WIZnet
Using TCP Client on WIZwiki-W7500, display weather conditions on led and temperature with servo-motor
Dependencies: WIZnetInterface mbed-src
Prerequisite
This example is for PIR test using digital I/O.
To implement this function, you need a Platform board, network Interface board.
- WIZwiki-W7500 from WIZnet (Platform board and Ethernet I/F board)
Hardware Configuration
WIZwiki-W7500 Pin map
Just connect Ethernet Cable & USB Cable
Software
Init Ethernet
void initEthernet(uint8_t* mac_addr) {
int phy_link;
eth.init(mac_addr); //Use DHCP
eth.connect();
/* phy link */
do{
phy_link = eth.ethernet_link();
printf(".");
wait(2);
}while(!phy_link);
printf("\r\n");
printf("IP Address is %s\r\n", eth.getIPAddress());
}
Request to server using HTTP
void requestHTTP(void)
{
char req_buf[256];
/* TCP socket connect */
sock.connect(WEB_SERVER, 80);
/* Request to WEB Server using HTTP */
sprintf(req_buf,"GET /data/2.5/weather?q=%s,%s&appid=%s HTTP/1.1\nHost: %s\nConnection: close\n\n",
CITY,COUNTRY, API_KEY, WEB_SERVER);
sock.send_all(req_buf, strlen(req_buf));
}
Get data from server & Parsing it
void parsingGetData(void)
{
char buffer[1024];
/* get info */
int ret;
while (true) {
ret = sock.receive_all(buffer, sizeof(buffer)-1);
if (ret <= 0) break;
buffer[ret] = '\0';
pc.printf("Received %d chars from server: %s\n", ret, buffer);
}
/* parsing weather, city, tempurature */
char *weather;
char *city;
char *temp;
uint8_t i;
pc.printf("\r\n\r\n======== WeatherForecast ========\r\n");
weather = strstr(buffer, "main");
pc.printf("\t State : ");
for(i = 7; i < 20; i++)
{
if(*(weather+i) == '\"') break;
pc.printf("%c", *(weather+i));
}
city = strstr(buffer, "name");
pc.printf("\r\n\t City : ");
for(i = 7; i < 20; i++)
{
if(*(city+i) == '\"') break;
pc.printf("%c", *(city+i));
}
temp = strstr(buffer, "temp");
pc.printf("\r\n\t temp(kelvin) : ");
for(i = 6; i < 12; i++)
{
if((*(temp+i) == '\"')||(*(temp+i) == ',')) break;
pc.printf("%c", *(temp+i));
}
pc.printf("\r\n\r\n");
}
Caution
Must fix API_KEY & MAC Address
Revision 19:46fa6a0a9b5c, committed 2017-04-07
- Comitter:
- kei44
- Date:
- Fri Apr 07 08:51:49 2017 +0000
- Parent:
- 18:a02a73acd3c8
- Commit message:
- Modify old code.
Changed in this revision
--- a/Servo.lib Mon Jun 29 07:41:31 2015 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,1 +0,0 @@ -http://mbed.org/users/simon/code/Servo/#36b69a7ced07
--- a/WIZnetInterface.lib Mon Jun 29 07:41:31 2015 +0000 +++ b/WIZnetInterface.lib Fri Apr 07 08:51:49 2017 +0000 @@ -1,1 +1,1 @@ -http://developer.mbed.org/teams/WIZnet/code/WIZnetInterface/#7d7553e0578e +http://developer.mbed.org/teams/WIZnet/code/WIZnetInterface/#c91884bd2713
--- a/main.cpp Mon Jun 29 07:41:31 2015 +0000
+++ b/main.cpp Fri Apr 07 08:51:49 2017 +0000
@@ -1,132 +1,138 @@
+#include <stdio.h>
+#include <string.h>
#include "mbed.h"
#include "EthernetInterface.h"
-#include "Servo.h"
-DigitalOut bled(D6);
-DigitalOut gled(D5);
-DigitalOut rled(D4);
+#define CITY "Seoul"
+#define COUNTRY "kr"
+#define API_KEY "YOUR_API" //Fix This
+#define WEB_SERVER "api.openweathermap.org"
-Servo myservo(D15);
+Serial pc(USBTX, USBRX);
+EthernetInterface eth;
+TCPSocketConnection sock;
-int main() {
-
- int phy_link;
- printf("Wait a second...\r\n");
- uint8_t mac_addr[6] = {0x00, 0x08, 0xDC, 0x00, 0x01, 0x02};
+uint8_t mac_addr[6] = {0x00, 0x08, 0xDC, 0xFF, 0xFF, 0xFF}; //Fix This
+
+// Function Prototypes
+void parsingGetData(void);
+void initEthernet(uint8_t* mac_addr);
+void requestHTTP(void);
+
+int main()
+{
+ pc.baud(115200);
- EthernetInterface eth;
- eth.init(mac_addr); //Use DHCP
-
- while(1){
-
- eth.connect();
+ initEthernet(mac_addr);
- /* phy link */
- do{
- phy_link = eth.ethernet_link();
- printf("...");
- wait(2);
- }while(!phy_link);
- printf("\r\n");
-
- printf("IP Address is %s\r\n", eth.getIPAddress());
+ while(1)
+ {
+ requestHTTP();
+
+ parsingGetData();
- /* TCP socket connect */
- TCPSocketConnection sock;
- sock.connect("api.openweathermap.org", 80);
-
- /* weather */
- char http_cmd[] = "GET /data/2.5/weather?q=Seoul,kr HTTP/1.0\n\n";
- //char http_cmd[] = "GET /data/2.5/weather?q=London,uk HTTP/1.0\n\n";
- //char http_cmd[] = "GET /data/2.5/weather?q=Berlin,de HTTP/1.0\n\n";
- sock.send_all(http_cmd, sizeof(http_cmd)-1);
-
+ sock.close();
+ eth.disconnect();
+
+ wait(60.0);
+ };
+
+}
+
+/**
+ * @brief parsing Get Data from server
+ * @detail Function get data from server at once & parsing it for take needed data
+ * @param void
+ * @return void
+ * @throws return Occurs when the param value exceeds the specified range.
