183 lines
6.9 KiB
C
183 lines
6.9 KiB
C
#ifndef __FT6X06_H
|
|
/*
|
|
* Copyright © 2020 Wolfgang Christl
|
|
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy of this
|
|
* software and associated documentation files (the “Software”), to deal in the Software
|
|
* without restriction, including without limitation the rights to use, copy, modify, merge,
|
|
* publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons
|
|
* to whom the Software is furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in all copies or
|
|
* substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
|
|
* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
|
|
* PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
|
|
* FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
|
|
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
|
* SOFTWARE.
|
|
*/
|
|
|
|
#define __FT6X06_H
|
|
|
|
#include <stdint.h>
|
|
#include <stdbool.h>
|
|
#if CONFIG_LV_FT6X36_COORDINATES_QUEUE
|
|
#include "freertos/FreeRTOS.h"
|
|
#include "freertos/queue.h"
|
|
#endif
|
|
#ifdef LV_LVGL_H_INCLUDE_SIMPLE
|
|
#include "lvgl.h"
|
|
#else
|
|
#include "lvgl/lvgl.h"
|
|
#endif
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
#define FT6236_I2C_SLAVE_ADDR 0x38
|
|
|
|
/* Maximum border values of the touchscreen pad that the chip can handle */
|
|
#define FT6X36_MAX_WIDTH ((uint16_t)800)
|
|
#define FT6X36_MAX_HEIGHT ((uint16_t)480)
|
|
|
|
/* Max detectable simultaneous touch points */
|
|
#define FT6X36_MAX_TOUCH_PNTS 2
|
|
|
|
/* Register of the current mode */
|
|
#define FT6X36_DEV_MODE_REG 0x00
|
|
|
|
/* Possible modes as of FT6X36_DEV_MODE_REG */
|
|
#define FT6X36_DEV_MODE_WORKING 0x00
|
|
#define FT6X36_DEV_MODE_FACTORY 0x04
|
|
|
|
#define FT6X36_DEV_MODE_MASK 0x70
|
|
#define FT6X36_DEV_MODE_SHIFT 4
|
|
|
|
/* Gesture ID register */
|
|
#define FT6X36_GEST_ID_REG 0x01
|
|
|
|
/* Possible values returned by FT6X36_GEST_ID_REG */
|
|
#define FT6X36_GEST_ID_NO_GESTURE 0x00
|
|
#define FT6X36_GEST_ID_MOVE_UP 0x10
|
|
#define FT6X36_GEST_ID_MOVE_RIGHT 0x14
|
|
#define FT6X36_GEST_ID_MOVE_DOWN 0x18
|
|
#define FT6X36_GEST_ID_MOVE_LEFT 0x1C
|
|
#define FT6X36_GEST_ID_ZOOM_IN 0x48
|
|
#define FT6X36_GEST_ID_ZOOM_OUT 0x49
|
|
|
|
/* Status register: stores number of active touch points (0, 1, 2) */
|
|
#define FT6X36_TD_STAT_REG 0x02
|
|
#define FT6X36_TD_STAT_MASK 0x0F
|
|
#define FT6X36_TD_STAT_SHIFT 0x00
|
|
|
|
/* Touch events */
|
|
#define FT6X36_TOUCH_EVT_FLAG_PRESS_DOWN 0x00
|
|
#define FT6X36_TOUCH_EVT_FLAG_LIFT_UP 0x01
|
|
#define FT6X36_TOUCH_EVT_FLAG_CONTACT 0x02
|
|
#define FT6X36_TOUCH_EVT_FLAG_NO_EVENT 0x03
|
|
|
|
#define FT6X36_TOUCH_EVT_FLAG_SHIFT 6
|
|
#define FT6X36_TOUCH_EVT_FLAG_MASK (3 << FT6X36_TOUCH_EVT_FLAG_SHIFT)
|
|
|
|
#define FT6X36_MSB_MASK 0x0F
|
|
#define FT6X36_MSB_SHIFT 0
|
|
#define FT6X36_LSB_MASK 0xFF
|
|
#define FT6X36_LSB_SHIFT 0
|
|
|
|
#define FT6X36_P1_XH_REG 0x03
|
|
#define FT6X36_P1_XL_REG 0x04
|
|
#define FT6X36_P1_YH_REG 0x05
|
|
#define FT6X36_P1_YL_REG 0x06
|
|
|
|
#define FT6X36_P1_WEIGHT_REG 0x07 /* Register reporting touch pressure - read only */
|
|
#define FT6X36_TOUCH_WEIGHT_MASK 0xFF
|
|
#define FT6X36_TOUCH_WEIGHT_SHIFT 0
