 00 00 09 21 11 01 00 01 22 0B 01 07 05 81 03 00 02 01 07 05 02 03 00 02 01 

USBDeviceInfo claim this=2000CAC8

****************************************
** Interface Level **
09 04 00 00 02 03 00 00 00 09 21 11 01 00 01 22 0B 01 07 05 81 03 00 02 01 07 05 02 03 00 02 01 
 bInterfaceNumber = 0
 number end points = 2
 bInterfaceClass =    3
 bInterfaceSubClass = 0
    HID
 bInterfaceProtocol = 0
report descriptor size = 267
  endpoint = 81
    attributes = 3 Interrupt
    size = 512
    interval = 1
  endpoint = 2
    attributes = 3 Interrupt
    size = 512
    interval = 1
*** Device HID1 fd9: 60 - connected ***
  manufacturer: Elgato Systems
  product: Stream Deck
  Serial: AL01H1A08927
HIDDumpController Claim: fd9:60 usage: c0001 - Yes
*** HID Device hdc1 fd9: 60 - connected ***
  manufacturer: Elgato Systems
  product: Stream Deck
  Serial: AL01H1A08927

And hear what my sketch prints at start. first prints the two pages of image data (for testing and does not work) after the device info.
Code: 
*START

Page1 
2, 1, 1, 0, 0, 6, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 42, 4D, F6, 3C, 0, 0, 0, 0, 0, 0, 36, 0, 0, 0, 28, 0, 0, 0, 48, 0, 0, 0, 48, 0, 0, 0, 1, 0, 18, 0, 0, 0, 0, 0, C0, 3C, 0, 0, C4, E, 0, 0, C4, E, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 1F, 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Page2 
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***ZZZZZZZZZ** Device hidDev1 fd9: 60 - connected ***
  manufacturer: Elgato Systems
  product: Stream Deck
  Serial: AL01H1A08927
HID_Input Claim: fd9:60 usage: c0001 - Yes
***XXXXXXXXXXXXX** HID Device hidin1 fd9: 60 - connected ***
  manufacturer: Elgato Systems
  product: Stream Deck
  Serial: AL01H1A08927
 
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WOW, I am very happy of these couple of dots on the buttons I was sending the information to, So the devise receives the data, hopefully just image formatting problem (now it should be couple of colours filling the button)

View attachment 29701

For who is interested, here is also good info about the Steam Deck control https://github.com/muesli/streamdeck/blob/master/streamdeck.go

Now need to figure out how to draw an actual image, it should be 72x72 pixel BMP image. https://en.wikipedia.org/wiki/BMP_file_format
 
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Is the hidDev1.sendPacket(DATA_OUT,Bsend); sending just the wanted bytes or some frame structure also? I get the 2 short lines, but that's all for now. I get those even if I send just few 64 byte packets from both pages, i.e just sending the headers and some data from both pages.
 
Glad you are getting something!

I have a few more things that I would try if it were me to see if it works.

Which also hopefully will make it a lot simpler.

My quick look through some of the HID stuff on the library I mentioned, my guess is there is a hid report descriptor and there is an output report 2, which
probably had 8191 bytes of data plus the one byte for report ID. so 8192 bytes are transferred, each time.

Currently by default the HID code is setup to transfer using 64 byte transfers.
However I believe the underlying USB code can take care of sending 8192 bytes.

So suppose at the start of your sketch you allocate two 8192 buffers (can work with just one, but would only allow one transfer at a time)...

something like:
At the start:
Code: 
#include <USBHost_t36.h>

// KJE
DMAMEM uint8_t hid_tx_buffer1[8192];
DMAMEM uint8_t hid_tx_buffer2[8192];

When you class claims the HID Parser, tell it to use these buffers
Code: 
  // Set Large Driver. (KJE)
  driver_->setTXBuffers(hid_tx_buffer1, hid_tx_buffer1, 255 /*sizeof(hid_tx_buffer1)*/);

  Serial.println(" - Yes");
  return CLAIM_INTERFACE;  // We want

Note: when possible, you should use the driver_-> instead of hard coding which HIDParser as your sketch could grow to use more than one...

Note: when I added this member function I should have allowed the CB parameter to be uint16_t instead of uint8_t... But we don't use it
anyway...


