?? timer.c
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//=============================================================================
// File Name : Timer.c
// Function : S3C2410 Watch-Dog and Timer
// Program : Shin, On Pil (SOP)
// Date : May 21, 2002
// Version : 0.0
// History
// 0.0 : Programming start (February 27,2002) -> SOP
//=============================================================================
#include <string.h>
#include "2410addr.h"
#include "2410lib.h"
#include "timer.h"
void __irq Timer0Done(void);
void __irq Timer1Done(void);
void __irq Timer2Done(void);
void __irq Timer3Done(void);
void __irq Timer4Done(void);
void __irq Wdt_Int(void);
//=========================================================================
// SMDK2410 TOUT configuration
// GPB4=TCLK0, GPB3=TOUT3, GPB2=TOUT2, GPB1=TOUT1, GPB0=TOUT0, GPG11=TCLK1
// GPH9=CLKOUT0
//
//Timer input clock frequency = PCLK/{prescaler value+1}/{divider value}
//{prescaler value} = 0 ~ 255 , {divider value} = 2,4,8,16
//
// PWM Timer TOUT0/1/2/3 Test
//=========================================================================
void Test_Timer(void)
{
int save_B,save_G,save_H,save_PB,save_PG,save_PH,save_MI;
char key;
Uart_Printf("[ TOUT 0,1,2,3 Test ]\n\n");
// Uart_Printf("= Current Port Setting List =\n");
// Uart_Printf("rGPBCON = 0x%8x, rGPGCON = 0x%8x, rGPHCON= 0x%8x, rMISCCR = 0x%5x\n" ,rGPBCON,rGPGCON,rGPHCON,rMISCCR);
// Uart_Printf("rGPBUP = 0x%8x, rGPGUP = 0x%8x, rGPHUP = 0x%8x\n\n",rGPBUP , rGPGUP , rGPHUP);
save_B = rGPBCON;
save_G = rGPGCON;
save_H = rGPHCON;
save_PB = rGPBUP;
save_PG = rGPGUP;
save_PH = rGPHUP;
save_MI = rMISCCR;
rGPBUP = rGPBUP & ~(0x1f) | 0x1f; //GPB4 ~ 0
rGPBCON = rGPBCON & ~(0x3ff) | 0x2aa; //Function Setting TCLK0, TOUT3 ~ 0
rGPGUP = rGPGUP & ~(0x800) | 0x800; //GPG11
rGPGCON = rGPGCON & ~(0xc00000) | 0xc00000; //TCLK1
rGPHUP = rGPHUP & ~(0x200) | 0x200; //GPH9
rGPHCON = rGPHCON & ~(0x3<<18) | (0x2<<18); //CLKOUT0
rMISCCR = rMISCCR & ~(0xf0) | 0x40; //Select PCLK with CLKOUT0
// Uart_Printf("= Changed Port Setting List =\n");
// Uart_Printf("rGPBCON = 0x%8x, rGPGCON = 0x%8x, rGPHCON= 0x%8x, rMISCCR = 0x%5x\n" ,rGPBCON,rGPGCON,rGPHCON,rMISCCR);
// Uart_Printf("rGPBUP = 0x%8x, rGPGUP = 0x%8x, rGPHUP = 0x%8x\n\n",rGPBUP , rGPGUP , rGPHUP);
Uart_Printf("[ Select Timer Clock ]\n");
Uart_Printf("a. PCLK b. External TOUT[0,1,2,3]\n");
Uart_Printf("\nSelect the function to test : ");
key = Uart_Getch();
Uart_Printf("%c\n\n",key);
rTCFG0 = rTCFG0 & ~(0xffffff) | 0x10000; //Dead zone=1,Prescaler1=0,Prescaler0=0
switch(key)
{
