Mauricio Donatti
/
DCM_Heaters_8CH_v2
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Dependencies: mbed mbed-rtos AMC7812B EthernetInterface TextLCD
Diff: HTTP_SERVER.cpp
- Revision:
- 2:7a49ed074968
- Child:
- 3:820e3a42c06b
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/HTTP_SERVER.cpp Mon Apr 26 11:22:48 2021 +0000
@@ -0,0 +1,233 @@
+#include "HTTP_SERVER.h"
+
+#ifndef DEBUG
+//#define DEBUG
+#endif
+
+//HTML file - with Javascript
+const char *index_html = "<html><head><title>DCM Heaters Driver</title><link rel=\"shortcut icon\" type=\"image/x-icon\" href=\"http://cnpem.br/wp-content/uploads/2018/01/LNLS_Sirius-02-293x300.png\" />\n\
+<script src=\"https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js\"></script></head>\n\
+<script language=\"javascript\" type=\"text/javascript\">\n\
+function loop(){\n\
+$.post(\"read_data\", function(data){\n\
+if(data.length >0)\n\
+{\n\
+var str = data;\n\
+var res = str.split(\" \");\n\
+if(res.length == 97){\n\
+var table = '<div id=\"data_table\">'+\n\
+'<table width=\"100%\" border=\"1\" cellpadding=\"3\" cellspacing=\"1\" bgcolor=\"#E3EBFB\">'+\n\
+'<tr align=\"center\" valign=\"middle\">'+\n\
+'<td width=\"50\" height=\"40\"><strong>Channel</font></strong></td>'+\n\
+'<td width=\"96\" height=\"40\"><strong>Voltage (V)</font></strong></td>'+\n\
+'<td width=\"96\" height=\"40\"><strong>Current (A)</font></strong></td>'+\n\
+'<td width=\"96\" height=\"40\"><strong>Duty Cycle PWM (%)</font></strong></td>'+\n\
+'<td width=\"96\" height=\"40\"><strong>Current Limit (A)</font></strong></td>'+\n\
+'<td width=\"96\" height=\"40\"><strong>Failure</font></strong></td>'+\n\
+'<td width=\"96\" height=\"40\"><strong>Overload</font></strong></td>'+\n\
+'<td width=\"96\" height=\"40\"><strong>No Load</font></strong></td>'+\n\
+'<td width=\"96\" height=\"40\"><strong>Enable</font></strong></td></tr>';\n\
+for(var i=0;i<8;i++){\n\
+table = table + '<tr align=\"center\" valign=\"middle\">'+\n\
+'<td width=\"50\" height=\"31\"bgcolor=\"#FFFFFF\"><span style=\"font-weight:bold;\">'+(i+1)+'</span></td>'+\n\
+'<td width=\"96\" height=\"28\"bgcolor=\"#FFFFFF\"><span style=\"font-weight:bold;\">'+res[i*12]+'</span></td>'+\n\
+'<td width=\"96\" height=\"28\"bgcolor=\"#FFFFFF\"><span style=\"font-weight:bold;\">'+res[i*12+1]+'</span></td>'+\n\
+'<td width=\"96\" height=\"28\"bgcolor=\"#FFFFFF\"><span style=\"font-weight:bold;\">'+res[i*12+2]+'</span></td>'+\n\
+'<td width=\"96\" height=\"28\"bgcolor=\"#FFFFFF\"><span style=\"font-weight:bold;\">'+res[i*12+3]+'</span></td>'+\n\
+'<td width=\"96\" height=\"28\"bgcolor=\"'+res[i*12+4]+'\"><span style=\"font-weight:bold;\">'+res[i*12+5]+'</span></td>'+\n\
+'<td width=\"96\" height=\"28\"bgcolor=\"'+res[i*12+6]+'\"><span style=\"font-weight:bold;\">'+res[i*12+7]+'</span></td>'+\n\
+'<td width=\"96\" height=\"28\"bgcolor=\"'+res[i*12+8]+'\"><span style=\"font-weight:bold;\">'+res[i*12+9]+'</span></td>'+\n\
