plotly interface based on ardunio sample code
Library for plotting a simple x/y scatter chart on the plot.ly website.
See plotly_HelloWorld for sample usage.
plotly.cpp@3:967be3d46701, 2014-07-11 (annotated)
- Committer:
- AndyA
- Date:
- Fri Jul 11 08:08:06 2014 +0000
- Revision:
- 3:967be3d46701
- Parent:
- 2:d53d74ed68ac
- Child:
- 4:33006c37c633
- Child:
- 6:e57d6e9313f4
Update to match current API documentation
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
AndyA | 0:96532c59670f | 1 | #include "plotly.h" |
AndyA | 0:96532c59670f | 2 | #include "mbed.h" |
AndyA | 0:96532c59670f | 3 | |
AndyA | 3:967be3d46701 | 4 | #define plotlyURL "plot.ly" |
AndyA | 0:96532c59670f | 5 | #define dataURL "arduino.plot.ly" |
AndyA | 0:96532c59670f | 6 | |
AndyA | 0:96532c59670f | 7 | plotly::plotly(char *username, char *api_key, char* stream_tokens[], char *filename, int nTraces) |
AndyA | 0:96532c59670f | 8 | { |
AndyA | 0:96532c59670f | 9 | log_level = 0; // 0 = Debugging, 1 = Informational, 2 = Status, 3 = Errors, 4 = Quiet (// Serial Off) |
AndyA | 0:96532c59670f | 10 | dry_run = false; |
AndyA | 0:96532c59670f | 11 | username_ = username; |
AndyA | 0:96532c59670f | 12 | api_key_ = api_key; |
AndyA | 0:96532c59670f | 13 | stream_tokens_ = stream_tokens; |
AndyA | 0:96532c59670f | 14 | filename_ = filename; |
AndyA | 0:96532c59670f | 15 | nTraces_ = nTraces; |
AndyA | 0:96532c59670f | 16 | maxpoints = 30; |
AndyA | 0:96532c59670f | 17 | fibonacci_ = 1; |
AndyA | 0:96532c59670f | 18 | world_readable = true; |
AndyA | 0:96532c59670f | 19 | convertTimestamp = true; |
AndyA | 0:96532c59670f | 20 | timezone = "America/Montreal"; |
AndyA | 0:96532c59670f | 21 | fileopt = "overwrite"; |
AndyA | 1:d532e96fca12 | 22 | |
AndyA | 2:d53d74ed68ac | 23 | socket = NULL; |
AndyA | 1:d532e96fca12 | 24 | initalised = false; |
AndyA | 0:96532c59670f | 25 | } |
AndyA | 0:96532c59670f | 26 | |
AndyA | 0:96532c59670f | 27 | |
AndyA | 1:d532e96fca12 | 28 | plotly::~plotly() |
AndyA | 1:d532e96fca12 | 29 | { |
AndyA | 1:d532e96fca12 | 30 | closeStream(); |
AndyA | 1:d532e96fca12 | 31 | } |
AndyA | 0:96532c59670f | 32 | |
AndyA | 0:96532c59670f | 33 | bool plotly::init() |
AndyA | 0:96532c59670f | 34 | { |
AndyA | 0:96532c59670f | 35 | |
AndyA | 0:96532c59670f | 36 | // |
AndyA | 0:96532c59670f | 37 | // Validate a stream with a REST post to plotly |
AndyA | 0:96532c59670f | 38 | // |
AndyA | 0:96532c59670f | 39 | if(dry_run && log_level < 3) { |
AndyA | 0:96532c59670f | 40 | fprintf(stderr,"... This is a dry run, we are not connecting to plotly's servers...\n"); |
AndyA | 0:96532c59670f | 41 | } else if(log_level < 3) { |
AndyA | 0:96532c59670f | 42 | fprintf(stderr,"... Attempting to connect to plotly's REST servers\n"); |
AndyA | 0:96532c59670f | 43 | } |
AndyA | 0:96532c59670f | 44 | |
AndyA | 2:d53d74ed68ac | 45 | // socket.set_blocking(false); |
AndyA | 1:d532e96fca12 | 46 | |
AndyA | 2:d53d74ed68ac | 47 | if (!dry_run) { |
AndyA | 2:d53d74ed68ac | 48 | socket = new TCPSocketConnection(); |
AndyA | 2:d53d74ed68ac | 49 | while (socket->connect(plotlyURL, 80) < 0) { |
AndyA | 0:96532c59670f | 50 | fprintf(stderr,"... Couldn\'t connect to plotly's REST servers... trying again!\n"); |
AndyA | 2:d53d74ed68ac | 51 | wait(1); |
AndyA | 0:96532c59670f | 52 | } |
AndyA | 2:d53d74ed68ac | 53 | } |
AndyA | 1:d532e96fca12 | 54 | |
AndyA | 1:d532e96fca12 | 55 | if(log_level < 3) fprintf(stderr,"... Connected to plotly's REST servers\n"); |
AndyA | 2:d53d74ed68ac | 56 | |
AndyA | 1:d532e96fca12 | 57 | if(log_level < 3) fprintf(stderr,"... Sending HTTP Post to plotly\n"); |
