Clock display on app board LCD is set using an NTP network time server. DHCP service must be enabled for mbed to get an IP address. A network cable is needed.
Dependencies: C12832_lcd EthernetInterface NTPClient mbed-rtos mbed
main.cpp
- Committer:
- 4180_1
- Date:
- 2013-10-01
- Revision:
- 0:9653261dbcda
- Child:
- 1:9095ffb76813
File content as of revision 0:9653261dbcda:
#include "mbed.h" #include "EthernetInterface.h" #include "NTPClient.h" #include "C12832_lcd.h" C12832_LCD lcd; //Graphics LCD EthernetInterface eth; NTPClient ntp; int main() { eth.init(); //Use DHCP wait(2); lcd.cls(); lcd.printf("Getting IP Address\r\n"); if(eth.connect(60000)!=0) { lcd.printf("DHCP error - No IP"); wait(10); } else { lcd.printf("IP is %s\n", eth.getIPAddress()); wait(2); } lcd.cls(); lcd.printf("Trying to update time...\r\n"); if (ntp.setTime("ca.pool.ntp.org") == 0) { lcd.printf("Set time successfully\r\n"); while(1) { lcd.cls(); lcd.locate(0,0); time_t ctTime; ctTime = time(NULL); lcd.printf("%s\r\n", ctime(&ctTime)); lcd.printf("Current Time (UTC)"); wait(1); } } else { lcd.printf("NTP Error\r\n"); } eth.disconnect(); while(1) { } }