169 lines
6.6 KiB
C
169 lines
6.6 KiB
C
#ifndef __FT6X06_H
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/*
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* Copyright © 2020 Wolfgang Christl
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* Permission is hereby granted, free of charge, to any person obtaining a copy of this
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* software and associated documentation files (the “Software”), to deal in the Software
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* without restriction, including without limitation the rights to use, copy, modify, merge,
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* publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons
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* to whom the Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all copies or
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* substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
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* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
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* PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
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* FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#define __FT6X06_H
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#include <stdint.h>
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#include <stdbool.h>
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#ifdef LV_LVGL_H_INCLUDE_SIMPLE
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#include "lvgl.h"
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#else
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#include "lvgl/lvgl.h"
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define FT6236_I2C_SLAVE_ADDR 0x38
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/* Maximum border values of the touchscreen pad that the chip can handle */
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#define FT6X36_MAX_WIDTH ((uint16_t)800)
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#define FT6X36_MAX_HEIGHT ((uint16_t)480)
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/* Max detectable simultaneous touch points */
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#define FT6X36_MAX_TOUCH_PNTS 2
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/* Register of the current mode */
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#define FT6X36_DEV_MODE_REG 0x00
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/* Possible modes as of FT6X36_DEV_MODE_REG */
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#define FT6X36_DEV_MODE_WORKING 0x00
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#define FT6X36_DEV_MODE_FACTORY 0x04
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#define FT6X36_DEV_MODE_MASK 0x70
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#define FT6X36_DEV_MODE_SHIFT 4
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/* Gesture ID register */
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#define FT6X36_GEST_ID_REG 0x01
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/* Possible values returned by FT6X36_GEST_ID_REG */
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#define FT6X36_GEST_ID_NO_GESTURE 0x00
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#define FT6X36_GEST_ID_MOVE_UP 0x10
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#define FT6X36_GEST_ID_MOVE_RIGHT 0x14
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#define FT6X36_GEST_ID_MOVE_DOWN 0x18
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#define FT6X36_GEST_ID_MOVE_LEFT 0x1C
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#define FT6X36_GEST_ID_ZOOM_IN 0x48
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#define FT6X36_GEST_ID_ZOOM_OUT 0x49
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/* Status register: stores number of active touch points (0, 1, 2) */
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#define FT6X36_TD_STAT_REG 0x02
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#define FT6X36_TD_STAT_MASK 0x0F
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#define FT6X36_TD_STAT_SHIFT 0x00
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/* Touch events */
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#define FT6X36_TOUCH_EVT_FLAG_PRESS_DOWN 0x00
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#define FT6X36_TOUCH_EVT_FLAG_LIFT_UP 0x01
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#define FT6X36_TOUCH_EVT_FLAG_CONTACT 0x02
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#define FT6X36_TOUCH_EVT_FLAG_NO_EVENT 0x03
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#define FT6X36_TOUCH_EVT_FLAG_SHIFT 6
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#define FT6X36_TOUCH_EVT_FLAG_MASK (3 << FT6X36_TOUCH_EVT_FLAG_SHIFT)
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#define FT6X36_MSB_MASK 0x0F
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#define FT6X36_MSB_SHIFT 0
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#define FT6X36_LSB_MASK 0xFF
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#define FT6X36_LSB_SHIFT 0
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#define FT6X36_P1_XH_REG 0x03
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#define FT6X36_P1_XL_REG 0x04
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#define FT6X36_P1_YH_REG 0x05
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#define FT6X36_P1_YL_REG 0x06
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#define FT6X36_P1_WEIGHT_REG 0x07 /* Register reporting touch pressure - read only */
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#define FT6X36_TOUCH_WEIGHT_MASK 0xFF
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#define FT6X36_TOUCH_WEIGHT_SHIFT 0
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#define FT6X36_P1_MISC_REG 0x08 /* Touch area register */
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#define FT6X36_TOUCH_AREA_MASK (0x04 << 4) /* Values related to FT6X36_Pn_MISC_REG */
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#define FT6X36_TOUCH_AREA_SHIFT 0x04
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#define FT6X36_P2_XH_REG 0x09
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#define FT6X36_P2_XL_REG 0x0A
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#define FT6X36_P2_YH_REG 0x0B
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#define FT6X36_P2_YL_REG 0x0C
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#define FT6X36_P2_WEIGHT_REG 0x0D
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#define FT6X36_P2_MISC_REG 0x0E
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/* Threshold for touch detection */
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#define FT6X36_TH_GROUP_REG 0x80
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#define FT6X36_THRESHOLD_MASK 0xFF /* Values FT6X36_TH_GROUP_REG : threshold related */
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#define FT6X36_THRESHOLD_SHIFT 0
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#define FT6X36_TH_DIFF_REG 0x85 /* Filter function coefficients */
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#define FT6X36_CTRL_REG 0x86 /* Control register */
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#define FT6X36_CTRL_KEEP_ACTIVE_MODE 0x00 /* Will keep the Active mode when there is no touching */
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#define FT6X36_CTRL_KEEP_AUTO_SWITCH_MONITOR_MODE 0x01 /* Switching from Active mode to Monitor mode automatically when there is no touching */
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#define FT6X36_TIME_ENTER_MONITOR_REG 0x87 /* The time period of switching from Active mode to Monitor mode when there is no touching */
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#define FT6X36_PERIOD_ACTIVE_REG 0x88 /* Report rate in Active mode */
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#define FT6X36_PERIOD_MONITOR_REG 0x89 /* Report rate in Monitor mode */
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#define FT6X36_RADIAN_VALUE_REG 0x91 /* The value of the minimum allowed angle while Rotating gesture mode */
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#define FT6X36_OFFSET_LEFT_RIGHT_REG 0x92 /* Maximum offset while Moving Left and Moving Right gesture */
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#define FT6X36_OFFSET_UP_DOWN_REG 0x93 /* Maximum offset while Moving Up and Moving Down gesture */
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#define FT6X36_DISTANCE_LEFT_RIGHT_REG 0x94 /* Minimum distance while Moving Left and Moving Right gesture */
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#define FT6X36_DISTANCE_UP_DOWN_REG 0x95 /* Minimum distance while Moving Up and Moving Down gesture */
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#define FT6X36_LIB_VER_H_REG 0xA1 /* High 8-bit of LIB Version info */
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#define FT6X36_LIB_VER_L_REG 0xA2 /* Low 8-bit of LIB Version info */
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#define FT6X36_CHIPSELECT_REG 0xA3 /* 0x36 for ft6236; 0x06 for ft6206 */
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#define FT6X36_POWER_MODE_REG 0xA5
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#define FT6X36_FIRMWARE_ID_REG 0xA6
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#define FT6X36_RELEASECODE_REG 0xAF
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#define FT6X36_PANEL_ID_REG 0xA8
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#define FT6X36_OPMODE_REG 0xBC
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typedef struct {
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bool inited;
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} ft6x36_status_t;
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/**
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* @brief Initialize for FT6x36 communication via I2C
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* @param dev_addr: Device address on communication Bus (I2C slave address of FT6X36).
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* @retval None
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*/
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void ft6x06_init(uint16_t dev_addr);
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uint8_t ft6x36_get_gesture_id();
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/**
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* @brief Get the touch screen X and Y positions values. Ignores multi touch
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* @param drv:
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* @param data: Store data here
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* @retval Always false
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*/
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bool ft6x36_read(lv_indev_drv_t *drv, lv_indev_data_t *data);
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#ifdef __cplusplus
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}
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#endif
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#endif /* __FT6X06_H */
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