📄 timer.c
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/******************************************************************************/
//
// File Name : Timer.c
// Description : S3C2440 Timer and Watch-dog Function Test
// Version : 0.2
// 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
//
/*******************************************************************************/
/* Include Files */
#include <string.h>
#include "def.h"
#include "option.h"
#include "2440addr.h"
#include "2440lib.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
}DMA;
static volatile int dmaDone;
int TestMode;
extern U32 Pclk;
volatile int isWdtInt;
//=========================================================================
//
// 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 ",
(void *)Test_WDT_IntReq, "WDT Interrupt ",
0,0
};
void Timer_Test(void)
{
int i, sel;
while(1)
{
i=0;
Uart_Printf("+-----------------[ Timer test ]------------------+\n");
while(1)
{ //display menu
Uart_Printf("| %2d:%s\n",i+1,func_timer_test[i][1]);
i++;
if((int)(func_timer_test[i][0])==0) break;
}
Uart_Printf("| %2d:Previous menu\n", i+1);
Uart_Printf("+-------------------------------------------------+\n");
Uart_Printf(" Select the number to test : ");
sel = Uart_GetIntNum();
sel--;
Uart_Printf("+-------------------------------------------------+\n\n\n");
if(sel == i){
return;
}if(sel>=0 && (sel<((sizeof(func_timer_test)-1)/8)) ){
( (void (*)(void)) (func_timer_test[sel][0]) )();
}else{
Uart_Printf("Wrong number seleted.. Try again!!\n\n\n");
}
}
}
/******************** PWM Timer Normal Operation Test ********************/
void Test_TimerNormal(void)
{
int save_B,save_G,save_H,save_PB,save_PG,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_G = rGPGCON;
save_H = rGPHCON;
//Save Pull-Up Disable Register
save_PB = rGPBUP;
save_PG = rGPGUP;
save_PH = rGPHUP;
//Save Miscellaneous Control Register
save_MI = rMISCCR;
/* Setting Port related to PWM */
// PortB
rGPBUP = rGPBUP & ~(0x1f) | 0x1f; //GPB[4:0] Pull Up
rGPBCON = rGPBCON & ~(0x3ff) | 0x2 | 0x2 << 2 | 0x2 << 4 | 0x2 << 6 | 0x2 << 8; //TCKL0, TOUT[3:0]
// PortG
rGPGUP = rGPGUP & ~(0x800) | 0x800; //GPG11 Pull Up
rGPGCON = rGPGCON & ~(0xc00000) | 0xc00000; //TCLK1
// PortH
rGPHUP = rGPHUP & ~(0x200) | 0x200; //GPH9 Pull Up
rGPHCON = rGPHCON & ~(0x3<<18) | (0x2<<18); //CLKOUT0
// Miscellaneous Control Register
rMISCCR = rMISCCR & ~(0xf0) | 0x40; //Select PCLK with CLKOUT0
Uart_Printf("[Select Timer Test Setting]\n");
Uart_Printf("a. Prescaler 1, 0: 0, Dead zone Disable, MUX 4~0: 1/2, (H/L)duty 50 \nb. Prescaler 1, 0: 8, Dead zone Enable, MUX 4~0: 1/16, (H/L)duty 50 \nc. (H/L)duty 0, TCNT =< TCMP, Inverter On\nd. TCLK0, TCLK1 Input Divider Test\n");
Uart_Printf("Select [a ~ d]: \n");
key = Uart_Getch();
Uart_Printf("%c\n\n",key);
/* Timer Configuration Reg.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