|
|
|
|
#define FT6X36_P1_MISC_REG 0x08 /* Touch area register */
|
|
|
|
#define FT6X36_TOUCH_AREA_MASK (0x04 << 4) /* Values related to FT6X36_Pn_MISC_REG */
|
|
#define FT6X36_TOUCH_AREA_SHIFT 0x04
|
|
|
|
#define FT6X36_P2_XH_REG 0x09
|
|
#define FT6X36_P2_XL_REG 0x0A
|
|
#define FT6X36_P2_YH_REG 0x0B
|
|
#define FT6X36_P2_YL_REG 0x0C
|
|
#define FT6X36_P2_WEIGHT_REG 0x0D
|
|
#define FT6X36_P2_MISC_REG 0x0E
|
|
|
|
/* Threshold for touch detection */
|
|
#define FT6X36_TH_GROUP_REG 0x80
|
|
#define FT6X36_THRESHOLD_MASK 0xFF /* Values FT6X36_TH_GROUP_REG : threshold related */
|
|
#define FT6X36_THRESHOLD_SHIFT 0
|
|
|
|
#define FT6X36_TH_DIFF_REG 0x85 /* Filter function coefficients */
|
|
|
|
#define FT6X36_CTRL_REG 0x86 /* Control register */
|
|
|
|
#define FT6X36_CTRL_KEEP_ACTIVE_MODE 0x00 /* Will keep the Active mode when there is no touching */
|
|
#define FT6X36_CTRL_KEEP_AUTO_SWITCH_MONITOR_MODE 0x01 /* Switching from Active mode to Monitor mode automatically when there is no touching */
|
|
|
|
#define FT6X36_TIME_ENTER_MONITOR_REG 0x87 /* The time period of switching from Active mode to Monitor mode when there is no touching */
|
|
|
|
#define FT6X36_PERIOD_ACTIVE_REG 0x88 /* Report rate in Active mode */
|
|
#define FT6X36_PERIOD_MONITOR_REG 0x89 /* Report rate in Monitor mode */
|
|
|
|
#define FT6X36_RADIAN_VALUE_REG 0x91 /* The value of the minimum allowed angle while Rotating gesture mode */
|
|
|
|
#define FT6X36_OFFSET_LEFT_RIGHT_REG 0x92 /* Maximum offset while Moving Left and Moving Right gesture */
|
|
#define FT6X36_OFFSET_UP_DOWN_REG 0x93 /* Maximum offset while Moving Up and Moving Down gesture */
|
|
|
|
#define FT6X36_DISTANCE_LEFT_RIGHT_REG 0x94 /* Minimum distance while Moving Left and Moving Right gesture */
|
|
#define FT6X36_DISTANCE_UP_DOWN_REG 0x95 /* Minimum distance while Moving Up and Moving Down gesture */
|
|
|
|
#define FT6X36_LIB_VER_H_REG 0xA1 /* High 8-bit of LIB Version info */
|
|
#define FT6X36_LIB_VER_L_REG 0xA2 /* Low 8-bit of LIB Version info */
|
|
|
|
#define FT6X36_CHIPSELECT_REG 0xA3 /* 0x36 for ft6236; 0x06 for ft6206 */
|
|
|
|
#define FT6X36_POWER_MODE_REG 0xA5
|
|
#define FT6X36_FIRMWARE_ID_REG 0xA6
|
|
#define FT6X36_RELEASECODE_REG 0xAF
|
|
#define FT6X36_PANEL_ID_REG 0xA8
|
|
#define FT6X36_OPMODE_REG 0xBC
|
|
|
|
|
|
typedef struct {
|
|
bool inited;
|
|
} ft6x36_status_t;
|
|
|
|
typedef struct
|
|
{
|
|
int16_t last_x;
|
|
int16_t last_y;
|
|
lv_indev_state_t current_state;
|
|
} ft6x36_touch_t;
|
|
|
|
#if CONFIG_LV_FT6X36_COORDINATES_QUEUE
|
|
extern QueueHandle_t ft6x36_touch_queue_handle;
|
|
#endif
|
|
/**
|
|
* @brief Initialize for FT6x36 communication via I2C
|
|
* @param dev_addr: Device address on communication Bus (I2C slave address of FT6X36).
|
|
* @retval None
|
|
*/
|
|
void ft6x06_init(uint16_t dev_addr);
|
|
|
|
uint8_t ft6x36_get_gesture_id();
|
|
|
|
/**
|
|
* @brief Get the touch screen X and Y positions values. Ignores multi touch
|
|
* @param drv:
|
|
* @param data: Store data here
|
|
* @retval Always false
|
|
*/
|
|
bool ft6x36_read(lv_indev_drv_t *drv, lv_indev_data_t *data);
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
#endif /* __FT6X06_H */
|