WIZnet / Mbed 2 deprecated WizFi250-Geolocation_NTP

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.

https://c1.staticflickr.com/1/535/18550462294_5055005f04_c.jpg

Materials

WIZwiki-W7500 ( MCU )

https://c4.staticflickr.com/4/3925/19135560186_bd20acc860_z.jpg

WizFi250-EVB ( Wi-Fi Module )

https://c1.staticflickr.com/1/331/18975741359_366b5494b7_n.jpg

Sensor Shield

https://c4.staticflickr.com/4/3692/18974815038_9fda4569f1_n.jpg

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.

https://c4.staticflickr.com/4/3913/19010999888_3b30c685dd_c.jpg

/media/uploads/kaizen/20150731_084716.png

Demo Video

For more detailed information, refer to this URL.

http://www.life4iot.com/2015/07/08/wizfi250-geolocation-and-ntp-example-on-wizwiki-w7500-of-mbed-platform/?lang=en

main.cpp@4:6d1627cfb314, 2015-10-21 (annotated)

Committer:
kaizen
Date:
Wed Oct 21 05:54:18 2015 +0000
Revision:
4:6d1627cfb314
Parent:
3:1f2938317c31 
Delete OLED Code

Who changed what in which revision?

UserRevisionLine numberNew contents of line
kaizen 0:bc0fe324d7e2 1 #include "mbed.h"
kaizen 0:bc0fe324d7e2 2 #include "Adafruit_SSD1306.h"
kaizen 0:bc0fe324d7e2 3 #include "WizFi250Interface.h"
kaizen 0:bc0fe324d7e2 4 #include "NTPClient.h"
kaizen 0:bc0fe324d7e2 5 #include "HTTPClient.h"
kaizen 0:bc0fe324d7e2 6
kaizen 0:bc0fe324d7e2 7
kaizen 0:bc0fe324d7e2 8 #define SECURE WizFi250::SEC_AUTO
kaizen 4:6d1627cfb314 9 #define SSID "DIR-815_Wiznet"
kaizen 4:6d1627cfb314 10 #define PASS "12345678"
kaizen 0:bc0fe324d7e2 11
kaizen 0:bc0fe324d7e2 12
kaizen 0:bc0fe324d7e2 13 #if defined(TARGET_WIZwiki_W7500)
kaizen 3:1f2938317c31 14 // #define SDA PA_10
kaizen 3:1f2938317c31 15 // #define SCL PA_9
kaizen 1:741b858c0b92 16 WizFi250Interface wizfi250(D1,D0,D7,D8,PA_12,NC,115200);
kaizen 1:741b858c0b92 17 Serial pc(USBTX,USBRX);
kaizen 0:bc0fe324d7e2 18 #endif
kaizen 0:bc0fe324d7e2 19
kaizen 0:bc0fe324d7e2 20
kaizen 0:bc0fe324d7e2 21 // an SPI sub-class that provides a constructed default
kaizen 3:1f2938317c31 22 //class I2CPreInit : public I2C
kaizen 3:1f2938317c31 23 //{
kaizen 3:1f2938317c31 24 //public:
kaizen 3:1f2938317c31 25 // I2CPreInit(PinName sda, PinName scl) : I2C(sda, scl)
kaizen 3:1f2938317c31 26 // {
kaizen 3:1f2938317c31 27 // frequency(100000);
kaizen 3:1f2938317c31 28 // start();
kaizen 3:1f2938317c31 29 // };
kaizen 3:1f2938317c31 30 //};
kaizen 0:bc0fe324d7e2 31
kaizen 3:1f2938317c31 32 //I2CPreInit gI2C(SDA,SCL);
kaizen 3:1f2938317c31 33 //Adafruit_SSD1306_I2c gOled(gI2C,NC,0x78,64,128);
kaizen 0:bc0fe324d7e2 34 NTPClient ntpClient;
kaizen 0:bc0fe324d7e2 35 HTTPClient httpClient;
kaizen 0:bc0fe324d7e2 36 void parse(char buffer[], int *j, char *string); //FUNCTION TO PARSE HTTP GET DATA
kaizen 3:1f2938317c31 37 char httpGetData[1024]; //BUFFER TO HOLD DATA FROM HTTP GET REQUEST
kaizen 0:bc0fe324d7e2 38
kaizen 0:bc0fe324d7e2 39
kaizen 0:bc0fe324d7e2 40 int main()
kaizen 0:bc0fe324d7e2 41 {
kaizen 0:bc0fe324d7e2 42 time_t ctTime; //system time structure
kaizen 0:bc0fe324d7e2 43 char success[10]={0}; //success first
kaizen 0:bc0fe324d7e2 44 char countryFull[20]={0}; //Full Country Name
kaizen 0:bc0fe324d7e2 45 char countryAbrv[5]={0}; //Abbreviated Country Name or country Code
