95 lines
3.2 KiB
C
95 lines
3.2 KiB
C
#ifndef __GT911_H
|
|
/*
|
|
* Copyright © 2021 Sturnus Inc.
|
|
|
|
* 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 __GT911_H
|
|
|
|
#include <stdint.h>
|
|
#include <stdbool.h>
|
|
#ifdef LV_LVGL_H_INCLUDE_SIMPLE
|
|
#include "lvgl.h"
|
|
#else
|
|
#include "lvgl/lvgl.h"
|
|
#endif
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
#define GT911_I2C_SLAVE_ADDR 0x5D
|
|
|
|
#define GT911_PRODUCT_ID_LEN 4
|
|
|
|
/* Register Map of GT911 */
|
|
#define GT911_PRODUCT_ID1 0x8140
|
|
#define GT911_PRODUCT_ID2 0x8141
|
|
#define GT911_PRODUCT_ID3 0x8142
|
|
#define GT911_PRODUCT_ID4 0x8143
|
|
#define GT911_FIRMWARE_VER_L 0x8144
|
|
#define GT911_FIRMWARE_VER_H 0x8145
|
|
#define GT911_X_COORD_RES_L 0x8146
|
|
#define GT911_X_COORD_RES_H 0x8147
|
|
#define GT911_Y_COORD_RES_L 0x8148
|
|
#define GT911_Y_COORD_RES_H 0x8149
|
|
#define GT911_VENDOR_ID 0x814A
|
|
|
|
#define GT911_STATUS_REG 0x814E
|
|
#define GT911_STATUS_REG_BUF 0x80
|
|
#define GT911_STATUS_REG_LARGE 0x40
|
|
#define GT911_STATUS_REG_PROX_VALID 0x20
|
|
#define GT911_STATUS_REG_HAVEKEY 0x10
|
|
#define GT911_STATUS_REG_PT_MASK 0x0F
|
|
|
|
#define GT911_TRACK_ID1 0x814F
|
|
#define GT911_PT1_X_COORD_L 0x8150
|
|
#define GT911_PT1_X_COORD_H 0x8151
|
|
#define GT911_PT1_Y_COORD_L 0x8152
|
|
#define GT911_PT1_Y_COORD_H 0x8153
|
|
#define GT911_PT1_X_SIZE_L 0x8154
|
|
#define GT911_PT1_X_SIZE_H 0x8155
|
|
|
|
typedef struct {
|
|
bool inited;
|
|
char product_id[GT911_PRODUCT_ID_LEN];
|
|
uint16_t max_x_coord;
|
|
uint16_t max_y_coord;
|
|
uint8_t i2c_dev_addr;
|
|
} gt911_status_t;
|
|
|
|
/**
|
|
* @brief Initialize for GT911 communication via I2C
|
|
* @param dev_addr: Device address on communication Bus (I2C slave address of GT911).
|
|
* @retval None
|
|
*/
|
|
void gt911_init(uint8_t dev_addr);
|
|
|
|
/**
|
|
* @brief Get the touch screen X and Y positions values. Ignores multi touch
|
|
* @param drv:
|
|
* @param data: Store data here
|
|
* @retval Always false
|
|
*/
|
|
bool gt911_read(lv_indev_drv_t *drv, lv_indev_data_t *data);
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
#endif /* __GT911_H */
|