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#ifndef PACKET_H
#define PACKET_H
#define MISC_ACK 0x06
/*#define REQUEST_TYPE_VAR 0x4D56 // VM
#define REQUEST_TYPE_PICTURE 0x4350 // PC
#define REQUEST_TYPE_LIST 0x544C // LT
#define REQUEST_TYPE_MATRIX 0x544D // MT
*/
#define PKT_HEADER_MAX_SIZE 50
enum packet_types
{
PKT_END,
PKT_VALUE_HEADER,
PKT_SCREEN_HEADER_BW,
PKT_SCREEN_HEADER_COL,
PKT_BACKUP_HEADER,
PKT_PROGRAM_HEADER,
PKT_FUNCTION_HEADER,
PKT_VAL,
PKT_UNKNOWN
};
unsigned char calculate_checksum(const char *start, const char *stop);
unsigned short calculate_checksum_word(const char *start, const char *stop);
enum packet_types get_packet_type(const unsigned char* data);
#endif
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