Diff: pwm.cpp

Revision:

7:a08b726d5566

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/pwm.cpp	Mon Dec 09 22:07:15 2019 +0000
@@ -0,0 +1,90 @@
+#include "mbed.h"
+#include "TextLCD.h"
+#include "DS1820.h"
+
+
+
+DigitalOut myled(LED1);  // Uporabimo led na vezju (D13)
+DigitalOut rw(A6);
+DS1820 ds1820(PB_4);     // Pin kamor je priključen DS1820
+DigitalOut my_pwm(D9);   // IO used by pwm_io function
+TextLCD lcd(A7, A5, A4, A3, A2, A1, TextLCD::LCD20x4); // rs, e, d4-d7 TextLCD::LCD20x4
+
+Timeout timer;
+
+
+
+int on_delay = 0;
+int off_delay = 0;
+
+void toggleOff(void);   //??
+
+void toggleOn(void) {  // Funkcija 
+    my_pwm = 1;
+    timer.attach_us(toggleOff, on_delay);
+}
+
+void toggleOff(void) {
+    my_pwm = 0;
+    timer.attach_us(toggleOn, off_delay);
+}
+
+// p_us = signal period in micro_seconds
+// dc   = signal duty-cycle (0.0 to 1.0)
+void pwm_io(int p_us, float dc) {
+    timer.detach();
+    if ((p_us == 0) || (dc == 0)) {
+        my_pwm = 0;
+        return;
+    }
+    if (dc >= 1) {
+        my_pwm = 1;
+        return;
+    }
+    on_delay = (int)(p_us * dc);
+    off_delay = p_us - on_delay;
+    toggleOn();
+}
+
+int main()
+{
+
+//  double moc;
+    int i;
+    rw = 0;
+//  moc = 25;
+    int PWM_F=100;                                           //delay v us 20us=50KHz  1000=1000Hz, če je manj ne dela več LCD
+    float PWM_duty=0.25;
+    
+    while (true) {
+        for (i=0; i<11; i=i+1) {    
+            if (i==10){ i=0;} 
+         
+        ds1820.begin();              // Inicializacia DS senzorja če ni specifičen senzor
+        ds1820.startConversion();
+        lcd.locate(0,0);                                             // Lokacija: 1 vrstica 1 znak na LCD-ju
+        lcd.printf("Stevilka: %i", i);                               // števec
+        lcd.locate(0,1);                                             // Lokacija: 2 vrstica 1 znak na LCD-ju
+//      lcd.printf("Moc sevanja: %.2fW", moc);                       // Na LCD-ju prikaže vrednost moči
+        lcd.printf("PWMF=%i",PWM_F);                       // Na LCD-ju izpiše vrednost spremenljivke PWM_F
+        lcd.locate(0,2);
+        lcd.printf("PWMDuty=%1.2f",PWM_duty);             // Na LCD-ju izpiše vrednost spremenljivke PWM_duty 3.1
+        lcd.locate(0,3);
+        lcd.printf("Temp: %3.1foC\r\n", ds1820.read());             // Izpiše temp
+        
+ 
+        PWM_duty=ds1820.read()/100;
+        pwm_io(PWM_F, PWM_duty);                           // 20ms - 25%          
+        myled = !myled;
+/*
+        myled = 1; // LED is ON
+        wait(0.1); // 100 ms
+        myled = 0; // LED is OFF
+        wait(0.1); // 100ms 
+*/
+   }
+ //           wait(0.1);  // Počakaj 1s
+//            lcd.cls(); // Zbriše ekran
+//            pwm_io(PWM_F, PWM_duty);                           // 20ms - 25%      
+    }
+}
\ No newline at end of file