Ekraanitäie mõõtmise režiim, sakkide näitamine, peatamise nupp

scope.ino

-#define PIN_BUTTON_1 5
-#define PIN_BUTTON_2 4
-#define PIN_BUTTON_3 3
-#define PIN_BUTTON_4 2
+#define PIN_BUTTON_1 5 // BUTTON_RANGE_DN
+#define PIN_BUTTON_2 4 // BUTTON_RANGE_UP
+#define PIN_BUTTON_3 3 // BUTTON_FREQ
+#define PIN_BUTTON_4 2 // BUTTON_SHUTDOWN
 #define PIN_ADC 7 // A7
 
 #define BUTTON_RANGE_DN 0
 #define BUTTON_RANGE_UP 1
 #define BUTTON_FREQ 2 // Change frequency
-#define BUTTON_RUNSTOP 3
+#define BUTTON_SHUTDOWN 3
 
 #define PERIOD_10MS 0
 #define PERIOD_1MS 1
@@ -16,22 +16,36 @@
 #define PERIOD_100MS 4
 #define PERIOD_1S 5
 
+/* Configuration options */
 // Cursor values in format xx.x
 #define CURSOR_1 "5.0"
 #define CURSOR_2 "0.0"
+// Uncomment to run in oneshot mode
+//#define ONESHOT_MODE
+// Period to measure in
+#define ONESHOT_PERIOD PERIOD_1MS
+// How many points to measure before stopping (Serial Monitor display is 49 points wide)
+#define ONESHOT_POINTS 49
 
 // https://www.gammon.com.au/adc
 
-// Globals
+/* Globals */
 char G_PrintfBuf[32];
 char G_CursorBuf[5+1+5+1+1];
 char G_MeasureFreq;
+char G_TimeCounter;
+#define TIME_L_VALUE '0'
+#define TIME_H_VALUE "0.5"
+#ifdef ONESHOT_MODE
+int G_OneshotPoints;
+#endif
 // ReadButton globals
 unsigned long G_LastDebounceTime[4];
 int G_ButtonState[4];
 int G_PrevButtonState[4];
 #define DEBOUNCE_DELAY_MS 25
-// Flash data
+
+/* Flash data */
 extern const char FLASH_VoltageTable[1024 * 3] PROGMEM;
 
 byte ReadButton(int Button)  
@@ -53,6 +67,21 @@ byte ReadButton(int Button)
     return 0;
 }
 
+// Restore peripherals to default state and stop the program
+void Stop()
+{
+    TCCR1A = 0;
+    TCCR1B = 0; // Stop the timer
+    Serial.end();
+    Serial.begin(9600);
+    ADCSRA = bit(ADEN);
+    ADCSRA |= bit(ADPS2) | bit(ADPS1) | bit(ADPS0); // Prescaler 128
+    ADMUX = bit(REFS0) | PIN_ADC;
+    ADCSRB = bit(ADTS0);
+
+    for(;;) {}
+}
+
 // Error occured, light the onboard LED and stop the program
 void Error()
 {
@@ -141,9 +170,23 @@ ISR(ADC_vect)
     Serial.write('.');
     Serial.write(pgm_read_word_near(FLASH_VoltageTable + P + 1));
     Serial.write(pgm_read_word_near(FLASH_VoltageTable + P + 2));
+    if(G_MeasureFreq != PERIOD_100US)
+    {
+        Serial.write('\t');
+        G_TimeCounter--;
+        if(G_TimeCounter == 0)
+        {
+            G_TimeCounter = 10;
+            Serial.write(TIME_H_VALUE);
+        }
+        else Serial.write(TIME_L_VALUE);
+    }
     Serial.write('\r');
     Serial.write('\n');
-
+#ifdef ONESHOT_MODE
+    G_OneshotPoints++;
+    if(G_OneshotPoints == ONESHOT_POINTS + 1) Stop();
+#endif
     //Serial.println(micros() - tstart);
 } 
 
@@ -158,15 +201,22 @@ void setup()
     pinMode(PIN_BUTTON_4, INPUT_PULLUP);
 
     Serial.begin(2000000);
-
+#ifndef ONESHOT_MODE
     SetTimerPeriod(PERIOD_10MS);
     G_MeasureFreq = PERIOD_10MS;
+#else
+    SetTimerPeriod(ONESHOT_PERIOD);
+    G_MeasureFreq = ONESHOT_PERIOD;
+    G_OneshotPoints = 0;
+#endif
     InitADC();
 
     for(int i = 0; i < 4; i++) G_LastDebounceTime[i] = 0;
     for(int i = 0; i < 4; i++) G_PrevButtonState[i] = HIGH;
 
     sprintf(G_CursorBuf, "%s\t%s\t", CURSOR_1, CURSOR_2); // Precalculate the cursor string
+
+    G_TimeCounter = 10;
 }
 
 int lstate = LOW;
@@ -189,15 +239,12 @@ void loop()
     if(ReadButton(BUTTON_FREQ) == 1)
     {
         G_MeasureFreq++;
-        if(G_MeasureFreq == PERIOD_10US + 1) G_MeasureFreq = PERIOD_10MS;
-        //if(G_MeasureFreq == PERIOD_1S + 1) G_MeasureFreq = PERIOD_10MS;
+        if(G_MeasureFreq == PERIOD_100US + 1) G_MeasureFreq = PERIOD_10MS;
         SetTimerPeriod(G_MeasureFreq);
     }
 
-    if(ReadButton(BUTTON_RUNSTOP) == 1)
+    if(ReadButton(BUTTON_SHUTDOWN) == 1)
     {
-        if(lstate == LOW) lstate = HIGH;
-        else lstate = LOW;
-        digitalWrite(LED_BUILTIN, lstate);
+        Stop();
     }
 }