blob: cd53140cdbc5e726154952d9855c1a4aec265821 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
|
#ifndef _SIMPLE_PACKET_H_
#define _SIMPLE_PACKET_H_
//include our various libraries.
#include <util/crc16.h>
#include <stdint.h>
#include "HardwareSerial.h"
#define START_BYTE 0xD5
#define MAX_PACKET_LENGTH 32
typedef void (*txFuncPtr)(uint8_t);
// packet states
typedef enum {
PS_START = 0,
PS_LEN,
PS_PAYLOAD,
PS_CRC,
PS_LAST
}
PacketState;
// various error codes
typedef enum {
RC_GENERIC_ERROR = 0,
RC_OK = 1,
RC_BUFFER_OVERFLOW = 2,
RC_CRC_MISMATCH = 3,
RC_PACKET_TOO_BIG = 4,
RC_CMD_UNSUPPORTED = 5
}
ResponseCode;
class SimplePacket {
private:
//variables for our incoming packet.
PacketState state;
uint8_t target_length;
uint8_t rx_length;
uint8_t rx_data[MAX_PACKET_LENGTH];
uint8_t rx_crc;
uint8_t tx_length;
uint8_t tx_data[MAX_PACKET_LENGTH];
uint8_t tx_crc;
ResponseCode response_code;
txFuncPtr txFunc;
public:
SimplePacket(txFuncPtr myPtr);
void init();
//process a byte from our packet
void process_byte(uint8_t b);
bool isFinished();
uint8_t getLength();
PacketState getState();
ResponseCode getResponseCode();
void unsupported();
void overflow();
void sendReply();
void sendPacket();
void transmit(uint8_t d);
void add_32(uint32_t d);
void add_16(uint16_t d);
void add_8(uint8_t d);
uint8_t get_8(uint8_t idx);
uint16_t get_16(uint8_t idx);
uint32_t get_32(uint8_t idx);
};
#endif // _SIMPLE_PACKET_H_
|
