wdt_example_sam4l.c File Reference

Watchdog Timer (WDT) example for SAM4L.

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

#include <asf.h>
#include "conf_example.h"

Macros
#define	BLINK_PERIOD   500
	LED blink time in millisecond. More...
#define	WDT_RESTART_PERIOD   2000
	Watchdog period in millisecond. More...

Functions
static void	configure_console (void)
	Configure serial console. More...
int	main (void)
static void	set_toggle_flag (void)
	Interrupt handler for EIC interrupt. More...
void	SysTick_Handler (void)
	Handler for System Tick interrupt. More...

Variables
volatile uint8_t	g_b_button_event = 0
	Push button event. More...
volatile bool	g_b_systick_event = false
	System Tick event flag. More...
volatile uint32_t	g_ul_ms_ticks = 0
	System tick increased by 1 every millisecond. More...
struct wdt_config	g_wdt_cfg
	WDT configuration. More...
struct wdt_dev_inst	g_wdt_inst
	WDT instance. More...

#define BLINK_PERIOD   500

LED blink time in millisecond.

Referenced by main().

#define WDT_RESTART_PERIOD   2000

Watchdog period in millisecond.

Referenced by main().

static void configure_console ( void  )

static

Configure serial console.

References uart_rs232_options::baudrate, and stdio_serial_init().

Referenced by main().

int main

(

void

)

References BLINK_PERIOD, board_init(), BOARD_NAME, configure_console(), eic_line_config::eic_async, EIC_ASYNCH_MODE, eic_line_config::eic_edge, EIC_EDGE_FALLING_EDGE, eic_enable(), eic_line_config::eic_filter, EIC_FILTER_DISABLED, eic_line_config::eic_level, EIC_LEVEL_LOW_LEVEL, eic_line_enable(), eic_line_set_callback(), eic_line_set_config(), eic_line_config::eic_mode, EIC_MODE_EDGE_TRIGGERED, EXAMPLE_LED_GPIO, g_b_button_event, g_b_systick_event, g_ul_ms_ticks, g_wdt_cfg, g_wdt_inst, ioport_toggle_pin_level(), set_toggle_flag(), sysclk_get_cpu_hz(), sysclk_init(), wdt_config::timeout_period, wdt_clear(), wdt_enable(), wdt_get_config_defaults(), wdt_init(), WDT_PERIOD_524288_CLK, and WDT_RESTART_PERIOD.

static void set_toggle_flag ( void  )

static

Interrupt handler for EIC interrupt.

References eic_line_clear_interrupt(), eic_line_interrupt_is_pending(), and g_b_button_event.

Referenced by main().

void SysTick_Handler

(

void

)

Handler for System Tick interrupt.

References g_b_systick_event, and g_ul_ms_ticks.

volatile uint8_t g_b_button_event = 0

Push button event.

Referenced by main(), and set_toggle_flag().

volatile bool g_b_systick_event = false

System Tick event flag.

Referenced by main(), and SysTick_Handler().

volatile uint32_t g_ul_ms_ticks = 0

System tick increased by 1 every millisecond.

struct wdt_config g_wdt_cfg

WDT configuration.

Referenced by main().

struct wdt_dev_inst g_wdt_inst

WDT instance.

Referenced by main().