📄 timer.c
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rTCFG1 =rTCFG1 & ~(0xffffff) | 0x001233; //All interrupt,Mux4=1/2,Mux3=1/4,Mux2=1/8,Mux1=1/16,Mux0=1/16
//Timer input clock frequency = PCLK/(prescaler value+1)/(divider value)
rTCNTB0 = 0xffff; //(1/(50MHz/16/16)) * 0xffff (65535) = 0.334s ( 2.994Hz)
rTCNTB1 = 0xffff; //(1/(50MHz/16/16)) * 0xffff (65535) = 0.334s ( 2.994Hz)
rTCNTB2 = 0xffff; //(1/(50MHz/16/8 )) * 0xffff (65535) = 0.163s ( 6.135Hz)
rTCNTB3 = 0xffff; //(1/(50MHz/16/4 )) * 0xffff (65535) = 0.078s (12.820Hz)
rTCNTB4 = 0xffff; //(1/(50MHz/16/2 )) * 0xffff (65535) = 0.039s (25.641Hz)
// [22:20] [19:16] [15:12] [11:8] [7:4] [3:0]
// 110 1010 1010 1010 0000 0010
// rTCON = 0x6aaa02; //Auto reload (T0=One-shot), Inverter off, Manual update, Dead zone disable, Stop
rTCON = rTCON & ~(0xffffff) | 0x6aaa0a; //Auto reload, Inverter off, Manual update, Dead zone disable, Stop
// [22:20] [19:16] [15:12] [11:8] [7:4] [3:0]
// 101 1001 1001 1001 0000 0001
rTCON = rTCON & ~(0xffffff) | 0x599901; //Auto reload(T0=One-shot),Inverter off,No operation,Dead zone disable,Start
/*
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\n");
if(PCLK==50000000)
{
Uart_Printf("PCLK 50MHz, Timer TOUT 0 : 0.334s ( 2.994Hz)\n");
Uart_Printf("PCLK 50MHz, Timer TOUT 1 : 0.334s ( 2.994Hz)\n");
Uart_Printf("PCLK 50MHz, Timer TOUT 2 : 0.163s ( 6.135Hz)\n");
Uart_Printf("PCLK 50MHz, Timer TOUT 3 : 0.078s (12.820Hz)\n");
Uart_Printf("PCLK 50MHz, Timer TOUT 4 : 0.039s (25.641Hz) <= No Pin Out\n\n");
}
*/
while(variable0 == 0);
Delay(1); //To compensate timer error(<1 tick period)
rTCON = 0x0; //One-shot, Inverter off, No operation, Dead zone disable, Stop
if(variable4==8 && variable3==4 && variable2==2 && variable1==1 && variable0==1)
{
Uart_Printf("Timer 0,1,2,3,4 Interrupt Test --> OK\n");
}
else
{
Uart_Printf("Timer 0,1,2,3,4 Interrupt Test --> Fail............\n");
}
Uart_Printf("Timer0 - %d (=1), Timer1 - %d (=1), Timer2 - %d (=2), Timer3 - %d (=4), Timer4 - %d (=8)\n",
variable0,variable1,variable2,variable3,variable4);
// Uart_Printf("Press any key to exit.....\n");
// while(!Uart_Getch()); //Key board press check
// 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\n",rINTMSK);
}
//========================================================
// Timer Interrupt Request
//========================================================
void __irq Timer0Done(void)
{
rSRCPND = BIT_TIMER0; //Clear pending bit
rINTPND = BIT_TIMER0;
rINTPND; //Prevent an double interrupt pending
variable0++;
}
//---------------------------------------------------------------------
void __irq Timer1Done(void)
{
rSRCPND = BIT_TIMER1; //Clear pending bit
rINTPND = BIT_TIMER1;
rINTPND;
variable1++;
}
//---------------------------------------------------------------------
void __irq Timer2Done(void)
{
rSRCPND = BIT_TIMER2; //Clear pending bit
rINTPND = BIT_TIMER2;
rINTPND;
variable2++;
}
//---------------------------------------------------------------------
void __irq Timer3Done(void)
{
rSRCPND = BIT_TIMER3; //Clear pending bit
rINTPND = BIT_TIMER3;
rINTPND;
variable3++;
}
//---------------------------------------------------------------------
void __irq Timer4Done(void)
{
rSRCPND = BIT_TIMER4; //Clear pending bit
rINTPND = BIT_TIMER4;
rINTPND;
variable4++;
}
/*
//========================================================
// Timer DMA 0/1/2/3/4 test
//========================================================
void Test_TimerDma(void)
{
variable0 = 0;variable1 = 0;variable2 = 0;variable3 = 0;variable4 = 0;
rINTMSK = ~(BIT_TIMER4 | BIT_TIMER3 | BIT_TIMER2 | BIT_TIMER1 | BIT_TIMER0);
pISR_TIMER0 = (int)Timer0Done;
pISR_TIMER1 = (int)Timer1Done;
pISR_TIMER2 = (int)Timer2Done;
pISR_TIMER3 = (int)Timer3Done;
pISR_TIMER4 = (int)Timer4Done;
Uart_Printf("[ Timer 0,1,2,3,4 DMA Test ]\n");
rTCFG0 = 0x000f0f; //Dead zone=0,Prescaler1=15(0x0f),Prescaler0=15(0x0f)
rTCFG1 = 0x001233; //All interrupt,Mux4=1/2,Mux3=1/4,Mux2=1/8,Mux1=1/16,Mux0=1/16