+'<td width=\"96\" height=\"28\"bgcolor=\"'+res[i*12+10]+'\"><span style=\"font-weight:bold;\">'+res[i*12+11]+'</span></td>'+\n\
+'</tr>';\n\
+}\n\
+table = table + '</table></div>';\n\
+document.getElementById(\"data_table\").innerHTML = table;\n\
+}}\n\
+});\n\
+setTimeout(function(){ loop() }, 2000);\n\
+}\n\
+</script>\n\
+<body onLoad=\"loop()\">\n\
+<table width=\"100%\"border=\"0\" cellspacing=\"0\" cellpadding=\"0\" style=\"font-weight:normal;\">\n\
+<tr>\n\
+<td width=\"25%\" height=\"142\" align=\"center\" valign=\"middle\" style=\"border-bottom: #000000 solid 1px;\">\n\
+<a href=\"http://www.lnls.cnpem.br/\"><img src=\"http://lnls.cnpem.br/wp-content/themes/lnls-v2/assets/images/logo-header.svg\" alt=\"LNLS\" width=\"305\" height=\"142\" /></a></td>\n\
+<td colspan=\"5\" height=\"142\" align=\"center\" scope=\"col\" style=\"border-bottom: #000000 solid 1px;\"><p><span class=\"style7\">DCM HEATERS DRIVER<br /><br/>\n\
+<strong>DIAGNOSTICS<br/></strong></span></p>\n\
+<p><span class=\"style7\"><strong><em> <a href=\"http://www.lnls.cnpem.br\">LNLS</a></em></strong></span></p></td>\n\
+<td width=\"25%\" height=\"142\" align=\"center\" style=\"border-bottom: #000000 solid 1px;\">\n\
+<a href=\"http://www.lnls.cnpem.br/grupos/gae/\"><img src=\"http://www.gae.agency/wp-content/uploads/2016/03/Logo_gae_hp_blue.png\" alt=\"GAE\" width=\"305\" height=\"99\" /></a></td>\n\
+</tr>\n\
+</table>\n<div id=\"data_table\"></div></body></html>\0";
+
+//table colors vector
+const char *color[] = {"#C8FFC8\0","#FF0000\0"};
+
+int index_html_len; //index with html length
+
+char buffer[MAX_BUFFER_SIZE]; //receive and transmit buffer
+char tmp_buffer[200]; //aux buffer
+int status_code; //http status code
+char reason_phrase[30]; //http reason phrase
+
+char httpmethod[20]; //http method
+char filepath[20]; //file requested
+char http_ver[20]; //http version
+
+int idx_buffer; //index buffer
+
+//Debug functions
+namespace HTTP_SERVER
+{
+void DEBUG_PRINT_LINE(const char* arg_line)
+{
+#ifdef DEBUG
+ printf("(HTTP_SERVER) ")
+ printf(arg_line);
+ printf("\r\n");
+#endif
+}
+template<typename T>
+void DEBUG_PRINT_LINE(const char* arg_line, T arg_t)
+{
+#ifdef DEBUG
+ printf("(HTTP_SERVER) ");
+ printf(arg_line, arg_t);
+ printf("\r\n");
+#endif
+}
+template<typename T1, typename T2>
+void DEBUG_PRINT_LINE(const char* arg_line, T1 arg_t1, T2 arg_t2)
+{
+#ifdef DEBUG
+ printf("(HTTP_SERVER) ");
+ printf(arg_line, arg_t1, arg_t2);
+ printf("\r\n");
+#endif
+}
+}
+using namespace HTTP_SERVER;
+
+HttpServer::HttpServer()
+{
+ buffer[0] = '\0'; //constructor
+}
+
+HttpServer::~HttpServer()
+{
+}
+bool HttpServer::init()
+{
+ // TCP Socket setup
+ // To open Server-side PORT
+ if(tcpsvr.bind(TCP_PORT)< 0) {
+ return false;
+ }
+ tcpsvr.set_blocking(true,1500); //set blocking socket
+
+ // Server start listening Request from a web browser.
