File syn_ibus.c

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Zero-Heap IBUS (FlySky) 14-Channel Receiver Decoder Implementation.

• #include "syntropic/proto/syn_ibus.h"
• #include <string.h>

Public Functions

Type	Name
uint16_t	syn_ibus_calc_checksum (const uint8_t buf) Calculate IBUS 16-bit checksum.
SYN_Status	syn_ibus_init (SYN_IBUS_Parser * parser) Initialize IBUS parser.
SYN_Status	syn_ibus_parse_byte (SYN_IBUS_Parser * parser, uint8_t byte, SYN_IBUS_Frame * frame) Process single byte from serial RX stream.

Public Functions Documentation

function syn_ibus_calc_checksum

Calculate IBUS 16-bit checksum.

uint16_t syn_ibus_calc_checksum (
    const uint8_t buf
) 

Parameters:

• buf Pointer to 30 data bytes.

Returns:

16-bit expected checksum (0xFFFF - sum(bytes)).

---

function syn_ibus_init

Initialize IBUS parser.

SYN_Status syn_ibus_init (
    SYN_IBUS_Parser * parser
) 

Parameters:

• parser Pointer to parser struct.

Returns:

SYN_OK on success.

---

function syn_ibus_parse_byte

Process single byte from serial RX stream.

SYN_Status syn_ibus_parse_byte (
    SYN_IBUS_Parser * parser,
    uint8_t byte,
    SYN_IBUS_Frame * frame
) 

Parameters:

• parser Pointer to parser struct.
• byte Incoming byte.
• frame Pointer to output frame struct (populated when a valid 32-byte frame is decoded).

Returns:

SYN_OK on complete frame, SYN_BUSY if byte accepted but incomplete, SYN_ERROR on bad header/checksum.

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The documentation for this class was generated from the following file src/syntropic/proto/syn_ibus.c