break;
case 'b':
rTCFG0 = rTCFG0 & ~(0xffffff) | (0xc8)<<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
break;
case 'c':
rTCFG0 = rTCFG0 & 0x0; //Dead zone=0, Prescaler1=0, Prescaler0=0
rTCFG1 = rTCFG1 & 0x0; //All Interrupt, MUX 4 ~ 0: 1/2
Uart_Printf("(H/L)Duty 0, TCNT =< TCMP, Inverter On\n");
break;
case 'd':
rTCFG0 = rTCFG0 & ~(0xffffff) | 0x00000; //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
Uart_Printf("TCLK0, TCLK1 Input Divider Test(if TCLK0, TCLK1=25.4MHZ)\n");
break;
default:
rGPBCON = save_B;
rGPGCON = save_G;
rGPHCON = save_H;
rGPBUP = save_PB;
rGPGUP = save_PG;
rGPHUP = save_PH;
rMISCCR = save_MI;
return;
}
Uart_Printf("[Prescaler0=%d]\n",rTCFG0 & 0xff);
Uart_Printf("[Prescaler1=%d]\n",(rTCFG0 & 0xff00) >> 8);
Uart_Printf("[Dead Zone length=%d]\n",(rTCFG0 & 0xff0000) >> 16);
Uart_Printf("[DMA mode=");
switch((rTCFG1 & 0xf00000)>>20){
case 0:
Uart_Printf("No select(all interrupt)]\n");
break;
case 1:
Uart_Printf("Timer0]\n");
break;
case 2:
Uart_Printf("Timer1]\n");
break;
case 3:
Uart_Printf("Timer2]\n");
break;
case 4:
Uart_Printf("Timer3]\n");
break;
case 5:
Uart_Printf("Timer4]\n");
break;
default:
Uart_Printf("unknown.. 0x%x]\n", (rTCFG1 & 0xf00000)>>20);
break;
}
switch((rTCFG1 & 0xfffff)){
case 0x0:
Uart_Printf("MUX0 ~ MUX4 input: 1/2\n");
break;
case 0x11111:
Uart_Printf("MUX0 ~ MUX4 input: 1/4\n");
break;
case 0x22222:
Uart_Printf("MUX0 ~ MUX4 input: 1/8\n");
break;
case 0x33333:
Uart_Printf("MUX0 ~ MUX4 input: 1/16\n");
break;
case 0x44444:
case 0x55555:
case 0x66666:
case 0x77777:
Uart_Printf("MUX0 ~ MUX4 input: External TCLK1\n");
break;
default:
Uart_Printf("unkown value.. 0x%x\n", rTCFG1 & 0xfffff);
break;
}
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
Uart_Printf("###########################################\n");
Uart_Printf("Timer Status Display\n");
Uart_Printf("-------------------------------------------\n");
switch(key)
{
case 'a':
rTCON = rTCON & ~(0xffffff) | 0x599909; //Auto reload, Inverter off, No operation, Start, Dead zone Disable
break;
case 'b':
rTCNTB0 = rTCNTB0 & ~(0xffff) | 500; //(1/(50.8MHz/8/16)) * 500 = 1.273 msec ( 793.8 Hz)
rTCMPB0 = 500 - 250; //(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 = 1000;
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
Uart_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 == Pclk))
{
Uart_Printf("PCLK=%4.1fMhz(0x%x)\n", (float)PCLK/MEGA, PCLK);
Uart_Printf("TOUT0:16.67KHz(60usec)\n");
Uart_Printf("TOUT1: 8.33KHz(120usec)\n");
Uart_Printf("TOUT2: 6.66KHz(152usec)\n");
Uart_Printf("TOUT3: 3.33KHz(300usec)\n");
Uart_Printf("\nNow, Check PCLK freq. using Oscilloscope.\n");
Uart_Printf("Check TOUT0(CON13 43) using Oscilloscope.\n");
Uart_Printf("Check TOUT1(CON13 44) using Oscilloscope.\n");
Uart_Printf("Check TOUT2(CON14 43) using Oscilloscope.\n");
