#include "LPC214x.H"
#include "stdio.h"
//CCLK=12xM=12x5=60MHZ
//PCLK=CCLK (VPBDIV=0x00)
#define RDR 0x01
#define THRE 0x20
#define RDA 0x04
void Timer0ISR(void)__irq;
void Timer1ISR(void)__irq;
void UART0ISR(void)__irq;
void UART1ISR(void)__irq;
void Exint0ISR(void)__irq;
unsigned char rxdat,rxdat1;
int txf,timer0_flag,timer1_flag,eint0_flag;
unsigned char a = 0;
unsigned short int fdiv;
void Init_PLL()
{
//System Clock
//PLLCFG = 0x00100100; //p=2 (PSEL=01) and m=5-1 (MSEL=00100)
// PLL0CFG = 0x00; //0x0010 0010 //48Mhz m = 4-1 = 3 i.e 00010
PLL0CFG = 0x23; //60Mhz m=5-1=4 i.e 00011
PLL0CON = 0x01;
PLL0FEED = 0xaa;
PLL0FEED = 0x55;
while((PLL0STAT & 0x400) == 0);
PLL0CON = 0x03;
PLL0FEED = 0xaa;
PLL0FEED = 0x55;
//USB clock
//PLL1CFG = 0x00100011; //p=2 (PSEL=01) and m=4-1 (MSEL=00011)
PLL1CFG = 0x23;
PLL1CON = 0x01;
PLL1FEED = 0xaa;
PLL1FEED = 0x55;
while((PLL1STAT & 0x400) == 0);
PLL1CON = 0x03;
PLL1FEED = 0xaa;
PLL1FEED = 0x55;
}
void Init_MAM(void)
{
MAMTIM = 0x00000001;
MAMCR = 0x02;
}
void Init_VPB(void)
{
VPBDIV = 0x00;
}
void Init_TIMER0(void)
{
T0IR = 0xff; //clr the pending flags of interrupt
//T0CTCR = 0x00; //timer mode
T0PR = 1000; //prescalar maximum count value keep it 1000 and change T0MR0
T0PC = 0;
T0MCR = 0x0003; //MR0I=interrupt when TC=MR and reset
T0MR0 = 1000; //match the final value (using )
//T0TC = 0;
T0TCR = 0x02; //reset the timer
T0TCR = 0x01; //enable the timer
}
void Init_TIMER1(void)
{
T1IR = 0xff; //clr the pending flags of interrupt
//T1CTCR = 0x00; //timer mode
T1PR = 1000; //prescalar maximum count value keep it 1000 and change T0MR1
T1PC = 0;
T1MCR = 0x0003; //MR0I=interrupt when TC=MR and reset
T1MR0 = 1000; //match the final value (using )
//T1TC = 0;
T1TCR = 0x02; //reset the timer
T1TCR = 0x01; //enable the timer
}
void Init_EXTINT0(void)
{
EXTINT = 0x01; //clr interrupt bit
INTWAKE = 0x0000;
EXTMODE = 0x01; //EINT0 edge sensitive
EXTPOLAR = 0x01; //EINT0 rising edge
}
void Init_UART0(void)
{
U0LCR = 0X83;
U0FDR = 0xa1;
fdiv = ((12000000 * 10)/(16 * 9600 * 11));
U0DLM= fdiv/256;
U0DLL = fdiv%256;
U0LCR = 0x03;
U0FCR = 0x01;
U0IER = 0x00000003; //RI and TI interrupt
}
void Init_UART1(void)
{
/* formula for BR calculation: =PCLK x mulval /
[(16 x (16 x U0DLM + U0DLL))x(MULVAL + DIVADDVAL)
9609 = 48Mhz x 5 / [(16 x (16 x 0 + 223)) x (5 + 7)] */
U1LCR = 0X83;
U1FDR = 0xa1;
fdiv = ((12000000 * 10)/(16 * 9600 * 11));
U1DLM= fdiv/256;
U1DLL = fdiv%256;
U1LCR = 0x03;
U1FCR = 0x01;
U1IER = 0x00000003; //RI and TI interrupt
}
void Init_VIC(void)
{
VICIntSelect = 0x00000000; //select timer0 interrupt ad IRQ i.e bit 4=0
//VICDefVectAddr = (unsigned long int)timer0ISR; do not use when more than one interrupts are used
VICVectAddr0 = (unsigned long int)Timer0ISR;
VICVectCntl0 = 0x24; //bit 5 is enabled the slot to produce unique interrupt address for enabled timer0 interrupt
VICIntEnable = 0x00000010; //enable timer0 interrupt
//VICDefVectAddr = (unsigned long int)timer0ISR; do not use when more than one interrupts are used
VICVectAddr1 = (unsigned long int)Timer1ISR;
VICVectCntl1 = 0x25; //bit 5 is enabled the slot to produce unique interrupt address for enabled timer0 interrupt
VICIntEnable |= 0x00000020; //enable timer0 interrupt
VICVectCntl2 = 0x26;
