button matrix and Jog Dial

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kenkenlau
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25 May 2013 18:32 #10301 by kenkenlau

button matrix and Jog Dial was created by kenkenlau

I am looking into the tx_buttons.c and quite confusing about the buttonmap[] declare. In Eclipse it say BUT_LEFT unresolved......dont know where BUT_XXXX are declared.

And if I wish to add jog dial support, am I looking at the right place?

Thanks

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rbe2012
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So much to do, so little time...

25 May 2013 18:59 #10302 by rbe2012

Replied by rbe2012 on topic button matrix and Jog Dial

Look into the capabilities.h - there are the buttons defined. The construct used there was not easy to understand for me, but it is quite brilliant: the capabilities.h is included in other files where a "#define"-directive tells what to do with the information: the buttons are defined in inputs.c:

const char *INPUT_ButtonName(u8 button)
{
    if (! button) {
        return _tr("None");
    }
    #define BUTTONDEF(x) case BUT_##x : return BUTNAME_##x;
    switch(button) {
        #include "capabilities.h"
    };
    #undef BUTTONDEF
    return "";
}

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rbe2012
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So much to do, so little time...

25 May 2013 19:01 #10303 by rbe2012

Replied by rbe2012 on topic button matrix and Jog Dial

Oh, for a jog dial don't you need two input lines? Aren't they phase-shifted to recognize the direction? Or do you mean something else?

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kenkenlau
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25 May 2013 19:30 #10304 by kenkenlau

Replied by kenkenlau on topic button matrix and Jog Dial

yes, phase shifted for direction. plus a push in button.

So i think need to modify some code to detect the phase. In assembly, it is very simple with a -ve edge IRQ

EXINT1_ISR:		//Update_JogAB via IRQ
	push	PSW
	mov		C, port_JogB
	mov		bit_JogA, C
	cpl		C
	mov		bit_JogB, C
	pop		PSW
reti

but in C++ I am still learning how to implement it.
Worst case is adding a tiny MCU to feed in the button matrix, but I think its a stupid idea.

If the code is done, I may build a 3D printing button that can replace the ENT button. so that the ENT button can roll and press.

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kenkenlau
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25 May 2013 19:33 #10305 by kenkenlau

Replied by kenkenlau on topic button matrix and Jog Dial

rbe2012 wrote: Oh, for a jog dial don't you need two input lines? Aren't they phase-shifted to recognize the direction? Or do you mean something else?

using this one.

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button matrix and Jog Dial

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