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