Diff: gateway.cpp

Revision:

1:9de46f7e559e

Child:

2:5d88c51f53dc

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gateway.cpp	Tue Nov 10 20:42:23 2015 +0000
@@ -0,0 +1,109 @@
+#include "mbed.h"
+#include "MRF24J40.h"
+#include <string>
+
+
+// RF tranceiver to link with handheld.
+MRF24J40 mrf(p11, p12, p13, p14, p21);
+
+DigitalOut myled(LED1);
+
+// Serial port for showing RX data.
+Serial pc(USBTX, USBRX);
+
+// Used for sending and receiving
+char txBuffer[128];
+char rxBuffer[128];
+int rxLen;
+
+//***************** Do not change these methods (please) *****************//
+
+/**
+* Receive data from the MRF24J40.
+*
+* @param data A pointer to a char array to hold the data
+* @param maxLength The max amount of data to read.
+*/
+int rf_receive(char *data, uint8_t maxLength)
+{
+    uint8_t len = mrf.Receive((uint8_t *)data, maxLength);
+    uint8_t header[8]= {1, 8, 0, 0xA1, 0xB2, 0xC3, 0xD4, 0x00};
+
+    if(len > 10) {
+        //Remove the header and footer of the message
+        for(uint8_t i = 0; i < len-2; i++) {
+            if(i<8) {
+                //Make sure our header is valid first
+                if(data[i] != header[i])
+                    return 0;
+            } else {
+                data[i-8] = data[i];
+            }
+        }
+
+        //pc.printf("Received: %s length:%d\r\n", data, ((int)len)-10);
+    }
+    return ((int)len)-10;
+}
+
+/**
+* Send data to another MRF24J40.
+*
+* @param data The string to send
+* @param maxLength The length of the data to send.
+*                  If you are sending a null-terminated string you can pass strlen(data)+1
+*/
+void rf_send(char *data, uint8_t len)
+{
+    //We need to prepend the message with a valid ZigBee header
+    uint8_t header[8]= {1, 8, 0, 0xA1, 0xB2, 0xC3, 0xD4, 0x00};
+    uint8_t *send_buf = (uint8_t *) malloc( sizeof(uint8_t) * (len+8) );
+
+    for(uint8_t i = 0; i < len+8; i++) {
+        //prepend the 8-byte header
+        send_buf[i] = (i<8) ? header[i] : data[i-8];
+    }
+    //pc.printf("Sent: %s\r\n", send_buf+8);
+
+    mrf.Send(send_buf, len+8);
+    free(send_buf);
+}
+
+int main() {
+    int nodes = 6;
+    char buffer[128];
+    while(1) {
+       pc.printf("Select operation: \r\n");
+       pc.printf("1) get node list\r\n");
+       pc.printf("2) Update data rates\r\n");
+       pc.gets(buffer,1);
+       switch (buffer[0]) {
+           case '1':
+           
+           for(int i=0;i<nodes;i++)
+           {
+               pc.printf("Node %d Neighbors:\r\n");
+               for (int j=0;j<neighbors[i][0];j++)
+               {
+                   pc.printf("Node %d: %d cycles\r\n",neighbors[i][j],cycles[i][j]);
+               }
+            }
+            break;
+            case '2':
+            pc.printf("How many seconds between updates? ");
+            pc.gets(buffer,2);
+            int secs = atoi(buffer);
+            //build data packet
+            
+            //broadcast type
+            
+            //send data packet
+            
+            break;
+            default:
+            pc.printf("unknown command\r\n");
+            break;
+        }
+       
+       }
+}