timer.c

Samsung S3C2443 Test program source code

/******************************************************************************/
// 
// File Name   : Timer.c
// Description : S3C2443 PWM Timer test 
// Version     : 0.3 
// Date    	   : July 3, 2003
//   0.0 : Programming start (February 27,2002 in 2410) -> SOP
//   0.1 : Modified by Y. H. Lee
//   0.2 : edited by junon
//   0.3:  Modified by Jcs (2006.05.20)
/*******************************************************************************/

/* Include Files */
#include <string.h>
#include "def.h"
#include "option.h"
#include "2443addr.h"
#include "console.h"
#include "system.h"
#include "timer.h"

/* Structure Define for DMA Special Registers */
typedef struct tagDMA
{
    volatile U32 DISRC;	    //0x0
    volatile U32 DISRCC;    //0x4
    volatile U32 DIDST;	    //0x8
    volatile U32 DIDSTC;    //0xc
    volatile U32 DCON;	    //0x10
    volatile U32 DSTAT;	    //0x14
    volatile U32 DCSRC;	    //0x18
    volatile U32 DCDST;	    //0x1c
    volatile U32 DMASKTRIG; //0x20
    volatile U32 DMAREQSEL;	//0x24
}DMA;

static volatile int dmaDone; 
int TestMode; 

volatile int isWdtInt1;

//=========================================================================
//
//  Timer input clock frequency = PCLK/{prescaler value+1}/{divider value}
//  {prescaler value} = 0 ~ 255, {divider value} = 2,4,8,16
//
//=========================================================================

/******************** Selection Routine for Timer Test ********************/ 
void * func_timer_test[][2]=
{	
	(void *)Test_TimerNormal, 			"Timer Normal    ",
	(void *)Test_TimerInt, 				"Timer Interrupt ",
	(void *)Test_TimerDma,				"Timer DMA       ",

	0,0
};


void Test_Timer(void)
{
	int i;
	
	while(1)
	{
		printf("\n\n============== Timer Function Test ==============\n");

		i=0;
		printf("\n");
		while(1)
		{   //display menu
			printf("%2d:%s",i,func_timer_test[i][1]);
			i++;
			if((int)(func_timer_test[i][0])==0)
			{
				printf("\n");
				break;
			}
			if((i%2)==0)
			printf("\n");
		}

		printf("\n=================================================\n");
	
		printf("\nPress Enter key to exit : ");
		i = GetIntNum();
		if(i==-1) break;		// return.
		if(i>=0 && (i<((sizeof(func_timer_test)-1)/8)) )	// select and execute...
			( (void (*)(void)) (func_timer_test[i][0]) )();
	}
	
}



/******************** PWM Timer Normal Operation Test ********************/
void Test_TimerNormal(void)
{
    int save_B,save_H,save_PB,save_PH,save_MI;
    char key, toggle;
    
    /* Save Current Register related to PWM Port */
    //Save Current GPB, G, H Configure Registers 
    save_B  = rGPBCON;
    save_H  = rGPHCON;
    //Save Pull-Up Disable Register     
    save_PB = rGPBUDP;
    save_PH = rGPHUDP;
    //Save Miscellaneous Control Register 
    save_MI = rMISCCR;   
    
    /* Setting Port related to PWM */ 
    // PortB
    rGPBUDP = rGPBUDP & ~(0x3ff)|0x2aa; //GPB[4:0] Pull Up/Down disable
    rGPBCON = rGPBCON & ~(0x3ff) |0x2aa; //TCKL, TOUT[3:0]   

