sysled.c

au1500开发的应用程序

/* sysLed.c - V100R001BMC board LED driver */

/* Copyright 2002-2004 Founder Communications, Inc. */

/*
modification history
--------------------
01a,17mar05,fhchen  written
*/

/*
DESCRIPTION

This module contains the LED driver. LEDs in V100R001CPE are connected to
GPIO210 ~ GPIO215

NOTE
- For LED4, on is yellow color, and off is white color.
- sysLedColorSet is valid ONLY for LED4.

*/

/* includes */

#include "sysLed.h"
#include "sysGpio.h"

#ifdef INCLUDE_SYSLED

/***********************************************************************
*
* sysLedInit - Initialize LEDs.
*
* This routine initializes the GPIOs used by LEDs.
*
* RETURNS: N/A.
*
*/

void sysLedInit
    (
    void
    )
    {
    /*
     * do nothing right now, because GPIO will be initialized in sysHwInit
     * later after sysLedInit.
     */

    /* TODO: initialize GPIO210 ~ GPIO215 here */

    }

/***********************************************************************
*
* sysLedOff - Turn selected LED off.
*
* This routine set the selected LED to off.
*
*/

void sysLedOff
    (
    int led
    )
    {

    /* LED4 on CPE is strange, if HW led changes, change this too */

    if(led & LED4)
        {
        sysLedColorSet(LED4, white);
        led &= ~LED4;
        }

    /* Write to GPIO */

    sysGpioWrite(LED_PORT, led, LED_OFF);

    }

/***********************************************************************
*
* sysLedOn - Turn selected LED on.
*
* This routine set the selected LED to on.
*
*/

void sysLedOn
    (
    int led
    )
    {

    /* LED4 on CPE is strange, if HW led changes, change this too */

    if(led & LED4)
        {
        sysLedColorSet(LED4, yellow);
        led &= ~LED4;
        }
    
    /* Write to GPIO */

    sysGpioWrite(LED_PORT, led, LED_ON);  

    }

/***********************************************************************
*
* sysLedColorSet - Set color of the specified LED
*
* This routine set the color of the specified LED. Only LED4 support
* color setting.
*
*/

void sysLedColorSet
(
    int led,
    LED_COLOR color    
    )
    {

    /* check parameter  */

    if(led != LED4)
        return;
    
    switch(color)
        {
        case white:                         /* GPIO214 | GPIO215 */
            sysGpioWrite(LED_PORT, LED4, LED_ON);
            break;

        case red:                            /* GPIO215, ~GPIO214. */
            sysGpioWrite(LED_PORT, GPIO215, LED_ON);
            sysGpioWrite(LED_PORT, GPIO214, LED_OFF);
            break;

        case green:                          /* GPIO214 , ~GPIO215. */
            sysGpioWrite(LED_PORT, GPIO214, LED_ON);
            sysGpioWrite(LED_PORT, GPIO215, LED_OFF);
            break;

        case yellow:                          /* ~GPIO215, ~GPIO214 */
        default:
            sysGpioWrite(LED_PORT, LED4, LED_OFF);
            break;
        }
    }

#endif /* INCLUDE_SYSLED */