void plotly::plot(String x, float y){
jsonStart(len_(x)+len_(y));
print_(x);
jsonMiddle();
print_(y);
jsonEnd();
}
void plotly::plot(char *x, int y){
jsonStart(len_(x)+len_(y));
print_(x);
jsonMiddle();
print_(y);
jsonEnd();
}
void plotly::plot(unsigned long x, int y){
jsonStart(len_(x)+len_(y));
print_(x);
jsonMiddle();
print_(y);
jsonEnd();
}
void plotly::plot(unsigned long x, int y, char *token){
reconnectStream();
jsonStart(len_(x)+len_(y));
print_(x);
jsonMiddle();
print_(y);
jsonEnd(token);
}
void plotly::plot(unsigned long x, float y, char *token){
reconnectStream();
char s_[15];
my_dtostrf(y,2,3,s_);
jsonStart(len_(x)+len_(s_)-1);
print_(x);
jsonMiddle();
print_(y);
jsonEnd(token);
}
bool plotly::init(){
//
// Validate a stream with a REST post to plotly
//
if(dry_run && log_level < 3){
Serial.println(F("... This is a dry run, we are not connecting to plotly's servers..."));
}
else if(log_level < 3) {
Serial.println(F("... Attempting to connect to plotly's REST servers"));
}
while ( !client.connect("plot.ly", 80) ) {
if(log_level < 4){
Serial.println(F("... Couldn\'t connect to plotly's REST servers... trying again!"));
}
fibonacci_ += fibonacci_;
delay(min(fibonacci_, 60000));
}
fibonacci_ = 1;
if(log_level < 3){} Serial.println(F("... Connected to plotly's REST servers"));
if(log_level < 3){} Serial.println(F("... Sending HTTP Post to plotly"));
print_(F("POST /clientresp HTTP/1.1\r\n"));
print_(F("Host: plot.ly\r\n"));
print_(F("User-Agent: SparkCore/0.0.1\r\n"));
print_(F("Content-Type: application/x-www-form-urlencoded\r\n"));
print_(F("Content-Length: "));
int contentLength = 126 + len_(username_) + len_(fileopt) + nTraces_*(87+len_(maxpoints)) + (nTraces_-1)*2 + len_(filename_);
if(world_readable){
contentLength += 4;
} else{
contentLength += 5;
}
print_(contentLength);
// contentLength =
// 44 // first part of querystring below
// + len_(username) // upper bound on username length
// + 5 // &key=
// + 10 // api_key length
// + 7 // &args=[...
// + nTraces*(87+len(maxpoints)) // len({\"y\": [], \"x\": [], \"type\": \"scatter\", \"stream\": {\"token\": \") + 10 + len(\", "maxpoints": )+len(maxpoints)+len(}})
// + (nTraces-1)*2 // ", " in between trace objects
// + 22 // ]&kwargs={\"fileopt\": \"
// + len_(fileopt)
// + 16 // \", \"filename\": \"
// + len_(filename)
// + 21 // ", "world_readable":
// + 4 if world_readable, 5 otherwise
// + 1 // closing }
//------
// 126 + len_(username) + len_(fileopt) + nTraces*(86+len(maxpoints)) + (nTraces-1)*2 + len_(filename)
//
// Terminate headers with new lines
print_(F("\r\n\r\n"));
// Start printing querystring body
print_(F("version=2.3&origin=plot&platform=arduino&un="));
print_(username_);
print_(F("&key="));
print_(api_key_);
print_(F("&args=["));
// print a trace for each token supplied
for(int i=0; i<nTraces_; i++){
print_(F("{\"y\": [], \"x\": [], \"type\": \"scatter\", \"stream\": {\"token\": \""));
print_(stream_tokens_[i]);
print_(F("\", \"maxpoints\": "));
print_(maxpoints);
print_(F("}}"));
if(nTraces_ > 1 && i != nTraces_-1){
print_(F(", "));
}
}
print_(F("]&kwargs={\"fileopt\": \""));
print_(fileopt);
print_(F("\", \"filename\": \""));
print_(filename_);
print_(F("\", \"world_readable\": "));
if(world_readable){
print_("true");
} else{
print_("false");
}
print_(F("}"));
// final newline to terminate the POST
print_(F("\r\n"));
//
// Wait for a response
// Parse the response for the "All Streams Go!" and proceed to streaming
