/*
 *	UART putchar
 */
void putch(char x) {
	while (!(*pUART0_LSR&(1 << 5)))	;
	*pUART0_THR = x;
}

void write(char *p) {
	while(*p)
		putch(*(p++));	
}


fejezet: 
13-25


UARTx_LSR Registers
The UARTx_LSR registers contain UART status information as shown in
Figure 13-9.

UART Line Status Registers (UARTx_LSR)
0 - Full
1 - Both empty
0 - THR not empty
1 - THR empty
0 - No break interrupt
1 - Break interrupt; this
indicates RX was held low
for more than the maximum
word length
BI (Break Interrupt)
THRE (THR Empty)
FE (Framing Error)
0 - No new data
1 - UARTx_RBR holds
new data
OE (Overrun Error)
0 - No overrun
1 - UARTx_RBR overwritten
before read
PE (Parity Error)
0 - No parity error
1 - Parity error
0 - No error
1 - Invalid stop bit error
Reset = 0x0060
RO
UART0:
0xFFC0 0414
UART1:
0xFFC0 2014