/*****************************************************************************
|*
|*  MODULE:            regc515c.h
|*
|*    This file contains definitions for the builtin CAN-Bus Controller of
|*    the Siemens c515c controller
|*
****************************************************************************/

#ifndef _REGC515C_H
#define _REGC515C_H

/* define CPU_CLK_10MHZ or CPU_CLK_8MHZ to select the right values for */
/* the bit timing registers */

#define CPU_CLK_10MHZ

/* address of can controller in xmem */
#define CAN_CTRL	0xf700

/* size of message buffer including 1 dummy byte at end */
#define CAN_MSG_SZ	0x10

/* register offset definitions */
#define CR	0
#define SR	1
#define IR	2

#define BT_0	4
#define BT_1	5
#define GMS_0	6
#define GMS_1	7
#define GME_0	8
#define GME_1	9
#define GME_2	0xa
#define GME_3	0xb
#define MSG15MSK_0	0xc
#define MSG15MSK_1	0xd
#define MSG15MSK_2	0xe
#define MSG15MSK_3	0xf

/* register offsets  in message buffer */
#define MCR_0	0
#define MCR_1	1
#define ARB_0	2
#define ARB_1	3
#define ARB_2	4
#define ARB_3	5
#define MCFG	6
/* beginning of message data */
#define DATA	7

/* bits in cntr_x registers */
#define MSGVAL	0x80
#define TXIE	0x20
#define RXIE	0x8
#define INTPND	0x2
#define RMTPND	0x80
#define TXRQST	0x20
#define MSGLST	0x8
#define CPUUPD	0x8
#define NEWDAT	0x2

/* macros for setting and resetting above bits, see Siemens documentation */
#define MCR_BIT_SET(p,x) ((p) = (0xff & ~((x) >> 1)))
#define MCR_BIT_RES(p,x) ((p) = (0xff & ~(x)))

/* direction = transmit in mcfg */
#define DIR_TRANSMIT	0x8

/* constants for bit timing registers */
/* 8 MHZ */
#ifdef CPU_CLK_8MHZ
#define BT_0_125K	0x3
#define BT_1_125K	0x1c
#define BT_0_250K	0x1
#define BT_1_250K	0x1c
#define BT_0_500K	0x0
#define BT_1_500K	0x1c
#define BT_0_1M		0x0
#define BT_1_1M		0x14
#endif
/* dito, 10 MHZ */
#ifdef CPU_CLK_10MHZ
#define BT_0_125K	0x3
#define BT_1_125K	0x1c
#define BT_0_250K	0x1
#define BT_1_250K	0x1c
#define BT_0_500K	0x0
#define BT_1_500K	0x2f
#define BT_0_1M		0x0
#define BT_1_1M		0x25
#endif

/* Control register bits */

#define	CINIT	0x1
#define IE	0x2
#define SIE	0x4
#define EIE	0x8

#define CCE	0x40

/* status register bits */
#define	LEC0	0x1
#define	LEC1	0x2
#define	LEC2	0x4
#define	TXOK	0x8
#define	RXOK	0x10
#define	WAKE	0x20
#define	WARN	0x40
#define	BOFF	0x80


typedef struct can_msg
{
    unsigned char mcr_0;
    unsigned char mcr_1;
    unsigned char arb_0;
    unsigned char arb_1;
    unsigned char arb_2;
    unsigned char arb_3;
    unsigned char mcfg;
    unsigned char data_bytes[8];
    unsigned char dummy;
} *can_msgp;

__xdata __at CAN_CTRL struct
{
    unsigned	char	cr;
    unsigned	char	sr;
    unsigned	char	ir;
    unsigned	char	res0;
    unsigned	char	bt_0;
    unsigned	char	bt_1;
    unsigned	char	gms_0;
    unsigned	char	gms_1;
    unsigned	char	gme_0;
    unsigned	char	gme_1;
    unsigned	char	gme_2;
    unsigned	char	gme_3;
    unsigned	char	msg15msk_0;
    unsigned	char	msg15msk_1;
    unsigned	char	msg15msk_2;
    unsigned	char	msg15msk_3;
    struct	can_msg msgbufs[15];
} can_ctrl;

