Diff: main.cpp

Revision:

0:d4b08f5874fc

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Thu Nov 24 15:36:06 2016 +0000
@@ -0,0 +1,98 @@
+#include "mbed.h"
+#include "SerialBase.h"
+#include "Watchdog.h"
+
+Serial pc(USBTX,USBRX);
+Serial rf(D1, NC, 4800);
+DigitalOut myled(LED1);
+AnalogIn   ain(A0);
+Ticker led_rf_ticker;
+Ticker adc_ticker;
+Timer t;
+
+int adc_data[1024];
+int adc_data_counter = 0;
+int current_threshold = 3000;
+int time_threshold = 30;
+bool data_ready = false;
+bool rf_32Asafe = false;
+
+Watchdog wd;
+
+void led_rf_blinky (void)
+{
+    myled = !myled;
+    if(rf_32Asafe == true)
+    {
+        rf.printf("HHHHHHHH");
+        pc.printf("Transmit: Charge at 32A\r\n");
+        
+    }
+    else
+    {
+        rf.printf("LLLLLLLL");
+        pc.printf("Transmit: Charge at 16A\r\n");
+    }
+}
+
+void read_adc (void)
+{
+    if (adc_data_counter < 1024)
+    {
+        adc_data[adc_data_counter] = ain.read_u16();
+        adc_data_counter+=1;
+    }
+    else
+    {
+        data_ready = true;
+    }
+}    
+   
+int main() 
+{
+    if (wd.WatchdogCausedReset()) pc.printf("Watchdog caused reset\r\n");
+    wd.Configure(5.0); 
+    float sum;
+    int i;
+    led_rf_ticker.attach(&led_rf_blinky, 0.2);
+    adc_ticker.attach_us(&read_adc, 2000);
+    t.reset();
+    
+    while(1) 
+    {
+        wd.Service();
+        if (data_ready == true)
+        {   
+            sum = 0.0;
+            for(i=0; i<1024; i++)
+            {
+                sum = sum + adc_data[i];
+            }
+            sum = sum / 1024;
+            
+            if(sum < current_threshold && t.read()== 0)
+            {
+                t.reset();
+                t.start();
+                rf_32Asafe = false;
+            }
+            
+            if(sum < current_threshold && t.read() > time_threshold)
+            {
+                t.stop();
+                rf_32Asafe = true;
+                while(1){
+                    }
+            }
+            
+            if(sum > current_threshold)
+            {
+                t.reset();
+                rf_32Asafe = false;
+            } 
+                
+            data_ready = false;
+            adc_data_counter = 0;               
+        }      
+    }
+}