/* sysLed.c - Wind River SBC ARM7 User LED driver *//* Copyright 1984-2001 Wind River Systems, Inc. */#include "copyright_wrs.h"/*modification history--------------------01c,26apr01,m_h  convert tabs to spaces for readability01b,19apr01,m_h  add carriage routine at EOF to avoid compile warning01a,10apr01,g_h  created*//* includes */#include "sysLed.h"LOCAL UINT8 sysLed;LOCAL char  sysLedNumToMask(char led);/**************************************************************************** sysLedInit - Initialize LEDs.** This routine initializes the LED variable to zero and clears* all LEDs.** SEE ALSO: sysLedOn(), sysLedOff(), sysLedControl().** RETURNS: N/A.*/void sysLedInit(void)    {    sysLed = 0;    /*     * Write to LED.     */    WRITE_LED(sysLed);    }/**************************************************************************** sysLedOff - Turn selected LED off.** This routine set the selected LED to off.** SEE ALSO: sysLedInit(), sysLedOff(), sysLedControl().** RETURNS: N/A.*/void sysLedOff(UINT8 led)    {    sysLed &= ~sysLedNumToMask(led);    /*     * Write to LED.     */        WRITE_LED(sysLed);    }/**************************************************************************** sysLedOn - Turn selected LED on.** This routine set the selected LED to on.** SEE ALSO: sysLedInit(), sysLedOn(), sysLedControl().** RETURNS: N/A.*/void sysLedOn(UINT8 led)    {        sysLed |= sysLedNumToMask(led);    /*     * Write to LED.     */    WRITE_LED(sysLed);    }/**************************************************************************** sysLedControl - Turn selected LED(s) on or off.** This routine sets the selected LED on or off.** SEE ALSO: sysLedInit(), sysLedOff(), sysLedOn().** RETURNS: N/A.*/void sysLedControl(int led_on, UINT8 led)    {    /*     * Check led state.     */    if (led_on)        sysLed |=  sysLedNumToMask(led); /* Set LED on. */    else        sysLed &= ~sysLedNumToMask(led); /* Set LED off. */    /*     * Write to LED.     */        WRITE_LED(sysLed);    }/**************************************************************************** sysLedNumToMask - return the LED mask for given LED number** This routine is returning the LED mask for given LED number.** SEE ALSO: sysLedInit(), sysLedOff(), sysLedOn().** RETURNS: char ledMask*/LOCAL char sysLedNumToMask(char led){    char ledMask;    if(led < MIN_LED_NUMBER || led > MAX_LED_NUMBER)        return('\0');    switch(led)    {    case LED1:        ledMask = 0x01;        break;    case LED2:        ledMask = 0x02;        break;    case LED3:        ledMask = 0x04;        break;    case LED4:        ledMask = 0x08;        break;    case LED5:        ledMask = 0x10;        break;    case LED6:        ledMask = 0x20;        break;    case LED7:        ledMask = 0x40;        break;    case LED8:        ledMask = 0x80;        break;    default:        ledMask = 0x0;        break;    }    return(ledMask);}