/* Byte registers in numerical order */

__sfr __at 0x80 P0;
__sfr __at 0x81 SP;
__sfr __at 0x82 DPL;
__sfr __at 0x83 DPH;
__sfr __at 0x86 WDTREL;
__sfr __at 0x87 PCON;
__sfr __at 0x88 TCON;
__sfr __at 0x88 PCON1;
__sfr __at 0x89 TMOD;
__sfr __at 0x8A TL0;
__sfr __at 0x8B TL1;
__sfr __at 0x8C TH0;
__sfr __at 0x8D TH1;
__sfr __at 0x90 P1;
__sfr __at 0x91 XPAGE;
__sfr __at 0x92 DPSEL;
__sfr __at 0x93 SSCCON;
__sfr __at 0x94 STB;
__sfr __at 0x95 SRB;
__sfr __at 0x96 SSCMOD;
__sfr __at 0x98 SCON;
__sfr __at 0x99 SBUF;
__sfr __at 0x9A IEN2;
__sfr __at 0xA0 P2;
__sfr __at 0xA8 IEN0;
__sfr __at 0xA9 IP0;
__sfr __at 0xAA SRELL;
__sfr __at 0xAB SCF;
__sfr __at 0xAC SCIEN;
__sfr __at 0xB0 P3;
__sfr __at 0xB1 SYSCON;
__sfr __at 0xB8 IEN1;
__sfr __at 0xB9 IP1;
__sfr __at 0xBA SRELH;
__sfr __at 0xC0 IRCON;
__sfr __at 0xC1 CCEN;
__sfr __at 0xC2 CCL1;
__sfr __at 0xC3 CCH1;
__sfr __at 0xC4 CCL2;
__sfr __at 0xC5 CCH2;
__sfr __at 0xC6 CCL3;
__sfr __at 0xC7 CCH3;
__sfr __at 0xC8 T2CON;
__sfr __at 0xCA CRCL;
__sfr __at 0xCB CRCH;
__sfr __at 0xCC TL2;
__sfr __at 0xCD TH2;
__sfr __at 0xD0 PSW;
__sfr __at 0xD8 ADCON0;
__sfr __at 0xD9 ADDATH;
__sfr __at 0xDA ADDATL;
__sfr __at 0xDB P6;
__sfr __at 0xDC ADCON1;
__sfr __at 0xE0 ACC;
__sfr __at 0xE8 P4;
__sfr __at 0xF0 B;
__sfr __at 0xF8 P5;
__sfr __at 0xF8 DIR5;
__sfr __at 0xFA P7;


/* defining bits in SFR P0 */
__sbit __at 0x80  P0_0;
__sbit __at 0x81  P0_1;
__sbit __at 0x82  P0_2;
__sbit __at 0x83  P0_3;
__sbit __at 0x84  P0_4;
__sbit __at 0x85  P0_5;
__sbit __at 0x86  P0_6;
__sbit __at 0x87  P0_7;



/* defining bits in SFR PCON1 */
__sbit __at 0x88  IT0;
__sbit __at 0x89  IE0;
__sbit __at 0x8a  IT1;
__sbit __at 0x8b  IE1;
__sbit __at 0x8c  TR0;
__sbit __at 0x8d  TF0;
__sbit __at 0x8e  TR1;
__sbit __at 0x8f  TF1;
__sbit __at 0x8f  EWPD;



/* defining bits in SFR P1 */
__sbit __at 0x90  P1_0;
__sbit __at 0x90  INT3;
__sbit __at 0x91  P1_1;
__sbit __at 0x91  INT4;
__sbit __at 0x92  P1_2;
__sbit __at 0x92  INT5;
__sbit __at 0x93  P1_3;
__sbit __at 0x93  INT6;
__sbit __at 0x94  P1_4;
__sbit __at 0x94  INT2;
__sbit __at 0x95  P1_5;
__sbit __at 0x95  T2EX;
__sbit __at 0x96  P1_6;
__sbit __at 0x96  CLKOUT;
__sbit __at 0x97  P1_7;
__sbit __at 0x97  T2;



/* defining bits in SFR SCON */
__sbit __at 0x98  RI;
__sbit __at 0x99  TI;
__sbit __at 0x9a  RB8;
__sbit __at 0x9b  TB8;
__sbit __at 0x9c  REN;
__sbit __at 0x9d  SM2;
__sbit __at 0x9e  SM1;
__sbit __at 0x9f  SM0;



/* defining bits in SFR P2 */
__sbit __at 0xa0  P2_0;
__sbit __at 0xa1  P2_1;
__sbit __at 0xa2  P2_2;
__sbit __at 0xa3  P2_3;
__sbit __at 0xa4  P2_4;
__sbit __at 0xa5  P2_5;
__sbit __at 0xa6  P2_6;
__sbit __at 0xa7  P2_7;



/* defining bits in SFR IEN0 */
__sbit __at 0xa8  EX0;
__sbit __at 0xa9  ET0;
__sbit __at 0xaa  EX1;
__sbit __at 0xab  ET1;
__sbit __at 0xac  ES;
__sbit __at 0xad  ET2;
__sbit __at 0xae  WDT;
__sbit __at 0xaf  EA;