AndyA | 2:d53d74ed68ac | 58 | |
AndyA | 0:96532c59670f | 59 | print_("POST /clientresp HTTP/1.1\r\n"); |
AndyA | 0:96532c59670f | 60 | print_("Host: 107.21.214.199\r\n"); |
AndyA | 3:967be3d46701 | 61 | print_("User-Agent: Arduino/0.5.1\r\n"); |
AndyA | 2:d53d74ed68ac | 62 | print_("plotly-streamtoken: "); |
AndyA | 2:d53d74ed68ac | 63 | print_(stream_tokens_[0]); |
AndyA | 2:d53d74ed68ac | 64 | print_("\r\n"); |
AndyA | 0:96532c59670f | 65 | |
AndyA | 0:96532c59670f | 66 | print_("Content-Length: "); |
AndyA | 0:96532c59670f | 67 | int contentLength = 126 + len_(username_) + len_(fileopt) + nTraces_*(87+len_(maxpoints)) + (nTraces_-1)*2 + len_(filename_); |
AndyA | 0:96532c59670f | 68 | if(world_readable) { |
AndyA | 0:96532c59670f | 69 | contentLength += 4; |
AndyA | 0:96532c59670f | 70 | } else { |
AndyA | 0:96532c59670f | 71 | contentLength += 5; |
AndyA | 0:96532c59670f | 72 | } |
AndyA | 0:96532c59670f | 73 | // contentLength = |
AndyA | 0:96532c59670f | 74 | // 44 // first part of querystring below |
AndyA | 0:96532c59670f | 75 | // + len_(username) // upper bound on username length |
AndyA | 0:96532c59670f | 76 | // + 5 // &key= |
AndyA | 0:96532c59670f | 77 | // + 10 // api_key length |
AndyA | 0:96532c59670f | 78 | // + 7 // &args=[... |
AndyA | 0:96532c59670f | 79 | // + nTraces*(87+len(maxpoints)) // len({\"y\": [], \"x\": [], \"type\": \"scatter\", \"stream\": {\"token\": \") + 10 + len(\", "maxpoints": )+len(maxpoints)+len(}}) |
AndyA | 0:96532c59670f | 80 | // + (nTraces-1)*2 // ", " in between trace objects |
AndyA | 0:96532c59670f | 81 | // + 22 // ]&kwargs={\"fileopt\": \" |
AndyA | 0:96532c59670f | 82 | // + len_(fileopt) |
AndyA | 0:96532c59670f | 83 | // + 16 // \", \"filename\": \" |
AndyA | 0:96532c59670f | 84 | // + len_(filename) |
AndyA | 0:96532c59670f | 85 | // + 21 // ", "world_readable": |
AndyA | 0:96532c59670f | 86 | // + 4 if world_readable, 5 otherwise |
AndyA | 0:96532c59670f | 87 | // + 1 // closing } |
AndyA | 0:96532c59670f | 88 | //------ |
AndyA | 0:96532c59670f | 89 | // 126 + len_(username) + len_(fileopt) + nTraces*(86+len(maxpoints)) + (nTraces-1)*2 + len_(filename) |
AndyA | 0:96532c59670f | 90 | // |
AndyA | 0:96532c59670f | 91 | // Terminate headers with new lines |
AndyA | 2:d53d74ed68ac | 92 | |
AndyA | 2:d53d74ed68ac | 93 | |
AndyA | 2:d53d74ed68ac | 94 | // big buffer method to generate the string so that length can be measured directly. |
AndyA | 2:d53d74ed68ac | 95 | |
AndyA | 2:d53d74ed68ac | 96 | |
AndyA | 2:d53d74ed68ac | 97 | // fprintf(stderr,"AutoVersion:\n"); |
AndyA | 3:967be3d46701 | 98 | int lineLen = snprintf(buffer,k_bufferSize,"version=2.3&origin=plot&platform=arduino&un=%s&key=%s&args=[",username_,api_key_); |
AndyA | 2:d53d74ed68ac | 99 | for(int i=0; i<nTraces_; i++) { |
AndyA | 2:d53d74ed68ac | 100 | lineLen += snprintf((buffer+lineLen),k_bufferSize-lineLen,"{\"y\": [], \"x\": [], \"type\": \"scatter\", \"stream\": {\"token\": \"%s\", \"maxpoints\": %d}}%s",stream_tokens_[i],maxpoints,((nTraces_ > 1) && (i != nTraces_-1))?", ":""); |
AndyA | 2:d53d74ed68ac | 101 | } |
AndyA | 2:d53d74ed68ac | 102 | lineLen += snprintf((buffer+lineLen),k_bufferSize-lineLen,"]&kwargs={\"fileopt\": \"%s\", \"filename\": \"%s\", \"world_readable\": %s}",fileopt,filename_,world_readable?"true":"false"); |
AndyA | 2:d53d74ed68ac | 103 | |
AndyA | 2:d53d74ed68ac | 104 | // fprintf(stderr,buffer); |
AndyA | 2:d53d74ed68ac | 105 | // fprintf(stderr,"\nLen = %d",lineLen); |
AndyA | 2:d53d74ed68ac | 106 | |
AndyA | 2:d53d74ed68ac | 107 | print_(lineLen); |
AndyA | 0:96532c59670f | 108 | print_("\r\n\r\n"); |
