CO2-ampel/software
2
0
Fork 0
Code Issues Pull requests Projects Releases 2 Wiki Activity
software/ampel-firmware/web_server.cpp

304 lines
13 KiB
C++
Raw Normal View History

Initial commit
2021-05-09 18:45:59 +00:00
#include "web_server.h"
namespace config {
// Values should be defined in config.h
#ifdef HTTP_USER
const char *http_user = HTTP_USER;
#else
const char *http_user = "";
#endif
#ifdef HTTP_PASSWORD
const char *http_password = HTTP_PASSWORD;
#else
const char *http_password = "";
#endif
}
namespace web_server {
const char *header_template;
const char *body_template;
const char *script_template;
void handleWebServerRoot();
void handlePageNotFound();
new version 0_2_2 from stuttgart
2021-11-15 12:45:36 +00:00
void handleWebServerCommand();
Initial commit
2021-05-09 18:45:59 +00:00
#ifdef AMPEL_CSV
void handleDeleteCSV();
void handleWebServerCSV();
#endif
#if defined(ESP8266)
ESP8266WebServer http(80); // Create a webserver object that listens for HTTP request on port 80
#elif defined(ESP32)
WebServer http(80);
#endif
void update() {
http.handleClient(); // Listen for HTTP requests from clients
}
void initialize() {
header_template =
PSTR("<!doctype html><html lang=en>"
"<head>\n"
"<title>%d ppm - CO2 SENSOR - %s - %s</title>\n"
"<meta charset='UTF-8'>\n"
// HfT Favicon
"<link rel='icon' type='image/png' sizes='16x16' href='data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAABHNCSVQICAgIfAhkiAAAAHtJREFUOE9jvMnA+5+BAsBIFQMkl85h+P3kGcOb8jqwW+TPH2H4de0GA29UGNxtfx49YWCRk0HwHz5iuKegwwB2AS4DkA2F6VR6cAWsEQbgBqDY9vARw/ejJ+Au+LxsFcPz6BSwHpwGYPMCSS6gyAAKYhESiKMGjPgwAADopHVhn5ynEwAAAABJRU5ErkJggg=='/>\n"
// Responsive grid:
"<link rel='stylesheet' href='https://unpkg.com/purecss@2.0.3/build/pure-min.css'>\n"
"<link rel='stylesheet' href='https://unpkg.com/purecss@2.0.3/build/grids-responsive-min.css'>\n"
// JS Graphs:
"<script src='https://cdn.plot.ly/plotly-basic-1.58.2.min.js'></script>\n"
// Fullscreen
"<meta name='viewport' content='width=device-width, initial-scale=1'>\n"
// Refresh after every measurement.
// "<meta http-equiv='refresh' content='%d'>\n"
"</head>\n"
"<body>\n"
new version 0_2_2 from stuttgart
2021-11-15 12:45:36 +00:00
"<div class='pure-g'><div class='pure-u-1'><div class='pure-menu'><p class='pure-menu-heading'>HfT-Stuttgart CO<sub>2</sub> Ampel</p></div></div>\n"
Initial commit
2021-05-09 18:45:59 +00:00
"<div class='pure-u-1'><ul class='pure-menu pure-menu-horizontal pure-menu-list'>\n"
"<li class='pure-menu-item'><a href='#table' class='pure-menu-link'>Info</a></li>\n"
#ifdef AMPEL_CSV
"<li class='pure-menu-item'><a href='#graph' class='pure-menu-link'>Graph</a></li>\n"
"<li class='pure-menu-item'><a href='#log' class='pure-menu-link'>Log</a></li>\n"
new version 0_2_2 from stuttgart
2021-11-15 12:45:36 +00:00
"<li class='pure-menu-item'><a href='%s' class='pure-menu-link'>Download CSV</a></li>\n"
Initial commit
2021-05-09 18:45:59 +00:00
#endif
"<li class='pure-menu-item' id='led'>&#11044;</li>\n" // LED
"</ul></div></div>\n"
"<script>\n"
// Show a colored dot on the webpage, with a similar color than on LED Ring.
