149 lines
4.2 KiB
C
149 lines
4.2 KiB
C
#ifndef SET_PROTOCOL_H
|
|
#define SET_PROTOCOL_H
|
|
|
|
#include <stdbool.h>
|
|
#include <stddef.h>
|
|
#include <stdint.h>
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
#define SETP_VERSION 0x02U
|
|
#define SETP_SOF0 0xA5U
|
|
#define SETP_SOF1 0x5AU
|
|
#define SETP_HEADER_SIZE 14U
|
|
#define SETP_CRC_SIZE 4U
|
|
|
|
#ifndef SETP_MAX_PAYLOAD
|
|
#define SETP_MAX_PAYLOAD 512U
|
|
#endif
|
|
|
|
#define SETP_FRAME_MAX (SETP_HEADER_SIZE + SETP_MAX_PAYLOAD + SETP_CRC_SIZE)
|
|
#define SETP_NODE_LOCAL 0x0000U
|
|
#define SETP_NODE_BROADCAST 0xFFFFU
|
|
|
|
/* Frame flags. Reserved bits must be transmitted as zero. */
|
|
#define SETP_FLAG_RESPONSE 0x01U
|
|
#define SETP_FLAG_EVENT 0x02U
|
|
#define SETP_FLAG_ERROR 0x04U
|
|
#define SETP_FLAG_ACK_REQUIRED 0x08U
|
|
#define SETP_FLAG_MORE 0x10U
|
|
#define SETP_FLAG_PRIORITY 0x20U
|
|
#define SETP_FLAG_KNOWN_MASK 0x3FU
|
|
#define SETP_FLAG_RESERVED_MASK 0xC0U
|
|
|
|
typedef enum {
|
|
SETP_IFACE_NONE = 0,
|
|
SETP_IFACE_RS232 = 1,
|
|
SETP_IFACE_RS485 = 2,
|
|
SETP_IFACE_CAN = 3,
|
|
SETP_IFACE_USB_CDC = 4,
|
|
SETP_IFACE_ETHERNET_TCP = 5,
|
|
SETP_IFACE_ETHERNET_UDP = 6
|
|
} setp_iface_t;
|
|
|
|
typedef enum {
|
|
SETP_MSG_PING = 0x0001,
|
|
SETP_MSG_DEVICE_INFO = 0x0002,
|
|
SETP_MSG_CAPABILITIES = 0x0003,
|
|
SETP_MSG_DIAGNOSTICS = 0x0008,
|
|
SETP_MSG_READ = 0x0009,
|
|
SETP_MSG_WRITE = 0x000A,
|
|
SETP_MSG_LOG_READ = 0x0010,
|
|
SETP_MSG_CATALOG = 0x0011,
|
|
SETP_MSG_SUBSCRIBE = 0x0012,
|
|
SETP_MSG_PUBLISH = 0x0013,
|
|
SETP_MSG_UNSUBSCRIBE = 0x0014,
|
|
|
|
SETP_MSG_FW_BEGIN = 0x0100,
|
|
SETP_MSG_FW_DATA = 0x0101,
|
|
SETP_MSG_FW_END = 0x0102,
|
|
SETP_MSG_FW_ABORT = 0x0103,
|
|
SETP_MSG_FW_STATUS = 0x0104,
|
|
SETP_MSG_FW_ACTIVATE = 0x0105,
|
|
|
|
SETP_MSG_DEVICE_BASE = 0x1000,
|
|
SETP_MSG_DEVICE_LAST = 0x7FFF
|
|
} setp_message_type_t;
|
|
|
|
typedef enum {
|
|
SETP_STATUS_OK = 0,
|
|
SETP_STATUS_INVALID_ARGUMENT = 1,
|
|
SETP_STATUS_INVALID_LENGTH = 2,
|
|
SETP_STATUS_NOT_FOUND = 3,
|
|
SETP_STATUS_ACCESS_DENIED = 4,
|
|
SETP_STATUS_BUSY = 5,
|
|
SETP_STATUS_NO_PROVIDER = 6,
|
|
SETP_STATUS_INTERNAL = 7,
|
|
SETP_STATUS_CRC = 8,
|
|
SETP_STATUS_SEQUENCE = 9,
|
|
SETP_STATUS_NO_SPACE = 10,
|
|
SETP_STATUS_UNSUPPORTED = 11,
|
|
SETP_STATUS_VERIFY_FAILED = 12,
|
|
SETP_STATUS_AUTH_FAILED = 13,
|
|
SETP_STATUS_TIMEOUT = 14,
|
|
SETP_STATUS_WRONG_STATE = 15
|
|
} setp_status_t;
|
|
|
|
typedef struct {
|
|
uint8_t flags;
|
|
uint16_t message_type;
|
|
uint16_t source;
|
|
uint16_t destination;
|
|
uint16_t sequence;
|
|
uint16_t payload_length;
|
|
const uint8_t *payload;
|
|
} setp_frame_t;
|
|
|
|
typedef struct {
|
|
uint32_t frames;
|
|
uint32_t crc_errors;
|
|
uint32_t version_errors;
|
|
uint32_t length_errors;
|
|
uint32_t flag_errors;
|
|
uint32_t stray_bytes;
|
|
uint32_t overflows;
|
|
} setp_parser_stats_t;
|
|
|
|
typedef struct {
|
|
uint8_t buffer[SETP_FRAME_MAX];
|
|
uint16_t length;
|
|
setp_parser_stats_t stats;
|
|
} setp_parser_t;
|
|
|
|
typedef void (*setp_frame_fn)(const setp_frame_t *frame, void *user);
|
|
|
|
uint16_t setp_get_u16(const uint8_t *data);
|
|
uint32_t setp_get_u32(const uint8_t *data);
|
|
void setp_put_u16(uint8_t *data, uint16_t value);
|
|
void setp_put_u32(uint8_t *data, uint32_t value);
|
|
|
|
uint32_t setp_crc32(const uint8_t *data, size_t length);
|
|
|
|
/** Encode one complete stream/UDP frame. Returns zero on invalid arguments. */
|
|
size_t setp_frame_encode(const setp_frame_t *frame, uint8_t *out, size_t capacity);
|
|
|
|
/** Decode exactly one complete UDP/datagram frame; trailing bytes are rejected. */
|
|
bool setp_frame_decode_datagram(const uint8_t *data, size_t length, setp_frame_t *out);
|
|
|
|
void setp_parser_init(setp_parser_t *parser);
|
|
void setp_parser_reset(setp_parser_t *parser);
|
|
|
|
/** Feed an arbitrary stream chunk. Returns the number of delivered frames. */
|
|
size_t setp_parser_feed(setp_parser_t *parser, const uint8_t *data, size_t length,
|
|
setp_frame_fn callback, void *user);
|
|
|
|
/** Encode the common two-byte status prefix used by every response. */
|
|
size_t setp_status_encode(uint16_t status, uint8_t *out, size_t capacity);
|
|
|
|
/** Split a response payload into status and optional response body. */
|
|
bool setp_status_decode(const setp_frame_t *frame, uint16_t *status,
|
|
const uint8_t **body, uint16_t *body_length);
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* SET_PROTOCOL_H */
|