AndyA | 2:d53d74ed68ac | 109 | |
AndyA | 3:967be3d46701 | 110 | lineLen = snprintf(buffer,k_bufferSize,"version=2.3&origin=plot&platform=arduino&un=%s&key=%s&args=[",username_,api_key_); |
AndyA | 2:d53d74ed68ac | 111 | for(int i=0; i<nTraces_; i++) { |
AndyA | 2:d53d74ed68ac | 112 | lineLen += snprintf((buffer+lineLen),k_bufferSize-lineLen,"{\"y\": [], \"x\": [], \"type\": \"scatter\", \"stream\": {\"token\": \"%s\", \"maxpoints\": %d}}%s",stream_tokens_[i],maxpoints,((nTraces_ > 1) && (i != nTraces_-1))?", ":""); |
AndyA | 2:d53d74ed68ac | 113 | } |
AndyA | 2:d53d74ed68ac | 114 | lineLen += snprintf((buffer+lineLen),k_bufferSize-lineLen,"]&kwargs={\"fileopt\": \"%s\", \"filename\": \"%s\", \"world_readable\": %s}",fileopt,filename_,world_readable?"true":"false"); |
AndyA | 2:d53d74ed68ac | 115 | sendFormatedText(buffer,lineLen); |
AndyA | 2:d53d74ed68ac | 116 | |
AndyA | 2:d53d74ed68ac | 117 | print_("\r\n"); |
AndyA | 2:d53d74ed68ac | 118 | /* |
AndyA | 0:96532c59670f | 119 | // Start printing querystring body |
AndyA | 0:96532c59670f | 120 | print_("version=2.2&origin=plot&platform=arduino&un="); |
AndyA | 0:96532c59670f | 121 | print_(username_); |
AndyA | 0:96532c59670f | 122 | print_("&key="); |
AndyA | 0:96532c59670f | 123 | print_(api_key_); |
AndyA | 0:96532c59670f | 124 | print_("&args=["); |
AndyA | 0:96532c59670f | 125 | // print a trace for each token supplied |
AndyA | 0:96532c59670f | 126 | for(int i=0; i<nTraces_; i++) { |
AndyA | 0:96532c59670f | 127 | print_("{\"y\": [], \"x\": [], \"type\": \"scatter\", \"stream\": {\"token\": \""); |
AndyA | 0:96532c59670f | 128 | print_(stream_tokens_[i]); |
AndyA | 0:96532c59670f | 129 | print_("\", \"maxpoints\": "); |
AndyA | 0:96532c59670f | 130 | print_(maxpoints); |
AndyA | 0:96532c59670f | 131 | print_("}}"); |
AndyA | 0:96532c59670f | 132 | if(nTraces_ > 1 && i != nTraces_-1) { |
AndyA | 0:96532c59670f | 133 | print_(", "); |
AndyA | 0:96532c59670f | 134 | } |
AndyA | 0:96532c59670f | 135 | } |
AndyA | 0:96532c59670f | 136 | print_("]&kwargs={\"fileopt\": \""); |
AndyA | 0:96532c59670f | 137 | print_(fileopt); |
AndyA | 0:96532c59670f | 138 | print_("\", \"filename\": \""); |
AndyA | 0:96532c59670f | 139 | print_(filename_); |
AndyA | 0:96532c59670f | 140 | print_("\", \"world_readable\": "); |
AndyA | 0:96532c59670f | 141 | if(world_readable) { |
AndyA | 0:96532c59670f | 142 | print_("true"); |
AndyA | 0:96532c59670f | 143 | } else { |
AndyA | 0:96532c59670f | 144 | print_("false"); |
AndyA | 0:96532c59670f | 145 | } |
AndyA | 0:96532c59670f | 146 | print_("}"); |
AndyA | 0:96532c59670f | 147 | // final newline to terminate the POST |
AndyA | 0:96532c59670f | 148 | print_("\r\n"); |
AndyA | 2:d53d74ed68ac | 149 | */ |
AndyA | 0:96532c59670f | 150 | |
AndyA | 0:96532c59670f | 151 | // |
AndyA | 0:96532c59670f | 152 | // Wait for a response |
AndyA | 0:96532c59670f | 153 | // Parse the response for the "All Streams Go!" and proceed to streaming |
AndyA | 0:96532c59670f | 154 | // if we find it |
AndyA | 0:96532c59670f | 155 | // |
AndyA | 2:d53d74ed68ac | 156 | |
AndyA | 0:96532c59670f | 157 | char allStreamsGo[] = "All Streams Go!"; |
AndyA | 0:96532c59670f | 158 | int asgCnt = 0; // asg stands for All Streams Go |
AndyA | 0:96532c59670f | 159 | char url[] = "\"url\": \"http://107.21.214.199/~"; |
AndyA | 0:96532c59670f | 160 | char fid[4]; |
AndyA | 0:96532c59670f | 161 | int fidCnt = 0; |
AndyA | 0:96532c59670f | 162 | int urlCnt = 0; |
AndyA | 0:96532c59670f | 163 | int usernameCnt = 0; |
AndyA | 0:96532c59670f | 164 | bool proceed = false; |
