tc_timeout_example2.c File Reference

megaAVR Timer/Counter (TC) Timeout Driver Example 2

Copyright (c) 2014-2018 Microchip Technology Inc. and its subsidiaries.

#include "compiler.h"
#include "tc_timeout.h"

Macros
#define	BUTTON_MASK   (1 << 0)
#define	DEBOUNCE_TICKS   (50 * TC_TIMEOUT_TICK_HZ / 1000)
	Length of debounce timeout, in ticks. More...
#define	LED_MASK   (1 << 0)

Enumerations
enum	{ DEBOUNCE_TIMEOUT }

Functions
int	main (void)
static void	toggle_led (uint8_t mask)
	Toggle LED. More...

#define BUTTON_MASK   (1 << 0)

Referenced by main().

#define DEBOUNCE_TICKS   (50 * TC_TIMEOUT_TICK_HZ / 1000)

Length of debounce timeout, in ticks.

We want 50ms debounce timeout so we calculate that from the actual tick rate defined by TC_TIMEOUT_TICK_HZ.

Referenced by main().

#define LED_MASK   (1 << 0)

Referenced by main().

anonymous enum

Enumerator
DEBOUNCE_TIMEOUT

int main

(

void

)

References BUTTON_MASK, DEBOUNCE_TICKS, DEBOUNCE_TIMEOUT, LED_MASK, tc_timeout_init(), tc_timeout_start_singleshot(), tc_timeout_test_and_clear_expired(), and toggle_led().

static void toggle_led ( uint8_t  mask )

inlinestatic

Toggle LED.

Newer megaAVR devices can toggle a I/O pin by writing to PIN register, while on older ones this needs to be done by a read-modify-write operation. This function abstract these differences.

Parameters

mask	Mask of port LEDs to toggle

Referenced by main().