WiFly Click

  1 #include "WiFly_Rn_131.h"
  2 #include "resources.h"
  3 
  4 // WiFly click connections
  5 sbit WiFly_Rn_131_RST     at  LATC.B1;
  6 sbit WiFly_Rn_131_RST_DIR at  TRISC.B1;
  7 // WiFly click connections
  8 
  9 unsigned char isConnect    = 0;
 10 unsigned char isOpen       = 0;
 11 
 12 unsigned char recMessage[2048];
 13 unsigned char tmp;
 14 unsigned int data_len = 0;
 15 unsigned char data_ready    = 0;
 16 unsigned char tryToConnect  = 0;
 17 unsigned char recFromServer = 0;
 18 unsigned char recMessServer = 0;
 19 
 20 // Network/server information
 21 char SSID_string[] ="mikroe_test";
 22 char TCP_Server_port[] ="8001";
 23 char TCP_Server_Address[] ="192.168.1.2";
 24 
 25 void UART2interrupt() iv IVT_UART_2 ilevel 6 ics ICS_AUTO {
 26   tmp = UART2_Read();
 27 
 28   if (tmp == '>' || (tmp == 0x0D && recFromServer ) || data_len > 100) {
 29     if(tmp == '>')
 30       recMessage[data_len + 1] = '>';
 31     else 
 32       recMessage[data_len + 1] = 0;
 33     recMessage[data_len + 2] = 0;
 34     data_ready = 1;
 35   }
 36   else {
 37     if(recMessServer && (data_len == 5))
 38       data_ready = 1;
 39     recMessage[data_len] = tmp;
 40     data_len++;
 41   }
 42   U2RXIF_bit = 0;
 43 }
 44 
 45 void resetUart(){
 46   data_ready = 0;
 47   data_len = 0;
 48 }
 49 
 50 void checkUartError(){
 51   if(U2STAbits.OERR){
 52     U2STAbits.OERR = 0;
 53   }
 54 }
 55 
 56 void readData(){
 57   while(!data_ready)
 58     ;
 59   resetUart();
 60 }
 61 
 62 void main() {
 63   // Set all pins to digital
 64   AD1PCFG = 0xFFFF;
 65   JTAGEN_bit = 0;
 66 
 67   // Set WiFly Reset pin as output
 68   WiFly_Rn_131_RST_DIR = 0;
 69   
 70   // Reset WiFly module
 71   WiFly_Rn_131_RST = 1;
 72   delay_ms(10);
 73   WiFly_Rn_131_RST = 0;
 74   delay_ms(10);
 75   WiFly_Rn_131_RST = 1;
 76   delay_ms(10);
 77   
 78   DrawScreen();
 79 
 80   // Initialize UART
 81   UART2_Init(9600);
 82 
 83   // Set UART interrupt
 84   U2IP0_bit = 0;                     // Set UART2 interrupt
 85   U2IP1_bit = 1;                     // Set interrupt priorities
 86   U2IP2_bit = 1;                     // Set UART2 interrupt to level 6
 87 
 88   U2RXIF_bit = 0;                    // Ensure interrupt not pending
 89   U2RXIE_bit = 1;                    // Enable intterupt
 90   EnableInterrupts();
 91 
 92   // Enter command mode
 93   WiFly_Rn_131_EnterInCmdMode();
 94   delay_ms(100);
 95 
 96   // Scan for the network
 97   TFT_Write_Text("Scanning for the network...", 80, 60);
 98   WiFly_Rn_131_Scan();
 99   delay_ms(5000);
100   
101   // Set network
102   WiFly_Rn_131_SetWlan(ssid_string);
103   delay_ms(100);
104 
105   // Join network
106   TFT_Write_Text("Connecting to network...", 80, 80);
107   WiFly_Rn_131_JoinNet();
108   delay_ms(1000);
109 
110   TFT_Write_Text("Connected to network!", 80, 100);
111 
112   // Try to connect to TCP server
113   while(!isOpen) {
114     delay_ms(1000);
115     TFT_Write_Text("Connecting to TCP server...", 80, 125);
116     checkUartError();
117     resetUart();
118 
119     // Connect to TCP server
120     WiFly_Rn_131_OpenConn("192.168.1.2", "8001");
121     readData();
122 
123     recMessServer = 1;
124 
125     while(!data_ready)
126       ;
127 
128     if(strstr(recMessage, "OPEN")) {
129       isOpen = 1;
130       recMessServer = 0;
131     }
132     else {
133       tryToConnect++;
134       recMessServer = 0;
135     }
136 
137     //  If not connected to TCP server
138     if(tryToConnect > 8) {
139       // Exit from command mode
140       WiFly_Rn_131_ExitFromCmdMode();
141       TFT_Write_Text("Can't connect to TCP server!", 80, 145);
142       while(1)
143         ;
144     }
145   }
146 
147   TFT_Write_Text("Connected to TCP server!", 80, 145);
148   delay_ms(1000);
149   TFT_Write_Text("Received data :", 80, 170);
150 
151   // Exit from command mode
152   WiFly_Rn_131_ExitFromCmdMode();
153   
154   while(!data_ready)
155     ;
156 
157   resetUart();
158   recFromServer = 1;
159 
160   // Receive data from TCP server
161   while(1){
162     checkUartError();
163     while(!data_ready)
164       ;
165 
166     TFT_Set_Pen(CL_WHITE, 10);
167     TFT_Set_Brush(1, CL_WHITE, 0, 0, 0, 0);
168     TFT_Rectangle(80, 190, 250, 205);
169     TFT_Write_Text(recMessage, 80, 190);
170 
171     resetUart();
172   }
173 }