AndyA | 0:96532c59670f | 165 | bool fidMatched = false; |
AndyA | 0:96532c59670f | 166 | char c; |
AndyA | 0:96532c59670f | 167 | |
AndyA | 0:96532c59670f | 168 | if(log_level < 2) { |
AndyA | 0:96532c59670f | 169 | fprintf(stderr,"... Sent message, waiting for plotly's response...\n"); |
AndyA | 0:96532c59670f | 170 | } |
AndyA | 0:96532c59670f | 171 | |
AndyA | 0:96532c59670f | 172 | if(!dry_run) { |
AndyA | 0:96532c59670f | 173 | while(!proceed) { |
AndyA | 2:d53d74ed68ac | 174 | int32_t dataIn = socket->receive(buffer,k_bufferSize -1); |
AndyA | 1:d532e96fca12 | 175 | if (dataIn < 0) { |
AndyA | 1:d532e96fca12 | 176 | if(log_level < 3) fprintf(stderr,"error reading network socket\n"); |
AndyA | 1:d532e96fca12 | 177 | break; |
AndyA | 1:d532e96fca12 | 178 | } |
AndyA | 0:96532c59670f | 179 | if(dataIn > 0) { |
AndyA | 2:d53d74ed68ac | 180 | buffer[dataIn]=0; |
AndyA | 0:96532c59670f | 181 | |
AndyA | 2:d53d74ed68ac | 182 | if(log_level < 2) fprintf(stderr,buffer); |
AndyA | 0:96532c59670f | 183 | |
AndyA | 0:96532c59670f | 184 | for (int i = 0; i<dataIn; i++) { |
AndyA | 2:d53d74ed68ac | 185 | c = buffer[i]; |
AndyA | 0:96532c59670f | 186 | // |
AndyA | 0:96532c59670f | 187 | // Attempt to read the "All streams go" msg if it exists |
AndyA | 0:96532c59670f | 188 | // by comparing characters as they roll in |
AndyA | 0:96532c59670f | 189 | // |
AndyA | 0:96532c59670f | 190 | |
AndyA | 0:96532c59670f | 191 | if(asgCnt == len_(allStreamsGo) && !proceed) { |
AndyA | 0:96532c59670f | 192 | proceed = true; |
AndyA | 0:96532c59670f | 193 | } else if(allStreamsGo[asgCnt]==c) { |
AndyA | 0:96532c59670f | 194 | asgCnt += 1; |
AndyA | 0:96532c59670f | 195 | } else if(asgCnt > 0) { |
AndyA | 0:96532c59670f | 196 | // reset counter |
AndyA | 0:96532c59670f | 197 | asgCnt = 0; |
AndyA | 0:96532c59670f | 198 | } |
AndyA | 0:96532c59670f | 199 | |
AndyA | 0:96532c59670f | 200 | // |
AndyA | 0:96532c59670f | 201 | // Extract the last bit of the URL from the response |
AndyA | 0:96532c59670f | 202 | // The url is in the form http://107.21.214.199/~USERNAME/FID |
AndyA | 0:96532c59670f | 203 | // We'll character-count up through char url[] and through username_, then start |
AndyA | 0:96532c59670f | 204 | // filling in characters into fid |
AndyA | 0:96532c59670f | 205 | // |
AndyA | 0:96532c59670f | 206 | |
AndyA | 0:96532c59670f | 207 | if(log_level < 3) { |
AndyA | 0:96532c59670f | 208 | if(url[urlCnt]==c && urlCnt < len_(url)) { |
AndyA | 0:96532c59670f | 209 | urlCnt += 1; |
AndyA | 0:96532c59670f | 210 | } else if(urlCnt > 0 && urlCnt < len_(url)) { |
AndyA | 0:96532c59670f | 211 | // Reset counter |
AndyA | 0:96532c59670f | 212 | urlCnt = 0; |
AndyA | 0:96532c59670f | 213 | } |
AndyA | 0:96532c59670f | 214 | if(urlCnt == len_(url) && fidCnt < 4 && !fidMatched) { |
AndyA | 0:96532c59670f | 215 | // We've counted through the url, start counting through the username |
AndyA | 0:96532c59670f | 216 | if(usernameCnt < len_(username_)+2) { |
AndyA | 0:96532c59670f | 217 | usernameCnt += 1; |
AndyA | 0:96532c59670f | 218 | } else { |
AndyA | 0:96532c59670f | 219 | // the url ends with " |
AndyA | 0:96532c59670f | 220 | if(c != '"') { |
AndyA | 0:96532c59670f | 221 | fid[fidCnt] = c; |
AndyA | 0:96532c59670f | 222 | fidCnt += 1; |
AndyA | 0:96532c59670f | 223 | } else if(fidCnt>0) { |
AndyA | 0:96532c59670f | 224 | fidMatched = true; |
AndyA | 0:96532c59670f | 225 | } |
AndyA | 0:96532c59670f | 226 | |
AndyA | 0:96532c59670f | 227 | } |
AndyA | 0:96532c59670f | 228 | } |
AndyA | 0:96532c59670f | 229 | } |
AndyA | 0:96532c59670f | 230 | } |
AndyA | 0:96532c59670f | 231 | } |
