ibus.h

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#ifndef __IBUS_H__
#define __IBUS_H__
 
/* Defines */
#define IBUS_FRAME_SIZE_MAX         32
#define PAYLOAD_SIZE                (IBUS_FRAME_SIZE_MAX - 4U)
#define CRC_SIZE                    2
#define RC_CHANNELS                 (PAYLOAD_SIZE / 2U)
#define ARRAY_LEN(x)                (sizeof(x) / sizeof((x)[0]))
 
/* Prototypes */
bool ibusInit(void);
void ibusProcess(void);
 
/* Global Variables */
extern uint8_t ibusPayload[PAYLOAD_SIZE];
extern uint8_t ibusCRC[CRC_SIZE];
extern uint16_t ibusChannels[RC_CHANNELS];
 
extern bool rcActive;
 
/* Global Enums */
enum {
    IBUS_STATE_LENGTH,
    IBUS_STATE_TYPE,
    IBUS_STATE_PAYLOAD,
    IBUS_STATE_CRC
};
 
typedef enum{
    IBUS_READY,
    IBUS_BUSY,
    IBUS_ERROR
}ibusStatus_e;
 
#endif /* __IBUS_H__ */