+ */
+void parsingGetData(void)
+{
+ char buffer[1024];
+
/* get info */
- char buffer[420];
int ret;
while (true) {
- ret = sock.receive(buffer, sizeof(buffer)-1);
- if (ret <= 0)
- break;
+ ret = sock.receive_all(buffer, sizeof(buffer)-1);
+ if (ret <= 0) break;
buffer[ret] = '\0';
- printf("Received %d chars from server: %s\n", ret, buffer);
+ pc.printf("Received %d chars from server: %s\n", ret, buffer);
}
-
- /* get weather, city, tempurature */
+
+ /* parsing weather, city, tempurature */
char *weather;
char *city;
- char *tempure;
-
- char weather_stu[3];
- char city_name[6];
- char tempure_data[6];
+ char *temp;
+ uint8_t i;
- weather = strstr(buffer, "main");
- printf("%.4s\n", weather + 7);
- for(int i=0; i<3;i++){
- weather_stu[i] = weather[i+7];
- printf("%c",weather_stu[i]);
- }
-
- city = strstr(buffer, "name");
- printf("%.6s\n", city + 7);
- for(int k=0; k<6;k++){
- city_name[k] = city[k+7];
- printf("%c",city_name[k]);
- }
-
- tempure = strstr(buffer, "temp");
- printf("%.3s\n", tempure + 6);
- for(int j=0; j<6;j++){
- tempure_data[j] = tempure[j+6];
- printf("%c",tempure_data[j]);
- }
+ pc.printf("\r\n\r\n======== WeatherForecast ========\r\n");
+ weather = strstr(buffer, "main");
+ pc.printf("\t State : ");
+ for(i = 7; i < 20; i++)
+ {
+ if(*(weather+i) == '\"') break;
+ pc.printf("%c", *(weather+i));
+ }
+
+ city = strstr(buffer, "name");
+ pc.printf("\r\n\t City : ");
+ for(i = 7; i < 20; i++)
+ {
+ if(*(city+i) == '\"') break;
+ pc.printf("%c", *(city+i));
+ }
- /*tempurature display */
- float data[2]={0};
- data[0] = tempure_data[1]-'7';
- data[1] = tempure_data[2]-'3';
-
- myservo = (data[0]*10+data[1])/40;
+ temp = strstr(buffer, "temp");
+ pc.printf("\r\n\t temp(kelvin) : ");
+ for(i = 6; i < 12; i++)
+ {
+ if((*(temp+i) == '\"')||(*(temp+i) == ',')) break;
+ pc.printf("%c", *(temp+i));
+ }
+ pc.printf("\r\n\r\n");
+}
- printf("%f",(data[0]*10+data[1])/40);
-
- /* weather display */
- if(strcmp(weather_stu,"Clo")==0) {
- rled = 1;
- gled = 1;
- bled = 1;
- }else if(strcmp(weather_stu,"Rai")==0) {
- rled = 0;
- gled = 0;
- bled = 1;
- }else if(strcmp(weather_stu,"Cle")==0){
- rled = 1;
- gled = 1;
- bled = 0;
- }else if(strcmp(weather_stu,"Mis")==0){
- rled = 1;
- gled = 0;
- bled = 1;
- }else if(strcmp(weather_stu,"Haz")==0) {
- rled = 1;
- gled = 1;
- bled = 1;
- }else if(strcmp(weather_stu,"Fog")==0){
- rled = 1;
- gled = 0;
- bled = 1;
- }else {
- rled = 0;
- gled = 0;
- bled = 0;
- }
+/**
+ * @brief Request to server using HTTP.
+ * @detail Sends param values to the server via HTTP.
+ * @param void
+ * @return void
+ * @throws
+ */
+void requestHTTP(void)
+{
+ char req_buf[256];
+
+ /* TCP socket connect */
+ sock.connect(WEB_SERVER, 80);
+
+ /* Request to WEB Server using HTTP */
+ sprintf(req_buf,"GET /data/2.5/weather?q=%s,%s&appid=%s HTTP/1.1\nHost: %s\nConnection: close\n\n",
+ CITY,COUNTRY, API_KEY, WEB_SERVER);
+ sock.send_all(req_buf, strlen(req_buf));
+}
- sock.close();
-
- eth.disconnect();
+/**
+ * @brief Initialize W5500 (Ethernet chip)
+ * @detail Function to initialize W5500 chip to use ethernet
+ * @param void
+ * @return void
+ * @throws
+ */
+void initEthernet(uint8_t* mac_addr) {
+ int phy_link;
+
+ eth.init(mac_addr); //Use DHCP
- wait(60.0);
- };
-
+ eth.connect();
+
+ /* phy link */
+ do{
+ phy_link = eth.ethernet_link();
+ printf(".");
+ wait(2);
+ }while(!phy_link);
+ printf("\r\n");
+
+ printf("IP Address is %s\r\n", eth.getIPAddress());
}
\ No newline at end of file
--- a/mbed-src.lib Mon Jun 29 07:41:31 2015 +0000 +++ b/mbed-src.lib Fri Apr 07 08:51:49 2017 +0000 @@ -1,1 +1,1 @@ -http://mbed.org/users/mbed_official/code/mbed-src/#30f9462b5296 +http://mbed.org/users/mbed_official/code/mbed-src/#a11c0372f0ba