AndyA | 0:96532c59670f | 232 | wait(0.1); |
AndyA | 0:96532c59670f | 233 | } |
AndyA | 0:96532c59670f | 234 | } |
AndyA | 0:96532c59670f | 235 | |
AndyA | 0:96532c59670f | 236 | if(!dry_run && !proceed && log_level < 4) { |
AndyA | 0:96532c59670f | 237 | fprintf(stderr,"... Error initializing stream, aborting. Try again or get in touch with Chris at chris@plot.ly\n"); |
AndyA | 0:96532c59670f | 238 | } |
AndyA | 0:96532c59670f | 239 | |
AndyA | 0:96532c59670f | 240 | if(!dry_run && proceed && log_level < 3) { |
AndyA | 0:96532c59670f | 241 | fprintf(stderr,"... A-ok from plotly, All Streams Go!\n"); |
AndyA | 0:96532c59670f | 242 | if(fidMatched) { |
AndyA | 0:96532c59670f | 243 | fprintf(stderr,"... View your streaming plot here: https://plot.ly/~"); |
AndyA | 0:96532c59670f | 244 | fprintf(stderr,username_); |
AndyA | 0:96532c59670f | 245 | fprintf(stderr,"/"); |
AndyA | 0:96532c59670f | 246 | for(int i=0; i<fidCnt; i++) { |
AndyA | 0:96532c59670f | 247 | fprintf(stderr,"%d ",fid[i]); |
AndyA | 0:96532c59670f | 248 | } |
AndyA | 0:96532c59670f | 249 | fprintf(stderr,"\n"); |
AndyA | 0:96532c59670f | 250 | } |
AndyA | 0:96532c59670f | 251 | } |
AndyA | 2:d53d74ed68ac | 252 | |
AndyA | 2:d53d74ed68ac | 253 | if (proceed || dry_run) { |
AndyA | 2:d53d74ed68ac | 254 | initalised = true; |
AndyA | 2:d53d74ed68ac | 255 | } |
AndyA | 2:d53d74ed68ac | 256 | if (socket) { |
AndyA | 2:d53d74ed68ac | 257 | delete socket; |
AndyA | 2:d53d74ed68ac | 258 | socket=NULL; |
AndyA | 2:d53d74ed68ac | 259 | } |
AndyA | 2:d53d74ed68ac | 260 | return initalised; |
AndyA | 0:96532c59670f | 261 | } |
AndyA | 0:96532c59670f | 262 | |
AndyA | 0:96532c59670f | 263 | void plotly::openStream() |
AndyA | 0:96532c59670f | 264 | { |
AndyA | 1:d532e96fca12 | 265 | |
AndyA | 1:d532e96fca12 | 266 | if (!initalised) |
AndyA | 1:d532e96fca12 | 267 | return; |
AndyA | 0:96532c59670f | 268 | // |
AndyA | 0:96532c59670f | 269 | // Start request to stream servers |
AndyA | 0:96532c59670f | 270 | // |
AndyA | 2:d53d74ed68ac | 271 | |
AndyA | 2:d53d74ed68ac | 272 | if (socket) { |
AndyA | 2:d53d74ed68ac | 273 | delete socket; |
AndyA | 2:d53d74ed68ac | 274 | socket = NULL; |
AndyA | 2:d53d74ed68ac | 275 | } |
AndyA | 2:d53d74ed68ac | 276 | |
AndyA | 2:d53d74ed68ac | 277 | |
AndyA | 2:d53d74ed68ac | 278 | if(log_level < 3) fprintf(stderr,"... Connecting to plotly's streaming servers...\n"); |
AndyA | 2:d53d74ed68ac | 279 | |
AndyA | 2:d53d74ed68ac | 280 | |
AndyA | 2:d53d74ed68ac | 281 | if (!dry_run && !socket) { |
AndyA | 2:d53d74ed68ac | 282 | socket = new TCPSocketConnection(); |
AndyA | 2:d53d74ed68ac | 283 | while (socket->connect(dataURL, 80) < 0) { |
AndyA | 2:d53d74ed68ac | 284 | fprintf(stderr,"... Couldn\'t connect to servers... trying again!\n"); |
AndyA | 2:d53d74ed68ac | 285 | wait(10); |
AndyA | 2:d53d74ed68ac | 286 | } |
AndyA | 0:96532c59670f | 287 | } |
AndyA | 2:d53d74ed68ac | 288 | |
AndyA | 2:d53d74ed68ac | 289 | if(log_level < 3) fprintf(stderr,"... Connected to plotly's streaming servers\n... Initializing stream\n"); |
AndyA | 0:96532c59670f | 290 | |
AndyA | 0:96532c59670f | 291 | print_("POST / HTTP/1.1\r\n"); |
AndyA | 3:967be3d46701 | 292 | print_("Host: arduino.plot.ly\r\n"); |
AndyA | 3:967be3d46701 | 293 | print_("User-Agent: Python\r\n"); |
AndyA | 0:96532c59670f | 294 | print_("Transfer-Encoding: chunked\r\n"); |
AndyA | 3:967be3d46701 | 295 | print_("Connection: close\r\n"); |
AndyA | 2:d53d74ed68ac | 296 | print_("plotly-streamtoken: "); |
AndyA | 2:d53d74ed68ac | 297 | print_(stream_tokens_[0]); |
AndyA | 2:d53d74ed68ac | 298 | print_("\r\n"); |