    // PortH
    rGPHUDP = rGPHUDP  & ~(0x3<<26)|(0x2<<26); //GPH[13] Pull Up/Down disable
    rGPHCON = rGPHCON & ~(0x3<<26) |(0x2<<26); //GPH13=>CLKOUT0  
    // Miscellaneous Control Register
    rMISCCR = rMISCCR & ~(0x7<<4) |(0x4<<4); //Select PCLK with CLKOUT0

    printf("[Select Timer Test Setting]\n");
    printf("a. Prescaler 1, 0: 0, Dead zone Disable, MUX 4~0: 1/2, (H/L)duty 50 \n");
    printf("b. Prescaler 1, 0: 8, Dead zone Enable, MUX 4~0: 1/16, (H/L)duty 50 \n");
    printf("c. (H/L)duty 0, TCNT =< TCMP, Inverter On\n");
    printf("d. TCLK Input Divider Test\n");
    printf("Select [a ~ d]: \n");
    
        
    key = getchar();    
    printf("\n");    
	
	/* Timer Configuration Register.0, 1(TCFG0, TCFG1) Setting */
	switch(key)
    {
        case 'a':
           	
    		rTCFG0 = rTCFG0 & ~(0xffffff) | 0x00000; //Dead zone=0, Prescaler1=0, Prescaler0=0
           	rTCFG1 = 0x0; //All Interrupt, MUX 4 ~ 0: 1/2            
              printf("Prescaler1=0, Prescaler0=0, Dead Zone Disable, MUX 4 ~ 0: 1/2, Duty 50% \n");
            break;
        
        case 'b':    
            
            rTCFG0 = rTCFG0 & ~(0xffffff) | (0x0)<<16 | (0x7)<<8 | (0x7); //Dead zone=0, Prescaler1=7, Prescaler0=7
	     	rTCFG1 = rTCFG1 & ~(0xffffff) | (0x3)<<16 | (0x3)<<12 | (0x3)<<8 | (0x3)<<4 | (0x3); //All Interrupt, MUX 4 ~ 0: 1/16
            printf("Prescaler1=8, Prescaler0=8, Dead zone=200 Enable, MUX 4 ~ 0: 1/16, duty = 50%, Consider Dead zone effect\n");        		
            break;
            
        case 'c':    
            
            rTCFG0 = rTCFG0 & ~(0xffffff) | 0x0;	//Dead zone=0, Prescaler1=0, Prescaler0=0
	     	rTCFG1 = rTCFG1 & ~(0xffffff) | 0x0;	//All Interrupt, MUX 4 ~ 0: 1/2
            printf("(H/L)Duty 0, TCNT =< TCMP, Inverter On\n");
            break;
        
        case 'd':
           	
    	    rTCFG0 = rTCFG0 & ~(0xffffff) | 0x0; //Dead zone=0, Prescaler1=0, Prescaler0=0
            rTCFG1 = rTCFG1 & ~(0xffffff) | 0x4 | 0x4 << 4 | 0x4 << 8 | 0x4 << 12 | 0x4 << 16;	//All Interrupt, MUX 4 ~ 0: 1/2            
            printf("TCLK Input Divider Test(if TCLK=25.4MHZ)\n");
            break;
         
        default:
            rGPBCON = save_B; 
            rGPHCON = save_H;           
            rGPBUDP = save_PB;
            rGPHUDP = save_PH;
            rMISCCR = save_MI;
            return;
    }
    
    //(1/(PCLK/(Prescaler+1)/divider) * count(Max 65535) = Timer clock (Frequency)
    //(1/(50.8MHz/1/2))  *  2000 = 0.0787 msec ( 12.7 KHz)
    //(1/(50.8MHz/1/2))  *  4000 = 0.1575 msec ( 6.35 KHz)
    //(1/(50.8MHz/1/2))  *  5000 = 0.1969 msec ( 5.080 KHz)
    //(1/(50.8MHz/1/2))  *  10000 = 0.3937 msec ( 2.54 KHz)
    