case 'a':
rTCFG1 = 0x0; //All Interrupt, MUX 4 ~ 0 : 1/2
Uart_Printf("PCLK Check Selected\n");
Uart_Printf("Probing PCLK : CON15 - 26\n");
break;
case 'b':
rTCFG0 = rTCFG0 & ~(0xffffff) | 0x44444; //Dead zone=4,Prescaler1=68(0x44),Prescaler0=68(0x44)
// Uart_Printf("rTCFG0 = 0x%6x <= Timer configuration register0.\n",rTCFG0);
Uart_Printf("External TOUT[0,1,2,3] Check Selected\n");
// Uart_Printf("Probing TCLK 0 : U16 - 14\n");
// Uart_Printf("Probing TCLK 1 : S4 - 1\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;
}
//(1/(PCLK/(Prescaler+1)/divider) * count(Max 65535) = Timer clock (Frequency)
rTCNTB0 = rTCNTB0 & ~(0xffff) | 2000; //(1/(50MHz/69/2)) * 2000 = 5.5200 msec (181.159 Hz)
//(1/(50.7MHz/69/2))* 2000 = 5.4437 msec (183.698 Hz)
//(1/(50MHz/1/2)) * 2000 = 0.0800 msec ( 12.500 KHz)
//(1/(50.7MHz/1/2)) * 2000 = 0.0788 msec ( 12.690 KHz)
rTCNTB1 = rTCNTB1 & ~(0xffff) | 4000; //(0.0000027600003) * 4000 = 11.0400 msec ( 90.579 Hz)
//(0.0000027218935) * 4000 = 10.8875 msec ( 91.848 Hz)
//(0.00000004) * 4000 = 0.1600 msec ( 6.250 KHz)
//(0.0000000394477) * 4000 = 0.1577 msec ( 6.337 KHz)
rTCNTB2 = rTCNTB2 & ~(0xffff) | 5000; //(0.0000027600003) * 5000 = 13.8000 msec ( 72.463 Hz)
//(0.0000027218935) * 5000 = 13.6094 msec ( 73.478 Hz)
//(0.00000004) * 5000 = 0.2000 msec ( 5.000 KHz)
//(0.0000000394477) * 5000 = 0.1972 msec ( 5.070 KHz)
rTCNTB3 = rTCNTB2 & ~(0xffff) | 10000; //(0.0000027600003) * 10000 = 27.6000 msec ( 36.231 Hz)
//(0.0000027218935) * 10000 = 27.2189 msec ( 36.739 Hz)
//(0.00000004) * 10000 = 0.4000 msec ( 2.500 KHz)
//(0.0000000394477) * 10000 = 0.3944 msec ( 2.535 KHz)
// Uart_Printf("rTCNTB0 = %d <= Timer 0 counter buffer register.\n",rTCNTB0);
rTCMPB0 = 2000 - 1000; //(H/L)duty 50%
rTCMPB1 = 4000 - 2000;
rTCMPB2 = 5000 - 2500;
rTCMPB3 = 10000 - 5000;
// Uart_Printf("rTCMPB0 = %d <= Timer 0 compare buffer register.\n",rTCMPB0);
// Uart_Printf("rTCON = 0x%6x (Before) <= Timer control register.\n",rTCON);
// [22:20] [19:16] [15:12] [11:8] [7:4] [3:0]
// 110 1010 1010 1010 0000 1010
rTCON = rTCON & ~(0xffffff) | 0x6aaa0a; //Auto reload, Inverter off, Manual update, Stop, Dead zone disable
// Uart_Printf("rTCON = 0x%6x (After) <= Timer control register.(0x6aaa0a)\n",rTCON);
// Uart_Printf("rTCON = 0x%6x (Before) <= Timer control register.\n",rTCON);
// [22:20] [19:16] [15:12] [11:8] [7:4] [3:0]
// 101 1001 1001 1001 0000 1001
rTCON = rTCON & ~(0xffffff) | 0x599909; //Auto reload, Inverter off, No operation, Start, Dead zone disable
// Uart_Printf("rTCON = 0x%6x (After) <= Timer control register.(0x599909)\n\n",rTCON);
