wdt_example.c File Reference

AVR XMEGA WDT driver example.

Copyright (c) 2011-2018 Microchip Technology Inc. and its subsidiaries.

#include <asf.h>

Enumerations
enum	wdt_example_state_t {   START_OF_PROG = 1,   WDT_MCU_RESET = 2,   REFRESH_NO_WIN = 3,   REFRESH_WINDOW = 4,   WDT_RST_NO_WIN = 5,   WDT_RST_WINDOW = 6,   WDT_RST_RFSH_W = 7,   END_OF_PROG = 8,   ERROR_STATE = 9 }
	brief States of the example. More...

Functions
static void	led_display (uint8_t led_val)
	LED display value. More...
int	main (void)
	Main function. More...

Variables
enum wdt_example_state_t	state_flag
	Global variables not initialized. More...

enum wdt_example_state_t

brief States of the example.

Enumerator
START_OF_PROG	Writing tests in WDT.
WDT_MCU_RESET	MCU reset using WDT.
REFRESH_NO_WIN	WDT in normal mode, 8x wdt_reset() before TIMEOUT (TO)
REFRESH_WINDOW	WDT in window mode, 4x wdt_reset() when window is opened & before TO.
WDT_RST_NO_WIN	WDT in normal mode, no wdt_reset(), reaching the TO.
WDT_RST_WINDOW	WDT in window mode, no wdt_reset(), reaching the TO.
WDT_RST_RFSH_W	WDT in window mode, wdt_reset() when window is closed.
END_OF_PROG	MCU software Reset and the program restarts.
ERROR_STATE	WDT error (loop without end)

static void led_display ( uint8_t  led_val )

static

LED display value.

Parameters

led_val

LED display value

Referenced by main().

int main

(

void

)

Main function.

References board_init(), CHIP_RESET_CAUSE_BOD_CPU, CHIP_RESET_CAUSE_EXTRST, CHIP_RESET_CAUSE_OCD, CHIP_RESET_CAUSE_POR, CHIP_RESET_CAUSE_SOFT, CHIP_RESET_CAUSE_SPIKE, CHIP_RESET_CAUSE_WDT, delay_ms, END_OF_PROG, ERROR_STATE, led_display(), REFRESH_NO_WIN, REFRESH_WINDOW, reset_cause_clear_causes(), reset_cause_get_causes(), reset_do_soft_reset(), START_OF_PROG, sysclk_init(), wdt_disable(), wdt_enable(), wdt_enable_window_mode(), wdt_get_timeout_period(), WDT_MCU_RESET, wdt_reset, wdt_reset_mcu(), WDT_RST_NO_WIN, WDT_RST_RFSH_W, WDT_RST_WINDOW, wdt_set_timeout_period(), wdt_set_window_period(), WDT_TIMEOUT_PERIOD_1KCLK, WDT_TIMEOUT_PERIOD_250CLK, WDT_TIMEOUT_PERIOD_2KCLK, WDT_TIMEOUT_PERIOD_500CLK, WDT_TIMEOUT_PERIOD_8CLK, WDT_WINDOW_PERIOD_1KCLK, WDT_WINDOW_PERIOD_250CLK, and WDT_WINDOW_PERIOD_4KCLK.

enum wdt_example_state_t state_flag

Global variables not initialized.