I2C expander GINPUT

[El_Andry]

How connect I2C expander (example: MCP23017 ) to GINPUT module with IRQ ???

thx:)

[Joel Bodenmann]

You have to write what's called a Toggle driver for the GINPUT module.

There's no way to register an IRQ in the upper levels. You'll find information about this on this forum. It's still possible to hack it into the GINPUT driver though.

[El_Andry]

Yes. are possible and so

[El_Andry]

how to connect toggle to I2C ??

[Joel Bodenmann]

You'll handle the I2C stuff in the driver's board file just like with GDISP or any other driver stuff in µGFX.

[El_Andry]

You mean this ???? :

example of ginput_lld_toggle_board.h

#ifndef _GDISP_LLD_TOGGLE_BOARD_H
#define _GDISP_LLD_TOGGLE_BOARD_H

static bool_t init_board(GToggle* t, unsigned instance) {
	
}

static GFXINLINE void aquire_bus(GToggle* m) {
    (void)m;
}

static GFXINLINE void release_bus(GToggle* m) {
    (void)m;
}

static void write_reg(GToggle* m, uint8_t reg, uint8_t val) {
    (void)m;

    
}

static uint8_t read_byte(GToggle* m, uint8_t reg) {
    (void)m;
    
    return 0;
}

static uint16_t read_word(GToggle* m, uint8_t reg) {
	(void)m;
	
	return 0;
}



#endif /* _GDISP_LLD_TOGGLE_BOARD_H */

this work  ???

 

 

 

[inmarket]

Yep