MCP2515 CAN library
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Diff: mcp2515_defs.h
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- 0:d8f50b1e384f
diff -r 000000000000 -r d8f50b1e384f mcp2515_defs.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mcp2515_defs.h Sat Jan 30 08:46:04 2010 +0000 @@ -0,0 +1,215 @@ +/* from Microchip Example */ + +#ifndef MCP2515_DEFS_H_ +#define MCP2515_DEFS_H_ + +/* +mcp2515_defs.h + +This file contains constants that are specific to the MCP2515. + +Version Date Description +---------------------------------------------------------------------- +v1.00 2003/12/11 Initial release +Copyright 2003 Kimberly Otten Software Consulting + +Changes M. Thomas: +- rename to mcp2515_defs.h +- added handy definitions from kvaser-sample +- status-bits + +*/ + +// Begin mt +#define MCP_SIDH 0 +#define MCP_SIDL 1 +#define MCP_EID8 2 +#define MCP_EID0 3 + +#define MCP_TXB_EXIDE_M 0x08 /* In TXBnSIDL */ +#define MCP_DLC_MASK 0x0F /* 4 LSBits */ +#define MCP_RTR_MASK 0x40 /* (1<<6) Bit 6 */ + +#define MCP_RXB_RX_ANY 0x60 +#define MCP_RXB_RX_EXT 0x40 +#define MCP_RXB_RX_STD 0x20 +#define MCP_RXB_RX_STDEXT 0x00 +#define MCP_RXB_RX_MASK 0x60 +#define MCP_RXB_BUKT_MASK (1<<2) + +/* +** Bits in the TXBnCTRL registers. +*/ +#define MCP_TXB_TXBUFE_M 0x80 +#define MCP_TXB_ABTF_M 0x40 +#define MCP_TXB_MLOA_M 0x20 +#define MCP_TXB_TXERR_M 0x10 +#define MCP_TXB_TXREQ_M 0x08 +#define MCP_TXB_TXIE_M 0x04 +#define MCP_TXB_TXP10_M 0x03 + +#define MCP_TXB_RTR_M 0x40 // In TXBnDLC +#define MCP_RXB_IDE_M 0x08 // In RXBnSIDL +#define MCP_RXB_RTR_M 0x40 // In RXBnDLC + +#define MCP_STAT_RXIF_MASK (0x03) +#define MCP_STAT_RX0IF (1<<0) +#define MCP_STAT_RX1IF (1<<1) + +#define MCP_EFLG_RX1OVR (1<<7) +#define MCP_EFLG_RX0OVR (1<<6) +#define MCP_EFLG_TXBO (1<<5) +#define MCP_EFLG_TXEP (1<<4) +#define MCP_EFLG_RXEP (1<<3) +#define MCP_EFLG_TXWAR (1<<2) +#define MCP_EFLG_RXWAR (1<<1) +#define MCP_EFLG_EWARN (1<<0) +#define MCP_EFLG_ERRORMASK (0xF8) /* 5 MS-Bits */ + +// End mt + + +// Define MCP2515 register addresses + +#define MCP_RXF0SIDH 0x00 +#define MCP_RXF0SIDL 0x01 +#define MCP_RXF0EID8 0x02 +#define MCP_RXF0EID0 0x03 +#define MCP_RXF1SIDH 0x04 +#define MCP_RXF1SIDL 0x05 +#define MCP_RXF1EID8 0x06 +#define MCP_RXF1EID0 0x07 +#define MCP_RXF2SIDH 0x08 +#define MCP_RXF2SIDL 0x09 +#define MCP_RXF2EID8 0x0A +#define MCP_RXF2EID0 0x0B +#define MCP_CANSTAT 0x0E +#define MCP_CANCTRL 0x0F +#define MCP_RXF3SIDH 0x10 +#define MCP_RXF3SIDL 0x11 +#define MCP_RXF3EID8 0x12 +#define MCP_RXF3EID0 0x13 +#define MCP_RXF4SIDH 0x14 +#define MCP_RXF4SIDL 0x15 +#define MCP_RXF4EID8 0x16 +#define MCP_RXF4EID0 0x17 +#define MCP_RXF5SIDH 0x18 +#define MCP_RXF5SIDL 0x19 +#define MCP_RXF5EID8 0x1A +#define MCP_RXF5EID0 0x1B +#define MCP_TEC 0x1C +#define MCP_REC 0x1D +#define MCP_RXM0SIDH 0x20 +#define MCP_RXM0SIDL 0x21 +#define MCP_RXM0EID8 0x22 +#define MCP_RXM0EID0 0x23 +#define MCP_RXM1SIDH 0x24 +#define MCP_RXM1SIDL 0x25 +#define MCP_RXM1EID8 0x26 +#define MCP_RXM1EID0 0x27 +#define MCP_CNF3 0x28 +#define MCP_CNF2 0x29 +#define MCP_CNF1 0x2A +#define MCP_CANINTE 0x2B +#define MCP_CANINTF 0x2C +#define MCP_EFLG 0x2D +#define MCP_TXB0CTRL 0x30 +#define MCP_TXB1CTRL 0x40 +#define MCP_TXB2CTRL 0x50 +#define MCP_RXB0CTRL 0x60 +#define MCP_RXB0SIDH 0x61 +#define MCP_RXB1CTRL 0x70 +#define MCP_RXB1SIDH 0x71 + + +#define MCP_TX_INT 0x1C // Enable all transmit interrupts +#define MCP_TX01_INT 0x0C // Enable TXB0 and TXB1 interrupts +#define MCP_RX_INT 0x03 // Enable receive interrupts +#define MCP_NO_INT 0x00 // Disable all interrupts + +#define MCP_TX01_MASK 0x14 +#define MCP_TX_MASK 0x54 + +// Define SPI Instruction Set + +#define MCP_WRITE 0x02 + +#define MCP_READ 0x03 + +#define MCP_BITMOD 0x05 + +#define MCP_LOAD_TX0 0x40 +#define MCP_LOAD_TX1 0x42 +#define MCP_LOAD_TX2 0x44 + +#define MCP_RTS_TX0 0x81 +#define MCP_RTS_TX1 0x82 +#define MCP_RTS_TX2 0x84 +#define MCP_RTS_ALL 0x87 + +#define MCP_READ_RX0 0x90 +#define MCP_READ_RX1 0x94 + +#define MCP_READ_STATUS 0xA0 + +#define MCP_RX_STATUS 0xB0 + +#define MCP_RESET 0xC0 + + +// CANCTRL Register Values + +#define MODE_NORMAL 0x00 +#define MODE_SLEEP 0x20 +#define MODE_LOOPBACK 0x40 +#define MODE_LISTENONLY 0x60 +#define MODE_CONFIG 0x80 +#define MODE_POWERUP 0xE0 +#define MODE_MASK 0xE0 +#define ABORT_TX 0x10 +#define MODE_ONESHOT 0x08 +#define CLKOUT_ENABLE 0x04 +#define CLKOUT_DISABLE 0x00 +#define CLKOUT_PS1 0x00 +#define CLKOUT_PS2 0x01 +#define CLKOUT_PS4 0x02 +#define CLKOUT_PS8 0x03 + + +// CNF1 Register Values + +#define SJW1 0x00 +#define SJW2 0x40 +#define SJW3 0x80 +#define SJW4 0xC0 + + +// CNF2 Register Values + +#define BTLMODE 0x80 +#define SAMPLE_1X 0x00 +#define SAMPLE_3X 0x40 + + +// CNF3 Register Values + +#define SOF_ENABLE 0x80 +#define SOF_DISABLE 0x00 +#define WAKFIL_ENABLE 0x40 +#define WAKFIL_DISABLE 0x00 + + +// CANINTF Register Bits + +#define MCP_RX0IF 0x01 +#define MCP_RX1IF 0x02 +#define MCP_TX0IF 0x04 +#define MCP_TX1IF 0x08 +#define MCP_TX2IF 0x10 +#define MCP_ERRIF 0x20 +#define MCP_WAKIF 0x40 +#define MCP_MERRF 0x80 + + + +#endif