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:
- 3:1f2938317c31
- Parent:
- 2:3a84959399d3
- Child:
- 4:6d1627cfb314
--- a/main.cpp Thu Jul 30 04:25:13 2015 +0000
+++ b/main.cpp Wed Aug 26 00:44:40 2015 +0000
@@ -6,35 +6,35 @@
#define SECURE WizFi250::SEC_AUTO
-#define SSID "ssid"
-#define PASS "key"
+#define SSID "wizms1"
+#define PASS "maker0701"
#if defined(TARGET_WIZwiki_W7500)
- #define SDA PA_10
- #define SCL PA_9
+// #define SDA PA_10
+// #define SCL PA_9
WizFi250Interface wizfi250(D1,D0,D7,D8,PA_12,NC,115200);
Serial pc(USBTX,USBRX);
#endif
// an SPI sub-class that provides a constructed default
-class I2CPreInit : public I2C
-{
-public:
- I2CPreInit(PinName sda, PinName scl) : I2C(sda, scl)
- {
- frequency(100000);
- start();
- };
-};
+//class I2CPreInit : public I2C
+//{
+//public:
+// I2CPreInit(PinName sda, PinName scl) : I2C(sda, scl)
+// {
+// frequency(100000);
+// start();
+// };
+//};
-I2CPreInit gI2C(SDA,SCL);
-Adafruit_SSD1306_I2c gOled(gI2C,NC,0x78,64,128);
+//I2CPreInit gI2C(SDA,SCL);
+//Adafruit_SSD1306_I2c gOled(gI2C,NC,0x78,64,128);
NTPClient ntpClient;
HTTPClient httpClient;
void parse(char buffer[], int *j, char *string); //FUNCTION TO PARSE HTTP GET DATA
-char httpGetData[200]; //BUFFER TO HOLD DATA FROM HTTP GET REQUEST
+char httpGetData[1024]; //BUFFER TO HOLD DATA FROM HTTP GET REQUEST
int main()
@@ -53,8 +53,8 @@
int j=0, returnCode;
pc.baud(115200);
- gOled.begin();
- gOled.clearDisplay();
+// gOled.begin();
+// gOled.clearDisplay();
wizfi250.init();
returnCode = wizfi250.connect(SECURE, SSID, PASS);
@@ -90,12 +90,14 @@
parse(httpGetData,&j,latitude);
parse(httpGetData,&j,longitude);
parse(httpGetData,&j,timeZone);
- gOled.printf("HTTP Data Received\r\n");
- gOled.display();
+ //gOled.printf("HTTP Data Received\r\n");
+ //gOled.display();
+ printf("HTTP Data Received\r\n");
}
else { //HTTP GET REQUEST ERRORED
- gOled.printf("HTTP Error %d\r\n", r);
- gOled.display();
+// gOled.printf("HTTP Error %d\r\n", r);
+// gOled.display();
+ printf("HTTP Error %d\r\n", r);
return -1;
}
printf("Reading Time...\r\n");
@@ -111,9 +113,13 @@
wait(3.0);
char buffer[80]; //BUFFER TO HOLD FORMATTED TIME DATA
- 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
+// 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
+ printf("%s, %s %s, %s\r\n",city,stateAbrv,zip,countryAbrv); //PRINT CITY STATE AND ZIP INFORMATION AND COUNTRY
+ printf("LAT:%s\r\nLONG:%s\r\n",latitude,longitude); //PRINT LATITUDE AND LONGITUDE
+ printf("Timezone:%s\r\n",timeZone); //PRINT TIMEZONE
+
wizfi250.disconnect(); //DISCONNECT FROM THE NETWORK
while (1) {
@@ -121,9 +127,10 @@
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));
- gOled.printf("Univ Time Clock\r\n%s\r\n", buffer);
- gOled.display();
- gOled.setTextCursor(0,40);
+// gOled.printf("Univ Time Clock\r\n%s\r\n", buffer);
+// gOled.display();
+// gOled.setTextCursor(0,40);
+ printf("Univ Time Clock\r\n%s\r\n", buffer);
wait(1);
}
}