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/****************************************************************************
* File: sci.h
*
* Desc: This is the include file for the serial communications interface.
*
* Note: See bsp.h,confdefs.h,system.h for installing drivers into RTEMS.
*
* $Id$
****************************************************************************/
#ifndef _sci_h_
#define _sci_h_
/*******************************************************************************
IOCTL commands for the sci driver.
I'm still working on these...
*******************************************************************************/
#define SCI_IOCTL_PARITY_NONE 0x00 // no parity bit after the data bits
#define SCI_IOCTL_PARITY_ODD 0x01 // parity bit added after data bits
#define SCI_IOCTL_PARITY_EVEN 0x02 // parity bit added after data bits
#define SCI_IOCTL_PARITY_MARK 0x03 // parity bit is lo, -12 volts, logical 1
#define SCI_IOCTL_PARITY_SPACE 0x04 // parity bit is hi, +12 volts, logical 0
#define SCI_IOCTL_PARITY_FORCED_ON 0x03 // parity bit is forced hi or lo
#define SCI_IOCTL_PARITY_FORCED_OFF 0x04 // parity bit is forced hi or lo
#define SCI_IOCTL_BAUD_RATE 0x20 // set the baud rate, arg is baud
#define SCI_IOCTL_DATA_BITS 0x30 // set the data bits, arg is # bits
#define SCI_IOCTL_STOP_BITS_1 0x40 // 1 stop bit after char frame
#define SCI_IOCTL_STOP_BITS_2 0x41 // 2 stop bit after char frame
#define SCI_IOCTL_MODE_NORMAL 0x50 // normal operating mode
#define SCI_IOCTL_MODE_LOOP 0x51 // internal loopback mode
#define SCI_IOCTL_FLOW_NONE 0x60 // no flow control
#define SCI_IOCTL_FLOW_RTS_CTS 0x61 // hardware flow control
#define SCI_IOCTL_SEND_BREAK 0x70 // send an rs-232 break
#define SCI_IOCTL_MODE_1200 0x80 // 1200,n,8,1 download mode
#define SCI_IOCTL_MODE_9600 0x81 // 9600,n,8,1 download mode
#define SCI_IOCTL_MODE_9_BIT 0x82 // 9600,forced,8,1 command mode
/*******************************************************************************
SCI Registers
*******************************************************************************/
// SCI Control Register 0 (SCCR0) $FFFC08
// 8 4 2 1 - 8 4 2 1 - 8 4 2 1 - 8 4 2 1
// ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^
// | | | | | | | | | | | | | | | |
// | | | | | | | | | | | | | | | +----- 0 baud rate divisor
// | | | | | | | | | | | | | | +------- 1 baud rate divisor
// | | | | | | | | | | | | | +--------- 2 baud rate divisor
// | | | | | | | | | | | | +----------- 3 baud rate divisor
// | | | | | | | | | | | |
// | | | | | | | | | | | +--------------- 4 baud rate divisor
// | | | | | | | | | | +----------------- 5 baud rate divisor
// | | | | | | | | | +------------------- 6 baud rate divisor
// | | | | | | | | +--------------------- 7 baud rate divisor
// | | | | | | | |
// | | | | | | | +------------------------- 8 baud rate divisor
// | | | | | | +--------------------------- 9 baud rate divisor
// | | | | | +----------------------------- 10 baud rate divisor
// | | | | +------------------------------- 11 baud rate divisor
// | | | |
// | | | +----------------------------------- 12 baud rate divisor
// | | +------------------------------------- 13 unused
// | +--------------------------------------- 14 unused
// +----------------------------------------- 15 unused
// 0 0 0 0 - 0 0 0 0 - 0 0 0 0 - 0 1 0 0 reset value - (64k baud?)
#define SCI_BAUD_57_6K 9
#define SCI_BAUD_38_4K 14
#define SCI_BAUD_19_2K 27
#define SCI_BAUD_9600 55
#define SCI_BAUD_4800 109
#define SCI_BAUD_2400 218
#define SCI_BAUD_1200 437
// SCI Control Register 1 (SCCR1) $FFFC0A
// 8 4 2 1 - 8 4 2 1 - 8 4 2 1 - 8 4 2 1
// ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^
// | | | | | | | | | | | | | | | |
// | | | | | | | | | | | | | | | +----- 0 send a break
// | | | | | | | | | | | | | | +------- 1 rcvr wakeup mode
// | | | | | | | | | | | | | +--------- 2 rcvr enable
// | | | | | | | | | | | | +----------- 3 xmtr enable
// | | | | | | | | | | | |
// | | | | | | | | | | | +--------------- 4 idle line intr enable
// | | | | | | | | | | +----------------- 5 rcvr intr enable
// | | | | | | | | | +------------------- 6 xmit complete intr enable
// | | | | | | | | +--------------------- 7 xmtr intr enable
// | | | | | | | |
// | | | | | | | +------------------------- 8 wakeup on address mark
// | | | | | | +--------------------------- 9 mode 1=9 bits, 0=8 bits
// | | | | | +----------------------------- 10 parity enable 1=on, 0=off
// | | | | +------------------------------- 11 parity type 1=odd, 0=even
// | | | |
// | | | +----------------------------------- 12 idle line select
// | | +------------------------------------- 13 wired-or mode
// | +--------------------------------------- 14 loop mode
// +----------------------------------------- 15 unused
// 0 0 0 0 - 0 0 0 0 - 0 0 0 0 - 0 0 0 0 reset value
#define SCI_SEND_BREAK 0x0001 // 0000-0000-0000-0001
#define SCI_RCVR_WAKEUP 0x0002 // 0000-0000-0000-0010
#define SCI_ENABLE_RCVR 0x0004 // 0000-0000-0000-0100
#define SCI_ENABLE_XMTR 0x0008 // 0000-0000-0000-1000
#define SCI_DISABLE_RCVR 0xFFFB // 1111-1111-1111-1011
#define SCI_DISABLE_XMTR 0xFFF7 // 1111-1111-1111-0111
#define SCI_ENABLE_INT_IDLE 0x0010 // 0000-0000-0001-0000
#define SCI_ENABLE_INT_RX 0x0020 // 0000-0000-0010-0000
#define SCI_ENABLE_INT_TX_DONE 0x0040 // 0000-0000-0100-0000
#define SCI_ENABLE_INT_TX 0x0080 // 0000-0000-1000-0000
#define SCI_DISABLE_INT_ALL 0xFF00 // 1111-1111-0000-0000 ???
