CommunicationProtocol.m
12.6 KB
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
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
//
// CommunicationProtocol.m
// DUREX Vendor Control
//
// Created by Imanol Barba on 5/23/14.
// Copyright (c) 2014 Emmoco. All rights reserved.
//
#import "CommunicationProtocol.h"
@interface CommunicationProtocol ()
@end
@implementation CommunicationProtocol
+ (id)sharedProtocol
{
static CommunicationProtocol *shared = nil;
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
shared = [[self alloc] init];
});
return shared;
}
-(void) readMessageAvailableMobile
{
[[EMConnectionManager sharedManager] readResource:@"messageAvailableMobile" onSuccess:^(id readValue)
{
[self setMessageAvailableMobile:[readValue intValue]];
if([self messageAvailableMobile])
{
NSLog(@"[CommunicationProtocol.m]: messageAvailableMobile read: TRUE");
}
else
{
NSLog(@"[CommunicationProtocol.m]: messageAvailableMobile read: FALSE");
}
}
onFail:^(NSError *error)
{
NSLog(@"[CommunicationProtocol.m]: %@",error);
}];
}
-(void) readMessageAvailableDevice
{
[[EMConnectionManager sharedManager] readResource:@"messageAvailableDevice" onSuccess:^(id readValue)
{
[self setMessageAvailableDevice:[readValue intValue]];
if([self messageAvailableDevice])
{
NSLog(@"[CommunicationProtocol.m]: messageAvailableDevice read: TRUE");
}
else
{
NSLog(@"[CommunicationProtocol.m]: messageAvailableDevice read: FALSE");
}
}
onFail:^(NSError *error)
{
NSLog(@"[CommunicationProtocol.m]: %@",error);
}];
}
-(Boolean) waitForMessageAvailableMobile: (Boolean) status
{
uint8_t retries = 0;
[self readMessageAvailableMobile];
while([self messageAvailableMobile] != status)
{
[NSThread sleepForTimeInterval:5];
[self readMessageAvailableMobile];
if([self messageAvailableMobile] != status)
{
if(retries++ == MAX_RETRIES)
{
NSLog(@"[CommunicationProtocol.m]: Timeout while waiting for answer");
return FALSE;
}
}
}
return TRUE;
}
-(Boolean) waitForMessageAvailableDevice: (Boolean) status
{
uint8_t retries = 0;
[self readMessageAvailableDevice];
while([self messageAvailableDevice] != status)
{
[NSThread sleepForTimeInterval:5];
[self readMessageAvailableDevice];
if([self messageAvailableDevice] != status)
{
if(retries++ == MAX_RETRIES)
{
NSLog(@"[CommunicationProtocol.m]: Timeout while waiting for answer");
return FALSE;
}
}
}
return TRUE;
}
-(NSString*) readMessage
{
__block uint8_t numPackets = 1, numBytes; //HACK!
__block NSMutableString *message = [[NSMutableString alloc] init];
[message setString:@""];
//if([self waitForMessageAvailableDevice:TRUE])
if(1) //HACK!
{
[[EMConnectionManager sharedManager] readResource:@"numPackets" onSuccess:^(id readValue)
{
numPackets = (uint8_t) [readValue unsignedCharValue];
NSLog(@"[CommunicationProtocol.m]: numPackets read: %d",numPackets);
}
onFail:^(NSError *error)
{
NSLog(@"[CommunicationProtocol.m]: %@",error);
numPackets = 0;
}];
if(numPackets)
{
for(int i = 0; i < numPackets; i++)
{
//if([self waitForMessageAvailableDevice:TRUE])
if(1)//HACK!
{
[[EMConnectionManager sharedManager] readResource:@"numBytes" onSuccess:^(id readValue)
{
numBytes = (uint8_t) [readValue unsignedCharValue];
NSLog(@"[CommunicationProtocol.m]: numBytes read: %d",numBytes);
}
onFail:^(NSError *error)
{
NSLog(@"[CommunicationProtocol.m]: %@",error);
numBytes = 0;
}];
if(numBytes)
{
[[EMConnectionManager sharedManager] readResource:@"data" onSuccess:^(id readValue)
{
[message appendString: readValue];
[message setString: [message substringToIndex:numBytes]];
NSLog(@"[CommunicationProtocol.m]: data read: %@",message);
}
onFail:^(NSError *error)
{
NSLog(@"[CommunicationProtocol.m]: %@",error);
}];
}
[[EMConnectionManager sharedManager] writeValue:@"0" toResource:@"messageAvailableDevice" onSuccess:^
{
NSLog(@"[CommunicationProtocol.m]: messageAvailableDevice set to FALSE");
NSLog(@"[CommunicationProtocol.m]: packet read");
}
onFail:^(NSError *error)
{
NSLog(@"[CommunicationProtocol.m]: %@",error);
}
];
}
else
{
NSLog(@"[CommunicationProtocol.m]: Error, resetting message");
[message setString:@""];
}
}
}
}
NSLog(@"[CommunicationProtocol.m]: Message received: %@",message);
return message;
}
-(Boolean) writeMessage: (NSString*) message
{
unsigned long remainingBytes = [message length];
uint8_t numBytes, current_index = 0;
