Diff: tasks.cpp

Revision:

13:ad04937ca366

Child:

14:ede0e7ed2745

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tasks.cpp	Tue Mar 07 22:32:06 2017 +0000
@@ -0,0 +1,156 @@
+#include "main.h"
+
+// Task 1: Measure input frequency
+void Task1(void)
+{
+    timer.reset();
+    
+    // If the input signal is low, wait for a rising edge to start counting
+    if (FqIn == 0)
+    {
+        while(FqIn == 0)
+            wait_us(SampFreq);
+        timer.start();      // Start timer
+        while(FqIn == 1)    // Keep counting as long as signal is high
+            wait_us(SampFreq);
+    }
+    
+    // If the input signal is high, wait for a falling edge to start counting
+    else if (FqIn == 1)
+    {
+        while(FqIn == 1)
+            wait_us(SampFreq);
+        timer.start();      // Start timer
+        while(FqIn == 0)    // Keep counting as long as signal is high
+            wait_us(SampFreq);
+    }
+        
+    timer.stop();               // Stop counting when signal changes
+    period = timer.read()*2; // Convert the time into a period
+    freq = 1000000/period;      // Convert the period into a frequency
+    
+    lcd->locate(1,0);
+    lcd->printf("F: %d", timer.read());
+    
+    return;
+}
+
+
+////////////////////////////////////////////////////////////////////////////////
+//
+// Read Digital input switch
+//
+void Task2(void)
+{
+    if (DSIn == 1) 
+        switch_state = 1;
+    else if (DSIn == 0)
+        switch_state = 0;
+    else
+        switch_state = 0;
+       // switch_state = DSIn == 1 ? 1: 0;     
+    return;    
+}
+
+
+////////////////////////////////////////////////////////////////////////////////
+//
+// Output watchdog timer pulse
+//
+void Task3(void)
+{
+    WD_pulse = 1;       // Pulse High
+    wait_us(WD);        // Leave high for specified length
+    WD_pulse = 0;
+    return;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+//
+// Read and filter 2 analogue inputs
+// 3.3V max
+// 
+void Task4(void)
+{ 
+    A1_val = 0;
+    A2_val = 0;
+
+    for(int i=0; i<3; i++)
+    {
+        A1_val = A1_val + A1_val + (A1_in * 3.3);
+        A2_val = A2_val + A2_val + (A2_in * 3.3);
+    }
+    
+    A1_val = (A1_val / 3);
+    A2_val = (A2_val / 3);
+    
+    return;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+//
+// Display Frequency, digital and filterd analogue values on LCD 
+// 
+void Task5(void)
+{
+    lcd->cls();
+    lcd->locate(0,0);
+    //lcd->printf("F%d S%d% A1d% A2d",freq,switch_state,A1_val,A2_val); 
+    lcd->printf("F%d",freq);
+    //lcd->printf("test");
+    
+    return;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+//
+// Error check
+// If switch_1 is ON & (average_analogue_in_1 > average_analogue_in_2) error code 3
+// Else error code 0
+// 
+void Task6(void)
+{/*
+    if(switch_state == 1 && (A1_val > A2_val))
+        error_code = 3;
+    else
+        error_code = 0;*/
+    
+    error_code++;
+        
+    //lcd->cls();
+    lcd->locate(1,0);
+    lcd->printf("Error: %d", error_code);
+    
+    wait_us(100);
+    return;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+//
+// Log frequency, digital and filtered analogue values to uSD
+// 
+void Task7(void)
+{
+    logcount++;
+    fprintf(fp,"Log: %d,Freq: %dHz,Digital_In: %d,Analogue_1: %d,Analogue_2: %d\n",logcount,freq,switch_state,A1_val,A2_val); 
+    
+    return;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+//
+// Shutdown on switch 
+// 
+/*void Task8()
+{
+    if(DS_sIn == 1)
+    {
+        tick.detach();
+        fprintf(fp, "\nTask 5 took %dms to complete\n", T5.read_ms());
+        fprintf(fp, "\nCyclic Executive stopped\n");
+        fclose(fp);
+    }
+    else{
+    }
+}
+*/