kaizen 0:bc0fe324d7e2 46 char stateAbrv[5]={0}; //Abbreviated State or region code
kaizen 0:bc0fe324d7e2 47 char stateFull[15]={0}; //Full State Name
kaizen 0:bc0fe324d7e2 48 char city[15]={0}; //City Name
kaizen 0:bc0fe324d7e2 49 char zip[6]={0}; //ZIP CODE
kaizen 0:bc0fe324d7e2 50 char latitude[10]={0}; //latitude
kaizen 0:bc0fe324d7e2 51 char longitude[10]={0}; //longitude
kaizen 0:bc0fe324d7e2 52 char timeZone[30]={0}; //timeZone
kaizen 0:bc0fe324d7e2 53 int j=0, returnCode;
kaizen 0:bc0fe324d7e2 54
kaizen 1:741b858c0b92 55 pc.baud(115200);
kaizen 3:1f2938317c31 56 // gOled.begin();
kaizen 3:1f2938317c31 57 // gOled.clearDisplay();
kaizen 1:741b858c0b92 58
kaizen 0:bc0fe324d7e2 59 wizfi250.init();
kaizen 0:bc0fe324d7e2 60 returnCode = wizfi250.connect(SECURE, SSID, PASS);
kaizen 0:bc0fe324d7e2 61
kaizen 0:bc0fe324d7e2 62 if ( returnCode == 0 )
kaizen 0:bc0fe324d7e2 63 {
kaizen 0:bc0fe324d7e2 64 printf(" - WiFi Ready\r\n");
kaizen 0:bc0fe324d7e2 65 printf("IP Address is %s\r\n", wizfi250.getIPAddress());
kaizen 0:bc0fe324d7e2 66 }
kaizen 0:bc0fe324d7e2 67 else
kaizen 0:bc0fe324d7e2 68 {
kaizen 0:bc0fe324d7e2 69 printf(" - Could not initialize WiFi - ending\r\n");
kaizen 0:bc0fe324d7e2 70 return 0;
kaizen 0:bc0fe324d7e2 71 }
kaizen 0:bc0fe324d7e2 72
kaizen 0:bc0fe324d7e2 73 //HANDLES THE HTTP GET REQUEST THE WAY THE FUNCTION IS CALLED HERE IS THE FOLLOWING
kaizen 0:bc0fe324d7e2 74 // get(DOMAIN_NAME,BUFFER,TIMEOUT_VAL)
kaizen 0:bc0fe324d7e2 75 //DOMAIN_NAME= domain name that get request is sent to
kaizen 0:bc0fe324d7e2 76 //BUFFER= buffer to store data returned from the server
kaizen 0:bc0fe324d7e2 77 //TIMEOUT_VAL= Time before the request times out
kaizen 0:bc0fe324d7e2 78 HTTPResult r = httpClient.get("http://ip-api.com/csv",httpGetData,128); //GET GEOLOCATION DATA (CSV)
kaizen 0:bc0fe324d7e2 79
kaizen 0:bc0fe324d7e2 80 if (r==HTTP_OK) { //IF THE DATA WAS RECIEVED
kaizen 0:bc0fe324d7e2 81 j=0;
kaizen 0:bc0fe324d7e2 82 //parse and display each of the API's location information strings on the LCD
kaizen 0:bc0fe324d7e2 83 parse(httpGetData, &j, success);
kaizen 0:bc0fe324d7e2 84 parse(httpGetData,&j,countryFull);
kaizen 0:bc0fe324d7e2 85 parse(httpGetData,&j,countryAbrv);
kaizen 0:bc0fe324d7e2 86 parse(httpGetData,&j,stateAbrv);
kaizen 0:bc0fe324d7e2 87 parse(httpGetData,&j,stateFull);
kaizen 0:bc0fe324d7e2 88 parse(httpGetData,&j,city);
kaizen 0:bc0fe324d7e2 89 parse(httpGetData,&j,zip);
kaizen 0:bc0fe324d7e2 90 parse(httpGetData,&j,latitude);
kaizen 0:bc0fe324d7e2 91 parse(httpGetData,&j,longitude);
kaizen 0:bc0fe324d7e2 92 parse(httpGetData,&j,timeZone);
kaizen 4:6d1627cfb314 93 // gOled.printf("HTTP Data Received\r\n");
kaizen 4:6d1627cfb314 94 // gOled.display();
kaizen 3:1f2938317c31 95 printf("HTTP Data Received\r\n");
kaizen 0:bc0fe324d7e2 96 }
kaizen 0:bc0fe324d7e2 97 else { //HTTP GET REQUEST ERRORED
kaizen 3:1f2938317c31 98 // gOled.printf("HTTP Error %d\r\n", r);
kaizen 3:1f2938317c31 99 // gOled.display();
kaizen 3:1f2938317c31 100 printf("HTTP Error %d\r\n", r);
kaizen 0:bc0fe324d7e2 101 return -1;
kaizen 0:bc0fe324d7e2 102 }
kaizen 0:bc0fe324d7e2 103 printf("Reading Time...\r\n");