/* defining bits in SFR P3 */
__sbit __at 0xb0  P3_0;
__sbit __at 0xb0  RXD;
__sbit __at 0xb1  P3_1;
__sbit __at 0xb1  TXD;
__sbit __at 0xb2  P3_2;
__sbit __at 0xb2  INT0;
__sbit __at 0xb3  P3_3;
__sbit __at 0xb3  INT1;
__sbit __at 0xb4  P3_4;
__sbit __at 0xb4  T0;
__sbit __at 0xb5  P3_5;
__sbit __at 0xb5  T1;
__sbit __at 0xb6  P3_6;
__sbit __at 0xb6  WR;
__sbit __at 0xb7  P3_7;
__sbit __at 0xb7  RD;



/* defining bits in SFR IEN1 */
__sbit __at 0xb8  EADC;
__sbit __at 0xb9  EX2;
__sbit __at 0xba  EX3;
__sbit __at 0xbb  EX4;
__sbit __at 0xbc  EX5;
__sbit __at 0xbd  EX6;
__sbit __at 0xbe  SWDT;
__sbit __at 0xbf  EXEN2;



/* defining bits in SFR IRCON */
__sbit __at 0xc0  IADC;
__sbit __at 0xc1  IEX2;
__sbit __at 0xc2  IEX3;
__sbit __at 0xc3  IEX4;
__sbit __at 0xc4  IEX5;
__sbit __at 0xc5  IEX6;
__sbit __at 0xc6  TF2;
__sbit __at 0xc7  EXF2;



/* defining bits in SFR T2CON */
__sbit __at 0xc8  T2I0;
__sbit __at 0xc9  T2I1;
__sbit __at 0xca  T2CM;
__sbit __at 0xcb  T2R0;
__sbit __at 0xcc  T2R1;
__sbit __at 0xcd  I2FR;
__sbit __at 0xce  I3FR;
__sbit __at 0xcf  T2PS;



/* defining bits in SFR PSW */
__sbit __at 0xd0  P;
__sbit __at 0xd1  F1;
__sbit __at 0xd2  OV;
__sbit __at 0xd3  RS0;
__sbit __at 0xd4  RS1;
__sbit __at 0xd5  F0;
__sbit __at 0xd6  AC;
__sbit __at 0xd7  CY;



/* defining bits in SFR ADCON0 */
__sbit __at 0xd8  MX0;
__sbit __at 0xd9  MX1;
__sbit __at 0xda  MX2;
__sbit __at 0xdb  ADM;
__sbit __at 0xdc  BSY;
__sbit __at 0xdd  ADEX;
__sbit __at 0xde  CLK;
__sbit __at 0xdf  BD;



/* defining bits in SFR ACC */
__sbit __at 0xe0  ACC_0;
__sbit __at 0xe1  ACC_1;
__sbit __at 0xe2  ACC_2;
__sbit __at 0xe3  ACC_3;
__sbit __at 0xe4  ACC_4;
__sbit __at 0xe5  ACC_5;
__sbit __at 0xe6  ACC_6;
__sbit __at 0xe7  ACC_7;



/* defining bits in SFR P4 */
__sbit __at 0xe8  P4_0;
__sbit __at 0xe8  ADST;
__sbit __at 0xe9  P4_1;
__sbit __at 0xe9  SCLK;
__sbit __at 0xea  P4_2;
__sbit __at 0xea  SRI;
__sbit __at 0xeb  P4_3;
__sbit __at 0xeb  STO;
__sbit __at 0xec  P4_4;
__sbit __at 0xec  SLS;
__sbit __at 0xed  P4_5;
__sbit __at 0xed  INT8;
__sbit __at 0xee  P4_6;
__sbit __at 0xee  TXDC;
__sbit __at 0xef  P4_7;
__sbit __at 0xef  RXDC;



/* defining bits in SFR B */
__sbit __at 0xf0  B_0;
__sbit __at 0xf1  B_1;
__sbit __at 0xf2  B_2;
__sbit __at 0xf3  B_3;
__sbit __at 0xf4  B_4;
__sbit __at 0xf5  B_5;
__sbit __at 0xf6  B_6;
__sbit __at 0xf7  B_7;



/* defining bits in SFR DIR5 */
__sbit __at 0xf8  P5_0;
__sbit __at 0xf9  P5_1;
__sbit __at 0xfa  P5_2;
__sbit __at 0xfb  P5_3;
__sbit __at 0xfc  P5_4;
__sbit __at 0xfd  P5_5;
__sbit __at 0xfe  P5_6;
__sbit __at 0xff  P5_7;
__sbit __at 0xf8  DIR5_0;
__sbit __at 0xf9  DIR5_1;
__sbit __at 0xfa  DIR5_2;
__sbit __at 0xfb  DIR5_3;
__sbit __at 0xfc  DIR5_4;
__sbit __at 0xfd  DIR5_5;
__sbit __at 0xfe  DIR5_6;
__sbit __at 0xff  DIR5_7;

#endif /* _REGC515C_H */


