Diff: Internet_LCD_Clock.cpp

Revision:

0:da7f4b6d2b7c

Child:

1:ebe96d5a5825

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Internet_LCD_Clock.cpp	Fri May 25 00:41:26 2012 +0000
@@ -0,0 +1,50 @@
+#include "mbed.h"
+#include "EthernetNetIf.h"
+#include "NTPClient.h"
+#include "NokiaLCD.h"
+// Internet of Things clock example: LCD time is set via internet NTP time server
+EthernetNetIf eth;
+NTPClient ntp;
+NokiaLCD lcd(p5, p7, p8, p9, NokiaLCD::LCD6610); // mosi, sclk, cs, rst, type
+
+int main() {
+//system time structure
+    time_t ctTime;
+    char *time_str;
+    //clear LCD
+    lcd.cls();
+    lcd.locate(0,2);
+    // lcd.printf prints to LCD display;
+    lcd.printf("Get IP addr...");
+    EthernetErr ethErr = eth.setup();
+    //Get an Internet IP address using DHCP
+    if (ethErr) {
+        //error or timeout getting an IP address
+        lcd.cls();
+        lcd.locate(0,2);
+        lcd.printf("Net Error %d",ethErr);
+        return -1;
+    }
+    lcd.locate(0,3);
+    lcd.printf("Reading Time...");
+    //specify time server URL
+    Host server(IpAddr(), 123, "0.uk.pool.ntp.org");
+    //Read time from server
+    ntp.setTime(server);
+    lcd.locate(0,4);
+    lcd.printf("Time set");
+    //Delay for human time to read LCD display
+    wait(1);
+    while (1) {
+        // loop and periodically update the LCD's time display
+        lcd.cls();
+        ctTime = time(NULL);
+        lcd.locate(0,1);
+        lcd.printf("UTC:");
+        lcd.locate(0,3);
+        time_str = ctime(&ctTime);
+        time_str[strlen(time_str)-1] = 0;
+        lcd.printf("%s", time_str);
+        wait(1);
+    }
+}