malcolm lear
University of Essex CE713
Dependencies: mbed HTTPServer EthernetNetIf TextLCD
Fork of
HTTPServerHelloWorld
by 
Robert Gutknecht
Diff: main.cpp
- Revision:
- 7:7f4d940077bd
- Parent:
- 6:7929de136a42
- Child:
- 8:b6a76cc9c872
--- a/main.cpp Thu Nov 30 15:30:41 2017 +0000
+++ b/main.cpp Thu Nov 30 15:51:11 2017 +0000
@@ -16,17 +16,17 @@
DigitalIn In2(p12); // "
DigitalIn In3(p11); // "
I2C i2c(p9, p10); // I2C: SDA, SCL pins
-PwmOut servo1(p21); // Servo 1 PWM pin
-PwmOut servo2(p22); // Servo 2 PWM pin
-DigitalOut Trigger(p28); // Ultrasonic rangefinder trigger pin
-DigitalIn Echo(p27); // Ultrasonic rangefinder echo pin
-Timer Sonar; // Ultrasonic timer
-DigitalOut led1(LED1); //
-Serial out(USBTX, USBRX); //
-LocalFileSystem fs("webfs"); //
+PwmOut servo1(p21); // servo 1 PWM pin
+PwmOut servo2(p22); // servo 2 PWM pin
+DigitalOut Trigger(p28); // ultrasonic rangefinder trigger pin
+DigitalIn Echo(p27); // ultrasonic rangefinder echo pin
+Timer Sonar; // ultrasonic timer
+DigitalOut led1(LED1); // web server stay alive indication
+Serial out(USBTX, USBRX); // used for wev server
+LocalFileSystem fs("webfs"); // web server local file system
EthernetNetIf eth; //
HTTPServer svr; //
-Ticker WebUpdate; // Interrupt timer to update web page
+Ticker WebUpdate; // interrupt timer to service web page requests
// global variables
short LEDbits = 0; // global led status used for readback
@@ -40,8 +40,8 @@
extern "C" void mbed_mac_address(char *mac); //
void WebServerPoll () {
- Net::poll();
- led1=!led1; //Show that we are alive
+ Net::poll(); // bump web server into action
+ led1=!led1; // show that we are alive
}
int InitWebServer() {
@@ -49,24 +49,24 @@
if(ethErr) {
return -1;
}
- FILE *fp = fopen("/webfs/index.htm", "w"); // Open "out.txt" on the local file system for writing
+ FILE *fp = fopen("/webfs/index.htm", "w"); // open "out.txt" on the local file system for writing
fprintf(fp, "<html><head><title>Hello World online</title></head><body><h1>Hello World from Mbed NXP LPC1768!</h1></body></html>");
- fclose(fp); // Close file
- FSHandler::mount("/webfs", "/files"); // Mount /webfs path on /files web path
- FSHandler::mount("/webfs", "/"); // Mount /webfs path on web root path
+ fclose(fp); // close file
+ FSHandler::mount("/webfs", "/files"); // mount /webfs path on /files web path
+ FSHandler::mount("/webfs", "/"); // mount /webfs path on web root path
svr.addHandler<SimpleHandler>("/hello");
svr.addHandler<RPCHandler>("/rpc");
svr.addHandler<FSHandler>("/files");
- svr.addHandler<FSHandler>("/"); // Default handler
- svr.bind(80); // Example : http://155.245.21.144
+ svr.addHandler<FSHandler>("/"); // default handler
+ svr.bind(80); // example : http://155.245.21.144
WebUpdate.attach(&WebServerPoll, 0.1); // update webserver every 100ms
return 0; // return without error
}
void HTTPText(char t[100]) {
- FILE *fp = fopen("/webfs/index.htm", "w"); // Open "out.txt" on the local file system for writing
- fprintf(fp, t);
- fclose(fp);
+ FILE *fp = fopen("/webfs/index.htm", "w"); // open "index.htm" on the local file system for writing
+ fprintf(fp, t); // print to file
+ fclose(fp); // close file
}
void Servo1(float s) { // range +-1
@@ -84,8 +84,8 @@
}
void InitServos() {
- servo1.period(0.02);
- servo2.period(0.02);
+ servo1.period(0.02); //
+ servo2.period(0.02); //
Servo1(0); // initiate servo 1 to centre position
Servo2(0); // initiate servo 1 to centre position
}
@@ -314,7 +314,7 @@
for(int i=0; i<6;i++) { // step through MAC address characters
lcd.printf("%02X ", mac[i]); // print MAC address
}
- printf("\n");
+ printf("\n"); //
wait(.4); // wait 0.4 second
if (spos < 1) { // is servo at upper limit of 1
spos += .1; // increment servo position