lin_driver.h

来自「芯科原厂所有c8051fxx程序的例子。」· C头文件 代码 · 共 129 行

// Copyright (c) 2006 SILICON LABORATORIES, INC.
//
// FILE NAME   : LIN_Driver.h
// TARGET MCU  : C8051F52xA-53xA
// DESCRIPTION : Header file for LIN_Driver.c
//

#ifndef _LIN_DRIVER_H_
#define _LIN_DRIVER_H_


//-----------------------------------------------------------------------------
// Constant Definitions
//-----------------------------------------------------------------------------

// LINCTRL Bit Definitions
#define  STOP     0x80
#define  SLEEP    0x40
#define  TXRX     0x20
#define  DTACK    0x10
#define  RSTINT   0x08
#define  RSTERR   0x04
#define  WUPREQ   0x02
#define  STREQ    0x01

// LINST bits
#define  ACTIVE   0x80
#define  IDLTOUT  0x40
#define  ABORT    0x20
#define  DTREQ    0x10
#define  LININT   0x08
#define  ERROR    0x04
#define  WAKEUP   0x02
#define  DONE     0x01

// LINERR Bits
#define  SYNCH    0x10
#define  PRTY     0x08
#define  TOUT     0x04
#define  CHK      0x02
#define  BITERR   0x01

// LINSIZE Bits
#define  LINSIZE3_0  0x0F
#define  ENCHK       0x80

// LIN Indirect Registers
#define  LINDT1   0x00
#define  LINDT2   0x01
#define  LINDT3   0x02
#define  LINDT4   0x03
#define  LINDT5   0x04
#define  LINDT6   0x05
#define  LINDT7   0x06
#define  LINDT8   0x07
#define  LINCTRL  0x08
#define  LINST    0x09
#define  LINERR   0x0A
#define  LINSIZE  0x0B
#define  LINDIV   0x0C
#define  LINMUL   0x0D
#define  LINID    0x0E

// Return values for l_get_status ()
#define  TX_SUCCESS        0x01
#define  TX_FRAME_ERROR    0x02
#define  TX_TIMEOUT        0x04

// Bitmasks for the frame PID.
#define  FRAME_ID          0x3F
#define  FRAME_PARITY      0xC0


//-----------------------------------------------------------------------------
// Typedefs
//-----------------------------------------------------------------------------


//-----------------------------------------------------------------------------
// Macros
//-----------------------------------------------------------------------------
#define  _LIN_IREG_READ(addr, target)     { LINADDR = addr; target = LINDATA; }
#define  _LIN_IREG_WRITE(addr, target)    { LINADDR = addr; LINDATA = target; }
#define  _LIN_IREG_SET_BITS(addr, target)  { LINADDR = addr; temp = LINDATA; LINDATA = (temp | target); }
#define  _LIN_IREG_CLEAR_BITS(addr, target)  { LINADDR = addr; temp = LINDATA; LINDATA = (temp & ~target); }


//-----------------------------------------------------------------------------
// Function Prototypes
//-----------------------------------------------------------------------------
void     l_disable_global_interrupts (void);
void     l_restore_global_interrupts (void);
l_u8  l_get_status (void);
void l_clear_status (void);
l_u8  l_read_frame_id (void);
l_u8 l_get_frame_pid (l_u8 frame_id);
l_u8  l_read_frame_data (l_u8 * rx_data);
l_bool l_get_bus_activity (void);
void  l_write_frame_id (l_u8 frame_id);
l_bool l_test_parity (l_u8 frame_pid);
void  l_write_frame_length (l_u8 frame_len);
void  l_write_frame_checksum_type (l_u8 frame_checksum);
void  l_write_frame_data (l_u8 frame_len, l_u8 * frame_data);
void  l_master_transmit_frame (l_u8 frame_id, 
                               l_u8 frame_len,
                               l_u8 * frame_data,
                               l_u8 frame_checksum,
                               l_u8 frame_direction);
void  l_slave_transmit_frame (l_u8 frame_len,
                              l_u8 * frame_data,
                              l_u8 frame_checksum);
void  l_slave_receive_frame (l_u8 frame_len, l_u8 frame_checksum);
void  l_slave_ignore_frame (void);
void  l_slave_go_to_sleep (void);
void  l_transmit_wake_up (void);


//-----------------------------------------------------------------------------
// Extern Variable Declarations
//-----------------------------------------------------------------------------
extern   l_u8  temp;


//-----------------------------------------------------------------------------
// Additional SFR Definitions
//-----------------------------------------------------------------------------


#endif	// _LIN_DRIVER_H_