AndyA | 2:d53d74ed68ac | 299 | // if(convertTimestamp) { |
AndyA | 2:d53d74ed68ac | 300 | // print_("plotly-convertTimestamp: \""); |
AndyA | 2:d53d74ed68ac | 301 | // print_(timezone); |
AndyA | 2:d53d74ed68ac | 302 | // print_("\""); |
AndyA | 2:d53d74ed68ac | 303 | // print_("\r\n"); |
AndyA | 2:d53d74ed68ac | 304 | // } |
AndyA | 2:d53d74ed68ac | 305 | print_("\r\n"); |
AndyA | 0:96532c59670f | 306 | |
AndyA | 1:d532e96fca12 | 307 | if(log_level < 3) fprintf(stderr,"... Done initializing, ready to stream!\n"); |
AndyA | 0:96532c59670f | 308 | } |
AndyA | 0:96532c59670f | 309 | |
AndyA | 0:96532c59670f | 310 | void plotly::closeStream() |
AndyA | 0:96532c59670f | 311 | { |
AndyA | 2:d53d74ed68ac | 312 | if (socket) { |
AndyA | 2:d53d74ed68ac | 313 | if (socket->is_connected()) { |
AndyA | 2:d53d74ed68ac | 314 | print_("0\r\n\r\n"); |
AndyA | 2:d53d74ed68ac | 315 | socket->close(); |
AndyA | 2:d53d74ed68ac | 316 | } |
AndyA | 2:d53d74ed68ac | 317 | delete socket; |
AndyA | 2:d53d74ed68ac | 318 | socket=NULL; |
AndyA | 2:d53d74ed68ac | 319 | } |
AndyA | 0:96532c59670f | 320 | } |
AndyA | 1:d532e96fca12 | 321 | |
AndyA | 0:96532c59670f | 322 | void plotly::reconnectStream() |
AndyA | 0:96532c59670f | 323 | { |
AndyA | 2:d53d74ed68ac | 324 | while(!dry_run && (!socket || !socket->is_connected())) { |
AndyA | 0:96532c59670f | 325 | if(log_level<4) fprintf(stderr,"... Disconnected from streaming servers\n"); |
AndyA | 0:96532c59670f | 326 | closeStream(); |
AndyA | 0:96532c59670f | 327 | openStream(); |
AndyA | 0:96532c59670f | 328 | } |
AndyA | 0:96532c59670f | 329 | } |
AndyA | 2:d53d74ed68ac | 330 | |
AndyA | 0:96532c59670f | 331 | void plotly::jsonStart(int i) |
AndyA | 0:96532c59670f | 332 | { |
AndyA | 0:96532c59670f | 333 | // Print the length of the message in hex: |
AndyA | 0:96532c59670f | 334 | // 15 char for the json that wraps the data: {"x": , "y": }\n |
AndyA | 0:96532c59670f | 335 | // + 23 char for the token: , "token": "abcdefghij" |
AndyA | 0:96532c59670f | 336 | // = 38 |
AndyA | 2:d53d74ed68ac | 337 | printHex_(i+38); |
AndyA | 0:96532c59670f | 338 | print_("\r\n{\"x\": "); |
AndyA | 0:96532c59670f | 339 | } |
AndyA | 0:96532c59670f | 340 | void plotly::jsonMiddle() |
AndyA | 0:96532c59670f | 341 | { |
AndyA | 0:96532c59670f | 342 | print_(", \"y\": "); |
AndyA | 0:96532c59670f | 343 | } |
AndyA | 0:96532c59670f | 344 | void plotly::jsonEnd(char *token) |
AndyA | 0:96532c59670f | 345 | { |
AndyA | 0:96532c59670f | 346 | print_(", \"streamtoken\": \""); |
AndyA | 0:96532c59670f | 347 | print_(token); |
AndyA | 2:d53d74ed68ac | 348 | print_("\""); |
AndyA | 2:d53d74ed68ac | 349 | print_("}\n\r\n"); |
AndyA | 0:96532c59670f | 350 | } |
AndyA | 0:96532c59670f | 351 | |
AndyA | 0:96532c59670f | 352 | int plotly::len_(int i) |
AndyA | 0:96532c59670f | 353 | { |
AndyA | 0:96532c59670f | 354 | // int range: -32,768 to 32,767 |
AndyA | 0:96532c59670f | 355 | if(i > 9999) return 5; |
AndyA | 0:96532c59670f | 356 | else if(i > 999) return 4; |
AndyA | 0:96532c59670f | 357 | else if(i > 99) return 3; |
AndyA | 0:96532c59670f | 358 | else if(i > 9) return 2; |
AndyA | 0:96532c59670f | 359 | else if(i > -1) return 1; |
AndyA | 0:96532c59670f | 360 | else if(i > -10) return 2; |
AndyA | 0:96532c59670f | 361 | else if(i > -100) return 3; |
AndyA | 0:96532c59670f | 362 | else if(i > -1000) return 4; |
AndyA | 0:96532c59670f | 363 | else if(i > -10000) return 5; |
AndyA | 0:96532c59670f | 364 | else return 6; |
AndyA | 0:96532c59670f | 365 | } |
AndyA | 0:96532c59670f | 366 | int plotly::len_(unsigned long i) |
AndyA | 0:96532c59670f | 367 | { |