rTCFG1 = 0x101233; //DMA Mode Timer0,Mux4=1/2,Mux3=1/4,Mux2=1/8,Mux1=1/16,Mux0=1/16
rTCFG1 = 0x201233; //DMA Mode Timer1,Mux4=1/2,Mux3=1/4,Mux2=1/8,Mux1=1/16,Mux0=1/16
rTCFG1 = 0x301233; //DMA Mode Timer2,Mux4=1/2,Mux3=1/4,Mux2=1/8,Mux1=1/16,Mux0=1/16
rTCFG1 = 0x401233; //DMA Mode Timer3,Mux4=1/2,Mux3=1/4,Mux2=1/8,Mux1=1/16,Mux0=1/16
rTCFG1 = 0x501233; //DMA Mode Timer4,Mux4=1/2,Mux3=1/4,Mux2=1/8,Mux1=1/16,Mux0=1/16
//Timer input clock frequency = PCLK/{prescaler value+1}/{divider value}
//{prescaler value} = 0 ~ 255 , {divider value} = 2,4,8,16
rTCNTB0 = 0xffff; //(1/(60MHz/16/16)) * 0xffff (65535) = 0.275s
rTCNTB1 = 0xffff; //(1/(60MHz/16/16)) * 0xffff (65535) = 0.275s
rTCNTB2 = 0xffff; //(1/(60MHz/16/8 )) * 0xffff (65535) = 0.138s
rTCNTB3 = 0xffff; //(1/(60MHz/16/4 )) * 0xffff (65535) = 0.065s
rTCNTB4 = 0xffff; //(1/(60MHz/16/2 )) * 0xffff (65535) = 0.033s
// [22:20] [19:16] [15:12] [11:8] [7:4] [3:0]
// 110 1010 1010 1010 0000 0010
// rTCON = 0x6aaa02; //Auto reload (T0=One-shot), Inverter off, Manual update, Dead zone disable, Stop
rTCON = 0x6aaa0a; //Auto reload, Inverter off, Manual update, Dead zone disable, Stop
// [22:20] [19:16] [15:12] [11:8] [7:4] [3:0]
// 101 1001 1001 1001 0000 0001
rTCON = 0x599901; //Auto reload(T0=One-shot),Inverter off,No operation,Dead zone disable,Start
rTCON = 0x0; //One-shot, Inverter off, No operation, Dead zone disable, Stop
while(variable0 == 0);
Delay(1); //To compensate timer error(<1 tick period)
rTCON = 0x0; //One-shot, Inverter off, No operation, Dead zone disable, Stop
if(variable4==8 && variable3==4 && variable2==2 && variable1==1 && variable0==1)
Uart_Printf("Timer 0,1,2,3,4 DMA Test --> OK\n");
else
Uart_Printf("Timer 0,1,2,3,4 DMA Test --> Fail............\n");
Uart_Printf("Timer0 - %d(1), Timer1 - %d(1), Timer2 - %d(2), Timer3 - %d(4), Timer4 - %d(8)\n",
variable0,variable1,variable2,variable3,variable4);
rINTMSK |= (BIT_TIMER4 | BIT_TIMER3 | BIT_TIMER2 | BIT_TIMER1 | BIT_TIMER0);
}
*/
//================================================
// Watch-dog timer Interrupt Request Test
//================================================
volatile int isWdtInt;
void Test_WDT_IntReq(void)
{
//t_watchdog = 1 / (PCLK / (Prescaler value + 1 ) / Division_factor)
Uart_Printf("[ WatchDog Timer Interrupt Request Test ]\n");
// Uart_Printf("rINTMSK (Before) = 0x%8x\n",rINTMSK);
rINTMSK &= ~(BIT_WDT); //Watch dog Interrupt service is available
// Uart_Printf("rINTMSK (After ) = 0x%8x <== INT_WDT : [9]\n",rINTMSK);
pISR_WDT = (unsigned)Wdt_Int;
isWdtInt = 0;
//If PCLK = 50MHz
rWTCON = ((PCLK/1000000-1)<<8) | (3<<3) | (1<<2); //Prescaler=0x31(49),Clock division 128,Interrupt enable
rWTDAT = 8448 / 4; //Count reload value, 2112(0x840) = 8448(0x2100) / 4(0x4)
rWTCNT = 8448 / 4;
rWTCON = rWTCON | (1<<5); //Watch-dog timer enable
// Uart_Printf("rWTCON = 0x%4x <== 0x313c\n",rWTCON); //0011 0001 0011 1100
while(isWdtInt != 10);
// Uart_Printf("\nrWTCON = 0x%4x <== After 'while(isWdtInt != 10)'\n",rWTCON);
rWTCON = ((PCLK/1000000-1)<<8) | (3<<3) | (1); //Prescaler=0x31(49),Clock division 128,Reset enable
// Uart_Printf("\nrWTCON = 0x%4x <== 0x3119\n",rWTCON);
//Prescaler=0x31[15:8],00[7:6],Watch-dog timer disable[5],Division 128[4:3],Interrupt Disable[2],Reserved[1],Reset enable[0]
//0011 0001 0001 1001
Uart_Printf("\nI will restart after 2 sec.\n");
rWTCNT = 8448 * 2; //16896 (0x4200)
rWTCON = rWTCON | (1<<5); //1/40/128,Watch-dog timer Interrupt enable
while(1);
// Uart_Printf("rINTMSK (Before) = 0x%8x\n",rINTMSK);
rINTMSK |= BIT_WDT; //WDT Interrupt Mask
// Uart_Printf("rINTMSK (After ) = 0x%8x\n",rINTMSK);
}
//---------------------------------------------------------------------
void __irq Wdt_Int(void)
{
rSRCPND = BIT_WDT; //Clear pending bit
rINTPND = BIT_WDT;
rINTPND; //Prevent an double interrupt pending
Uart_Printf("%d ",++isWdtInt);
}⌨️ 快捷键说明
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