DongEun Koak (kaizen)
Published © Apache-2.0

Oil Check System Using Wi-Fi

This is an oil check system using Wi-Fi module with cloud service.

BeginnerFull instructions provided163
Oil Check System Using Wi-Fi

Things used in this project

Hardware components

WIZwiki-W7500
WIZnet WIZwiki-W7500
×1
WizFi250-EVB
×1

Hand tools and fabrication machines

mbed

Story

Read more

Schematics

20150817_150115.png

Code

Code

Plain text
[WizFi250: INFO]AT+MMAC=?
[WizFi250: INFO][OK]

[WizFi250: INFO]AT+WSET=0,wizohp
[WizFi250: INFO][OK]

[WizFi250: INFO]AT+WSEC=0,,wiznet218
[WizFi250: INFO][OK]

[WizFi250: INFO]AT+WJOIN
[WizFi250: INFO][OK]

[WizFi250: INFO]AT+WSTATUS
[WizFi250: INFO][OK]

[WizFi250: INFO]IP      : 192.168.13.29
[WizFi250: INFO]Gateway : 192.168.13.1
[WizFi250: INFO]WizFi250 is successfully join to AP
 - WiFi Ready
IP Address is 192.168.13.29
Sending Value for well1 0.54
[WizFi250: INFO]AT+FDNS=toolbox-connect.axeda.com,1000
[WizFi250: INFO][OK]

[WizFi250: DBG]216.34.120.52
[WizFi250: INFO]AT+SCON=O,TCN,216.34.120.52,80,,0
[WizFi250: INFO][OK]

[WizFi250: INFO]AT+SSEND=0,,,799
[WizFi250: INFO][OK]

[WizFi250: INFO]POST /ammp/data/1/mbed!nlr__kaizen8501_gmail_com___6245114 HTTP/1.1
Content-Type: application/json
Content-Length: 65

{"data":[{"di":{"oil_level":0.54}}]}



[WizFi250: DBG]receive readable : 1

Received 36 chars from server:
HTTP/1.1 200 
Content-Length: 0

Code

Plain text
#include <stdio.h>
#include "mbed.h"
#include "WizFi250Interface.h"

#define SECURE WizFi250::SEC_AUTO
#define SSID "ssid"
#define PASS "key"

#if defined(TARGET_WIZwiki_W7500)
    WizFi250Interface wizfi250(D1,D0,D7,D8,PA_12,NC,115200);
    Serial pc(USBTX,USBRX);
#endif

AnalogIn pot1(A0);
TCPSocketConnection sock;

DigitalOut led1(LED1);
DigitalOut led2(LED2);
DigitalOut led3(LED3);
DigitalOut led4(LED4);

int main()
{
    char *MODEL = "mbed";
    char *SERIAL_NUM = "serial number";
    float DEADBAND = 0.03;

    int http_cmd_sz=800;
    char http_cmd[http_cmd_sz];
    int buffer_sz=300;
    char buffer[buffer_sz];
    int returnCode = 0;

    led1 = 1;
    led2 = 1;
    led3 = 1;
    led4 = 1;

    pc.baud(115200);

    wizfi250.init();
    returnCode = wizfi250.connect(SECURE, SSID, PASS);

    if ( returnCode == 0 )
    {
        printf(" - WiFi Ready\r\n");
        printf("IP Address is %s\r\n", wizfi250.getIPAddress());
        led1 = returnCode;
    }
    else
    {
        printf(" - Could not initialize WiFi - ending\r\n");
        return 0;
    }

    float oil_level = 0.0;
    float oldPotVal = -2.0;

    while(1) {
        oil_level = pot1.read();

        if ( abs(oil_level - oldPotVal) < DEADBAND)
        {
            continue;
        }
        else
        {
            oldPotVal = oil_level;
            printf("Sending Value for well1 %.2f\n\r", oil_level);
            sock.connect("toolbox-connect.axeda.com", 80);

            snprintf(http_cmd, http_cmd_sz,  "POST /ammp/data/1/%s!%s HTTP/1.1\r\nContent-Type: application/json\r\nContent-Length: 65\r\n\r\n{\"data\":[{\"di\":{\"oil_level\":%.2f}}]}\r\n\r\n", MODEL, SERIAL_NUM, oil_level);
            sock.send_all(http_cmd, http_cmd_sz-1);

            while ( (returnCode = sock.receive(buffer, buffer_sz-1)) > 0)
            {
                buffer[returnCode] = '\0';
                printf("Received %d chars from server:\n\r%s\n", returnCode, buffer);
            }

            sock.close();
        }
     }
}

Code

Plain text
[WizFi250: INFO]AT+MMAC=?
[WizFi250: INFO][OK]

[WizFi250: INFO]AT+WSET=0,wizohp
[WizFi250: INFO][OK]

[WizFi250: INFO]AT+WSEC=0,,wiznet218
[WizFi250: INFO][OK]

[WizFi250: INFO]AT+WJOIN
[WizFi250: INFO][OK]

[WizFi250: INFO]AT+WSTATUS
[WizFi250: INFO][OK]

[WizFi250: INFO]IP      : 192.168.13.29
[WizFi250: INFO]Gateway : 192.168.13.1
[WizFi250: INFO]WizFi250 is successfully join to AP
 - WiFi Ready
IP Address is 192.168.13.29
Sending Value for well1 0.54
[WizFi250: INFO]AT+FDNS=toolbox-connect.axeda.com,1000
[WizFi250: INFO][OK]

[WizFi250: DBG]216.34.120.52
[WizFi250: INFO]AT+SCON=O,TCN,216.34.120.52,80,,0
[WizFi250: INFO][OK]

[WizFi250: INFO]AT+SSEND=0,,,799
[WizFi250: INFO][OK]

[WizFi250: INFO]POST /ammp/data/1/mbed!nlr__kaizen8501_gmail_com___6245114 HTTP/1.1
Content-Type: application/json
Content-Length: 65

{"data":[{"di":{"oil_level":0.54}}]}



[WizFi250: DBG]receive readable : 1

Received 36 chars from server:
HTTP/1.1 200 
Content-Length: 0

Credits

DongEun Koak (kaizen)

DongEun Koak (kaizen)

6 projects • 7 followers

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