WIZnet
Geolocation and NTP Example for WizFi250 on WIZwiki-W7500
Dependencies: Adafruit_GFX HTTPClient NTPClient WizFi250Interface mbed
System Diagram
I want to make a watch, that can check my location and time. So I decide to make this watch using Wi-Fi module(WizFi250) and Cortex-M0 MCU(WIZwiki-W7500). For getting geolocation of this watch, I used ip-api.com which geolocation server and I used NTP server for getting current time. This picture is system diagram of my project.
Materials
WIZwiki-W7500 ( MCU )
WizFi250-EVB ( Wi-Fi Module )
Sensor Shield
SSD1306 OLED
Refer to this URL.
https://developer.mbed.org/components/Adafruit-OLED-128x32/
Hardware Configuration
UART0 RX/TX/CTS/RTS pins of WIZwiki-W7500 board are used to control WizFi250 which Wi-Fi module and It use I2C SDA/SCL pins for using SSD1306 OLED.
Demo Video
For more detailed information, refer to this URL.
Diff: main.cpp
- Revision:
- 1:741b858c0b92
- Parent:
- 0:bc0fe324d7e2
- Child:
- 2:3a84959399d3
--- a/main.cpp Thu Jun 25 05:20:13 2015 +0000
+++ b/main.cpp Fri Jun 26 11:04:33 2015 +0000
@@ -11,10 +11,10 @@
#if defined(TARGET_WIZwiki_W7500)
-#define SDA PA_10
-#define SCL PA_9
-WizFi250Interface wizfi250(D1,D0,D7,D8,PA_12,NC,115200);
-
+ #define SDA PA_10
+ #define SCL PA_9
+ WizFi250Interface wizfi250(D1,D0,D7,D8,PA_12,NC,115200);
+ Serial pc(USBTX,USBRX);
#endif
@@ -39,9 +39,6 @@
int main()
{
- S_UART_Init(115200);
-
-
time_t ctTime; //system time structure
char success[10]={0}; //success first
char countryFull[20]={0}; //Full Country Name
@@ -55,6 +52,10 @@
char timeZone[30]={0}; //timeZone
int j=0, returnCode;
+ pc.baud(115200);
+ gOled.begin();
+ gOled.clearDisplay();
+
wizfi250.init();
returnCode = wizfi250.connect(SECURE, SSID, PASS);
@@ -89,13 +90,12 @@
parse(httpGetData,&j,latitude);
parse(httpGetData,&j,longitude);
parse(httpGetData,&j,timeZone);
- printf("GEOLOCATION DATA RECIEVED\r\n");
- printf("success : %s, countryFull : %s, countryAbrv : %s, stateAbrv : %s\r\n",success, countryFull, countryAbrv, stateAbrv);
- printf("stateFull : %s, city : %s, zip : %s, latitude : %s\r\n",stateFull, city, zip, latitude);
- printf("longitude : %s, timeZone : %s\r\n",longitude, timeZone);
+ gOled.printf("HTTP Data Received\r\n");
+ gOled.display();
}
else { //HTTP GET REQUEST ERRORED
- printf("HTTP Error %d\r\n", r);
+ gOled.printf("HTTP Error %d\r\n", r);
+ gOled.display();
return -1;
}
printf("Reading Time...\r\n");
@@ -111,9 +111,9 @@
wait(3.0);
char buffer[80]; //BUFFER TO HOLD FORMATTED TIME DATA
- printf("%s, %s %s\r\n",city,stateAbrv,zip); //PRINT CITY STATE AND ZIP INFORMATION
- printf("%s\r\nLAT:%s\r\nLONG:%s\r\n",countryAbrv,latitude,longitude); //PRINT COUNTRY and LATITUDE AND LONGITUDE
- printf("Timezone:\r\n%s\r\n",timeZone); //PRINT TIMEZONE
+ gOled.printf("%s, %s %s, %s\r\n",city,stateAbrv,zip,countryAbrv); //PRINT CITY STATE AND ZIP INFORMATION AND COUNTRY
+ gOled.printf("LAT:%s\r\nLONG:%s\r\n",latitude,longitude); //PRINT LATITUDE AND LONGITUDE
+ gOled.printf("Timezone:%s\r\n",timeZone); //PRINT TIMEZONE
wizfi250.disconnect(); //DISCONNECT FROM THE NETWORK
while (1) {
@@ -121,7 +121,9 @@
ctTime = time(NULL)+(3600*9); //TIME with offset for eastern time KR
//FORMAT TIME FOR DISPLAY AND STORE FORMATTED RESULT IN BUFFER
strftime(buffer,80,"%a %b %d\r\n%T %p %z\r\n %Z\r\n",localtime(&ctTime));
- printf("Univ Time Clock\r\n%s\r\n", buffer);
+ gOled.printf("Univ Time Clock\r\n%s\r\n", buffer);
+ gOled.display();
+ gOled.setTextCursor(0,40);
wait(1);
}
}