AndyA | 0:96532c59670f | 368 | // max length of unsigned long: 4294967295 |
AndyA | 0:96532c59670f | 369 | if(i > 999999999) return 10; |
AndyA | 0:96532c59670f | 370 | else if(i > 99999999) return 9; |
AndyA | 0:96532c59670f | 371 | else if(i > 9999999) return 8; |
AndyA | 0:96532c59670f | 372 | else if(i > 999999) return 7; |
AndyA | 0:96532c59670f | 373 | else if(i > 99999) return 6; |
AndyA | 0:96532c59670f | 374 | else if(i > 9999) return 5; |
AndyA | 0:96532c59670f | 375 | else if(i > 999) return 4; |
AndyA | 0:96532c59670f | 376 | else if(i > 99) return 3; |
AndyA | 0:96532c59670f | 377 | else if(i > 9) return 2; |
AndyA | 0:96532c59670f | 378 | else return 1; |
AndyA | 0:96532c59670f | 379 | } |
AndyA | 0:96532c59670f | 380 | int plotly::len_(char *i) |
AndyA | 0:96532c59670f | 381 | { |
AndyA | 0:96532c59670f | 382 | return strlen(i); |
AndyA | 0:96532c59670f | 383 | } |
AndyA | 0:96532c59670f | 384 | void plotly::plot(unsigned long x, int y, char *token) |
AndyA | 0:96532c59670f | 385 | { |
AndyA | 2:d53d74ed68ac | 386 | if (!initalised) |
AndyA | 2:d53d74ed68ac | 387 | return; |
AndyA | 2:d53d74ed68ac | 388 | |
AndyA | 0:96532c59670f | 389 | reconnectStream(); |
AndyA | 2:d53d74ed68ac | 390 | |
AndyA | 2:d53d74ed68ac | 391 | // int len = snprintf(buffer,k_bufferSize,"{\"x\": %lu, \"y\": %d, \"streamtoken\": \"%s\"}\n", x,y,token); |
AndyA | 2:d53d74ed68ac | 392 | // len = snprintf(buffer,k_bufferSize,"%X\r\n{\"x\": %lu, \"y\": %d, \"streamtoken\": \"%s\"}\n\r\n",len, x,y,token); |
AndyA | 2:d53d74ed68ac | 393 | int len = snprintf(buffer,k_bufferSize,"{\"x\": %lu, \"y\": %d}\n", x,y); |
AndyA | 2:d53d74ed68ac | 394 | len = snprintf(buffer,k_bufferSize,"%x\r\n{\"x\": %lu, \"y\": %d}\n\r\n",len, x,y); |
AndyA | 2:d53d74ed68ac | 395 | sendFormatedText(buffer,len); |
AndyA | 0:96532c59670f | 396 | } |
AndyA | 0:96532c59670f | 397 | |
AndyA | 0:96532c59670f | 398 | void plotly::plot(unsigned long x, float y, char *token) |
AndyA | 0:96532c59670f | 399 | { |
AndyA | 2:d53d74ed68ac | 400 | if (!initalised) |
AndyA | 2:d53d74ed68ac | 401 | return; |
AndyA | 2:d53d74ed68ac | 402 | |
AndyA | 0:96532c59670f | 403 | reconnectStream(); |
AndyA | 0:96532c59670f | 404 | |
AndyA | 2:d53d74ed68ac | 405 | int len = snprintf(buffer,k_bufferSize,"{\"x\": %lu, \"y\": %.3f}\n", x,y); |
AndyA | 2:d53d74ed68ac | 406 | len = snprintf(buffer,k_bufferSize,"%x\r\n{\"x\": %lu, \"y\": %.3f}\n\r\n",len, x,y); |
AndyA | 2:d53d74ed68ac | 407 | // int len = snprintf(buffer,k_bufferSize,"{\"x\": %lu, \"y\": %.3f, \"streamtoken\": \"%s\"}\n", x,y,token); |
AndyA | 2:d53d74ed68ac | 408 | // len = snprintf(buffer,k_bufferSize,"%X\r\n{\"x\": %lu, \"y\": %.3f, \"streamtoken\": \"%s\"}\n\r\n",len, x,y,token); |
AndyA | 2:d53d74ed68ac | 409 | sendFormatedText(buffer,len); |
AndyA | 0:96532c59670f | 410 | } |
AndyA | 0:96532c59670f | 411 | |
AndyA | 1:d532e96fca12 | 412 | bool plotly::print_(int d) |
AndyA | 0:96532c59670f | 413 | { |
AndyA | 2:d53d74ed68ac | 414 | int32_t len = snprintf(buffer,k_bufferSize,"%d",d); |
AndyA | 2:d53d74ed68ac | 415 | return sendFormatedText(buffer,len); |
AndyA | 2:d53d74ed68ac | 416 | } |
AndyA | 1:d532e96fca12 | 417 | |
AndyA | 1:d532e96fca12 | 418 | bool plotly::print_(unsigned long d) |
AndyA | 0:96532c59670f | 419 | { |
AndyA | 2:d53d74ed68ac | 420 | int32_t len = snprintf(buffer,k_bufferSize,"%lu",d); |
AndyA | 2:d53d74ed68ac | 421 | return sendFormatedText(buffer,len); |
AndyA | 2:d53d74ed68ac | 422 | } |
AndyA | 2:d53d74ed68ac | 423 | |
AndyA | 2:d53d74ed68ac | 424 | bool plotly::print_(float d) |
AndyA | 2:d53d74ed68ac | 425 | { |
