#include <tamtypes.h>
#include <stddef.h>

Include dependency graph for sio.h:

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Macros
#define	SIO_LCR 0x1000f100

#define	SIO_LCR_UMODE_8BIT 0x00

#define	SIO_LCR_UMODE_7BIT 0x01

#define	SIO_LCR_USBL_1BIT 0x00

#define	SIO_LCR_USBL_2BITS 0x01

#define	SIO_LCR_UPEN_OFF 0x00

#define	SIO_LCR_UPEN_ON 0x01

#define	SIO_LCR_UEPS_ODD 0x00

#define	SIO_LCR_UEPS_EVEN 0x01

#define	SIO_LSR 0x1000f110

#define	SIO_LSR_DR 0x01

#define	SIO_LSR_OE 0x02

#define	SIO_LSR_PE 0x04

#define	SIO_LSR_FE 0x08

#define	SIO_IER 0x1000f120

#define	SIO_IER_ERDAI 0x01

#define	SIO_IER_ELSI 0x04

#define	SIO_ISR 0x1000f130

#define	SIO_ISR_RX_DATA 0x01

#define	SIO_ISR_TX_EMPTY 0x02

#define	SIO_ISR_RX_ERROR 0x04

#define	SIO_FCR 0x1000f140

#define	SIO_FCR_FRSTE 0x01

#define	SIO_FCR_RFRST 0x02

#define	SIO_FCR_TFRST 0x04

#define	SIO_BGR 0x1000f150

#define	SIO_TXFIFO 0x1000f180

#define	SIO_RXFIFO 0x1000f1c0

#define	SIO_CAUSE_BIT (1 << 12)

Functions
void	sio_init (u32 baudrate, u8 lcr_ueps, u8 lcr_upen, u8 lcr_usbl, u8 lcr_umode)

int	sio_putc (int c)

int	sio_getc (void)

int	sio_getc_block (void)

size_t	sio_write (void *buf, size_t size)

size_t	sio_read (void *buf, size_t size)

int	sio_puts (const char *str)

int	sio_putsn (const char *str)

char *	sio_gets (char *str)

void	sio_flush (void)

Detailed Description

EE Serial I/O

Definition in file sio.h.

Macro Definition Documentation

◆ SIO_LCR

#define SIO_LCR 0x1000f100

Line Control Register.

Definition at line 29 of file sio.h.

◆ SIO_LCR_UMODE_8BIT

#define SIO_LCR_UMODE_8BIT 0x00

UART Mode.

Definition at line 31 of file sio.h.

◆ SIO_LCR_USBL_1BIT

#define SIO_LCR_USBL_1BIT 0x00

UART Stop Bit Length.

Definition at line 34 of file sio.h.

◆ SIO_LCR_UPEN_OFF

#define SIO_LCR_UPEN_OFF 0x00

UART Parity Enable.

Definition at line 37 of file sio.h.

◆ SIO_LCR_UEPS_ODD

#define SIO_LCR_UEPS_ODD 0x00

UART Even Parity Select.

Definition at line 40 of file sio.h.

◆ SIO_LSR

#define SIO_LSR 0x1000f110

Line Status Register.

Definition at line 44 of file sio.h.

◆ SIO_LSR_DR

#define SIO_LSR_DR 0x01

Data Ready. (Not tested)

Definition at line 46 of file sio.h.

◆ SIO_LSR_OE

#define SIO_LSR_OE 0x02

Overrun Error.

Definition at line 48 of file sio.h.

◆ SIO_LSR_PE

#define SIO_LSR_PE 0x04

Parity Error.

Definition at line 50 of file sio.h.

◆ SIO_LSR_FE

#define SIO_LSR_FE 0x08

Framing Error.

Definition at line 52 of file sio.h.

◆ SIO_IER

#define SIO_IER 0x1000f120

Interrupt Enable Register.

Definition at line 55 of file sio.h.

◆ SIO_IER_ERDAI

#define SIO_IER_ERDAI 0x01

Enable Received Data Available Interrupt

Definition at line 57 of file sio.h.

◆ SIO_IER_ELSI

#define SIO_IER_ELSI 0x04

Enable Line Status Interrupt.

Definition at line 59 of file sio.h.

◆ SIO_ISR

#define SIO_ISR 0x1000f130

Interrupt Status Register (?).

Definition at line 62 of file sio.h.

◆ SIO_FCR

#define SIO_FCR 0x1000f140

FIFO Control Register.

Definition at line 68 of file sio.h.

◆ SIO_FCR_FRSTE

#define SIO_FCR_FRSTE 0x01

FIFO Reset Enable.

Definition at line 70 of file sio.h.

◆ SIO_FCR_RFRST

#define SIO_FCR_RFRST 0x02

RX FIFO Reset.

Definition at line 72 of file sio.h.

◆ SIO_FCR_TFRST

#define SIO_FCR_TFRST 0x04

TX FIFO Reset.

Definition at line 74 of file sio.h.

◆ SIO_BGR

#define SIO_BGR 0x1000f150

Baud Rate Control Register.

Definition at line 77 of file sio.h.

◆ SIO_TXFIFO

#define SIO_TXFIFO 0x1000f180

Transmit FIFO.

Definition at line 80 of file sio.h.

◆ SIO_RXFIFO

#define SIO_RXFIFO 0x1000f1c0

Receive FIFO.

Definition at line 82 of file sio.h.

◆ SIO_CAUSE_BIT

#define SIO_CAUSE_BIT (1 << 12)

The bit in the EE cause register which indicates an SIO exception

Definition at line 85 of file sio.h.

Function Documentation

◆ sio_getc_block()

int sio_getc_block ( void )

Same as sio_getc, but blocking. Note that getc should be blocking by default. Ho well.

Definition at line 52 of file sior.c.

◆ sio_write()

size_t sio_write	(	void *	buf,
		size_t	size
	)

Not really much to do in the way of error-handling. sio_putc() already checks to see if there's room in the TX FIFO, and my cable doesn't support hardware flow control.

◆ sio_read()

size_t sio_read	(	void *	buf,
		size_t	size
	)

This will read from the serial port until size characters have been read or EOF (RX FIFO is empty).

◆ sio_gets()

char* sio_gets ( char * str )

Will block until it recieves
or \r.

Definition at line 83 of file sior.c.

◆ sio_flush()

void sio_flush ( void )

Flushes the input buffer.

Definition at line 89 of file sior.c.

Macros

Functions