kaizen 0:bc0fe324d7e2 104 char* domainName="kr.pool.ntp.org"; //SET TO DOMAIN NAME OF SERVER GETTING TIME FROM
kaizen 0:bc0fe324d7e2 105 //GETS THE TIME FROM THE SERVER
kaizen 0:bc0fe324d7e2 106 //setTime(DOMAIN_NAME,PORT_NUMBER,TIME_OUT)
kaizen 0:bc0fe324d7e2 107 //DOMAIN_NAME= domain name
kaizen 0:bc0fe324d7e2 108 //PORT NUMBER=port number (123 for NTP)
kaizen 0:bc0fe324d7e2 109 //TIME_OUT= timeout value for request
kaizen 0:bc0fe324d7e2 110 ntpClient.setTime(domainName,123,0x00005000);
kaizen 0:bc0fe324d7e2 111 printf("Time Set\r\n");
kaizen 0:bc0fe324d7e2 112 //Delay for human time to read LCD display
kaizen 0:bc0fe324d7e2 113 wait(3.0);
kaizen 0:bc0fe324d7e2 114
kaizen 0:bc0fe324d7e2 115 char buffer[80]; //BUFFER TO HOLD FORMATTED TIME DATA
kaizen 3:1f2938317c31 116 // gOled.printf("%s, %s %s, %s\r\n",city,stateAbrv,zip,countryAbrv); //PRINT CITY STATE AND ZIP INFORMATION AND COUNTRY
kaizen 3:1f2938317c31 117 // gOled.printf("LAT:%s\r\nLONG:%s\r\n",latitude,longitude); //PRINT LATITUDE AND LONGITUDE
kaizen 3:1f2938317c31 118 // gOled.printf("Timezone:%s\r\n",timeZone); //PRINT TIMEZONE
kaizen 3:1f2938317c31 119
kaizen 0:bc0fe324d7e2 120
kaizen 0:bc0fe324d7e2 121 wizfi250.disconnect(); //DISCONNECT FROM THE NETWORK
kaizen 0:bc0fe324d7e2 122 while (1) {
kaizen 0:bc0fe324d7e2 123 //ctTime = time(NULL)-(3600*4); //TIME with offset for eastern time US
kaizen 0:bc0fe324d7e2 124 ctTime = time(NULL)+(3600*9); //TIME with offset for eastern time KR
kaizen 0:bc0fe324d7e2 125 //FORMAT TIME FOR DISPLAY AND STORE FORMATTED RESULT IN BUFFER
kaizen 0:bc0fe324d7e2 126 strftime(buffer,80,"%a %b %d\r\n%T %p %z\r\n %Z\r\n",localtime(&ctTime));
kaizen 3:1f2938317c31 127 // gOled.printf("Univ Time Clock\r\n%s\r\n", buffer);
kaizen 3:1f2938317c31 128 // gOled.display();
kaizen 3:1f2938317c31 129 // gOled.setTextCursor(0,40);
kaizen 4:6d1627cfb314 130 printf("%s, %s %s, %s\r\n",city,stateAbrv,zip,countryAbrv); //PRINT CITY STATE AND ZIP INFORMATION AND COUNTRY
kaizen 4:6d1627cfb314 131 printf("LAT:%s\r\nLONG:%s\r\n",latitude,longitude); //PRINT LATITUDE AND LONGITUDE
kaizen 4:6d1627cfb314 132 printf("Timezone:%s\r\n",timeZone); //PRINT TIMEZONE
kaizen 3:1f2938317c31 133 printf("Univ Time Clock\r\n%s\r\n", buffer);
kaizen 0:bc0fe324d7e2 134 wait(1);
kaizen 0:bc0fe324d7e2 135 }
kaizen 0:bc0fe324d7e2 136 }
kaizen 0:bc0fe324d7e2 137
kaizen 0:bc0fe324d7e2 138 //SET FOR CSV FORMAT: NEEDS TO BE EDITED IF DIFFERENT FORMAT
kaizen 0:bc0fe324d7e2 139 void parse(char buffer[], int *j, char *string) {
kaizen 0:bc0fe324d7e2 140 //extracts next location string data item from buffer
kaizen 0:bc0fe324d7e2 141 int i=0;
kaizen 0:bc0fe324d7e2 142 for (i=0; i<=strlen(buffer); i++) { //TOTAL SIZE OF RETURNED DATA
kaizen 0:bc0fe324d7e2 143 if ((buffer[*j+i] == ',')||(buffer[*j+i] == '\0' )) { //IF comma or end of string
kaizen 0:bc0fe324d7e2 144 //comma is the string field delimiter
kaizen 0:bc0fe324d7e2 145 string[i]=0; //SETS END OF SRTRING TO 0
kaizen 0:bc0fe324d7e2 146 *j=*j+i+1; //UPDATES to 1 after comma seperated value
kaizen 0:bc0fe324d7e2 147 break;
kaizen 0:bc0fe324d7e2 148 } else string[i]=buffer[*j+i]; //Keep adding to the string
kaizen 0:bc0fe324d7e2 149 }
kaizen 0:bc0fe324d7e2 150 }