pwma_example1.c File Reference

Example to illustrate the basic PWMA Function of generating waveform to two different PWMA channels.

Copyright (c) 2012-2018 Microchip Technology Inc. and its subsidiaries.

#include <asf.h>

Macros
Example Configuration
#define	EXAMPLE_PWMA_GCLK_ID   AVR32_SCIF_GCLK_PWMA
	GCLK number for PWMA Module. More...
#define	EXAMPLE_PWMA_GCLK_FREQUENCY   48000000
	Output frequency of the PWMA Generic clock. More...
#define	EXAMPLE_PWMA_GCLK_SOURCE   AVR32_SCIF_GC_USES_CLK_PBA
	Source for PWMA Generic clock. More...
#define	EXAMPLE_PWMA_OUTPUT_FREQUENCY   2000000
	PWMA output frequency. More...
#define	EXAMPLE_PWMA_CHANNEL_ID1   11
	Channel index number of PWMA Module. More...
#define	EXAMPLE_PWMA_PIN1   AVR32_PWMA_11_PIN
	Corresponding GPIO pin number of the EXAMPLE_PWMA_CHANNEL_ID1. More...
#define	EXAMPLE_PWMA_FUNCTION1   AVR32_PWMA_11_FUNCTION
	Corresponding pin function number of EXAMPLE_PWMA_PIN1. More...
#define	EXAMPLE_PWMA_CHANNEL_ID2   27
	Channel index number of PWMA Module. More...
#define	EXAMPLE_PWMA_PIN2   AVR32_PWMA_27_PIN
	Corresponding GPIO pin number of the EXAMPLE_PWMA_CHANNEL_ID2. More...
#define	EXAMPLE_PWMA_FUNCTION2   AVR32_PWMA_27_FUNCTION
	Corresponding pin function number of EXAMPLE_PWMA_PIN2. More...
#define	ERROR_LED   LED2_GPIO
	LED Shows the status of the PWMA configuration. More...
#define	PWMA_SPREAD   10
	SPREAD value to be loaded to the PWMA Module. More...
#define	PWMA_INTERRUPT_PRIORITY   0
	Priority level of the PWMA interrupt. More...

Functions
	ISR (tofl_irq, AVR32_PWMA_IRQ_GROUP, PWMA_INTERRUPT_PRIORITY)
	TOFL ISR Routine. More...
int	main (void)
	Main Application Routine -Initialize the system clocks -Configure and Enable the PWMA Generic clock -Configure and Enable the PWMA Module -Load Duty cycle value using Interlinked multi-value mode -Register and Enable the Interrupt -Enter into sleep mode . More...

Variables
volatile avr32_pwma_t *	pwma = &AVR32_PWMA
	Global variable to Store the PWMA module address. More...

#define ERROR_LED   LED2_GPIO

LED Shows the status of the PWMA configuration.

Referenced by main(), and pwma_init().

#define EXAMPLE_PWMA_CHANNEL_ID1   11

Channel index number of PWMA Module.

Referenced by main().

#define EXAMPLE_PWMA_CHANNEL_ID2   27

Channel index number of PWMA Module.

Referenced by main().

#define EXAMPLE_PWMA_FUNCTION1   AVR32_PWMA_11_FUNCTION

Corresponding pin function number of EXAMPLE_PWMA_PIN1.

Referenced by main().

#define EXAMPLE_PWMA_FUNCTION2   AVR32_PWMA_27_FUNCTION

Corresponding pin function number of EXAMPLE_PWMA_PIN2.

Referenced by main().

#define EXAMPLE_PWMA_GCLK_FREQUENCY   48000000

Output frequency of the PWMA Generic clock.

Referenced by init_pwm(), main(), and pwma_init().

#define EXAMPLE_PWMA_GCLK_ID   AVR32_SCIF_GCLK_PWMA

GCLK number for PWMA Module.

Referenced by main(), and pwma_init().

#define EXAMPLE_PWMA_GCLK_SOURCE   AVR32_SCIF_GC_USES_CLK_PBA

Source for PWMA Generic clock.

Referenced by main(), and pwma_init().

#define EXAMPLE_PWMA_OUTPUT_FREQUENCY   2000000

PWMA output frequency.

Referenced by main(), and pwma_init().

#define EXAMPLE_PWMA_PIN1   AVR32_PWMA_11_PIN

Corresponding GPIO pin number of the EXAMPLE_PWMA_CHANNEL_ID1.

Referenced by main().

#define EXAMPLE_PWMA_PIN2   AVR32_PWMA_27_PIN

Corresponding GPIO pin number of the EXAMPLE_PWMA_CHANNEL_ID2.

Referenced by main().

#define PWMA_INTERRUPT_PRIORITY   0

Priority level of the PWMA interrupt.

Referenced by main().

#define PWMA_SPREAD   10

SPREAD value to be loaded to the PWMA Module.

Referenced by main().

ISR	(	tofl_irq	,
		AVR32_PWMA_IRQ_GROUP	,
		PWMA_INTERRUPT_PRIORITY
	)

TOFL ISR Routine.

Parameters

tofl_irq	ISR Routine name
AVR32_PWMA_IRQ_GROUP	Group under which the PWMA interrupt lies
PWMA_INTERRUPT_PRIORITY	Priority level of the interrupt

References pwma.

int main

(

void

)

Main Application Routine -Initialize the system clocks
-Configure and Enable the PWMA Generic clock
-Configure and Enable the PWMA Module
-Load Duty cycle value using Interlinked multi-value mode
-Register and Enable the Interrupt
-Enter into sleep mode
.

References cpu_irq_disable, cpu_irq_enable, delay_init, delay_ms, div_ceil, ERROR_LED, EXAMPLE_PWMA_CHANNEL_ID1, EXAMPLE_PWMA_CHANNEL_ID2, EXAMPLE_PWMA_FUNCTION1, EXAMPLE_PWMA_FUNCTION2, EXAMPLE_PWMA_GCLK_FREQUENCY, EXAMPLE_PWMA_GCLK_ID, EXAMPLE_PWMA_GCLK_SOURCE, EXAMPLE_PWMA_OUTPUT_FREQUENCY, EXAMPLE_PWMA_PIN1, EXAMPLE_PWMA_PIN2, FAIL, genclk_enable_config(), gpio_enable_module(), gpio_tgl_gpio_pin(), irq_initialize_vectors, irq_register_handler, pm_sleep(), pwma, pwma_config_enable(), PWMA_INTERRUPT_PRIORITY, pwma_set_multiple_values(), PWMA_SPREAD, sysclk_get_cpu_hz(), sysclk_get_pba_hz(), and sysclk_init().

volatile avr32_pwma_t* pwma = &AVR32_PWMA

Global variable to Store the PWMA module address.