/*
 Pwrsave.c: How to use CPU(AM188ES)'s power save mode.                  
                                                                                      
    Compiler: BC++ 3.1,                                                               
              Turbo C ++ 1.01(3.01) (free from http://community.borland.com/museum)   
              MSC 6.0,                                                                
              MSVC 1.52.                                                              
                                                                                      
    Compile mode: large                                                               
                                                                                      
    Project: Pwrsave.c                                                                 
             ..\Lib\(8000E.Lib,7188XAL.Lib,7188XBL.Lib,7188XL.Lib or 7188EL.Lib)      
                                                                                      
    Hardware: 7188/8000                                                               
    Detail description:
                When com1's CTS is InActive,--> go to power save mode.
                When com1's CTS is Active,  --> back to normal mode.
                So the remote node must use RTS to control the power save mode.
                Before send command to 7188XC, must set back to normal mode,
                Then wait a moment for 7188XC to go back to normal mode (7188XC
                will set RTS active for it is on normal mode), then it can
                receive the RS-232 data correctly.
                
                When in power save mode ,Please Enable WDT, and user's program must
                refresh WDT.
   Execution:
                1. Run 7188xw.exe in PC.
                2. Run "pwrsave /d(x)" (mode ==> x: range from 0 to 7)                                            
                   range 0-7, --> the system clock is divide by:
                         0 --> 1                                
                         1 --> 2                                
                         2 --> 4                                
                         3 --> 8                                
                         4 --> 16                               
                         5 --> 32                               
                         6 --> 64                               
                         7 --> 128                              

                3. User can pull out the com1's plug to save mode, and plug in the 
                   com1's plug to normal mode. 
[24 May,2005] by Bill
*/

#include <conio.h>
#include"..\lib\7188Xb.h"

void SetToPowerSaveMode(int mode);
void SetToPowerNormalMode(void);
void ShowSave(void); 
void ShowNormal(void);

void main(int argc,char *argv[])
{ 
    int i,key;
    int divide=1;
    int quit=0;
    int mode=0; /* 0 : normal mode, 1: save mode */
    
    InitLib();
    
    for(i=1;i<argc;i++)
    {
        if(argv[i][0]=='/')
        {
            switch(argv[i][1])
            {
                case 'd':
                case 'D':
                    if(argv[i][2]>='0' && argv[i][2]<='7')
                    {
                        divide=argv[i][2]-'0';
                    }
                    break;
            }
        }
    }
    ShowNormal();
    
    while(!quit)
    {
        if(mode)
        { 
            /* in power save mode */
            EnableWDT();
            while(!GetCtsStatus1())
            {
                mode=0; /* back to normal mode */
                SetToPowerSaveMode(divide);
                RefreshWDT();
            }
            DisableWDT();
            mode=0; /* back to normal mode */
            SetToPowerNormalMode();
            ShowNormal();
        }
        if(Kbhit())
        {
            key=Getch();
            switch(key)
            {
                case 'q':
                        quit=1;
                    break;
                default:
                        Putch(key);
                    break;
            }
        }
        if(!GetCtsStatus1())
        {
            mode=1;
            ShowSave();
        }
    }
    SetToPowerNormalMode();
}

void SetToPowerSaveMode(int mode)
{
    unsigned  syscon;

    mode&=7; /* */
    syscon=inpw(0xfff0);
    syscon &= (~7);
    syscon |= mode+0x8000;
    outpw(0xfff0,syscon);
    SetRtsInactive1();
}

void SetToPowerNormalMode(void)
{
    unsigned  syscon;
  
    syscon=inpw(0xfff0);
    syscon &= (~0x8000);
    outpw(0xfff0,syscon);
    SetRtsActive1();
}

//Show "Save" in the 7-segment display for save mode.
void ShowSave(void)
{
    Set5DigitLedIntensity(1);
    Show5DigitLed(1,5);
    Show5DigitLed(2,10);
    Show5DigitLedSeg(3,0x3E);
    Show5DigitLed(4,14);
}

//Show "7188" in the 7-segment display for normal mode.
void ShowNormal(void)
{
    Set5DigitLedIntensity(7);
    Show5DigitLed(1,7);
    Show5DigitLed(2,1);
    Show5DigitLed(3,8);
    Show5DigitLed(4,8);
    Show5DigitLed(5,16);
}