Diff: main.cpp

Revision:

0:7f0d0acde96b

diff -r 000000000000 -r 7f0d0acde96b main.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Tue Apr 30 19:35:08 2019 +0000
@@ -0,0 +1,109 @@
+#include "mbed.h"
+#include "monitor.h"
+
+Serial pc(USBTX, USBRX);
+Serial coordinator(p9, p10);
+
+xbee nodes[DEVS];
+//globals
+float data[DEVS][4][SAMPLES]; //array to hold all of the data for averaging
+float avgs[DEVS][4];  //array to hold averages
+uint16_t source; //source id of the node sending data 
+//most and least significant bytes of data
+uint8_t MSB;
+uint8_t LSB;
+int num_samples = 0;
+//functions 
+void check_nodes();
+void average();
+uint8_t error_check();
+
+int main() 
+{
+    //loop instantiates and ids all of the nodes in the network
+    for(int i=0; i<DEVS; i++)
+        nodes[i].id = i+1;
+    
+    //loop continually checks for data from the nodes
+    while(1) {
+        check_nodes();
+        if(num_samples==SAMPLES){
+            average();
+            if(error_check()){
+                //do something
+            }
+            num_samples = 0;
+            //wait(1);
+        }
+        num_samples++;          
+    }
+}
+
+//retrieves a data packet and parses it, then calls the functions to calculate 
+//the data
+void check_nodes(){
+    //check for the begining of the packet
+    if(coordinator.readable() && coordinator.getc()==0x7E){
+        //discard unecessary bytes from the packet
+        coordinator.getc(); //payload length is 2 bytes
+        coordinator.getc(); //this is always a constant so it is uneccesary
+        coordinator.getc(); //packet type (packets are always data type)
+        coordinator.getc();
+        //find the source node (-1 to adjust for indexing as coordinator
+        //is always node 0
+        
+        source = coordinator.getc() - 1;
+        //pc.printf("%d\r\n", source);
+        //discard more unecesary bytes
+        for(int i=0; i<5; i++)
+            coordinator.getc();
+        
+        //temperature
+        MSB = coordinator.getc();
+        LSB = coordinator.getc();
+        nodes[source].temp = get_temp(MSB, LSB);
+        data[source][0][num_samples] = nodes[source].temp;
+        
+        //voltage
+        MSB = coordinator.getc();
+        LSB = coordinator.getc();
+        nodes[source].volt = get_volt(MSB, LSB);
+        data[source][1][num_samples] = nodes[source].volt;
+        
+        //current
+        MSB = coordinator.getc();
+        LSB = coordinator.getc();
+        nodes[source].amps = get_amps(MSB, LSB);
+        data[source][2][num_samples] = nodes[source].amps;
+        
+        //vibrations
+        MSB = coordinator.getc();
+        LSB = coordinator.getc();
+        nodes[source].vibs = get_vibs(MSB, LSB);
+        data[source][3][num_samples] = nodes[source].vibs;
+        
+        if(DEBUG){
+            //print statements
+            pc.printf("TEMP %d: %0.1fC ", nodes[source].id, nodes[source].temp);
+            pc.printf("VOLT %d: %0.1fV ", nodes[source].id, nodes[source].volt);
+            pc.printf("AMPS %d: %0.1fmA ", nodes[source].id, nodes[source].amps);
+            pc.printf("VIBS %d: %0.1fB\r\n", nodes[source].id, nodes[source].vibs);
+        }
+  
+    } 
+}
+
+//calculates the averages of the data then sends them to the gui
+void average(){
+    for(int i=0; i<2; i++){
+        float sum = 0;
+        for(int j=0; j<SAMPLES; j++){
+            sum = sum + data[source][i][j];
+        }
+        avgs[source][i] = sum;
+    }
+}
+
+uint8_t error_check(){
+    return 0;
+}
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