Then when you try to output each half:
Code: 
#if 1
            // KJE - not should use driver_-> but this is not part of the class
            if(Page == 0) SendStatus = hidDev1.sendPacket(IMG_1ST_HALF,8192);
            else SendStatus = hidDev1.sendPacket(IMG_2ND_HALF,8192);
            if(SendStatus == 1) { 
#else           
            if(PacketCounter<127) Bsend = 64; else Bsend = 63;
            
            if(Page == 0) for (uint16_t i = 0;  i < Bsend;   i++) {DATA_OUT[i] = IMG_1ST_HALF[PacketCounter*64+i]; }
            if(Page == 1) for (uint16_t i = 0;  i < Bsend;   i++) {DATA_OUT[i] = IMG_2ND_HALF[PacketCounter*64+i]; } 
                 
            SendStatus = driver_->sendPacket(DATA_OUT,Bsend); 

            if(SendStatus == 1 ) {  PacketCounter++;  } 
            

            if(PacketCounter >127 && SendStatus == 1) { 
#endif
So this should try to send the whole half as one USB Transfer. Note the actual transfer code will break this up into chunks and the like, but will be interesting to see if the other side likes it or not.
 
Thanks, I will test during the weekend.

Withe the current method I noted that minimum 300 microsecond delay between the 64 bytes is needed. I think that is more Teensy needing it not polling too often if available for send?
 
Oops forgot to mention about loading bitmaps...

A variety of ways to do so: For example, if you look into the many of the TFT display drivers that come with Teensyduino, such as ILI9341_t3

You will see a couple of interesting examples:

like: SPITFTBMP.ino -
There is a function bmpDraw - which takes the name of a file that is hopefully stored on an SD Card.
It opens up the file parses the data and then tries to draw the image onto an ILI9341 display.

You will notice that the first thing it checks is:
Code: 
  // Parse BMP header
  if(read16(bmpFile) == 0x4D42) { // BMP signature
Which I mentioned earlier as to figuring that blank image was BMP format...
In your case I think you simply would need to read the whole file into memory and then call your functions to send it to the device.
You could potentially only read in half of it at a time, to save memory...

Then another example is the pictureEmbed.ino - that has a file contained in it (picture.c) that an external converter used to convert an image file into the
header. However in this case the images were converted to 16 bit colors instead of 24 bit. Unclear to me if your device will allow them.
Also it stripped off the header data, it only has the image. The converter was/is up at: http://www.rinkydinkelectronics.com/t_imageconverter565.php
But I am sure there are others.
 
Thanks

I did look already a bit into the BMP image format, and if it is according the header, it should be pretty straight forward, just RGB 3xbyte for each pixel after the header, especially as 72 pixels per row is multiple of 4, so no padding needed per row.

Code: 
42	ID field (42h, 4Dh)	0	0
4D	ID field (42h, 4Dh)	1	1
F6	Size of the BMP file	2	2
3C	Size of the BMP file	3	3
0	Size of the BMP file	4	4
0	Size of the BMP file	5	5
0	Application specific	6	6
0	Application specific	7	7
0	Application specific	8	8
0	Application specific	9	9
36	Offset where the pixel array (bitmap data) can be found	10	A
0	Offset where the pixel array (bitmap data) can be found	11	B
0	Offset where the pixel array (bitmap data) can be found	12	C
0	Offset where the pixel array (bitmap data) can be found	13	D
28	Number of bytes in the DIB header (from this point)	14	E
0	Number of bytes in the DIB header (from this point)	15	F
0	Number of bytes in the DIB header (from this point)	16	10
0	Number of bytes in the DIB header (from this point)	17	11
48	Width of the bitmap in pixels	18	12
0	Width of the bitmap in pixels	19	13
0	Width of the bitmap in pixels	20	14
0	Width of the bitmap in pixels	21	15
48	Height of the bitmap in pixels	22	16
0	Height of the bitmap in pixels	23	17
0	Height of the bitmap in pixels	24	18
0	Height of the bitmap in pixels	25	19
1	Number of color planes being used	26	1A
0	Number of color planes being used	27	1B
18	Number of bits per pixel	28	1C
0	Number of bits per pixel	29	1D
0	BI_BITFIELDS, no pixel array compression used	30	1E
0	BI_BITFIELDS, no pixel array compression used	31	1F
0	BI_BITFIELDS, no pixel array compression used	32	20
0	BI_BITFIELDS, no pixel array compression used	33	21
C0	Size of the raw bitmap data (including padding)	34	22
3C	Size of the raw bitmap data (including padding)	35	23
0	Size of the raw bitmap data (including padding)	36	24
0	Size of the raw bitmap data (including padding)	37	25
C4	pixels/metre horizontal	38	26
E	pixels/metre horizontal	39	27
0	pixels/metre horizontal	40	28
0	pixels/metre horizontal	41	29
C4	pixels/metre vertical	42	2A
E	pixels/metre vertical	43	2B
0	pixels/metre vertical	44	2C
0	pixels/metre vertical	45	2D
0	Number of colors in the palette	46	2E
0	Number of colors in the palette	47	2F
0	Number of colors in the palette	48	30
0	Number of colors in the palette	49	31
0	0 means all colors are important	50	32
0	0 means all colors are important	51	33
0	0 means all colors are important	52	34
0	0 means all colors are important	53	35

