Initial Arduino IDE based on Processing.

build/shared/lib/avrlib/pwmsw.h

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+/*! \file pwmsw.h \brief Software interrupt-driven multi-output PWM function library. */
+//*****************************************************************************
+//
+// File Name	: 'pwmsw.h'
+// Title		: Software interrupt-driven multi-output PWM function library
+// Author		: Pascal Stang - Copyright (C) 2002
+// Created		: 7/20/2002
+// Revised		: 7/31/2002
+// Version		: 0.1
+// Target MCU	: Atmel AVR Series
+// Editor Tabs	: 4
+//
+// WARNING: this PWM library does not work perfectly.  It has known and
+//	understood problems when two or more PWM outputs are set to nearly the
+//	same duty cycle.  IT MAY NOT BE WORTH USING!  YOU HAVE BEEN WARNED!
+//
+// This code is distributed under the GNU Public License
+//		which can be found at http://www.gnu.org/licenses/gpl.txt
+//
+//*****************************************************************************
+
+#ifndef PWMSW_H
+#define PWMSW_H
+
+#include "global.h"
+#include "timer.h"
+
+// constants/macros/typdefs
+typedef struct struct_SwPwmChannel
+{	
+	u08 port;		///< channel's hardware I/O port
+	u08 pin;		///< channel's hardware I/O pin
+	u16 duty;		///< active PWM duty setting
+	u16 setduty;	///< requested PWM duty setting
+} SwPwmChannelType;
+
+// number of PWM channels
+#define SWPWM_NUM_CHANNELS		3
+// define port 
+#define SWPWMPORT				PORTB
+#define SWPWMDDR				DDRB
+
+// functions
+
+//! initializes software PWM system
+void pwmswInit(u16 periodTics);
+
+//! turns off software PWM system
+void pwmswOff(void);
+
+//! set duty on channel
+void pwmswPWMSet(u08 channel, u16 duty);
+
+//! software PWM interrupt service routine
+void pwmswService(void);
+
+#endif