/*
X202Demo.c: Demo program for X202

Compiler: BC++ 3.1, 
          Turbo C ++ 1.01(3.01)

Compile mode: large

Project: X202Demo.c
         ..\..\Lib\7188el.lib
         ..\..\Lib\Xboard\X202.lib 
         
Hardware: 7188EX + X202

[20/May/2005] by Liam
[05/Jul/2005] by Liam
[Dec 14, 2011] by Nicholas
[Maech 16, 2012] by Nicholas
*/
/********************************************************************/
/*  X202:   7 channel 12-Bit A/D (Analog input)  0 ~ 20mA           */
/********************************************************************/

/********************************************************************/
/*  [Software specific]                                             */
/*      Input/Output range: +0.0V(0.0mA)   +2.5V(20mA)              */
/*      Decimal integer:    000            4095                     */
/*      Hexadecimal:        800            FFF                      */
/*                                                                  */
/*      [A/D]                                                       */
/*      sampling rate:  1800 data/sec (with floating convertion)    */
/*      Accuracy==>     Typical: +- 1 LSB (+- 0.6 mV or 4.8mA)      */
/*                      Maximum: +- 2 LSB (+- 1.2 mV or 9.6mA)      */
/*      [D/O]                                                       */
/*      throughput: can generates 2KHz square wave signals.         */
/********************************************************************/

/********************************************************************/
/*  [Caution]                                                       */
/*      The block 7 first 16 bytes of EEPROM on X board is used to  */
/*      store A/D & D/A calibration settings. When you use the      */
/*      EEPROM on X board, don't overwrite it.                      */
/********************************************************************/

#include <stdio.h>
#include "..\..\lib\7188e.h"
#include "..\..\lib\XBoard\X202.h"

void UserTimerFunction(void);

void main(void)
{
    int iAction, quit;
    int iChannel,iValue;
    float fValue;
	int iFlag=0;
    
    InitLib();
    X202_Init();
    X202_SetDelay(5); //Set reading exchanged A/D channel delay time 0.05ms    
    Puts("\n\rDemo program for 7188EX + X202\n\r");
    while(iAction!=5)
    {
        iAction=0;
        quit=0;
        
        Puts("\n\r");
        Puts("1) Reads setting from EEPROM\n\r");
        Puts("2) A/D (Analog input)\n\r");
		Puts("3) A/D (Analog input) read 32767 times\n\r");
        Puts("4) Start User's Timer Function to read A/D ch0, the interval is 2 sec\n\r");
        Puts("\n\r");
        Puts("5) Quits demo program\n\r\n\r");
        Puts("Choose an option and press [Enter]:");
        Scanf("%d",&iAction);
        Puts("\n\r");
        
        switch(iAction)
        {
            // Reads settings from EEPROM(on X board)
            case 1:
                iValue=X202_Init();
                if((iValue&1)==0)
                    Print("EEPROM A/D Gain ==> [%8.6f]\n\r",X202_fAD_Gain); 
                else
                    Print("No setting in EEPROM, A/D Gain ==> %8.6f\n\r",X202_fAD_Gain);
                if((iValue&2)==0)
                    Print("EEPROM A/D Offset ==> [%8.6f]\n\r",X202_fAD_Offset);
                else
                    Print("No setting in EEPROM, A/D Offset ==> %8.6f\n\r",X202_fAD_Offset);
            break;
            // A/D (Analog input)
            case 2:
                Puts("Please select A/D channel(0~6): ");
                Scanf("%d", &iChannel);
                
                if(iChannel>6)
                {
                    Puts("Unknow Channel Number!!\r\n\r\n");
                    break;
                }
                
                fValue=X202_AnalogIn(iChannel);
                Print("AI[%d]= %6.4fmA\n\r", iChannel, fValue);
            break;
			// A/D (Analog input) reads 32767 times
            case 3:
				Puts("Please select A/D channel(0~6): ");
                Scanf("%d",&iChannel);
                
                if(iChannel>6)
                {
                    Puts("Unknow Channel Number!!\r\n\r\n");
                    break;
                }
                
                fValue=X202_AnalogInHexToFloat(X202_AnalogIn_no(iChannel,32767));
                Print("AI[%d]= %6.4fmA\n\r\n\r", iChannel, fValue);
			break;            
			//Start User's Timer Function, the interval is 2 sec
			case 4:
				if(iFlag==0)
				{
					iFlag=1;
					InstallUserTimerFunction_ms(2000,UserTimerFunction);
				}
			break;
			
            case 5:
				if(iFlag==1)
				StopUserTimerFun();   				
            default:
				quit=1;
            break;
        }
        if(!quit)
        {
            Puts("Press any key to continue...\n\r");
            Getch();
        }
    }
}

void UserTimerFunction(void)
{
	int iInChannel=0;
	float fValue;
	fValue=X202_AnalogIn(iInChannel);
    Print("AI[%d]= %6.4fmA\n\r\n\r", iInChannel, fValue);
}