2 files changed, 101 insertions, 0 deletions
diff --git a/2.3-1/src/c/hardware/avr/pwm/u8AVRPWMSetDutys.c b/2.3-1/src/c/hardware/avr/pwm/u8AVRPWMSetDutys.c
new file mode 100644
index 00000000..adb186a6
--- /dev/null
+++ b/2.3-1/src/c/hardware/avr/pwm/u8AVRPWMSetDutys.c
@@ -0,0 +1,39 @@
+// Function to set duty for PWM of AVR
+//
+// Calling Sequence
+//     u8AVRPWMSetDutys(uint8 timer, uint8 duty)
+//
+// Parameters
+//     timer: timer to be used for PWM generation (0,1,2)
+//     duty: duty for PWM waveform (0-100)
+//         
+// Description
+//	   This function sets duty for PWM waveform according to given parameters.
+//
+// Examples
+//     u8AVRPWMSetDutys(0,10)   //Sets 10% duty for timer 0 output.
+//
+// Authors
+//     Siddhesh Wani
+//
+
+#include "AVRPeripheralPWM.h"
+
+uint8 u8AVRPWMSetDutys(uint8 timer, uint8 duty)
+{
+	uint8 duty_value=0;
+
+	switch(timer)
+	{
+		case 0:
+				duty_value = (uint8)(((uint16)(duty * 0xff))/100);
+				OCR0 = duty_value;
+				break;
+		case 2:
+				duty_value = (uint8)(((uint16)(duty * 0xff))/100);
+				OCR2 = duty_value;
+				break;
+	}
+  
+
+}
diff --git a/2.3-1/src/c/hardware/avr/pwm/u8AVRPWMSetups.c b/2.3-1/src/c/hardware/avr/pwm/u8AVRPWMSetups.c
new file mode 100644
index 00000000..5110d812
--- /dev/null
+++ b/2.3-1/src/c/hardware/avr/pwm/u8AVRPWMSetups.c
@@ -0,0 +1,62 @@
+// Function to initialise PWM of AVR
+//
+// Calling Sequence
+//     u8AVRPWMSetups(uint8 timer, uint8 prescalar, uint8 waveform_mode, uint8 output_mode)
+//
+// Parameters
+//     timer: timer to be used for PWM generation (0,1,2)
+//     prescalar: prescalar to be used for generating PWM waveform (0-7)
+//     waveform_mode: decides type of waveform generation
+//              0 -> Normal mode
+//              1 -> Phase correct mode
+//              2 -> CTC mode
+//              3 -> Fase PWM mode
+//	   output_mode: decides the compare output mode. (0-3)
+//					behaviour of the output is different for different inputs 
+//					depending upon 'waveform_mode' chosen. 
+//     ***Refer datasheet for more description about above modes
+//              
+// Description
+//     This function initialises PWM of AVR with given parameters. 'timer' 
+//     decides which of the three (0,1,2) timers available to be used. The 
+//     'prescalar' is needed for deciding PWM clock. Select appropriate prescalar
+// 	   depending on MCU clock. Choose required pwmmode using 'waveform_generation'
+//     and 'output_mode'. Please refer datasheet for more description of 'wafefom_mode'
+//     and 'output mode'.
+// Examples
+//     AVRPWMSetup(0,1,2,2)
+//
+// Authors
+//     Siddhesh Wani
+//
+
+#include "AVRPeripheralPWM.h"
+
+
+uint8 u8AVRPWMSetups(uint8 timer, uint8 prescalar, uint8 waveform_mode, uint8 output_mode)
+{
+	switch(timer)
+	{
+		case 0:
+				TCCR0|= (prescalar & 0x07);  //Select clock source
+				//Select waveform generation mode
+				TCCR0|= ((waveform_mode & 0x04) << 4);  
+				//Select compare output mode
+				TCCR0 |= ((output_mode & 0x01) << 3);  //WGM0
+				TCCR0 |= ((output_mode & 0x02) << 6);  //WGM1
+				break;
+		case 1:
+				break;
+		case 2:
+				TCCR2|= (prescalar & 0x07);  //Select clock source
+				//Select waveform generation mode
+				TCCR2|= ((waveform_mode & 0x04) << 4);  
+				//Select compare output mode
+				TCCR2 |= ((output_mode & 0x01) << 3);  //WGM0
+				TCCR2 |= ((output_mode & 0x02) << 6);  //WGM1
+				break;
+	}	    
+
+	return 0;
+}
+