serial.h

#ifndef __RT_SERIAL_H__
#define __RT_SERIAL_H__

#ifndef AT91C_BASE_US0
#define AT91C_BASE_US0            (0xFFFC0000) // (US0) Base Address
#endif

#ifndef AT91C_BASE_US1
#define AT91C_BASE_US1            (0xFFFC4000) // (US1) Base Address
#endif

#define AT91C_US_RXRDY			((unsigned int) 0x1 <<  0)	/* US RXRDY Interrupt */
#define AT91C_US_TXRDY			((unsigned int) 0x1 <<  1)	/* US TXRDY Interrupt */
#define AT91C_US_RSTRX			((unsigned int) 0x1 <<  2)	/* US Reset Receiver */
#define AT91C_US_RSTTX			((unsigned int) 0x1 <<  3)	/* US Reset Transmitter */
#define AT91C_US_RXEN			((unsigned int) 0x1 <<  4)	/* US Receiver Enable */
#define AT91C_US_RXDIS			((unsigned int) 0x1 <<  5)	/* US Receiver Disable */
#define AT91C_US_TXEN			((unsigned int) 0x1 <<  6)	/* US Transmitter Enable */
#define AT91C_US_TXDIS			((unsigned int) 0x1 <<  7)	/* US Transmitter Disable */
#define AT91C_US_RSTSTA			((unsigned int) 0x1 <<  8)	/* US Reset Status Bits */

#define AT91C_US_USMODE_NORMAL	((unsigned int) 0x0)		/* USAR) Normal */
#define AT91C_US_USMODE_RS485	((unsigned int) 0x1)		/* USAR) RS485 */
#define AT91C_US_USMODE_HWHSH	((unsigned int) 0x2)		/* USAR) Hardware Handshaking */
#define AT91C_US_USMODE_MODEM	((unsigned int) 0x3)		/* USAR) Modem */
#define AT91C_US_USMODE_ISO7816_0	((unsigned int) 0x4)	/* USAR) ISO7816 protocol: T = 0 */
#define AT91C_US_USMODE_ISO7816_1	((unsigned int) 0x6)	/* USAR) ISO7816 protocol: T = 1 */
#define AT91C_US_USMODE_IRDA	((unsigned int) 0x8)		/* USAR) IrDA */
#define AT91C_US_USMODE_SWHSH	((unsigned int) 0xC)		/* USAR) Software Handshaking */

#define AT91C_US_CLKS_CLOCK		((unsigned int) 0x0 <<  4)	/* USAR) Clock */
#define AT91C_US_CLKS_FDIV1		((unsigned int) 0x1 <<  4)	/* USAR) fdiv1 */
#define AT91C_US_CLKS_SLOW		((unsigned int) 0x2 <<  4)	/* USAR) slow_clock (ARM) */
#define AT91C_US_CLKS_EXT		((unsigned int) 0x3 <<  4)	/* USAR) External (SCK) */

#define AT91C_US_CHRL_5_BITS	((unsigned int) 0x0 <<  6)	/* USAR) Character Length: 5 bits */
#define AT91C_US_CHRL_6_BITS	((unsigned int) 0x1 <<  6)	/* USAR) Character Length: 6 bits */
#define AT91C_US_CHRL_7_BITS	((unsigned int) 0x2 <<  6)	/* USAR) Character Length: 7 bits */
#define AT91C_US_CHRL_8_BITS	((unsigned int) 0x3 <<  6)	/* USAR) Character Length: 8 bits */

#define AT91C_US_PAR_EVEN		((unsigned int) 0x0 <<  9)	/* DBGU Even Parity */
#define AT91C_US_PAR_ODD		((unsigned int) 0x1 <<  9)	/* DBGU Odd Parity */
#define AT91C_US_PAR_SPACE		((unsigned int) 0x2 <<  9)	/* DBGU Parity forced to 0 (Space) */
#define AT91C_US_PAR_MARK		((unsigned int) 0x3 <<  9)	/* DBGU Parity forced to 1 (Mark) */
#define AT91C_US_PAR_NONE		((unsigned int) 0x4 <<  9)	/* DBGU No Parity */
#define AT91C_US_PAR_MULTI_DROP	((unsigned int) 0x6 <<  9)	/* DBGU Multi-drop mode */

#define AT91C_US_NBSTOP_1_BIT	((unsigned int) 0x0 << 12)	/* USART 1 stop bit */
#define AT91C_US_NBSTOP_15_BIT	((unsigned int) 0x1 << 12)	/* USART Asynchronous (SYNC=0) 2 stop bits Synchronous (SYNC=1) 2 stop bits */
#define AT91C_US_NBSTOP_2_BIT	((unsigned int) 0x2 << 12)	/* USART 2 stop bits */

#define MCK		48054857
#define BR    	115200			/* Baud Rate */
#define BRD  	(MCK/16/BR)		/* Baud Rate Divisor */

#endif