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#include /* LPC214x definitions */

typedef unsigned char uc;

#define RDR 0x01#define THRE 0x20

void uart0_init(){ /* initialize the serial interface */ PINSEL0 = 0x00000005; /* Enable RxD0 and TxD0 */ U0LCR = 0x83; /* 8 bits, no Parity, 1 Stop bit */ U0DLL = 97; /* 9600 Baud Rate @ 15MHz VPB Clock U0DLL = 194 for 30MHz and U0DLM= 0x01; U0DLL = 0x84; at VBP + 60MHz */ U0LCR = 0x03; /* DLAB = 0 */}

uc get_char(){ while (!(U0LSR & RDR)); return (U0RBR);}

void put_char(uc dt){ while(!(U0LSR & THRE)); // Wait until UART0 ready to send character U0THR = dt; // Send character

}

void puts(uc *st){ while(*st) {

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put_char(*st++); }}

int main (void) { uart0_init();

puts("UART0 echo test [press any key]"); while (1) { put_char(get_char()); }}