"hue=(1-(Math.min(Math.max(parseInt(document.title),500),1600)-500)/1100)*120;\n"
"document.getElementById('led').style.color=['hsl(',hue,',100%%,50%%)'].join('');\n"
new version 0_2_2 from stuttgart
2021-11-15 12:45:36 +00:00
"</script>\n"
"<div class='pure-g'>\n"
"<div class='pure-u-1' id='graph'></div>\n"// Graph placeholder
Initial commit
2021-05-09 18:45:59 +00:00
"</div>\n"
"<div class='pure-g'>\n"
new version 0_2_2 from stuttgart
2021-11-15 12:45:36 +00:00
"<table id='table' class='pure-table-striped pure-u-1 pure-u-md-1-2'>\n");
body_template =
PSTR("<tr><th colspan='2'>%s</th></tr>\n"
Initial commit
2021-05-09 18:45:59 +00:00
"<tr><td>CO<sub>2</sub> concentration</td><td>%5d ppm</td></tr>\n"
"<tr><td>Temperature</td><td>%.1f&#8451;</td></tr>\n"
"<tr><td>Humidity</td><td>%.1f%%</td></tr>\n"
"<tr><td>Last measurement</td><td>%s</td></tr>\n"
"<tr><td>Measurement timestep</td><td>%5d s</td></tr>\n"
#ifdef AMPEL_CSV
"<tr><th colspan='2'>CSV</th></tr>\n"
"<tr><td>Last write</td><td>%s</td></tr>\n"
"<tr><td>Timestep</td><td>%5d s</td></tr>\n"
"<tr><td>Available drive space</td><td>%d kB</td></tr>\n"
#endif
#ifdef AMPEL_MQTT
"<tr><th colspan='2'>MQTT</th></tr>\n"
"<tr><td>Connected?</td><td>%s</td></tr>\n"
"<tr><td>Last publish</td><td>%s</td></tr>\n"
"<tr><td>Timestep</td><td>%5d s</td></tr>\n"
#endif
#if defined(AMPEL_LORAWAN) && defined(ESP32)
"<tr><th colspan='2'>LoRaWAN</th></tr>\n"
"<tr><td>Connected?</td><td>%s</td></tr>\n"
"<tr><td>Frequency</td><td>%s MHz</td></tr>\n"
"<tr><td>Last transmission</td><td>%s</td></tr>\n"
"<tr><td>Timestep</td><td>%5d s</td></tr>\n"
#endif
"<tr><th colspan='2'>Sensor</th></tr>\n"
"<tr><td>Temperature offset</td><td>%.1fK</td></tr>\n" //TODO: Read it from sensor?
new version 0_2_2 from stuttgart
2021-11-15 12:45:36 +00:00
"<tr><td>Auto-calibration?</td><td>%s</td></tr>\n"
Initial commit
2021-05-09 18:45:59 +00:00
"<tr><td>Local address</td><td><a href='http://%s.local/'>%s.local</a></td></tr>\n"
"<tr><td>Local IP</td><td><a href='http://%s'>%s</a></td></tr>\n"
new version 0_2_2 from stuttgart
2021-11-15 12:45:36 +00:00
"<tr><td>MAC</td><td>%s</td></tr>\n"
Initial commit
2021-05-09 18:45:59 +00:00
"<tr><td>Free heap space</td><td>%6d bytes</td></tr>\n"
new version 0_2_2 from stuttgart
2021-11-15 12:45:36 +00:00
"<tr><td>Largest heap block</td><td>%6d bytes</td></tr>\n"
Initial commit
2021-05-09 18:45:59 +00:00
"<tr><td>Max loop duration</td><td>%5d ms</td></tr>\n"
"<tr><td>Board</td><td>%s</td></tr>\n"
new version 0_2_2 from stuttgart
2021-11-15 12:45:36 +00:00
"<tr><td>Ampel firmware</td><td>%s</td></tr>\n"
Initial commit
2021-05-09 18:45:59 +00:00
"<tr><td>Uptime</td><td>%2d d %4d h %02d min %02d s</td></tr>\n"
"</table>\n"
"<div id='log' class='pure-u-1 pure-u-md-1-2'></div>\n"
new version 0_2_2 from stuttgart
2021-11-15 12:45:36 +00:00
"<form action='/command'><input type='text' id='send' name='send'><input type='submit' value='Send'></form>\n"
Initial commit
2021-05-09 18:45:59 +00:00
#ifdef AMPEL_CSV
"<form action='/delete_csv' method='POST' onsubmit=\"return confirm('Are you really sure you want to delete all data?') && (document.body.style.cursor = 'wait');\">"
"<input type='submit' value='Delete CSV'/>"
"</form>\n"
#endif
"</div>\n");
script_template =
PSTR(
"<a href='https://transfer.hft-stuttgart.de/gitlab/co2ampel/ampel-firmware' target='_blank'>Source code</a>\n"
"<a href='https://transfer.hft-stuttgart.de/gitlab/co2ampel/ampel-documentation' target='_blank'>Documentation</a>\n"
#ifdef AMPEL_CSV
"<script>\n"
"document.body.style.cursor = 'default';\n"
new version 0_2_2 from stuttgart
2021-11-15 12:45:36 +00:00
"fetch('%s',{credentials:'include'})\n"
Initial commit
2021-05-09 18:45:59 +00:00
".then(response=>response.text())\n"