+
+ if(tcpsvr.listen(5) < 0) {
+ return false;
+ }
+
+ index_html_len = strlen(index_html); //calculate string length
+
+ return true;
+}
+
+bool HttpServer::run(channel *CH)
+{
+ if(tcpsvr.accept(tcpcon) < 0) {
+ //printf("(HTTP_SERVER) failed to accept connection.\r\n");
+ return -1;
+ }
+ // When conected
+ while(tcpcon.is_connected())
+ {
+ tcpcon.set_blocking(false,100);
+ //
+ // Request Analysis
+ //
+
+ DEBUG_PRINT_LINE("DEBUG MODE");
+ switch(tcpcon.receive(buffer, 1023)) {
+ case 0:
+ //DEBUG_PRINT_LINE("received buffer is empty.");
+ status_code = 400;
+ sprintf(reason_phrase,"No Request\0");
+ httpmethod[0] = '\0';
+ filepath[0] = '\0';
+ http_ver[0] = '\0';
+ break;
+ case -1:
+ DEBUG_PRINT_LINE("failed to read data from client.");
+ status_code = 500;
+ sprintf(reason_phrase,"Internal Server Error\0");
+ httpmethod[0] = '\0';
+ filepath[0] = '\0';
+ http_ver[0] = '\0';
+ break;
+ default:
+ DEBUG_PRINT_LINE("Received Data: %d",strlen(buffer));
+ DEBUG_PRINT_LINE("-->\r\n");
+ DEBUG_PRINT_LINE("%.*s[End of Request]",strlen(buffer),buffer);
+ // get HTTP method, File path, HTTP version
+ sprintf(httpmethod,strtok(buffer," "));
+ filepath[0] = '\0';
+ sprintf(http_ver,"HTTP/1.1\0");
+ DEBUG_PRINT_LINE("httpmethod: %s", httpmethod);
+ DEBUG_PRINT_LINE("file path: %s", filepath);
+ DEBUG_PRINT_LINE("http ver : %s", http_ver);
+ break;
+ }
+
+ if (httpmethod[0] == '\0') {
+ buffer[MAX_BUFFER_SIZE - 1] = '\0';
+ sprintf(buffer,"%s %d %s\r\nConnection: Close\r\n\r\n\0", http_ver, status_code, reason_phrase);
+ DEBUG_PRINT_LINE("echo back done.");
+ break;
+ }
+
+ // Response
+ if (strcmp(httpmethod,"GET") == 0 ) //GET request - always index.html stoed in index_html
+ {
+ DEBUG_PRINT_LINE("GET request incomming.");
+
+ buffer[MAX_BUFFER_SIZE-1] = '\0';
+ status_code = 200;
+ sprintf(reason_phrase,"OK\0");
+
+ sprintf(buffer,"%s %d %s\r\nConnection: Close\r\nContent-Type: text/html\r\nKeep-Alive: timeout=15\r\n\r\n\0", http_ver, status_code, reason_phrase);
+ tcpcon.send_all(buffer,strlen(buffer));
+ tcpcon.send_all((char*)index_html,index_html_len);
+
+ break;
+ }
+ if (strcmp(httpmethod,"POST") == 0 ) //POST request - javascript request
+ {
+ DEBUG_PRINT_LINE("POST request incomming.");
+ status_code = 200;
+ sprintf(reason_phrase,"OK\0");
+
+ sprintf(buffer,"%s %d %s\r\nConnection: Close\r\n\r\n\0", http_ver, status_code, reason_phrase);
+
+ for(idx_buffer=0;idx_buffer<=7;idx_buffer++)
+ {
+ sprintf(tmp_buffer,"%4.2f %3.2f %d %3.2f %s %d %s %d %s %d %s %d \0",CH[idx_buffer].voltage,CH[idx_buffer].current,CH[idx_buffer].control,CH[idx_buffer].limit,\
+ color[CH[idx_buffer].failure>0],CH[idx_buffer].failure,\
+ color[CH[idx_buffer].overload>ERROR_REP],CH[idx_buffer].overload>ERROR_REP,\
+ color[CH[idx_buffer].noload>ERROR_REP],CH[idx_buffer].noload>ERROR_REP,\
+ color[CH[idx_buffer].enable==0],CH[idx_buffer].enable);
+ strcat(buffer,tmp_buffer);
+
+ }
+ tcpcon.send_all(buffer,strlen(buffer));
+ break;
+
+
+ }
+ }
+ tcpcon.close(); //always close the connection
+ return 0;
+}
\ No newline at end of file