Diff: main.cpp

Revision:

0:6d1742703713

Child:

1:75827d765e34

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Tue Feb 13 13:30:08 2018 +0000
@@ -0,0 +1,192 @@
+#include "mbed.h"
+#include <string>
+#include "max7219.h"
+#include "QEI.h"
+
+#define TGATE   1
+#define MAX_VAL 999999
+
+InterruptIn TRIG1 (D3);    // Counter 1 trigger
+InterruptIn TRIG2 (D6);    // Counter 2 trigger
+PwmOut      PWM   (D10);   // PWM output
+DigitalOut  BUZZ  (D2);    // Buzzer
+DigitalOut  AUX   (D2);    // AUX control for GPS module
+DigitalIn   QEIPB (D9);    // Quadrature encoder pushbutton
+
+QEI Wheel(D11, D12, NC, 16);    // Quadrature encoder
+I2C i2c(D4, D5);    // I2C port
+Ticker Sec_Beat;
+Max7219 Display(A6, A5, A4, A3); //LED diplay driver (MOSI, MISO, SCK, SS)
+Serial PC(USBTX, USBRX);    // Virtual COM via USB
+Serial GPS(D1, D0);
+
+// Global variables
+uint8_t Digit_Disp[8];
+uint16_t Stream;
+
+time_t seconds;     // RTC timestamp
+
+unsigned int value = 0;
+uint32_t    CNT1, CNT2;   // pulse counters
+uint8_t gate;
+char Text[40]="";
+
+// ------------------- Prototypes -----------------------
+void RefreshDisplay(void);
+void Update(void);
+void CNT1_count(void);
+void CNT2_count(void);
+
+
+//==============================================================================
+//==============================================================================
+
+int main() 
+{
+    
+    PC.baud(115200);
+    PC.printf("Connected...\n");
+    GPS.baud(9600);
+    
+    max7219_configuration_t cfg = {
+         .device_number = 1,            
+         .decode_mode = 0xFF,
+         .intensity = Max7219::MAX7219_INTENSITY_F, // max brightness
+         .scan_limit = Max7219::MAX7219_SCAN_6      // 6 digits
+     };
+
+     Display.init_device(cfg);      
+     Display.enable_device(1);
+     Display.device_all_on(1);
+
+    set_time(1256729737); // Set time to Wed, 28 Oct 2009 11:35:37
+ 
+    //RTC::attach(&Update, RTC::Second);
+    //RTC::detach(RTC::Second);
+    
+    Wheel.reset();        // clear encoder    
+    
+    PWM.period_ms(3);         // set LCD backlight PWM
+    PWM.write(0.8);      
+    /*
+    BUZZ.period_ms(30);         // set LCD backlight PWM
+    BUZZ.write(0.2);  
+    */
+    Sec_Beat.attach(&Update, 1);
+
+    // enable & attach interrupts on rising edge of digital inputs
+    TRIG1.rise(&CNT1_count);     
+    TRIG2.rise(&CNT2_count);     
+    
+          
+    while(1) 
+    {
+        // do nothing
+                            
+    }
+}
+
+
+// ------------- Refresh Display ------------------------
+
+void RefreshDisplay(void)
+{
+    Display.write_digit(1, 1, Digit_Disp[6]);   // device, digit, data
+    Display.write_digit(1, 2, Digit_Disp[5]);   // device, digit, data
+    Display.write_digit(1, 3, Digit_Disp[4]);   // device, digit, data
+    Display.write_digit(1, 4, Digit_Disp[3]);   // device, digit, data
+    Display.write_digit(1, 5, Digit_Disp[2]);   // device, digit, data
+    Display.write_digit(1, 6, Digit_Disp[1]);   // device, digit, data
+    Display.write_digit(1, 7, Digit_Disp[0]);   // device, digit, data
+        
+  return;
+}
+
+
+
+//==============================================================================
+
+void Update()   // refresh display data
+{
+    char TextString[9];
+    gate++;
+    
+    if(QEIPB)
+        AUX = 1;
+    else
+        AUX = 0;
+    
+    if(gate==TGATE)
+    {
+        //value = (int)(CNT1/TGATE);
+        value = int(Wheel.getPulses());
+        
+        if(value<MAX_VAL)
+        {
+            snprintf(TextString, 8, "%7d", value);   // int to string
+            seconds = time(NULL); 
+            strftime(Text, 50, "%d-%b-%Y  %H:%M:%S", localtime(&seconds));
+            PC.printf("RTC: %s, CNT1: %7d CNT2: %7d\n",Text, CNT1, CNT2);
+        
+            for(uint8_t i=0; i<7; i++)
+            {   
+                if(TextString[i]==' ')  // blanking empty digits
+                    TextString[i]= 0xFF;
+                else
+                    TextString[i]=TextString[i]-'0';
+                
+                Digit_Disp[i] = TextString[i];   
+                  
+            }         
+        }
+        
+        else
+        {
+            for(uint8_t i=0; i<7; i++)  // all minus
+                Digit_Disp[i] = 10;   
+        }    
+        
+        RefreshDisplay(); 
+    
+        CNT1=0;
+        CNT2=0;                
+        gate = 0;
+    }
+    else
+    {
+       value = TGATE - gate;
+       snprintf(TextString, 8, "%7d", value);
+        for(uint8_t i=6; i<8; i++)
+        {   
+            if(TextString[i]==' ')  // blanking empty digits
+                TextString[i]= 0xFF;
+            else
+                TextString[i]=TextString[i]-'0';        
+        } 
+                    
+        //Digit_Disp[1] = TextString[6];         
+        //Digit_Disp[0] = TextString[7];         
+                
+       RefreshDisplay(); 
+    }
+    
+
+    return;
+}
+
+//---------------------------------------------------------------------------
+void CNT1_count(void)
+{                       //function to call upon interrupt
+    CNT1++;                      //increment counter object   
+    return; 
+}
+
+
+//---------------------------------------------------------------------------
+void CNT2_count(void)
+{                       //function to call upon interrupt
+    CNT2++;                      //increment counter object    
+    return; 
+}
+
+