Uart_Printf("Probing TOUT 0 : J10 - 2\n");
Uart_Printf("Probing TOUT 1 : U20 - 1\n");
Uart_Printf("Probing TOUT 2 : U16 - 13\n");
Uart_Printf("Probing TOUT 3 : U16 - 15\n");
if(key=='a' && PCLK==50000000) //Oscilloscope Measurement OK, May 21, 2002 SOP
{
Uart_Printf("PCLK 50MHz, Timer TOUT 0 : 0.08 msec (12.50 KHz)\n");
Uart_Printf("PCLK 50MHz, Timer TOUT 1 : 0.16 msec ( 6.25 KHz)\n");
Uart_Printf("PCLK 50MHz, Timer TOUT 2 : 0.20 msec ( 5.00 KHz)\n");
Uart_Printf("PCLK 50MHz, Timer TOUT 3 : 0.40 msec ( 2.50 KHz)\n");
}
else if(key=='a' && (PCLK==(202800000/4))) //Oscilloscope Measurement OK, May 21, 2002 SOP
{
Uart_Printf("PCLK 50.7MHz, Timer TOUT 0 : 0.0788 msec ( 12.690 KHz)\n");
Uart_Printf("PCLK 50.7MHz, Timer TOUT 1 : 0.1577 msec ( 6.337 KHz)\n");
Uart_Printf("PCLK 50.7MHz, Timer TOUT 2 : 0.1972 msec ( 5.070 KHz)\n");
Uart_Printf("PCLK 50.7MHz, Timer TOUT 3 : 0.3944 msec ( 2.535 KHz)\n");
}
else if(key=='b' && PCLK==50000000) //Oscilloscope Measurement OK, May 21, 2002 SOP
{
Uart_Printf("PCLK 50MHz, Timer TOUT 0 : 5.5200 msec (181.159 Hz)\n");
Uart_Printf("PCLK 50MHz, Timer TOUT 1 : 11.0400 msec ( 90.579 Hz)\n");
Uart_Printf("PCLK 50MHz, Timer TOUT 2 : 13.8000 msec ( 72.463 Hz)\n");
Uart_Printf("PCLK 50MHz, Timer TOUT 3 : 27.6000 msec ( 36.231 Hz)\n");
}
else if(key=='b' && (PCLK==(202800000/4))) //Oscilloscope Measurement OK, May 21, 2002 SOP
{
Uart_Printf("PCLK 50.7MHz, Timer TOUT 0 : 5.4437 msec (183.698 Hz)\n");
Uart_Printf("PCLK 50.7MHz, Timer TOUT 1 : 10.8875 msec ( 91.848 Hz)\n");
Uart_Printf("PCLK 50.7MHz, Timer TOUT 2 : 13.6094 msec ( 73.478 Hz)\n");
Uart_Printf("PCLK 50.7MHz, Timer TOUT 3 : 27.2189 msec ( 36.739 Hz)\n");
}
Uart_Printf("\nCheck PWM (Pulse Width Modulation) Output\n");
Uart_Printf("Press any key to exit.\n");
Uart_Getch();
//Stop timer
rTCON = 0x0; //One-shot, Inverter off, No operation, Dead zone disable, Stop
// Uart_Printf("rTCON = 0x%6x <= Timer control register.(0x0)\n",rTCON);
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;
void Test_TimerInt(void)
{
variable0 = 0;variable1 = 0;variable2 = 0;variable3 = 0;variable4 = 0;
// Uart_Printf("rINTMSK (Before) = 0x%8x\n",rINTMSK);
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);
pISR_TIMER0 = (int)Timer0Done;
pISR_TIMER1 = (int)Timer1Done;
pISR_TIMER2 = (int)Timer2Done;
pISR_TIMER3 = (int)Timer3Done;
pISR_TIMER4 = (int)Timer4Done;
Uart_Printf("\n[ Timer 0,1,2,3,4 Interrupt Test ]\n\n");
rTCFG0 = rTCFG0 & ~(0xffffff) | 0x000f0f; //Dead zone=0,Prescaler1=15(0x0f),Prescaler0=15(0x0f)
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