".then(csvText=>csvToTable(csvText))\n"
".then(htmlTable=>addLogTableToPage(htmlTable))\n"
".then(_=>Plotly.newPlot('graph',data,layout,{displaylogo:false}))\n"
".catch(e=>console.error(e));\n"
"xs=[];\n"
"data=[{x:xs,y:[],type:'scatter',name:'CO<sub>2</sub>',line:{color:'#2ca02c'}},\n"
"{x:xs,y:[],type:'scatter',name:'Temperature',yaxis:'y2',line:{color:'#ff7f0e',dash:'dot'}},\n"
"{x:xs,y:[],type:'scatter',name:'Humidity',yaxis:'y3',line:{color:'#1f77b4',dash:'dot'}}];\n"
"layout={height:600,title:'%s',legend:{xanchor:'right',x:0.2,y:1.0},\n"
"xaxis:{domain:[0.0,0.85]},yaxis:{ticksuffix:'ppm',range:[0,2000],dtick:200},\n"
"yaxis2:{overlaying:'y',side:'right',ticksuffix:'°C',position:0.9,anchor:'free',range:[0,30],dtick:3},\n"
"yaxis3:{overlaying:'y',side:'right',ticksuffix:'%%',position:0.95,anchor:'free',range:[0,100],dtick:10}\n"
"};\n"
"function csvToTable(csvText) {\n"
"csvText=csvText.trim();\n"
"lines=csvText.split('\\n');\n"
"table=document.createElement('table');\n"
"table.className='pure-table-striped';\n"
"n=lines.length;\n"
"lines.forEach((line,i)=>{\n"
"fields=line.split(';');\n"
"xs.push(fields[0]);\n"
"data[0]['y'].push(fields[1]);\n"
"data[1]['y'].push(fields[2]);\n"
"data[2]['y'].push(fields[3]);\n"
"if(i>4 && i<n-12){if(i==5){fields=['...','...','...','...']}else{return;}}\n"
"row=document.createElement('tr');\n"
"fields.forEach((field,index)=>{\n"
"cell=document.createElement(i<2?'th':'td');\n"
"cell.appendChild(document.createTextNode(field));\n"
"row.appendChild(cell);});\n"
"table.appendChild(row);});\n"
"return table;}\n"
"function addLogTableToPage(table){document.getElementById('log').appendChild(table);}\n"
"</script>\n"
#endif
"</body>\n"
"</html>");
// Web-server
http.on("/", handleWebServerRoot);
new version 0_2_2 from stuttgart
2021-11-15 12:45:36 +00:00
http.on("/command", handleWebServerCommand);
Initial commit
2021-05-09 18:45:59 +00:00
#ifdef AMPEL_CSV
new version 0_2_2 from stuttgart
2021-11-15 12:45:36 +00:00
http.on(csv_writer::filename, handleWebServerCSV); //NOTE: csv_writer should have been initialized first.
Initial commit
2021-05-09 18:45:59 +00:00
http.on("/delete_csv", HTTP_POST, handleDeleteCSV);
#endif
http.onNotFound(handlePageNotFound);
http.begin();
Serial.print(F("You can access this sensor via http://"));
new version 0_2_2 from stuttgart
2021-11-15 12:45:36 +00:00
Serial.print(ampel.sensorId);
Initial commit
2021-05-09 18:45:59 +00:00
Serial.print(F(".local (might be unstable) or http://"));
Serial.println(WiFi.localIP());
}
// Allow access if http_user or http_password are empty, or if provided credentials match
bool shouldBeAllowed() {
return strcmp(config::http_user, "") == 0 || strcmp(config::http_password, "") == 0
|| http.authenticate(config::http_user, config::http_password);
}
void handleWebServerRoot() {
if (!shouldBeAllowed()) {
return http.requestAuthentication(DIGEST_AUTH);
}
unsigned long ss = seconds();
uint8_t dd = ss / 86400;
ss -= dd * 86400;
unsigned int hh = ss / 3600;
ss -= hh * 3600;
uint8_t mm = ss / 60;
ss -= mm * 60;
//NOTE: Splitting in multiple parts in order to use less RAM
char content[2000]; // Update if needed
new version 0_2_2 from stuttgart
2021-11-15 12:45:36 +00:00
// INFO - Header size : 1767 - Body size : 1991 - Script size : 1909
Initial commit
2021-05-09 18:45:59 +00:00
new version 0_2_2 from stuttgart
2021-11-15 12:45:36 +00:00
snprintf_P(content, sizeof(content), header_template, sensor::co2, ampel.sensorId, wifi::local_ip
Initial commit
2021-05-09 18:45:59 +00:00
#ifdef AMPEL_CSV
new version 0_2_2 from stuttgart
2021-11-15 12:45:36 +00:00
, csv_writer::filename
Initial commit
2021-05-09 18:45:59 +00:00
#endif
);
new version 0_2_2 from stuttgart
2021-11-15 12:45:36 +00:00
