Diff: Receiver.cpp

Revision:

0:e246677dfb3b

Child:

1:7f3a0c145a08

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Receiver.cpp	Wed Jul 06 06:26:16 2016 +0000
@@ -0,0 +1,194 @@
+/*****Multiceiver wireless network with IoT*****/
+
+#include "mbed.h"
+#include "nRF24L01P.h"
+#include "ESP8266.h"
+
+//Serial Transmission
+Serial pc(USBTX, USBRX); // tx, rx
+
+//wifi UART port and baud rate
+ESP8266 wifi(PTE0, PTE1, 115200); 
+
+//nRF module 
+nRF24L01P my_nrf24l01p(PTD2, PTD3, PTD1, PTD0, PTD5, PTD4);    // mosi, miso, sck, csn, ce, irq
+
+//blue for pipe1 and green for pipe0
+DigitalOut GreenLED(LED2);
+DigitalOut RedLED(LED1);
+
+//buffers for wifi library
+char snd[255],resp[1000];
+char http_cmd[300], comm[300];
+int timeout = 3000; //timeout for wifi commands
+
+char count[1];
+char RxDataCnt_PIPE0, RxDataCnt_PIPE1;
+char temp;
+
+//potvalue and ldrvalue
+char pot_val, ldr_val;
+float potval, ldrval;
+float opv=0;
+float olv=0;
+
+//Public and private keys for phant
+char* Public_Key = "3I4DFZQSYETVGFM9";
+char* Private_Key = "3CVTRI3P2PMCQI6M";
+    
+//SSID and password for connection
+#define SSID "RIFT"
+#define PASS "rift2015"
+
+//Remote IP
+#define IP "184.106.153.149" //184.106.153.149-ThingsSpeak IP
+
+//Wifi init function
+void wifi_initialize(void){
+    
+    pc.printf("******** Resetting wifi module ********\r\n");
+    wifi.Reset();
+    
+    //wait for 5 seconds for response, else display no response receiveed
+    if (wifi.RcvReply(resp, 5000))    
+        pc.printf("%s",resp);    
+    else
+        pc.printf("No response");
+    
+    pc.printf("******** Setting Station mode of wifi with AP ********\r\n");
+    wifi.SetMode(1);    // set transparent  mode
+    if (wifi.RcvReply(resp, timeout))    //receive a response from ESP
+        pc.printf("%s",resp);    //Print the response onscreen
+    else
+        pc.printf("No response while setting mode. \r\n");
+    
+    pc.printf("******** Joining network with SSID and PASS ********\r\n");
+    wifi.Join(SSID, PASS);     
+    if (wifi.RcvReply(resp, timeout))    
+        pc.printf("%s",resp);   
+    else
+        pc.printf("No response while connecting to network \r\n");
+        
+    pc.printf("******** Getting IP and MAC of module ********\r\n");
+    wifi.GetIP(resp);     
+    if (wifi.RcvReply(resp, timeout))    
+        pc.printf("%s",resp);    
+    else
+        pc.printf("No response while getting IP \r\n");
+    
+    pc.printf("******** Setting WIFI UART passthrough ********\r\n");
+    wifi.setTransparent();          
+    if (wifi.RcvReply(resp, timeout))    
+        pc.printf("%s",resp);    
+    else
+        pc.printf("No response while setting wifi passthrough. \r\n");
+    wait(1);    
+    
+    pc.printf("******** Setting single connection mode ********\r\n");
+    wifi.SetSingle();             
+    wifi.RcvReply(resp, timeout);
+    if (wifi.RcvReply(resp, timeout))    
+        pc.printf("%s",resp);    
+    else
+        pc.printf("No response while setting single connection \r\n");
+    wait(1);
+}
+
+void wifi_send(void){
+    
+    pc.printf("******** Starting TCP connection on IP and port ********\r\n");
+    wifi.startTCPConn(IP, 80);    //cipstart
+    wifi.RcvReply(resp, timeout);
+    if (wifi.RcvReply(resp, timeout))    
+        pc.printf("%s",resp);    
+    else
+        pc.printf("No response while starting TCP connection \r\n");
