Diff: main.cpp

Revision:

7:9f975e00600c

Parent:

6:05201ecabb95

Child:

8:5e70ca85fcb1

Child:

10:f48cc6be5ae8

--- a/main.cpp	Sun Sep 02 17:25:48 2018 -0700
+++ b/main.cpp	Sun Sep 02 17:47:14 2018 -0700
@@ -38,6 +38,9 @@
 #define CNT2    0x20
 #define HV      0x40
 #define MENU    0x80
+uint8_t LED_statuses [CPM, CPS, PLS, VOLTS, CNT1, CNT2, HV, MENU];
+uint8_t LED_status = CPM;
+uint8_t LED_status_index = 0;
 
 // definitions of the input/outputs (pins)
 DigitalOut  AUX   (D2);    // AUX control for GPS module
@@ -60,7 +63,14 @@
 DigitalOut led1(LED1);
 
 // definitions of peripherals and devices
+
+// QEI class supports the mode wheel.  In its most basic function it will tell
+// us which direction the wheel is moving (right or left) so that we can
+// use it to select the current mode.
 QEI     Wheel(D12, D11, NC, 16);    // Quadrature encoder
+int WheelCurrent = 0;
+int WheelPrevious = 0;
+
 I2C     i2c(D4, D5);                // I2C port
 Ticker  Sec_Beat;                // 1 second ticker
 Serial  PC(USBTX, USBRX);        // Virtual COM via USB (PC connection)
@@ -122,9 +132,6 @@
     LEDs_write(0x00);   // initialize LEDs (CPM and CNT1 on)
     Beep(); // initial beep    
     
-    uint8_t LED_status = CNT1 | CPS;
-    LEDs_write(LED_status);
-        
     // set the 1 sec ticker to periodically call the Update() routine
     // NOTE: this is also the 1-sec time base for counters. A better approach
     // would replace the ticker with an interrupt from the RTC (to be implemented)
@@ -150,6 +157,8 @@
 
 void Update()   
 {               
+    LEDs_write(LED_statuses[LED_status_index]);
+        
     ADC_val = KEYB.read();  // read voltage from keyboard
     PC.printf("\nADC: %.02f", ADC_val); 
     if (   (ADC_val<0.1)    // START/STOP pushbutton pressed
@@ -213,9 +222,15 @@
     strftime(Text, 50, "%H:%M:%S", localtime(&seconds));
     PC.printf(" RTC: %s, CNT1: %7d CNT2: %7d",Text, Count1, Count2);
 
-    value = int(Wheel.getPulses());
-    PC.printf(" started %d", value);
-
+    WheelCurrent = int(Wheel.getPulses());
+    PC.printf(" started %d", WheelCurrent);
+    if (WheelCurrent > WheelPrevious)
+       LED_status_index++ | sizeof(LED_statuses);
+    else
+       if (WheelCurrent < WheelPrevious)
+          LED_status_index-- | sizeof(LED_statuses);
+    WheelPrevious = WheelCurrent;
+    
     return;
 }