// Serial.print(F("INFO - Header size : "));
// Serial.print(strlen(content));
Initial commit
2021-05-09 18:45:59 +00:00
http.setContentLength(CONTENT_LENGTH_UNKNOWN);
http.send_P(200, PSTR("text/html"), content);
// Body
new version 0_2_2 from stuttgart
2021-11-15 12:45:36 +00:00
snprintf_P(content, sizeof(content), body_template, ampel.sensorId, sensor::co2, sensor::temperature,
sensor::humidity, sensor::timestamp, config::measurement_timestep,
Initial commit
2021-05-09 18:45:59 +00:00
#ifdef AMPEL_CSV
new version 0_2_2 from stuttgart
2021-11-15 12:45:36 +00:00
csv_writer::last_successful_write, config::csv_interval, csv_writer::getAvailableSpace() / 1024,
Initial commit
2021-05-09 18:45:59 +00:00
#endif
#ifdef AMPEL_MQTT
new version 0_2_2 from stuttgart
2021-11-15 12:45:36 +00:00
mqtt::connected ? "Yes" : "No", mqtt::last_successful_publish, config::mqtt_sending_interval,
Initial commit
2021-05-09 18:45:59 +00:00
#endif
#if defined(AMPEL_LORAWAN) && defined(ESP32)
new version 0_2_2 from stuttgart
2021-11-15 12:45:36 +00:00
lorawan::connected ? "Yes" : "No", LMIC_FREQUENCY_PLAN, lorawan::last_transmission,
Initial commit
2021-05-09 18:45:59 +00:00
config::lorawan_sending_interval,
#endif
new version 0_2_2 from stuttgart
2021-11-15 12:45:36 +00:00
config::temperature_offset, config::auto_calibrate_sensor ? "Yes" : "No", ampel.sensorId, ampel.sensorId,
wifi::local_ip, wifi::local_ip, ampel.macAddress, ESP.getFreeHeap(), esp_get_max_free_block_size(),
ampel.max_loop_duration, ampel.board, ampel.version, dd, hh, mm, ss);
Initial commit
2021-05-09 18:45:59 +00:00
new version 0_2_2 from stuttgart
2021-11-15 12:45:36 +00:00
// Serial.print(F(" - Body size : "));
// Serial.print(strlen(content));
Initial commit
2021-05-09 18:45:59 +00:00
http.sendContent(content);
// Script
snprintf_P(content, sizeof(content), script_template
#ifdef AMPEL_CSV
new version 0_2_2 from stuttgart
2021-11-15 12:45:36 +00:00
, csv_writer::filename, ampel.sensorId
Initial commit
2021-05-09 18:45:59 +00:00
#endif
);
new version 0_2_2 from stuttgart
2021-11-15 12:45:36 +00:00
// Serial.print(F(" - Script size : "));
// Serial.println(strlen(content));
Initial commit
2021-05-09 18:45:59 +00:00
http.sendContent(content);
}
#ifdef AMPEL_CSV
void handleWebServerCSV() {
if (!shouldBeAllowed()) {
return http.requestAuthentication(DIGEST_AUTH);
}
if (FS_LIB.exists(csv_writer::filename)) {
fs::File csv_file = FS_LIB.open(csv_writer::filename, "r");
new version 0_2_2 from stuttgart
2021-11-15 12:45:36 +00:00
char csv_size[10];
snprintf(csv_size, sizeof(csv_size), "%d", csv_file.size());
http.sendHeader("Content-Length", csv_size);
Initial commit
2021-05-09 18:45:59 +00:00
http.streamFile(csv_file, F("text/csv"));
csv_file.close();
} else {
http.send(204, F("text/html"), F("No data available."));
}
}
void handleDeleteCSV() {
if (!shouldBeAllowed()) {
return http.requestAuthentication(DIGEST_AUTH);
}
new version 0_2_2 from stuttgart
2021-11-15 12:45:36 +00:00
Serial.print(F("Removing CSV file..."));
Initial commit
2021-05-09 18:45:59 +00:00
FS_LIB.remove(csv_writer::filename);
new version 0_2_2 from stuttgart
2021-11-15 12:45:36 +00:00
Serial.println(F(" Done!"));
Initial commit
2021-05-09 18:45:59 +00:00
http.sendHeader("Location", "/");
http.send(303);
}
#endif
new version 0_2_2 from stuttgart
2021-11-15 12:45:36 +00:00
void handleWebServerCommand() {
if (!shouldBeAllowed()) {
return http.requestAuthentication(DIGEST_AUTH);
}
http.sendHeader("Location", "/");
http.send(303);
sensor_console::execute(http.arg("send").c_str());
}
Initial commit
2021-05-09 18:45:59 +00:00
void handlePageNotFound() {
http.send(404, F("text/plain"), F("404: Not found"));
}
}
Reference in a new issue Copy permalink