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Lpc2000

Index last updated: 2026-04-28 23:31 UTC

Message

UART0

2004-11-19 by k10elex

I am using Olimex LPC2106 board with 14.7456Mhz crystal.
i am facing problem with the Serial port. i initialise the register 
for 9600 baudrate but its not working. some times it sending some 
garbage data endless!!
here is the code
it should send A to I and then it should respond to the received byte.
please look in to it.
Thanks,
Ketan

  int temp;  
  char str[10] = "ABCDEFGHI";
  char ch;
	
  /* initialize the serial interface   */
PCONP &= 0x08;
PINSEL0 = 0x00000005;   /* Enable RxD1 and TxD1                     */
U0LCR = 0x83;           /* 8 bits, no Parity, 1 Stop bit            */
U0DLL = 96;             /* 9600 Baud Rate @ 14.7456MHz VPB 
Clock         */
U0LCR = 0x03;           /* DLAB = 0                                 */

for(temp=0;temp < 10;temp++)
{
    while((U0LSR & 0x40) == 0){}
    U0THR = str[temp];
}
while(1)
{
   if (!(U0LSR & 0x01))
   {
    ch = U0RBR;
    while((U0LSR & 0x40) == 0){}
    U0THR = ch;
   }
}

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