Diff: main2.cpp

Revision:

2:b150c439e583

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main2.cpp	Thu Apr 26 22:35:44 2018 +0000
@@ -0,0 +1,74 @@
+#include "mbed.h"
+#include "uLCD_4DGL.h"
+#include "rtos.h"
+ 
+Serial pc(USBTX, USBRX); 
+Ticker t;
+InterruptIn risingEdge(p8); //halleffect sensor
+uLCD_4DGL uLCD(p9,p10,p11); // serial tx, serial rx, reset pin;
+AnalogIn batt(p19);
+
+ 
+volatile int count = 0.0;
+volatile float vel = 0.0;
+float pbatt = 0.0;
+ 
+void pulses() //hall effect triggers
+{
+    count++;
+}
+void halleffect() //calculates velocity
+{
+    float temp = count;
+    count = 0;
+    temp = temp/4; // four magnets in trigger - gives rps
+    vel = temp * 3.14159 * 0.035 * 2 *60 * 60 * 0.000621371 ; // radius of .035m  
+}
+
+void display(void const *argument) //update battery voltage display and velocity
+{
+    while(1)
+    {
+    float battAdj = float(batt * 3.3 * 3.968);
+    uLCD.color(WHITE);
+    uLCD.locate(2,2);
+    uLCD.printf("%3.1f", vel*0.67);
+    uLCD.locate(2,3);
+    uLCD.printf("MPH");
+    //if (battAdj == pbatt) break;
+    if (battAdj >= 11) {
+        uLCD.filled_rectangle(6,99,29,16,GREEN);
+        pbatt = battAdj;
+    }
+    else if ((battAdj >= 9)&&(battAdj < 11)) {
+        uLCD.filled_rectangle(6,99,29,16,WHITE);
+        uLCD.filled_rectangle(6,99,29,45,(GREEN+RED));
+        pbatt = battAdj;
+    }
+    else if (battAdj < 9) {
+        uLCD.filled_rectangle(6,99,29,16,WHITE);
+        uLCD.filled_rectangle(6,99,29,70,RED);
+        pbatt = battAdj;
+    }    
+    Thread::wait(1000);
+    }
+
+}
+ 
+int main() 
+{
+    uLCD.cls();
+    uLCD.baudrate(3000000); //jack up baud rate to max
+    uLCD.background_color(BLACK);
+    uLCD.cls();
+    uLCD.text_width(3.5); 
+    uLCD.text_height(3.5);
+    uLCD.filled_rectangle(5,100,30,15,WHITE);
+    uLCD.filled_rectangle(12,15,22,10,WHITE);
+    risingEdge.rise(&pulses); //interrupt routine
+    t.attach(&halleffect, 1.0); //calculate velocity every second
+    Thread displaythread(display); //update display
+    while(1) {
+    
+    }
+}
\ No newline at end of file