VICVectAddr2 = (unsigned long int)UART0ISR;
VICIntEnable |= 0x00000040; //enable UART0 interrupt
VICVectAddr3 = (unsigned long int)UART1ISR;
VICVectCntl3 = 0x27;
VICIntEnable |= 0x00000080;
VICIntEnable |= 0x00004000; //enable EINT0 interrupt
VICIntSelect = 0x00000001; //select EINT0 interrupt as IRQ i.e bit 14=0
VICVectAddr4 = (unsigned long int)Exint0ISR;
VICVectCntl4 = 0x2e;
}
void Init_PORT(void)
{
PINSEL0 = 0x00050005; //p0.15 and p0.7 as GPIO P0.1=RXD P0.0=TXD
PINSEL1 = 0x00000000; //p0.16 as EINT0
PINSEL2 = 0x00000000;
IO0DIR = 0xffffffff;
IO0CLR = 0xffffffff;
}
void delay(void)
{
unsigned short int i;
for(i=0;i<50000;i++);
}
int main(void)
{
Init_PLL();
Init_MAM();
Init_VPB();
Init_PORT();
Init_TIMER0();
Init_TIMER1();
Init_EXTINT0();
Init_UART0();
Init_UART1();
Init_VIC();
while(1)
{
if(rxdat == 'A')
{
IO0SET |= 0x00004000;
while(!(U0LSR & THRE));
U0THR = rxdat;
rxdat = 255;
}
if(rxdat == 'B')
{
IO0CLR |= 0x00004000;
while(!(U0LSR & THRE));
U0THR = rxdat;
rxdat = 255;
}
}
}
void Timer0ISR(void)__irq
{
T0IR = 0xff;
if(timer0_flag)
IO0SET |= 0x00001000;
else
IO0CLR |= 0x00001000;
timer0_flag = ~timer0_flag;
VICVectAddr = 0x00;
}
void Timer1ISR(void)__irq
{
T1IR = 0xff;
if(timer1_flag)
IO0SET |= 0x000000010;
else
IO0CLR |= 0x000000010;
timer1_flag = ~timer1_flag;
VICVectAddr = 0x00;
}
void Exint0ISR(void)__irq
{
EXTINT = 0x01;
if(eint0_flag)
IO0SET |= 0x00000080;
else
IO0CLR |= 0x00000080;
eint0_flag = ~eint0_flag;
VICVectAddr = 0x00;
}
void UART0ISR(void)__irq
{
if(U0IIR & RDA)
rxdat = U0RBR;
VICVectAddr = 0x00;
}
void UART1ISR(void)__irq
{
if(U1IIR & RDA)
rxdat = U1RBR;
VICVectAddr = 0x00;
}
#include "stdio.h"
//CCLK=12xM=12x5=60MHZ
//PCLK=CCLK (VPBDIV=0x00)
#define RDR 0x01
#define THRE 0x20
#define RDA 0x04
void Timer0ISR(void)__irq;
void Timer1ISR(void)__irq;
void UART0ISR(void)__irq;
void UART1ISR(void)__irq;
void Exint0ISR(void)__irq;
unsigned char rxdat,rxdat1;
int txf,timer0_flag,timer1_flag,eint0_flag;
unsigned char a = 0;
unsigned short int fdiv;
void Init_PLL()
{
//System Clock
//PLLCFG = 0x00100100; //p=2 (PSEL=01) and m=5-1 (MSEL=00100)
// PLL0CFG = 0x00; //0x0010 0010 //48Mhz m = 4-1 = 3 i.e 00010
PLL0CFG = 0x23; //60Mhz m=5-1=4 i.e 00011
PLL0CON = 0x01;
PLL0FEED = 0xaa;
PLL0FEED = 0x55;
while((PLL0STAT & 0x400) == 0);
PLL0CON = 0x03;
PLL0FEED = 0xaa;
PLL0FEED = 0x55;
//USB clock
//PLL1CFG = 0x00100011; //p=2 (PSEL=01) and m=4-1 (MSEL=00011)
PLL1CFG = 0x23;
PLL1CON = 0x01;
PLL1FEED = 0xaa;
PLL1FEED = 0x55;
while((PLL1STAT & 0x400) == 0);
PLL1CON = 0x03;
PLL1FEED = 0xaa;
PLL1FEED = 0x55;
}
void Init_MAM(void)
{
MAMTIM = 0x00000001;
MAMCR = 0x02;
}
void Init_VPB(void)
{
VPBDIV = 0x00;
}
void Init_TIMER0(void)
{
T0IR = 0xff; //clr the pending flags of interrupt
//T0CTCR = 0x00; //timer mode
T0PR = 1000; //prescalar maximum count value keep it 1000 and change T0MR0
T0PC = 0;
T0MCR = 0x0003; //MR0I=interrupt when TC=MR and reset
T0MR0 = 1000; //match the final value (using )
//T0TC = 0;
T0TCR = 0x02; //reset the timer
T0TCR = 0x01; //enable the timer
}
void Init_TIMER1(void)
{
T1IR = 0xff; //clr the pending flags of interrupt
//T1CTCR = 0x00; //timer mode
T1PR = 1000; //prescalar maximum count value keep it 1000 and change T0MR1
T1PC = 0;