    //(1/(50.8MHz/8/16)) *  2000 = 5.039 msec ( 198.45 Hz)
    //(1/(50.8MHz/8/16)) *  4000 = 10.079 msec ( 99.216 KHz)
    //(1/(50.8MHz/8/16)) *  5000 = 12.598 msec ( 79.38 Hz) 
    //(1/(50.8MHz/8/16)) *  10000 = 25.197 msec ( 39.687 Hz)
                          
    rTCNTB0 = 2000;      
    rTCNTB1 = 4000;       
    rTCNTB2 = 5000;       
    rTCNTB3 = 10000;      
                                                
    rTCMPB0 =  2000 - 1000; //(H/L)duty 50%
    rTCMPB1 =  4000 - 2000;
    rTCMPB2 =  5000 - 2500;
    rTCMPB3 = 10000 - 5000;
	
	rTCON  = rTCON & ~(0xffffff) | 0x1<<1 | 0x1<<9 | 0x1<<13 | 0x1<<17 | 0x1<<21 ; //Manual update 
	
	switch(key)
	{
	case 'a':
		
     	 rTCON   = rTCON & ~(0xffffff) | 0x599909;  //Auto reload, Inverter off, No operation, Start, Dead zone Disable
	break;
		
	case 'b':
	
     	rTCNTB0 = rTCNTB0 & ~(0xffff) | 5; //(1/(50.8MHz/8/16)) *  500 = 1.273 msec ( 793.8 Hz)
     	rTCMPB0 =  5 - 2; //(H/L)duty 50%
     	
     	rTCON = rTCON & ~(0xffffff) | 0x6aaa0a;  //Auto reload, Inverter off, Manual update, Stop, Dead zone Disable
    	rTCON = rTCON & ~(0xffffff) | 0x599909| (0x1) << 4;  //Auto reload, Inverter off, No operation, Start, Dead zone Enable
		
    	break;
    	
    case 'c':
	
     	rTCNTB0 = rTCNTB0 & ~(0xffff) | 1000; 
     	rTCMPB0 =  300;      
     	
     	rTCNTB1 = rTCNTB1 & ~(0xffff) | 1000; 
     	rTCMPB1 =  1000; 
     	
     	rTCNTB2 = rTCNTB2 & ~(0xffff) | 1000; 
     	rTCMPB2 =  1000; 
     	
     	rTCNTB3 = rTCNTB3 & ~(0xffff) | 1000; 
     	rTCMPB3 =  1000; 
     		
     	rTCON = rTCON & ~(0xffffff) | 0x1 << 1 | 0x1 << 9 | 0x1 << 13 | 0x1 << 17 | 0x1 << 21;  //Auto reload disable, Inverter off, Manual update, Stop, Dead zone Disable
		rTCON = rTCON & ~(0xffffff) | 0x1 | 0x1 << 2 | 0x1 <<8 | 0x1 << 10| 0x1 << 12 | 0x1 << 14 | 0x1 << 16 | 0x1 << 18| 0x1 << 20;  //Auto reload enable, Inverter On, No Operation, Start, Dead zone Disable
		
		printf("rTCNTB0 = Dec:%d, rTCNTO0 = Dec:%d, rTCMPB0 = Dec:%d\n",rTCNTB0, rTCNTO0, rTCMPB0);
    	break;
    
    case 'd':
    
		rTCON   = rTCON & ~(0xffffff) | 0x599909;  //Auto reload, Inverter off, No operation, Start, Dead zone Disable
		break;
    
     	default:
        break;
    }
          
    if(key=='a' && (PCLK==(203200000/4)))  
    {
        
      	printf("PCLK 50.8MHz, Timer TOUT0 : 0.0787 msec ( 12.70 KHz)\n");
      	printf("PCLK 50.8MHz, Timer TOUT1 : 0.1575 msec (  6.35 KHz)\n");
        printf("PCLK 50.8MHz, Timer TOUT2 : 0.1969 msec (  5.08 KHz)\n");
        printf("PCLK 50.8MHz, Timer TOUT3 : 0.3937 msec (  2.54 KHz)\n");        
    }    
      