+    wait(1);
+    
+    //create link 
+    sprintf(http_cmd,"/update?api_key=%s&field1=%.2f&field2=%.2f",Public_Key,ldrval,potval); 
+    pc.printf(http_cmd);
+    
+    pc.printf("******** Sending URL to wifi ********\r\n");
+    wifi.sendURL(http_cmd, comm);   //cipsend and get command
+    if (wifi.RcvReply(resp, timeout))    
+        pc.printf("%s",resp);    
+    else
+        pc.printf("No response while sending URL \r\n");
+    
+}
+ 
+int main() {
+    
+    
+    //specifying address same as transmitter for pipe0 and pipe1
+    long long RxAddress_PIPE1 = 0xE2E2E2E2E2;
+    long long RxAddress_PIPE0 = 0xC2C2C2C2C2;
+    
+    my_nrf24l01p.powerUp();
+    my_nrf24l01p.setRfFrequency(2475);
+    
+    //set rx address with default address and for specified pipe
+    my_nrf24l01p.setRxAddress(RxAddress_PIPE1, DEFAULT_NRF24L01P_ADDRESS_WIDTH, NRF24L01P_PIPE_P1);
+    my_nrf24l01p.setRxAddress(RxAddress_PIPE0, DEFAULT_NRF24L01P_ADDRESS_WIDTH, NRF24L01P_PIPE_P0);
+    
+    // Display the (default) setup of the nRF24L01+ chip
+    pc.printf( "nRF24L01+ Frequency    : %d MHz\r\n",  my_nrf24l01p.getRfFrequency() );
+    pc.printf( "nRF24L01+ Output power : %d dBm\r\n",  my_nrf24l01p.getRfOutputPower() );
+    pc.printf( "nRF24L01+ Data Rate    : %d kbps\r\n", my_nrf24l01p.getAirDataRate() );
+    
+    //display rx address for both pipes
+    pc.printf( "nRF24L01+ RX Address - PIPE0  : 0x%010llX\r\n", my_nrf24l01p.getRxAddress(NRF24L01P_PIPE_P0) );
+    pc.printf( "nRF24L01+ RX Address - PIPE1  : 0x%010llX\r\n", my_nrf24l01p.getRxAddress(NRF24L01P_PIPE_P1) );
+    pc.printf( "Wireless Sensor Network - Multiceiver\r\n" );
+    
+    RxDataCnt_PIPE0 = 1;
+    RxDataCnt_PIPE1 = 1;
+    
+    //set transfer size explicitly for both pipes
+    my_nrf24l01p.setTransferSize(RxDataCnt_PIPE1, NRF24L01P_PIPE_P1);
+    my_nrf24l01p.setTransferSize(RxDataCnt_PIPE0, NRF24L01P_PIPE_P0);
+    
+    my_nrf24l01p.setReceiveMode();
+    my_nrf24l01p.enable();
+    
+    wifi_initialize();
+ 
+    while (1) {
+        
+        //check if data is available in pipe0
+        if ( my_nrf24l01p.readable(NRF24L01P_PIPE_P0) ) {
+ 
+            // ...read the data into the receive buffer
+            temp = my_nrf24l01p.read( NRF24L01P_PIPE_P0, count, RxDataCnt_PIPE0 );
+            
+            pot_val = count[0];
+            potval=pot_val/255;
+            
+            pc.printf("Received: %d bytes from PIPE0; POT=%d\r\n",temp, potval);
+            
+            // Toggle LED2 (to help debug nRF24L01+ -> Host communication)
+            GreenLED = !GreenLED;
+        }
+        
+        //check if data is there in pipe1
+        if ( my_nrf24l01p.readable(NRF24L01P_PIPE_P1) ) {
+ 
+            // ...read the data into the receive buffer
+            temp = my_nrf24l01p.read( NRF24L01P_PIPE_P1, count, RxDataCnt_PIPE1 );
+            
+            ldr_val = count[0];
+            ldrval=ldr_val/255; 
+            pc.printf("Received: %d bytes from PIPE1; LDR=%d\r\n",temp, ldrval);
+            
+            // Toggle LED2 (to help debug nRF24L01+ -> Host communication)
+            RedLED = !RedLED;
+        }
+        if(olv!=ldrval || opv!=potval)
+        {
+        wifi_send();
+        }
+        olv=ldrval;
+        opv=potval;
+        }
+}
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