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/*
* 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.io/license.html
*/
#ifndef _GINPUT_LLD_MOUSE_BOARD_H
#define _GINPUT_LLD_MOUSE_BOARD_H
#include <stdio.h>
#include <system.h>
#include "i2c_opencores.h"
#define FT5316_I2C_SLAVE_ADDRESS 0x38
// Resolution and Accuracy Settings
#define GMOUSE_FT5316_PEN_CALIBRATE_ERROR 8
#define GMOUSE_FT5316_PEN_CLICK_ERROR 6
#define GMOUSE_FT5316_PEN_MOVE_ERROR 4
#define GMOUSE_FT5316_FINGER_CALIBRATE_ERROR 14
#define GMOUSE_FT5316_FINGER_CLICK_ERROR 18
#define GMOUSE_FT5316_FINGER_MOVE_ERROR 14
// How much extra data to allocate at the end of the GMouse structure for the board's use
#define GMOUSE_FT5316_BOARD_DATA_SIZE 0
// Set this to GFXON if you want self-calibration.
// NOTE: This is not as accurate as real calibration.
// It requires the orientation of the touch panel to match the display.
// It requires the active area of the touch panel to exactly match the display size.
#define GMOUSE_FT5316_SELF_CALIBRATE GFXON
static unsigned int device_write(unsigned char device_address, unsigned char sub_address, unsigned char wdata)
{
I2C_start(I2C_OPENCORES_0_BASE, device_address, 0); // Device address in write mode
I2C_write(I2C_OPENCORES_0_BASE, sub_address, 0); // Set sub address to read register
I2C_write(I2C_OPENCORES_0_BASE, wdata, 1); // Set write register
return 1;
}
static unsigned int device_read(unsigned char device_address, unsigned char sub_address)
{
unsigned int rdata;
I2C_start(I2C_OPENCORES_0_BASE, device_address, 0); // Device address in write mode
rdata = I2C_write(I2C_OPENCORES_0_BASE, sub_address, 0); // Set sub address to read register.
I2C_start(I2C_OPENCORES_0_BASE, device_address, 1); // Send start again but this time in read mode
rdata = I2C_read(I2C_OPENCORES_0_BASE, 1); // Read the register and send stop
return rdata;
}
static unsigned int device_read_16(unsigned char device_address, unsigned char sub_address)
{
unsigned int rdata_l;
unsigned int rdata_h;
I2C_start(I2C_OPENCORES_0_BASE, device_address, 0); // Eccelerometer address in write mode
rdata_l = I2C_write(I2C_OPENCORES_0_BASE, sub_address, 0); // Set sub address to read register.
I2C_start(I2C_OPENCORES_0_BASE, device_address, 1); // Send start again but this time in read mode
rdata_l = I2C_read(I2C_OPENCORES_0_BASE, 0); // Read the register and MACK
rdata_h = I2C_read(I2C_OPENCORES_0_BASE, 1); // Read the next register and send stop
return (0xFFFF & ((rdata_h << 8) | rdata_l));
}
static gBool init_board(GMouse* m, unsigned instance)
{
(void)m;
(void)instance;
I2C_init(I2C_OPENCORES_0_BASE, 50000000, 400000);
return gTrue;
}
static void write_reg(GMouse* m, uint8_t reg, uint8_t val)
{
(void)m;
device_write(FT5316_I2C_SLAVE_ADDRESS, reg, val);
}
static uint8_t read_byte(GMouse* m, uint8_t reg)
{
(void)m;
uint8_t ret = 0;
ret = (uint8_t)device_read(FT5316_I2C_SLAVE_ADDRESS, reg);
return ret;
}
static uint16_t read_word(GMouse* m, uint8_t reg)
{
(void)m;
uint16_t ret = 0;
ret = (uint16_t)device_read(FT5316_I2C_SLAVE_ADDRESS, reg);
return ret;
}
#endif /* _GINPUT_LLD_MOUSE_BOARD_H */
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