__block Boolean status = TRUE; //HACK
__block Boolean blockCompleted = TRUE; //HACK!
[[EMConnectionManager sharedManager] writeValue:@"0" toResource:@"messageAvailableMobile" onSuccess:^
{
status = TRUE;
NSLog(@"[CommunicationProtocol.m]: messageAvailableMobile set to FALSE");
blockCompleted = TRUE;
}
onFail:^(NSError *error)
{
NSLog(@"[CommunicationProtocol.m]: %@",error);
status = FALSE;
blockCompleted = TRUE;
}];
while(blockCompleted != TRUE)
{
[NSThread sleepForTimeInterval:1];
}
NSLog(@"[CommunicationProtocol.m]: messageAvailableMobile write block completed");
blockCompleted = FALSE;
[[EMConnectionManager sharedManager] writeValue:[NSNumber numberWithUnsignedChar:(unsigned char)([message length]/MAX_STRING_LENGTH)+1] toResource:@"numPackets" onSuccess:^
{
status = TRUE;
NSLog(@"[CommunicationProtocol.m]: numPackets set to %d",([message length]/MAX_STRING_LENGTH) + 1);
}
onFail:^(NSError *error)
{
NSLog(@"[CommunicationProtocol.m]: %@",error);
status = FALSE;
}
];
NSLog(@"[CommunicationProtocol.m]: status is: %d",status);
if(status != FALSE)
{
NSLog(@"[CommunicationProtocol.m]: Carrying on after numPackets...");
while(remainingBytes)
{
if(![self waitForMessageAvailableMobile:FALSE])
{
status = FALSE;
break;
}
NSLog(@"[CommunicationProtocol.m]: Device is ready for next packet");
if(remainingBytes > MAX_STRING_LENGTH)
{
numBytes = MAX_STRING_LENGTH;
remainingBytes -= MAX_STRING_LENGTH;
}
else
{
numBytes = remainingBytes;
remainingBytes = 0;
}
[[EMConnectionManager sharedManager] writeValue:[NSNumber numberWithUnsignedChar:(unsigned char)numBytes] toResource:@"numBytes" onSuccess:^
{
NSLog(@"[CommunicationProtocol.m]: numBytes set to %d", numBytes);
status = TRUE;
}
onFail:^(NSError *error)
{
NSLog(@"[CommunicationProtocol.m]: %@",error);
status = FALSE;
}
];
if(status != FALSE)
{
NSLog(@"[CommunicationProtocol.m]: Carrying on after numBytes...");
NSString *data = [message substringWithRange:NSMakeRange(current_index, numBytes)];
current_index += numBytes;
[[EMConnectionManager sharedManager] writeValue:data toResource:@"data" onSuccess:^
{
NSLog(@"[CommunicationProtocol.m]: data set to: %@",data);
status = TRUE;
}
onFail:^(NSError *error)
{
NSLog(@"[CommunicationProtocol.m]: %@",error);
status = FALSE;
}
];
if(status != FALSE)
{
NSLog(@"[CommunicationProtocol.m]: Carrying on after data...");
[[EMConnectionManager sharedManager] writeValue:@"1" toResource:@"messageAvailableMobile" onSuccess:^
{
status = TRUE;
NSLog(@"[CommunicationProtocol.m]: messageAvailableMobile set to TRUE");
NSLog(@"[CommunicationProtocol.m]: Packet written");
}
onFail:^(NSError *error)
{
NSLog(@"[CommunicationProtocol.m]: %@",error);
status = FALSE;
}
];
NSLog(@"[CommunicationProtocol.m]: Carrying on after messageAvailableMobile...");
}
}
}
}
if(![self waitForMessageAvailableMobile:FALSE])
{
NSLog(@"[CommunicationProtocol.m]: Device has processed the message");
}
return status;
}
-(Boolean) establishConnection
{
NSLog(@"[CommunicationProtocol.m]: Establishing connection...");
if([self writeMessage:@"Hello"])
{
NSLog(@"[CommunicationProtocol.m]: Hello sent");
NSString *answer = [self readMessage];
NSLog(@"[CommunicationProtocol.m]: Answer received");
if([answer isEqualToString:@"Hello"])
{
NSLog(@"[CommunicationProtocol.m]: Connection established");
return TRUE;
}
}
NSLog(@"[CommunicationProtocol.m]: Error while establishing connection");
return TRUE; //HACK!
}
-(Boolean) updateTime: (NSDateComponents*) date
{
if(date == nil)
{
NSCalendar *calendar = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];
NSCalendarUnit units = NSYearCalendarUnit | NSMonthCalendarUnit | NSDayCalendarUnit | NSHourCalendarUnit | NSMinuteCalendarUnit | NSSecondCalendarUnit;
date = [calendar components:units fromDate:[NSDate date]];
}
NSMutableString *command = [NSMutableString stringWithFormat: @"A5"];
NSInteger year = [date year];
year = year - (year/100)*100;
[command appendString:[NSString stringWithFormat:@"%02d",year]];
[command appendString:[NSString stringWithFormat:@"%02d%02d%02d%02d%02d",[date month],[date day],[date hour],[date minute],[date second]]];
[self writeMessage:command];
NSString *answer = [self readMessage];
if([answer isEqualToString:@"P51"])
{
return TRUE;
}
return FALSE;
}
-(Boolean) updatePrice: (uint8_t) channel : (uint8_t) product : (uint8_t) eur : (uint8_t) cents
{
NSMutableString *command = [NSMutableString stringWithFormat: @"A6%01d%01d%02d%02d",channel,product,eur,cents];
[self writeMessage:command];
NSString *answer = [self readMessage];
if([answer isEqualToString:@"P61"])
{
return TRUE;
}
return FALSE;
}
-(Boolean) updateProductName: (uint8_t) channel : (uint8_t) product : (NSString*) name
{
if([name length] > MAX_PRODUCT_NAME_LENGTH)
{
name = [name substringToIndex:MAX_PRODUCT_NAME_LENGTH-1];
}
NSMutableString *command = [NSMutableString stringWithFormat: @"A7%01d%01d%@",channel,product,name];
[self writeMessage:command];
NSString *answer = [self readMessage];
if([answer isEqualToString:@"P71"])
{
return TRUE;
}
return FALSE;
}
@end