The device gets the message at least partially right as it puts the information on correct button. Must look still on the page sizes, but suspect a bit that maybe the problem is that on the new FW the image format is jpg as on many other their devices. That would be a bit more challenging as need dynamically change the display when values are adjusted. (but for one button at the time only)

(the given header looks exactly as the example 1 in here https://en.wikipedia.org/wiki/BMP_file_format)

What needs some investigation is Size of the raw bitmap data (including padding) 0x3CC0 = 15552 and as =3x72x72 so there should not be any padding, so with the above header including padding 15606 and half of that 7803 + the page split header 16 bytes, so one page should be 7819 bytes, so what is the IMAGE_REPORT_LENGTH = 8191. the question maybe is should first page be 8191 and second 7447 bytes
 
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I tried the buffers as you provided above, with the change of changing the second buffer number to 2 before that it was sending the second? page twice (why not first)

// Set Large Driver. (KJE)
driver_->setTXBuffers(hid_tx_buffer1, hid_tx_buffer2, 255 /*sizeof(hid_tx_buffer1)*/);

by the
>>>USBHIDParser::eek:ut_data
HID_Input::hid_process_out_data: c0001

it looks like it is sending correct data but does not make any update to the button, so device is not receiving it the same as if sending 64 byte packets.

With the 64 byte packets I noted that at least 300 microsecond delay between the packets is needed. With that it updates the button consistently, but just the short lines.

Code: 
if(DrawImage == true && (micros() -PacketTimer) > WaitTime ){
        WaitTime = 300;//0.3 ms between pakets
        PacketTimer = micros();
        
        Serial.println();


              // KJE - not should use driver_-> but this is not part of the class
            if(Page == 0) SendStatus = hidDev1.sendPacket(IMG_1ST_HALF,8192);
            if(Page == 1) SendStatus = hidDev1.sendPacket(IMG_2ND_HALF,8192);
            if(SendStatus == 1) { 

           /*
            if(PacketCounter<127) Bsend = 64; else Bsend = 63;
            
            if(Page == 0) for (uint16_t i = 0;  i < Bsend;   i++) {DATA_OUT[i] = IMG_1ST_HALF[PacketCounter*64+i]; }
            if(Page == 1) for (uint16_t i = 0;  i < Bsend;   i++) {DATA_OUT[i] = IMG_2ND_HALF[PacketCounter*64+i]; } 
                 
            SendStatus = hidDev1.sendPacket(DATA_OUT,Bsend); 

            if(SendStatus == 1 ) {  PacketCounter++;  } 
            

            if(PacketCounter >127 && SendStatus == 1) { 
              */  
                WaitTime = 300;//0.3 ms between pages
                Page++;   
                        
            
                Serial.println();
                Serial.println(Page);
                Serial.println(PacketCounter-1);
                Serial.println(Bsend);
                Serial.println((PacketCounter-1)*64+Bsend);
                Serial.println();
                PacketCounter = 0;
                SendStatus = 0;
                }


                if(Page == 2 )  { DrawImage = false; Page = 0; }
            }

I did not get this, what does it mean "Note: when I added this member function I should have allowed the CB parameter to be uint16_t instead of uint8_t... But we don't use it
anyway..." on the OnReceiveHidData ? ah on the void USBHIDParser::setTXBuffers(uint8_t *buffer1, uint8_t *buffer2, uint8_t cb) looking this how about the buffer size? or is that just telling the buffer is uint8_t

Note: with the

// Set Large Driver. (KJE)
// driver_->.setTXBuffers(hid_tx_buffer1, hid_tx_buffer2, 255 /*sizeof(hid_tx_buffer1)*/);

the 64 byte does not work either, why is that, commenting it out and works the same as before.

Also "Note: when possible, you should use the driver_-> instead of hard coding which HIDParser as your sketch could grow to use more than one... " what should I do thew get rid of the 'driver_' was not declared in this scope to use it here SendStatus = hidDev1.sendPacket(DATA_OUT,Bsend);
 
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YES!

Exactly as it should be, the first part of image noise and the second part white

View attachment 29703

The problem was I defined the buffers first outside the class, after putting them here it works (but does not accept the DMAMEM)

Code: 
class HID_Input : public USBHIDInput {
public:

uint8_t hid_tx_buffer1[8192];
uint8_t hid_tx_buffer2[8192];

Big thanks, this is awesome.

The good thing of banging the head to the wall for long time like I have done with this, it feels so good when the wall finally gives up :)
 
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I was sort of curious if DMAMEM would work here or not. Yes you can not directly specify that with a member variable of a class as a different storage area...
You can do it with static member variables, but different topic.

Glad it is starting to work
 
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