AndyA | 2:d53d74ed68ac | 426 | int32_t len = snprintf(buffer,k_bufferSize,"%f",d); |
AndyA | 2:d53d74ed68ac | 427 | return sendFormatedText(buffer,len); |
AndyA | 2:d53d74ed68ac | 428 | } |
AndyA | 2:d53d74ed68ac | 429 | |
AndyA | 2:d53d74ed68ac | 430 | bool plotly::print_(char *d) |
AndyA | 2:d53d74ed68ac | 431 | { |
AndyA | 2:d53d74ed68ac | 432 | int32_t len = snprintf(buffer,k_bufferSize,"%s",d); |
AndyA | 2:d53d74ed68ac | 433 | return sendFormatedText(buffer,len); |
AndyA | 2:d53d74ed68ac | 434 | } |
AndyA | 2:d53d74ed68ac | 435 | |
AndyA | 2:d53d74ed68ac | 436 | bool plotly::printHex_(uint16_t d) |
AndyA | 2:d53d74ed68ac | 437 | { |
AndyA | 2:d53d74ed68ac | 438 | int32_t len = snprintf(buffer,k_bufferSize,"%X",d); |
AndyA | 2:d53d74ed68ac | 439 | return sendFormatedText(buffer,len); |
AndyA | 2:d53d74ed68ac | 440 | } |
AndyA | 2:d53d74ed68ac | 441 | |
AndyA | 2:d53d74ed68ac | 442 | bool plotly::sendFormatedText(char* data, int size) |
AndyA | 2:d53d74ed68ac | 443 | { |
AndyA | 2:d53d74ed68ac | 444 | if(log_level < 2) { |
AndyA | 2:d53d74ed68ac | 445 | fprintf(stderr,"%s",data); |
AndyA | 2:d53d74ed68ac | 446 | } |
AndyA | 1:d532e96fca12 | 447 | if(!dry_run) { |
AndyA | 2:d53d74ed68ac | 448 | if (!socket) { |
AndyA | 2:d53d74ed68ac | 449 | fprintf(stderr,"\nTX failed, No network socket exists\n"); |
AndyA | 2:d53d74ed68ac | 450 | return false; |
AndyA | 2:d53d74ed68ac | 451 | } |
AndyA | 2:d53d74ed68ac | 452 | if (!(socket->is_connected())) { |
AndyA | 2:d53d74ed68ac | 453 | fprintf(stderr,"\nTX failed, Network socket not connected\n"); |
AndyA | 2:d53d74ed68ac | 454 | return false; |
AndyA | 2:d53d74ed68ac | 455 | } |
AndyA | 2:d53d74ed68ac | 456 | |
AndyA | 2:d53d74ed68ac | 457 | int32_t sent = socket->send_all(data,size); |
AndyA | 2:d53d74ed68ac | 458 | if (sent == size) |
AndyA | 1:d532e96fca12 | 459 | return true; |
AndyA | 1:d532e96fca12 | 460 | else { |
AndyA | 2:d53d74ed68ac | 461 | fprintf(stderr,"\nTX failed to send _%s_ Sent %d of %d bytes\n",data,sent,size); |
AndyA | 2:d53d74ed68ac | 462 | echoRxData(); |
AndyA | 1:d532e96fca12 | 463 | return false; |
AndyA | 1:d532e96fca12 | 464 | } |
AndyA | 1:d532e96fca12 | 465 | } else |
AndyA | 1:d532e96fca12 | 466 | return true; |
AndyA | 0:96532c59670f | 467 | } |
AndyA | 0:96532c59670f | 468 | |
AndyA | 2:d53d74ed68ac | 469 | void plotly::echoRxData() |
AndyA | 0:96532c59670f | 470 | { |
AndyA | 2:d53d74ed68ac | 471 | |
AndyA | 2:d53d74ed68ac | 472 | int32_t dataIn = socket->receive(buffer,k_bufferSize -1); |
AndyA | 2:d53d74ed68ac | 473 | if (dataIn < 0) { |
AndyA | 2:d53d74ed68ac | 474 | if (socket->is_connected()) { |
AndyA | 2:d53d74ed68ac | 475 | fprintf(stderr,"error reading network socket. Closing it\n"); |
AndyA | 2:d53d74ed68ac | 476 | socket->close(); |
AndyA | 2:d53d74ed68ac | 477 | delete socket; |
AndyA | 2:d53d74ed68ac | 478 | socket = NULL; |
AndyA | 2:d53d74ed68ac | 479 | } |
AndyA | 1:d532e96fca12 | 480 | else { |
AndyA | 2:d53d74ed68ac | 481 | fprintf(stderr,"error reading network socket, socket isn't connected\n"); |
AndyA | 2:d53d74ed68ac | 482 | delete socket; |
AndyA | 2:d53d74ed68ac | 483 | socket = NULL; |
AndyA | 2:d53d74ed68ac | 484 | } |
AndyA | 2:d53d74ed68ac | 485 | } |
AndyA | 2:d53d74ed68ac | 486 | if(dataIn > 0) { |
AndyA | 2:d53d74ed68ac | 487 | buffer[dataIn]=0; |
AndyA | 2:d53d74ed68ac | 488 | fprintf(stderr,"Rx Data __"); |
AndyA | 2:d53d74ed68ac | 489 | fprintf(stderr,buffer); |
AndyA | 2:d53d74ed68ac | 490 | fprintf(stderr,"__\n"); |
AndyA | 2:d53d74ed68ac | 491 | } |
AndyA | 2:d53d74ed68ac | 492 | |
AndyA | 2:d53d74ed68ac | 493 | } |