    else if(key=='b' && (PCLK==(203200000/4)))  
    {
        printf("PCLK 50.8MHz, Timer TOUT0 :   1.273 msec (793.8 KHz)\n");
        printf("PCLK 50.8MHz, Timer TOUT1 : /TOUT0 \n");
        printf("PCLK 50.8MHz, Timer TOUT2 : 13.6094 msec ( 73.478 Hz)\n");
        printf("PCLK 50.8MHz, Timer TOUT3 : 27.2189 msec ( 36.739 Hz)\n");                        
    }    
    
    else if(key=='d' && (PCLK==(203200000/4)))	 
    {
        printf("then Timer TOUT 0 : 0.0787 msec ( 12.70 KHz)\n");
        printf("then Timer TOUT 1 : 0.1575 msec (  6.35 KHz)\n");
        printf("then Timer TOUT 2 : 0.1969 msec (  5.08 KHz)\n");
        printf("then Timer TOUT 3 : 0.3937 msec (  2.54 KHz)\n");                        
    }
    
    printf("\nProbe PCLK.\n");
    printf("Probe TOUT0.\n");
    printf("Probe TOUT1.\n");
    printf("Probe TOUT2.\n");
    printf("Probe TOUT3.\n");
    
    printf("\nCheck PWM (Pulse Width Modulation) Output\n");
    printf("Press any key.\n");
    getchar();   
    
    /* Stop Timer0, 1, 2, 3, 4 */
    rTCON   = 0x0;	//One-shot, Inverter off, No operation, Dead zone disable, Stop Timer 
	
    rGPBCON = save_B; 
    rGPHCON = save_H;    
    rGPBUDP  = save_PB;
    rGPHUDP  = save_PH;
    rMISCCR = save_MI;

}

/******************** Timer Interrupt 0/1/2/3/4 test ********************/										
volatile int variable0,variable1,variable2,variable3,variable4;
int j;

void Test_TimerInt(void)
{
    variable0 = 0;variable1 = 0;variable2 = 0;variable3 = 0;variable4 = 0;
		
	/* Timer0,1,2,3,4 Interrupt service is available */ 
    rINTMSK = ~(BIT_TIMER4 | BIT_TIMER3 | BIT_TIMER2 | BIT_TIMER1 | BIT_TIMER0);
	// printf("rINTMSK (After)  = 0x%8x   <= Timer4,3,2,1 Bit[14:10]\n",rINTMSK);

    /* Timer0,1,2,3,4 Interrupt Service Routine Entry Point Determine */ 
    pISR_TIMER0 = (int)Timer0Done;
    pISR_TIMER1 = (int)Timer1Done;
    pISR_TIMER2 = (int)Timer2Done;
    pISR_TIMER3 = (int)Timer3Done;
    pISR_TIMER4 = (int)Timer4Done;

    printf("\n[Timer 0,1,2,3,4 Interrupt Test]\n\n");

    rTCFG0 = rTCFG0 & ~(0xffffff) | 0xff | 0xff<<8; //Dead zone=0,Prescaler1=255(0x0f),Prescaler0=255(0x0f)
    rTCFG1  =rTCFG1 & ~(0xffffff) | 0x001233; //All interrupt,Mux4=1/2,Mux3=1/4,Mux2=1/8,Mux1=1/16,Mux0=1/16
	
    rTCNTB0 = 30000;         
    rTCNTB1 = 30000;           
    rTCNTB2 = 30000;           
    rTCNTB3 = 30000;        
    rTCNTB4 = 30000;         
    
    rTCMPB0 = 15000;
    rTCMPB1 = 15000;
    rTCMPB2 = 15000;
    rTCMPB3 = 15000;
    
    rTCON  = rTCON & ~(0xffffff) | 0x1<<1 | 0x1<<9 | 0x1<<13 | 0x1<<17 | 0x1<<21 ; //Manual update