// if we find it
//
char allStreamsGo[] = "All Streams Go!";
int asgCnt = 0; // asg stands for All Streams Go
char url[] = "\"url\": \"http://plot.ly/~";
char fid[4];
int fidCnt = 0;
int urlCnt = 0;
int usernameCnt = 0;
bool proceed = false;
bool fidMatched = false;
if(log_level < 2){
Serial.println(F("... Sent message, waiting for plotly's response..."));
}
if(!dry_run){
while (client.connected() && (!proceed || client.available())) {
if (client.available()) {
char c = client.read();
if(log_level < 2) Serial.print(c);
//
// Attempt to read the "All streams go" msg if it exists
// by comparing characters as they roll in
//
if(asgCnt == len_(allStreamsGo) && !proceed){
proceed = true;
}
else if(allStreamsGo[asgCnt]==c){
asgCnt += 1;
} else if(asgCnt > 0){
// reset counter
asgCnt = 0;
}
//
// Extract the last bit of the URL from the response
// The url is in the form http://107.21.214.199/~USERNAME/FID
// We'll character-count up through char url[] and through username_, then start
// filling in characters into fid
//
if(log_level < 3){
if(url[urlCnt]==c && urlCnt < len_(url)){
urlCnt += 1;
} else if(urlCnt > 0 && urlCnt < len_(url)){
// Reset counter
urlCnt = 0;
}
if(urlCnt == len_(url) && fidCnt < 4 && !fidMatched){
// We've counted through the url, start counting through the username
if(usernameCnt < len_(username_)+2){
usernameCnt += 1;
} else {
// the url ends with "
if(c != '"'){
fid[fidCnt] = c;
fidCnt += 1;
} else if(fidCnt>0){
fidMatched = true;
}
}
}
}
}
}
client.stop();
}
if(!dry_run && !proceed && log_level < 4){
Serial.println(F("... Error initializing stream, aborting. Try again or get in touch with Chris at [email protected]"));
}
if(!dry_run && proceed && log_level < 3){
Serial.println(F("... A-ok from plotly, All Streams Go!"));
if(fidMatched){
Serial.print(F("... View your streaming plot here: https://plot.ly/~"));
Serial.print(username_);
Serial.print(F("/"));
for(int i=0; i<fidCnt; i++){
Serial.print(fid[i]);
}
Serial.println(F(""));
}
}
return proceed;
}
void plotly::begin(unsigned long maxpoints){
/*
* Validate a stream with a REST post to plotly
*/
if(DRY_RUN && LOG_LEVEL < 3){ Serial.println(F("... This is a dry run, we are not connecting to plotly's servers...")); }
else{
if(LOG_LEVEL < 3) { Serial.println(F("... Attempting to connect to plotly's REST servers...")); }
#define WEBSITE "plot.ly"
uint32_t ip = 0;
// Try looking up the website's IP address
while (ip == 0) {
if (! cc3000.getHostByName(WEBSITE, &ip)) {
if(LOG_LEVEL < 4) Serial.println(F("... Couldn't resolve Plotly's IP address! Get in touch with [email protected]"));
}
delay(500);
}
client = cc3000.connectTCP(ip, 80);
while ( !client.connected() ) {
if(LOG_LEVEL < 4){ Serial.println(F("... Couldn\'t connect to plotly's REST servers... trying again!")); }
delay(1000);
}
}
if(LOG_LEVEL < 3) Serial.println(F("... Connected to plotly's REST servers"));
if(LOG_LEVEL < 3) Serial.println(F("... Sending HTTP Post to plotly"));
print_(F("POST /clientresp HTTP/1.1\r\n"));
print_(F("Host: 107.21.214.199\r\n"));
print_(F("User-Agent: Arduino/0.5.1\r\n"));
print_(F("Content-Length: "));
int contentLength = 202 + len_(username_) + len_(maxpoints) + len_(filename_);
print_(contentLength);
/* contentLength =
* 44 // first part of querystring below
* + len_(username) // upper bound on username length
* + 5 // &key=
* + 10 // api_key length
* + 66 // &args=[...
