event_bus.h

/*$$$LICENCE_NORDIC_STANDARD<2016>$$$*/

#ifndef __EVENT_BUS_H__
#define __EVENT_BUS_H__

#include <stdint.h>
#include <stdbool.h>
#include "sdk_errors.h"

// Enable anonymous unions.
#if defined(__CC_ARM)
 #pragma push
 #pragma anon_unions
#elif defined(__ICCAR_)
 #pragma language=save
 #pragma language=extended
#elif defined(__GNUC__)
 // Anonymous unions are supported by default.
#endif

#define EVENT_GROUP(_event_type) (event_group_t)((unsigned long)(_event_type) >> 8)

typedef enum
{
 EVT_GROUP_SYSTEM, 
 EVT_GROUP_KEY, 
 EVT_GROUP_REL, 
 EVT_GROUP_HID, 
 EVT_GROUP_IR, 
 EVT_GROUP_BT, 
 EVT_GROUP_ATVV, 
} event_group_t;

typedef enum
{
 /* System Events */
 EVT_SYSTEM_BATTERY_LEVEL = (EVT_GROUP_SYSTEM << 8),
 EVT_SYSTEM_GYRO_STATE,

 /* Keyboard input events */
 EVT_KEY_UP = (EVT_GROUP_KEY << 8),
 EVT_KEY_DOWN,
 EVT_KEY_HELD,

 /* Relative motion events */
 EVT_REL_X = (EVT_GROUP_REL << 8),
 EVT_REL_Y,
 EVT_REL_WHEEL,
 EVT_REL_PAN,

 /* HID report events */
 EVT_HID_REPORT_INPUT = (EVT_GROUP_HID << 8),
 EVT_HID_REPORT_OUTPUT,
 EVT_HID_REPORT_FEATURE,

 /* IR symbol */
 EVT_IR_SYMBOL = (EVT_GROUP_IR << 8),

 /* Bluetooth events */
 EVT_BT_CONN_STATE = (EVT_GROUP_BT << 8),
 EVT_BT_ADV_STATE,
 EVT_BT_ALERT_LEVEL,
 EVT_BT_DFU_STATE,

 /* ATVV events */
 EVT_ATVV_STATE = (EVT_GROUP_ATVV << 8),
} event_type_t;

typedef struct
{
 event_type_t type;

 union {
 // Valid for EVT_GROUP_SYSTEM.
 struct {
 uint8_t data;
 } system;

 // Valid for EVT_GROUP_KEY.
 struct {
 uint16_t id;
 uint32_t down_timestamp;
 } key;

 // Valid for EVT_GROUP_REL.
 struct {
 int16_t shift;
 } rel;

 // Valid for EVT_GROUP_HID,
 struct {
 uint32_t usage;
 int16_t report;
 } hid;

 // Valid for EVT_GROUP_IR,
 struct {
 const sr3_ir_symbol_t *p_symbol;
 } ir;

 // Valid for EVT_GROUP_BT,
 struct {
 uint8_t data;
 uint16_t conn_id;
 uint16_t peer_id;
 } bt;

 // Valid for EVT_GROUP_ATVV
 struct {
 uint8_t type;
 uint8_t rate_khz;
 uint16_t conn_id;
 uint16_t peer_id;
 } atvv;
 };
} event_t;

#if defined(__CC_ARM)
 #pragma pop
#elif defined(__ICCAR_)
 #pragma language=restore
#elif defined(__GNUC__)
 // Anonymous unions are supported by default.
#endif

// EVT_BT_CONN_STATE data
#define BT_CONN_STATE_DISCONNECTED 0
#define BT_CONN_STATE_CONNECTED 1
#define BT_CONN_STATE_SECURED 2

// EVT_BT_ADV_STATE data
#define BT_ADV_STATE_IDLE 0
#define BT_ADV_STATE_ACTIVE 1
#define BT_ADV_STATE_ACTIVE_BONDABLE 2

// EVT_BT_DFU_STATE data
#define BT_DFU_STATE_STARTED 0
#define BT_DFU_STATE_FINISHED 1
#define BT_DFU_STATE_ERROR 2

// EVT_ATVV_STATE type
#define EVT_ATVV_STATE_ENABLED 0 
#define EVT_ATVV_STATE_DISABLED 1 
#define EVT_ATVV_STATE_MIC_OPEN 2 
#define EVT_ATVV_STATE_MIC_CLOSE 3 
#define EVT_ATVV_STATE_SEARCH_TIMEOUT 4 
typedef bool (*event_handler_t)(const event_t *p_event);

ret_code_t event_bus_init(const event_handler_t *event_handlers_table);

ret_code_t event_send(event_type_t event_type, ...);

#endif