main.cpp

00001 #include "mbed.h"
00002 #include "wifi.h"
00003 /*------------------------------------------------------------------------------
00004 Hyperterminal settings: 115200 bauds, 8-bit data, no parity
00005 
00006 This example 
00007   - connects to a wifi network (SSID & PWD to set in mbed_app.json)
00008   - Connects to a TCP server (set the address in RemoteIP)
00009   - Sends "Hello" to the server when data is received
00010 
00011 This example uses SPI3 ( PE_0 PC_10 PC_12 PC_11), wifi_wakeup pin (PB_13), 
00012 wifi_dataready pin (PE_1), wifi reset pin (PE_8)
00013 ------------------------------------------------------------------------------*/
00014 
00015 /* Private defines -----------------------------------------------------------*/
00016 #define WIFI_WRITE_TIMEOUT 10000
00017 #define WIFI_READ_TIMEOUT  10000
00018 #define CONNECTION_TRIAL_MAX          10
00019 
00020 /* Private typedef------------------------------------------------------------*/
00021 /* Private macro -------------------------------------------------------------*/
00022 /* Private variables ---------------------------------------------------------*/
00023 Serial pc(SERIAL_TX, SERIAL_RX);
00024 uint8_t RemoteIP[] = {MBED_CONF_APP_SERVER_IP_1,MBED_CONF_APP_SERVER_IP_2,MBED_CONF_APP_SERVER_IP_3, MBED_CONF_APP_SERVER_IP_4};
00025 uint8_t RxData [500];
00026 char* modulename;
00027 uint8_t TxData[] = "STM32 : Hello!\n";
00028 uint16_t RxLen;
00029 uint8_t  MAC_Addr[6]; 
00030 uint8_t  IP_Addr[4]; 
00031 
00032 int main()
00033 {
00034     int32_t Socket = -1;
00035     uint16_t Datalen;
00036     uint16_t Trials = CONNECTION_TRIAL_MAX;
00037 
00038     pc.baud(115200);
00039 
00040     printf("\n");
00041     printf("************************************************************\n");
00042     printf("***   STM32 IoT Discovery kit for STM32L475 MCU          ***\n");
00043     printf("***      WIFI Module in TCP Client mode demonstration    ***\n\n");
00044     printf("*** TCP Client Instructions :\n");
00045     printf("*** 1- Make sure your Phone is connected to the same network that\n");
00046     printf("***    you configured using the Configuration Access Point.\n");
00047     printf("*** 2- Create a server by using the android application TCP Server\n");
00048     printf("***    with port(8002).\n");
00049     printf("*** 3- Get the Network Name or IP Address of your phone from the step 2.\n\n"); 
00050     printf("************************************************************\n");
00051 
00052     /*Initialize  WIFI module */
00053     if(WIFI_Init() ==  WIFI_STATUS_OK) {
00054         printf("> WIFI Module Initialized.\n");  
00055         if(WIFI_GetMAC_Address(MAC_Addr) == WIFI_STATUS_OK) {
00056             printf("> es-wifi module MAC Address : %X:%X:%X:%X:%X:%X\n",     
00057                    MAC_Addr[0],
00058                    MAC_Addr[1],
00059                    MAC_Addr[2],
00060                    MAC_Addr[3],
00061                    MAC_Addr[4],
00062                    MAC_Addr[5]);   
00063         } else {
00064             printf("> ERROR : CANNOT get MAC address\n");
00065         }
00066     
00067         if( WIFI_Connect(MBED_CONF_APP_WIFI_SSID, MBED_CONF_APP_WIFI_PASSWORD, WIFI_ECN_WPA2_PSK) == WIFI_STATUS_OK) {
00068             printf("> es-wifi module connected \n");
00069             if(WIFI_GetIP_Address(IP_Addr) == WIFI_STATUS_OK) {
00070                 printf("> es-wifi module got IP Address : %d.%d.%d.%d\n",     
00071                        IP_Addr[0],
00072                        IP_Addr[1],
00073                        IP_Addr[2],
00074                        IP_Addr[3]); 
00075         
00076                 printf("> Trying to connect to Server: %d.%d.%d.%d:8002 ...\n",     
00077                        RemoteIP[0],
00078                        RemoteIP[1],
00079                        RemoteIP[2],
00080                        RemoteIP[3]);
00081         
00082                 while (Trials--){ 
00083                     if( WIFI_OpenClientConnection(0, WIFI_TCP_PROTOCOL, "TCP_CLIENT", RemoteIP, 8002, 0) == WIFI_STATUS_OK){
00084                         printf("> TCP Connection opened successfully.\n"); 
00085                         Socket = 0;
00086                     }
00087                 }
00088                 if(!Trials) {
00089                     printf("> ERROR : Cannot open Connection\n");
00090                 }
00091             } else {
00092                 printf("> ERROR : es-wifi module CANNOT get IP address\n");
00093             }
00094         } else {
00095             printf("> ERROR : es-wifi module NOT connected\n");
00096         }
00097     } else {
00098         printf("> ERROR : WIFI Module cannot be initialized.\n"); 
00099     }
00100   
00101     while(1){
00102         if(Socket != -1) {
00103             if(WIFI_ReceiveData(Socket, RxData, sizeof(RxData), &Datalen, WIFI_READ_TIMEOUT) == WIFI_STATUS_OK){
00104                 if(Datalen > 0) {
00105                     if(WIFI_SendData(Socket, TxData, sizeof(TxData), &Datalen, WIFI_WRITE_TIMEOUT) != WIFI_STATUS_OK) {
00106                         printf("> ERROR : Failed to send Data.\n");   
00107                     } 
00108                 }
00109             } else {
00110                 printf("> ERROR : Failed to Receive Data.\n");  
00111             }
00112         }
00113     }
00114 }