Austin Blackstone / Mbed 2 deprecated murataTCPDemo

demo of Murata wifi chip as TCP client.

Dependencies:   SNICInterface mbed-rtos mbed

Fork of murataDemo by Austin Blackstone

Intro

this program demonstrates how to use TCP on the Murata Wifi chip. It will connect to a server and send a message, the server will then send a reply. The reply will be printed out to the terminal on the microcontroller.

Instructions

  1. Make sure you have both the wifi device and the computer running the server on the same network / wifi router.
  2. Change the hard coded IP in the microcontroller code to match that of the laptop running the python server.
  3. Run the python2 script below on the computer
  4. Have a console hooked up to the microcontroller and watch as messages are sent back and forth between the server (python) and the client (murata).
  5. Run the microcontroller code on the device.

For ease of use numbers have been appended to the end of the messages being sent back and forth.

Python Server

Please run this python2.7 code on your computer. Make sure to change the IP Address in the microcontroller code to match the IP of your computer.

import socket
 
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.bind(('', 7))
s.listen(1)
 
x = 0
while True:
    conn, addr = s.accept()
    print 'Connected b'TCP data from server: 'y', addr
    while True:
        # receive data from board
        data = conn.recv(1024)
        
        # check received data
        if not data: 
            break
        
        # print received data 
        print("TCP data from microcontroller: '"+data+"'")
        
        # send data to board with counter to differentiate messages
        conn.sendall("HelloFromPython!: "+str(x)+"\n\r")
        x+=1

    # close the port
    conn.close()

main.cpp

Committer:
mbedAustin
Date:
2015-04-02
Revision:
30:de5a32932408
Parent:
29:9f08c7152c7a
Child:
31:c42d189364b4

File content as of revision 30:de5a32932408:

/* Copyright (C) 2014 Murata Manufacturing Co.,Ltd., MIT License
 *  muRata, SWITCH SCIENCE Wi-FI module TypeYD SNIC-UART.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
 * and associated documentation files (the "Software"), to deal in the Software without restriction,
 * including without limitation the rights to use, copy, modify, merge, publish, distribute,
 * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all copies or
 * substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
#include "mbed.h"
#include "SNIC_WifiInterface.h"

Serial pc(USBTX, USBRX);


#define WIFI_SSID                  "demossid"
#define WIFI_SECURITY_TYPE         e_SEC_OPEN
#define WIFI_SECUTIRY_KEY          "WPA2_PASSPHRASE"
#define WIFI_SECUTIRY_KEY_LEN      15

//#define WIFI_SSID                  "AP_SSID"
//#define WIFI_SECURITY_TYPE         e_SEC_WPA2_AES
//#define WIFI_SECUTIRY_KEY          "WPA2_PASSPHRASE"
//#define WIFI_SECUTIRY_KEY_LEN      15


C_SNIC_WifiInterface     wifi( D1, D0, NC, NC, D3 );


void scanCallbackFn(tagSCAN_RESULT_T *scan_result)
{
    printf("\r\n");
    printf("channel = %d \r\n"      ,scan_result->channel);
    printf("rssi = %d \r\n"         ,scan_result->rssi);
    printf("security = %d \r\n"     ,scan_result->security);
    printf("bssid = %x%x%x%x%x%x\r\n",scan_result->bssid[0],scan_result->bssid[1],scan_result->bssid[2],scan_result->bssid[3],scan_result->bssid[4],scan_result->bssid[5]);
    printf("network_type = %d \r\n" ,scan_result->network_type);
    printf("max_rate = %d \r\n"     ,scan_result->max_rate);
    printf("ssid = %s \r\n"         ,scan_result->ssid);
}


int main()
{
    // for built in debug printouts
//    pc.baud( 115200 );

    int check = 0;

    // Initialize Wi-Fi interface
    check = wifi.init();
    if( check != 0 ) {
        printf( "Wifi could not be initialized, halting.\r\n" );
        return -1;
    } else {
        printf("wifi initialized successfully!\r\n");
    }
    wait(0.5);

    // good form to make sure you are disconnected from all AP's
    check = wifi.disconnect();
    if( check != 0 ) {
        printf( "disconnect failed\r\n" );
        return -1;
    } else {
        printf("disconnection successful!\r\n");
    }
    wait(0.3);

    // Connect AP
    check = wifi.connect( WIFI_SSID
                          , strlen(WIFI_SSID)
                          , WIFI_SECURITY_TYPE
                          , WIFI_SECUTIRY_KEY
                          , WIFI_SECUTIRY_KEY_LEN );
    if( check != 0) {
        printf("Connect Failed\r\n");
    } else {
        printf("connected successfully!\r\n");
    }
    wait(0.5);

    // Get DHCP IP
    check = wifi.setIPConfig( true ); // get IP as DHCP IP
    if(check != 0) {
        printf("SetIPConfig failed \r\n");
    } else {
        printf("SetIPConfig successful \r\n");
    }

    // Get RSSI
    signed char temp = 0;
    check = wifi.getRssi(&temp);
    if(check != 0) {
        printf("getRssi failed. \r\n");
    } else {
        printf("getRssi success: %d \r\n",temp);
    }

    // check IP Address
    char * ip ;
    ip = wifi.getIPAddress();
    if(ip == 0) {
        printf("getIP failed. \r\n");
    } else {
        printf("getIP success: %s \r\n",ip);
    }

    // get wifi status
    tagWIFI_STATUS_T status;
    check = wifi.getWifiStatus(&status);
    if(check != 0) {
        printf("getWifiStatus failed \r\n");
    } else {
        // Status 0=WifiOff, 1=No Network, 2=Connected to AP, 3=Started AP mode
        printf("getWifiStatus success: status =%d, MAC = %x%x%x%x%x%x, SSID = %s  \r\n",
               status.status,
               status.mac_address[0], status.mac_address[1],
               status.mac_address[2], status.mac_address[3],
               status.mac_address[4], status.mac_address[5],
               status.ssid );
    }

    // scan for wifi
    check = wifi.scan(NULL,NULL,scanCallbackFn);
    if(check != 0) {
        printf("scan failed! \r\n");
    } else {
        printf("Scan Success! \r\n");

    }

//    if(check != 0){
//        printf(" \r\n");
//    }else{
//        printf(" \r\n");
//    }

    wait( 1.0 );
}