stmpe811.h

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/*
 * Copyright (C) 2019 Inria
 *
 * This file is subject to the terms and conditions of the GNU Lesser
 * General Public License v2.1. See the file LICENSE in the top level
 * directory for more details.
 */
 
#ifndef STMPE811_H
#define STMPE811_H
 
#include "saul.h"
#include "periph/gpio.h"
#include "periph/i2c.h"
 
#ifdef MODULE_TOUCH_DEV
#include "touch_dev.h"
#endif
 
#ifdef __cplusplus
extern "C" {
#endif
 
enum {
    STMPE811_OK = 0,                    
    STMPE811_ERR_I2C,                   
    STMPE811_ERR_NODEV,                 
    STMPE811_ERR_RESET,                 
};
 
typedef enum {
    STMPE811_TOUCH_STATE_PRESSED,       
    STMPE811_TOUCH_STATE_RELEASED,      
} stmpe811_touch_state_t;
 
typedef struct {
    uint16_t x;                         
    uint16_t y;                         
} stmpe811_touch_position_t;
 
typedef void (*touch_event_cb_t)(void *arg);
 
typedef struct {
    i2c_t i2c;                         
    uint8_t addr;                      
    gpio_t int_pin;                    
    uint16_t xmax;                     
    uint16_t ymax;                     
} stmpe811_params_t;
 
typedef struct {
#ifdef MODULE_TOUCH_DEV
    touch_dev_t *dev;                   
#endif
    stmpe811_params_t params;           
    uint16_t prev_x;                    
    uint16_t prev_y;                    
} stmpe811_t;
 
int stmpe811_init(stmpe811_t *dev, const stmpe811_params_t * params,
                  touch_event_cb_t cb, void *arg);
 
int stmpe811_read_touch_position(stmpe811_t *dev, stmpe811_touch_position_t *position);
 
int stmpe811_read_touch_state(const stmpe811_t *dev, stmpe811_touch_state_t *state);
 
#ifdef __cplusplus
}
#endif
 
#endif /* STMPE811_H */