Uart_Printf("Check TOUT3(CON14 42) using Oscilloscope.\n");
}
else if((key=='b') && (PCLK == Pclk))
{
Uart_Printf("PCLK=%4.1fMhz(0x%x)\n", (float)PCLK/MEGA, PCLK);
Uart_Printf("TOUT0: 1.04KHz(960usec)\n");
Uart_Printf("TOUT1: 1.04KHz(960usec)\n");
Uart_Printf("TOUT2: 104.2Hz(9.6msec)\n");
Uart_Printf("TOUT3: 52.8Hz(19.2msec)\n");
Uart_Printf("\nNow, Check PCLK freq. using Oscilloscope.\n");
Uart_Printf("Check TOUT0(CON13 43) using Oscilloscope.\n");
Uart_Printf("Check TOUT1(CON13 44) using Oscilloscope.\n");
Uart_Printf("Check TOUT2(CON14 43) using Oscilloscope.\n");
Uart_Printf("Check TOUT3(CON14 42) using Oscilloscope.\n");
}
else if((key=='d') && (PCLK == Pclk))
{
Uart_Printf("You MUST Freq. signal to TCLK...\n");
Uart_Printf("酒流 肯己登瘤 臼篮 何盒烙.. \n");
/*
Uart_Printf("then Timer TOUT 0 : 0.0787 msec ( 12.70 KHz)\n");
Uart_Printf("then Timer TOUT 1 : 0.1575 msec ( 6.35 KHz)\n");
Uart_Printf("then Timer TOUT 2 : 0.1969 msec ( 5.08 KHz)\n");
Uart_Printf("then Timer TOUT 3 : 0.3937 msec ( 2.54 KHz)\n");
Uart_Printf("\nNow, Check PCLK freq. using Oscilloscope.\n");
Uart_Printf("Check TOUT0(CON13 43) using Oscilloscope.\n");
Uart_Printf("Check TOUT1(CON13 44) using Oscilloscope.\n");
Uart_Printf("Check TOUT2(CON14 43) using Oscilloscope.\n");
Uart_Printf("Check TOUT3(CON14 42) using Oscilloscope.\n");
*/
}
Uart_Printf("###########################################\n\n");
Uart_Printf("Check PWM (Pulse Width Modulation) Output using Oscilloscope\n");
Uart_Printf("Press any key.\n\n\n");
Uart_Getch();
/* Stop Timer0, 1, 2, 3, 4 */
rTCON = 0x0; //One-shot, Inverter off, No operation, Dead zone disable, Stop Timer
rGPBCON = save_B;
rGPGCON = save_G;
rGPHCON = save_H;
rGPBUP = save_PB;
rGPGUP = save_PG;
rGPHUP = 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 = variable1 = variable2 = variable3 = variable4 = -1;
Uart_Printf("\n[Timer 0,1,2,3,4 Interrupt Test]\n\n");
/* Timer0,1,2,3,4 Interrupt service is available */
rINTMSK = ~(BIT_TIMER4 | BIT_TIMER3 | BIT_TIMER2 | BIT_TIMER1 | BIT_TIMER0);
Uart_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;
rTCFG0 = rTCFG0 & ~(0xffffff) | 0xff | 0xff<<8; //Dead zone=0,Prescaler1=255(0x0f),Prescaler0=255(0x0f)
rTCFG1 =rTCFG1 & ~(0xffffff) | 0x033333; //All interrupt, ALL 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
rTCON = rTCON & ~(0xffffff) | 0x1 | 0x1<<3 ; //Timer 0 Start, Auto-reload
rTCON = rTCON | 0x1<<8 | 0x1<<11 ; //Timer 1 Start, Auto-reload
rTCON = rTCON | 0x1<<12 | 0x1<<15 ; //Timer 2 Start, Auto-reload
rTCON = rTCON | 0x1<<16 | 0x1<<19 ; //Timer 3 Start, Auto-reload
rTCON = rTCON | 0x1<<20 | 0x1<<22 ; //Timer 4 Start, Auto-reload
//Auto reload,Inverter off,No operation,Dead zone disable,Start
while(1) if(variable4 == 4) break;
Delay(1); //To compensate timer error(<1 tick period)
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