led.c File Reference

#include "led.h"
#include <LPC17xx.h>

Go to the source code of this file.

Functions
void	LED_Init (void)
void	LED_Deinit (void)
void	LED_On (u8 which)
	Turns on the specified LEDs.
void	LED_Off (u8 which)
	Turns off the specified LEDs.
void	LED_Output (u8 value)
	Displays the value using LEDs.
void	LED_Clear (void)
	Clears the LEDs.

Function Documentation

LED_Clear()

void LED_Clear

(

void

)

Clears the LEDs.

Definition at line 32 of file led.c.

{
    LPC_GPIO2->FIOCLR = LED_ALL;
}

LED_Deinit()

void LED_Deinit

(

void

)

Definition at line 11 of file led.c.

{
    LPC_GPIO2->FIODIR &= ~0xFF; // i.e. 0xFFFFFF00, top 24 unchanged, bottom 8 = 0
}

LED_Init()

void LED_Init

(

void

)

Definition at line 4 of file led.c.

{
    LPC_PINCON->PINSEL4 &= 0xFFFF0000; // P2.0 to P2.7 set to function 00 (GPIO)
    LPC_GPIO2->FIODIR |= 0xFF;         // P2.0 to P2.7 set as output
    LED_Off(0xFF);                     // Turn off all LEDs
}

LED_Off()

void LED_Off

(

u8

leds

)

Turns off the specified LEDs.

Parameters

leds	Bitmask of LEDs to turn off [LED(0..7)]

Definition at line 21 of file led.c.

{
    LPC_GPIO2->FIOCLR = which;
}

LED_On()

void LED_On

(

u8

leds

)

Turns on the specified LEDs.

Parameters

leds	Bitmask of LEDs to turn on [LED(0..7)]

Definition at line 16 of file led.c.

{
    LPC_GPIO2->FIOSET = which;
}

LED_Output()

void LED_Output

(

u8

value

)

Displays the value using LEDs.

Parameters

value

The 8 bit value to display

Definition at line 26 of file led.c.

{
    LED_Off(LED_ALL);
    LED_On(value);
}