* + 10 // stream_token length
* + 16 // "\", \"maxpoints\": "
* + len_(maxpoints)
* + 49 // }}]&kwargs={\"fileopt\": \"overwrite\", \"filename\": \"
* + len_(filename)
* + 1 // closing "}
*------
* 202 + len_(username) + len_(maxpoints) + len_(filename)
*/
print_(F("\r\n\r\n"));
print_(F("version=0.2&origin=plot&platform=arduino&un="));
print_(username_);
print_(F("&key="));
print_(api_key_);
print_(F("&args=[{\"y\": [], \"x\": [], \"type\": \"scatter\", \"stream\": {\"token\": \""));
print_(stream_token_);
print_(F("\", \"maxpoints\": "));
print_(maxpoints);
print_(F("}}]&kwargs={\"fileopt\": \"overwrite\", \"filename\": \""));
print_(filename_);
print_(F("\"}"));
// final newline to terminate the post
print_(F("\r\n"));
/*
* Wait for a response
* Parse the response for the "All Streams Go!" and proceed to streaming
* if we find it
*/
char allStreamsGo[] = "All Streams Go!";
int asgCnt = 0; // asg stands for All Streams Go
char url[] = "\"url\": \"http://107.21.214.199/~";
char fid[4];
int fidCnt = 0;
int urlCnt = 0;
int usernameCnt = 0;
int urlLower = 0;
int urlUpper = 0;
bool proceed = false;
bool fidMatched = false;
if(LOG_LEVEL < 3) Serial.println(F("... Sent message, plotly's response:"));
if(!DRY_RUN){
while(client.connected()){
if(client.available()){
char c = client.read();
if(LOG_LEVEL < 2) Serial.print(c);
/*
* Attempt to read the "All streams go" msg if it exists
* by comparing characters as they roll in
*/
if(asgCnt == len_(allStreamsGo) && !proceed){
proceed = true;
}
else if(allStreamsGo[asgCnt]==c){
asgCnt += 1;
} else if(asgCnt > 0){
// reset counter
asgCnt = 0;
}
/*
* Extract the last bit of the URL from the response
* The url is in the form http://107.21.214.199/~USERNAME/FID
* We'll character-count up through char url[] and through username_, then start
* filling in characters into fid
*/
if(LOG_LEVEL < 3){
if(url[urlCnt]==c && urlCnt < len_(url)){
urlCnt += 1;
} else if(urlCnt > 0 && urlCnt < len_(url)){
// Reset counter
urlCnt = 0;
}
if(urlCnt == len_(url) && fidCnt < 4 && !fidMatched){
// We've counted through the url, start counting through the username
if(usernameCnt < len_(username_)+2){
usernameCnt += 1;
} else {
// the url ends with "
if(c != '"'){
fid[fidCnt] = c;
fidCnt += 1;
} else if(fidCnt>0){
fidMatched = true;
}
}
}
}
}
}
client.close();
}
if(!proceed && LOG_LEVEL < 4){
Serial.print(F("... Error initializing stream, aborting. Try again or get in touch with Chris at [email protected]"));
return;
}
if(LOG_LEVEL < 3){
Serial.println(F("... A-ok from plotly, All Streams Go!"));
if(fidMatched){
Serial.print(F("... View your streaming plot here: https://plot.ly/~"));
Serial.print(username_);
Serial.print(F("/"));
for(int i=0; i<fidCnt; i++){
Serial.print(fid[i]);
}
Serial.println(F(""));
}
}
/*
* Start request to stream servers
*/
if(LOG_LEVEL < 3) Serial.println(F("... Connecting to plotly's streaming servers..."));
#define STREAM_SERVER "stream.plot.ly"
uint32_t stream_ip = 0;
// Try looking up the website's IP address
while (stream_ip == 0) {
if (! cc3000.getHostByName(STREAM_SERVER, &stream_ip)) {
if(LOG_LEVEL < 4) Serial.println(F("Couldn't resolve!"));
}
}
client = cc3000.connectTCP(stream_ip, 80);
while ( !client.connected() ) {
if(LOG_LEVEL < 4) Serial.println(F("... Couldn\'t connect to servers.... trying again!"));
delay(1000);
}
if(LOG_LEVEL < 3) Serial.println(F("... Connected to plotly's streaming servers\n... Initializing stream"));
print_(F("POST / HTTP/1.1\r\n"));
print_(F("Host: 127.0.0.1\r\n"));
print_(F("User-Agent: Python\r\n"));
print_(F("Transfer-Encoding: chunked\r\n"));
print_(F("Connection: close\r\n"));
print_(F("plotly-streamtoken: "));
print_(stream_token_);
print_(F("\r\nplotly-convertTimestamp: America/Montreal"));
print_(F("\r\n\r\n"));
if(LOG_LEVEL < 3) Serial.println(F("... Done initializing, ready to stream!"));
}
void plotly::print_(unsigned long s){
if(VERBOSE){ Serial.print(s); }
if(!DRY_RUN) { client.print(s); }
nChar_ += len_(s);
}
