-
Notifications
You must be signed in to change notification settings - Fork 4
/
Venerate.cpp
203 lines (181 loc) · 5.2 KB
/
Venerate.cpp
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
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
// Venerate: A library for communicating to the ET312 box via serial
//
// tip is rx (yellow), ring is tx (green), body in gnd
// you must use a ttl to rs232 converter and hardware serial
//
// This arduino code is based off the et312-perl code but with the
// addition of some new methods that were not known before (figured out
// by trial-and-error watching all the available memory locations)
//
// June 2015
#if defined(ARDUINO) && ARDUINO >= 100
#include "Arduino.h"
#elif defined(SPARK)
#include "application.h"
#endif
#include "Venerate.h"
#if defined(ARDUINO) && ARDUINO >= 100
#include "EEPROM.h" // store the last mod byte in case we lose power
#endif
Venerate::Venerate(byte boxid)
{
_debug = 0;
_state = 0;
_boxid = boxid;
}
void Venerate::begin(Stream &serial)
{
_serial = &serial;
_serial->setTimeout(5UL);
}
void Venerate::setdebug(Stream &debugserial, byte debug) {
_debug = debug;
_debugserial = &debugserial;
}
void Venerate::setmod(byte mod) {
_mod = mod;
}
boolean Venerate::isconnected(void) {
return (_state == 1);
}
// Send a series of bytes to the box and return the result, based
// on the code from et312-perl
int Venerate::cp(byte msg[], byte n, byte reply[]) {
byte sum = 0;
for (byte i = 0; i < n; i++) {
byte c = msg[i];
sum += c; // overflow expected and ok
c ^= _mod;
if (_debug>1) {
Serial.print(c, HEX);
Serial.print(" ");
}
_serial->write((byte)c);
}
if (n > 1) {
if (_debug>1) _debugserial->print((byte)(sum ^ _mod), HEX);
_serial->write((byte)sum ^ _mod);
}
if (_debug>1) _debugserial->println(" tx");
_serial->flush();
// In perl we wait for 10+10*1 milliseconds 20ms only!
#if defined (SPARK)
byte bread = _serial->readBytes((char *)reply, maxrxbytes);
#else
byte bread = _serial->readBytes(reply, maxrxbytes);
#endif
if (bread <1) {
if (_debug) _debugserial->println("no rx");
_state = 0;
} else if (_debug>1) {
for (int i = 0; i < bread; i++) {
_debugserial->print(reply[i], HEX);
_debugserial->print(" ");
}
_debugserial->println(" rx");
}
return bread;
}
// Return the byte at the memory address or -1 if error
int Venerate::getbyte(int n) {
byte reply[maxrxbytes];
byte msg[3];
msg[0] = 0x3c;
msg[1] = (byte)(n >> 8);
msg[2] = (byte)(n & 255);
int count = Venerate::cp(msg, 3, reply);
if (count < 3) return -1; // got to be 3 chars
if (reply[0] != 0x22) return -1; // first is 0x22
byte sum = reply[0] + reply[1]; // with valid checksum, allow overflow
if (sum != reply[2]) return -1;
return reply[1];
}
// Send a byte to a memory address, false if error
boolean Venerate::setbyte(int n, int b) {
byte reply[maxrxbytes];
byte msg[4];
msg[0] = 0x4d;
msg[1] = (byte)(n >> 8);
msg[2] = (byte)(n & 255);
msg[3] = (byte)(b);
int count = Venerate::cp(msg, 4, reply);
if (count < 1) return false; // got to be 1 chars
if (reply[0] != 0x06) return false; // success is a 6
return true;
}
// hello, hello, good to be back
boolean Venerate::hello()
{
bool trymod = true;
if (_state != 0) {
if (_debug) _debugserial->println("State !0");
return Venerate::isconnected();
}
byte rx[maxrxbytes];
if (_debug) _debugserial->println("tx hello");
int s = 0;
for (int i = 0; i < 10; i++) {
byte send[] = {0x00};
_mod = 0;
int chars = Venerate::cp(send, 1, rx);
if (chars > 0 && rx[0] == 0x07) {
s++;
if (s > 3) break;
} else {
s = 0;
}
}
if (s > 3) {
if (_debug) _debugserial->println("rx hello");
byte send[] = {0x2f, 0x00};
_mod = 0;
int chars = Venerate::cp(send, 2, rx);
int sum = rx[0] + rx[1];
if (sum > 256) sum -= 256;
if (chars < 3 || rx[0] != 0x21 || sum != rx[2]) {
if (_debug) _debugserial->println("no sync");
} else {
_mod = rx[1] ^ 0x55;
if (_debug) {
_debugserial->print(_mod, HEX);
_debugserial->println("=mod");
}
EEPROM.write(_boxid, _mod);
trymod = false;
}
}
if (trymod) {
_mod = EEPROM.read(_boxid);
if (_debug) {
_debugserial->print(_mod, HEX);
_debugserial->println(" mod try");
}
int s = 0;
for (int i = 0; i < 10; i++) {
byte send[] = {0x00};
int chars = Venerate::cp(send, 1 , rx);
if (chars > 0 && rx[0] == 0x07) {
s++;
if (s > 3) break;
} else {
s = 0;
}
}
if (s < 1) {
if (_debug) _debugserial->println("fail");
return Venerate::isconnected();
}
}
// just a test memory get
int y = Venerate::getbyte(ETMEM_knoba);
if (y < 0) {
if (_debug) _debugserial->println("fail");
} else {
if (_debug) {
_debugserial->print(y, HEX);
_debugserial->println("=knoba");
}
_state = 1;
}
return Venerate::isconnected();
}