ugfx/drivers/ginput/touch/FT5336/gmouse_lld_FT5336.c

/*
 * This file is subject to the terms of the GFX License. If a copy of
 * the license was not distributed with this file, you can obtain one at:
 *
 *              http://ugfx.org/license.html
 */

#include "gfx.h"

#if GFX_USE_GINPUT && GINPUT_NEED_MOUSE

#define GMOUSE_DRIVER_VMT		GMOUSEVMT_FT5336
#include "src/ginput/ginput_driver_mouse.h"

// Get the hardware interface
#include "gmouse_lld_FT5336_board.h"

// Hardware definitions
#include "drivers/ginput/touch/FT5336/ft5336.h"

static bool_t ft5336Init(GMouse* m, unsigned driverinstance)
{
	// Initialize the board stuff
	if (!init_board(m, driverinstance)) {
		return FALSE;
	}

	// We need at least 200 ms worth of delay here...
	gfxSleepMilliseconds(200);

	// Check Chip ID
	if (read_byte(m, FT5336_CHIP_ID_REG) != FT5336_ID_VALUE) {
		return FALSE;
	}

	// Disable interrupts. We use this chip in polling mode
	write_reg(m, FT5336_GMODE_REG, (FT5336_G_MODE_INTERRUPT_POLLING & (FT5336_G_MODE_INTERRUPT_MASK >> FT5336_G_MODE_INTERRUPT_SHIFT)) << FT5336_G_MODE_INTERRUPT_SHIFT);

/*
	// Init default values. (From NHD-3.5-320240MF-ATXL-CTP-1 datasheet)
	// Valid touching detect threshold
	write_reg(m, FT5336_TH_GROUP_REG, 0x16);

	// Touch difference threshold
	write_reg(m, FT5336_TH_DIFF_REG, 0xA0);

	// Delay to enter 'Monitor' status (s)
	write_reg(m, FT5336_TIMEENTERMONITOR_REG, 0x0A);

	// Period of 'Active' status (ms)
	write_reg(m, FT5336_PERIODACTIVE_REG, 0x06);

	// Timer to enter 'idle' when in 'Monitor' (ms)
	write_reg(m, FT5336_PERIODMONITOR_REG, 0x28);
*/
	return TRUE;
}

static bool_t ft5336ReadXYZ(GMouse* m, GMouseReading* pdr)
{
	// Assume not touched.
	pdr->buttons = 0;
	pdr->z = 0;

	// Only take a reading if exactly one touch contact point
	if (read_byte(m, FT5336_TD_STAT_REG) == 1) {
		// Get and return X, Y an Z values
		pdr->y = (coord_t)(read_word(m, FT5336_P1_XH_REG) & 0x0FFF);
		pdr->x = (coord_t)(read_word(m, FT5336_P1_YH_REG) & 0x0FFF);
		pdr->z = 1;
	}

	return TRUE;
}

const GMouseVMT const GMOUSE_DRIVER_VMT[1] = {{
	{
		GDRIVER_TYPE_TOUCH,
		GMOUSE_VFLG_TOUCH | GMOUSE_VFLG_ONLY_DOWN | GMOUSE_VFLG_POORUPDOWN,
		sizeof(GMouse) + GMOUSE_FT5336_BOARD_DATA_SIZE,
		_gmouseInitDriver,
		_gmousePostInitDriver,
		_gmouseDeInitDriver
	},
	1,				// z_max - (currently?) not supported
	0,				// z_min - (currently?) not supported
	1,				// z_touchon
	0,				// z_touchoff
	{				// pen_jitter
		GMOUSE_FT5336_PEN_CALIBRATE_ERROR,			// calibrate
		GMOUSE_FT5336_PEN_CLICK_ERROR,				// click
		GMOUSE_FT5336_PEN_MOVE_ERROR				// move
	},
	{				// finger_jitter
		GMOUSE_FT5336_FINGER_CALIBRATE_ERROR,		// calibrate
		GMOUSE_FT5336_FINGER_CLICK_ERROR,			// click
		GMOUSE_FT5336_FINGER_MOVE_ERROR				// move
	},
	ft5336Init, 	// init
	0,				// deinit
	ft5336ReadXYZ,	// get
	0,				// calsave
	0				// calload
}};

#endif /* GFX_USE_GINPUT && GINPUT_NEED_MOUSE */