Diff: DtPWM.h

Revision:

0:f4cf8380dbee

Child:

2:1ef7ff2f120e

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/DtPWM.h	Sat Mar 25 17:26:48 2017 +0000
@@ -0,0 +1,45 @@
+#include "mbed.h"
+
+#ifndef DTPWM_H
+#define DTPWM_H
+
+/** Library for fast and high resolution opposite PWM output with 
+  * controllable dead times
+  */
+  
+class DtPWM{
+public:
+    /**
+    * Create a dtPWM object connected to channel 2 and 4, optionally to LED 2&4
+    *
+    * @param led - false does not connect LEDs (default)
+    */
+    DtPWM(bool led = false);
+    ~DtPWM(); 
+    
+    /**
+    * Set the period, duty cycle, and dead time.
+    *
+    * @param p_us - period in micro seconds
+    * @param d - duty cycle from 0-1 as float
+    * @param dt_us - dead time between switching in micro seconds
+    */
+    void setDtPWM(double p_us, float d, double dt_us);
+    
+    /**
+    * Value for maximum duty cycle that fulfils minimum dead times 
+    */
+    float d_max;
+    
+    /**
+    * Fast way to change the duty cycle.
+    *
+    * @param d - duty cycle from 0-1 as float no checking is done in this function
+    */
+    void setD(float d);
+    
+private:
+    unsigned int p_tcks;        // clock ticks in period
+    unsigned int dt_tcks;       // dead time ticks
+};
+#endif
\ No newline at end of file