/*
 * File      : drv_touch.h
 * This file is part of RT-Thread RTOS
 * COPYRIGHT (C) 2018 RT-Thread Develop Team
 *
 * The license and distribution terms for this file may be
 * found in the file LICENSE in this distribution or at
 * http://www.rt-thread.org/license/LICENSE
 *
 * Change Logs:
 * Date           Author       Notes
 * 2018-10-03     xuzhuoyi     first implementation.
 */

#ifndef __DRV_TOUCH_H__
#define __DRV_TOUCH_H__

#include <stdint.h>

/* Register addresses */
#define STMPE811_CHIP_ID        0x00
#define STMPE811_ID_VER         0x02
#define STMPE811_SYS_CTRL1      0x03
#define STMPE811_SYS_CTRL2      0x04
#define STMPE811_SPI_CFG        0x08
#define STMPE811_INT_CTRL       0x09
#define STMPE811_INT_EN         0x0A
#define STMPE811_INT_STA        0x0B
#define STMPE811_GPIO_EN        0x0C
#define STMPE811_GPIO_INT_STA   0x0D
#define STMPE811_ADC_INT_EN     0x0E
#define STMPE811_ADC_INT_STA    0x0F
#define STMPE811_GPIO_SET_PIN   0x10
#define STMPE811_GPIO_CLR_PIN   0x11
#define STMPE811_GPIO_MP_STA    0x12
#define STMPE811_GPIO_DIR       0x13
#define STMPE811_GPIO_ED        0x14
#define STMPE811_GPIO_RE        0x15
#define STMPE811_GPIO_FE        0x16
#define STMPE811_GPIO_AF        0x17
#define STMPE811_ADC_CTRL1      0x20
#define STMPE811_ADC_CTRL2      0x21
#define STMPE811_ADC_CAPT       0x22
#define STMPE811_ADC_DATA_CH0   0x30
#define STMPE811_ADC_DATA_CH1   0x32
#define STMPE811_ADC_DATA_CH2   0x34
#define STMPE811_ADC_DATA_CH3   0x36
#define STMPE811_ADC_DATA_CH4   0x38
#define STMPE811_ADC_DATA_CH5   0x3A
#define STMPE811_ADC_DATA_CH6   0x3C
#define STMPE811_ADC_DATA_CH7   0x3E
#define STMPE811_TSC_CTRL       0x40
#define STMPE811_TSC_CFG        0x41
#define STMPE811_WDW_TR_X       0x42
#define STMPE811_WDW_TR_Y       0x44
#define STMPE811_WDW_BL_X       0x46
#define STMPE811_WDW_BL_Y       0x48
#define STMPE811_FIFO_TH        0x4A
#define STMPE811_FIFO_STA       0x4B
#define STMPE811_FIFO_SIZE      0x4C
#define STMPE811_TSC_DATA_X     0x4D
#define STMPE811_TSC_DATA_Y     0x4F
#define STMPE811_TSC_DATA_Z     0x51
#define STMPE811_TSC_FRACTION_Z 0x56
#define STMPE811_TSC_DATA_XYZ   0x57
#define STMPE811_TSC_DATA       0xD7
#define STMPE811_TSC_I_DRIVE    0x58
#define STMPE811_TSC_SHIELD     0x59
#define STMPE811_TEMP_CTRL      0x60
#define STMPE811_TEMP_DATA      0x61
#define STMPE811_TEMP_TH        0x62

/* Touch state */
struct touch_state {
  int16_t x;                            ///< Position X
  int16_t y;                            ///< Position Y
  uint8_t pressed;                      ///< Pressed flag
  uint8_t padding;
};

int32_t touch_get_state(struct touch_state *state);

#endif /* __DRV_TOUCH_H__ */