#define SCI_DISABLE_INT_RX 0xFFDF // 1111-1111-1101-1111
#define SCI_CLEAR_RX_INT 0xFFBF // 1111-1111-1011-1111
#define SCI_DISABLE_INT_TX 0xFF7F // 1111-1111-0111-1111
#define SCI_CLEAR_TDRE 0xFEFF // 1111-1110-1111-1111
#define SCI_RCVR_WAKE_ON_MARK 0x0100 // 0000-0001-0000-0000
#define SCI_9_DATA_BITS 0x0200 // 0000-0010-0000-0000
#define SCI_PARITY_ENABLE 0x0400 // 0000-0100-0000-0000
#define SCI_PARITY_ODD 0x0800 // 0000-1000-0000-0000
#define SCI_RCVR_WAKE_ON_IDLE 0xFEFF // 1111-1110-1111-1111
#define SCI_8_DATA_BITS 0xFDFF // 1111-1101-1111-1111
#define SCI_PARITY_DISABLE 0xFBFF // 1111-1011-1111-1111
#define SCI_PARITY_EVEN 0xF7FF // 1111-0111-1111-1111
#define SCI_PARITY_NONE 0xF3FF // 1111-0011-1111-1111
#define SCI_IDLE_LINE_LONG 0x1000 // 0001-0000-0000-0000
#define SCI_TXD_OPEN_DRAIN 0x2000 // 0010-0000-0000-0000
#define SCI_LOOPBACK_MODE 0x4000 // 0100-0000-0000-0000
#define SCI_SCCR1_UNUSED 0x8000 // 1000-0000-0000-0000
// SCI Status Register (SCSR) $FFFC0C
// 8 4 2 1 - 8 4 2 1 - 8 4 2 1 - 8 4 2 1
// ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^
// | | | | | | | | | | | | | | | |
// | | | | | | | | | | | | | | | +----- 0 PF - parity error
// | | | | | | | | | | | | | | +------- 1 FE - framing error
// | | | | | | | | | | | | | +--------- 2 NF - noise flag
// | | | | | | | | | | | | +----------- 3 OR - overrun flag
// | | | | | | | | | | | |
// | | | | | | | | | | | +--------------- 4 IDLE - idle line detected
// | | | | | | | | | | +----------------- 5 RAF - rcvr active flag
// | | | | | | | | | +------------------- 6 RDRF - rcv data reg full
// | | | | | | | | +--------------------- 7 TC - xmt complete flag
// | | | | | | | |
// | | | | | | | +------------------------- 8 TDRE - xmt data reg empty
// | | | | | | +--------------------------- 9 always zero
// | | | | | +----------------------------- 10 always zero
// | | | | +------------------------------- 11 always zero
// | | | |
// | | | +----------------------------------- 12 always zero
// | | +------------------------------------- 13 always zero
// | +--------------------------------------- 14 always zero
// +----------------------------------------- 15 always zero
// 0 0 0 0 - 0 0 0 1 - 1 0 0 0 - 0 0 0 0 reset value
#define SCI_ERROR_PARITY 0x0001 // 0000-0000-0000-0001
#define SCI_ERROR_FRAMING 0x0002 // 0000-0000-0000-0010
#define SCI_ERROR_NOISE 0x0004 // 0000-0000-0000-0100
#define SCI_ERROR_OVERRUN 0x0008 // 0000-0000-0000-1000
#define SCI_IDLE_LINE 0x0010 // 0000-0000-0001-0000
#define SCI_RCVR_ACTIVE 0x0020 // 0000-0000-0010-0000
#define SCI_RCVR_READY 0x0040 // 0000-0000-0100-0000
#define SCI_XMTR_IDLE 0x0080 // 0000-0000-1000-0000
#define SCI_CLEAR_RX_INT 0xFFBF // 1111-1111-1011-1111
#define SCI_XMTR_READY 0x0100 // 0000-0001-0000-0000
#define SCI_CLEAR_TDRE 0xFEFF // 1111-1110-1111-1111
#define SCI_XMTR_AVAILABLE 0x0180 // 0000-0001-1000-0000
/*******************************************************************************
Function prototypes
*******************************************************************************/
#ifdef __cplusplus
extern "C" {
#endif
// look at console_open to see how this is called
const rtems_termios_callbacks * SciGetTermiosHandlers( int32_t polled );
/* SCI interrupt */
//rtems_isr SciIsr( rtems_vector_number vector );
//int32_t SciOpenPolled ( int32_t major, int32_t minor, void *arg );
//int32_t SciOpenInterrupt ( int32_t major, int32_t minor, void *arg );
//int32_t SciClose ( int32_t major, int32_t minor, void *arg );
//int32_t SciWritePolled ( int32_t minor, const char *buf, int32_t len );
//int32_t SciWriteInterrupt( int32_t minor, const char *buf, int32_t len );
//int32_t SciReadPolled ( int32_t minor );
//int32_t SciSetAttributes ( int32_t minor, const struct termios *t );
#ifdef __cplusplus
}
#endif
#endif // _sci_h_
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