T1MCR = 0x0003; //MR0I=interrupt when TC=MR and reset
T1MR0 = 1000; //match the final value (using )
//T1TC = 0;
T1TCR = 0x02; //reset the timer
T1TCR = 0x01; //enable the timer
}
void Init_EXTINT0(void)
{
EXTINT = 0x01; //clr interrupt bit
INTWAKE = 0x0000;
EXTMODE = 0x01; //EINT0 edge sensitive
EXTPOLAR = 0x01; //EINT0 rising edge
}
void Init_UART0(void)
{
U0LCR = 0X83;
U0FDR = 0xa1;
fdiv = ((12000000 * 10)/(16 * 9600 * 11));
U0DLM= fdiv/256;
U0DLL = fdiv%256;
U0LCR = 0x03;
U0FCR = 0x01;
U0IER = 0x00000003; //RI and TI interrupt
}
void Init_UART1(void)
{
/* formula for BR calculation: =PCLK x mulval /
[(16 x (16 x U0DLM + U0DLL))x(MULVAL + DIVADDVAL)
9609 = 48Mhz x 5 / [(16 x (16 x 0 + 223)) x (5 + 7)] */
U1LCR = 0X83;
U1FDR = 0xa1;
fdiv = ((12000000 * 10)/(16 * 9600 * 11));
U1DLM= fdiv/256;
U1DLL = fdiv%256;
U1LCR = 0x03;
U1FCR = 0x01;
U1IER = 0x00000003; //RI and TI interrupt
}
void Init_VIC(void)
{
VICIntSelect = 0x00000000; //select timer0 interrupt ad IRQ i.e bit 4=0
//VICDefVectAddr = (unsigned long int)timer0ISR; do not use when more than one interrupts are used
VICVectAddr0 = (unsigned long int)Timer0ISR;
VICVectCntl0 = 0x24; //bit 5 is enabled the slot to produce unique interrupt address for enabled timer0 interrupt
VICIntEnable = 0x00000010; //enable timer0 interrupt
//VICDefVectAddr = (unsigned long int)timer0ISR; do not use when more than one interrupts are used
VICVectAddr1 = (unsigned long int)Timer1ISR;
VICVectCntl1 = 0x25; //bit 5 is enabled the slot to produce unique interrupt address for enabled timer0 interrupt
VICIntEnable |= 0x00000020; //enable timer0 interrupt
VICVectCntl2 = 0x26;
VICVectAddr2 = (unsigned long int)UART0ISR;
VICIntEnable |= 0x00000040; //enable UART0 interrupt
VICVectAddr3 = (unsigned long int)UART1ISR;
VICVectCntl3 = 0x27;
VICIntEnable |= 0x00000080;
VICIntEnable |= 0x00004000; //enable EINT0 interrupt
VICIntSelect = 0x00000001; //select EINT0 interrupt as IRQ i.e bit 14=0
VICVectAddr4 = (unsigned long int)Exint0ISR;
VICVectCntl4 = 0x2e;
}
void Init_PORT(void)
{
PINSEL0 = 0x00050005; //p0.15 and p0.7 as GPIO P0.1=RXD P0.0=TXD
PINSEL1 = 0x00000000; //p0.16 as EINT0
PINSEL2 = 0x00000000;
IO0DIR = 0xffffffff;
IO0CLR = 0xffffffff;
}
void delay(void)
{
unsigned short int i;
for(i=0;i<50000;i++);
}
int main(void)
{
Init_PLL();
Init_MAM();
Init_VPB();
Init_PORT();
Init_TIMER0();
Init_TIMER1();
Init_EXTINT0();
Init_UART0();
Init_UART1();
Init_VIC();
while(1)
{
if(rxdat == 'A')
{
IO0SET |= 0x00004000;
while(!(U0LSR & THRE));
U0THR = rxdat;
rxdat = 255;
}
if(rxdat == 'B')
{
IO0CLR |= 0x00004000;
while(!(U0LSR & THRE));
U0THR = rxdat;
rxdat = 255;
}
}
}
void Timer0ISR(void)__irq
{
T0IR = 0xff;
if(timer0_flag)
IO0SET |= 0x00001000;
else
IO0CLR |= 0x00001000;
timer0_flag = ~timer0_flag;
VICVectAddr = 0x00;
}
void Timer1ISR(void)__irq
{
T1IR = 0xff;
if(timer1_flag)
IO0SET |= 0x000000010;
else
IO0CLR |= 0x000000010;
timer1_flag = ~timer1_flag;
VICVectAddr = 0x00;
}
void Exint0ISR(void)__irq
{
EXTINT = 0x01;
if(eint0_flag)
IO0SET |= 0x00000080;
else
IO0CLR |= 0x00000080;
eint0_flag = ~eint0_flag;
VICVectAddr = 0x00;
}
void UART0ISR(void)__irq
{
if(U0IIR & RDA)
rxdat = U0RBR;
VICVectAddr = 0x00;
}
void UART1ISR(void)__irq
{
if(U1IIR & RDA)
rxdat = U1RBR;
VICVectAddr = 0x00;
}
