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Diffstat (limited to 'libopencm3/include/libopencm3/stm32/can.h')
| -rw-r--r-- | libopencm3/include/libopencm3/stm32/can.h | 679 |
1 files changed, 679 insertions, 0 deletions
diff --git a/libopencm3/include/libopencm3/stm32/can.h b/libopencm3/include/libopencm3/stm32/can.h new file mode 100644 index 0000000..53b0ef5 --- /dev/null +++ b/libopencm3/include/libopencm3/stm32/can.h @@ -0,0 +1,679 @@ +/** @defgroup can_defines CAN defines + +@ingroup STM32F_defines + +@brief <b>libopencm3 Defined Constants and Types for STM32 CAN </b> + +@version 1.0.0 + +@author @htmlonly © @endhtmlonly 2010 Piotr Esden-Tempski <piotr@esden.net> + +@date 12 November 2012 + +LGPL License Terms @ref lgpl_license +*/ +/* + * This file is part of the libopencm3 project. + * + * Copyright (C) 2010 Piotr Esden-Tempski <piotr@esden.net> + * + * This library is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this library. If not, see <http://www.gnu.org/licenses/>. + */ + +#ifndef LIBOPENCM3_CAN_H +#define LIBOPENCM3_CAN_H + +#include <libopencm3/stm32/memorymap.h> +#include <libopencm3/cm3/common.h> + +/**@{*/ + +/* --- Convenience macros -------------------------------------------------- */ + +/* CAN register base addresses (for convenience) */ +/*****************************************************************************/ +/** @defgroup can_reg_base CAN register base address +@ingroup can_defines + +@{*/ +#define CAN1 BX_CAN1_BASE +#define CAN2 BX_CAN2_BASE +/**@}*/ + +/* --- CAN registers ------------------------------------------------------- */ + +/* CAN master control register (CAN_MCR) */ +#define CAN_MCR(can_base) MMIO32(can_base + 0x000) +/* CAN master status register (CAN_MSR) */ +#define CAN_MSR(can_base) MMIO32(can_base + 0x004) +/* CAN transmit status register (CAN_TSR) */ +#define CAN_TSR(can_base) MMIO32(can_base + 0x008) + +/* CAN receive FIFO 0 register (CAN_RF0R) */ +#define CAN_RF0R(can_base) MMIO32(can_base + 0x00C) +/* CAN receive FIFO 1 register (CAN_RF1R) */ +#define CAN_RF1R(can_base) MMIO32(can_base + 0x010) + +/* CAN interrupt enable register (CAN_IER) */ +#define CAN_IER(can_base) MMIO32(can_base + 0x014) +/* CAN error status register (CAN_ESR) */ +#define CAN_ESR(can_base) MMIO32(can_base + 0x018) +/* CAN bit timing register (CAN_BTR) */ +#define CAN_BTR(can_base) MMIO32(can_base + 0x01C) + +/* Registers in the offset range 0x020 to 0x17F are reserved. */ + +/* --- CAN mailbox registers ----------------------------------------------- */ + +/* CAN mailbox / FIFO register offsets */ +#define CAN_MBOX0 0x180 +#define CAN_MBOX1 0x190 +#define CAN_MBOX2 0x1A0 +#define CAN_FIFO0 0x1B0 +#define CAN_FIFO1 0x1C0 + +/* CAN TX mailbox identifier register (CAN_TIxR) */ +#define CAN_TIxR(can_base, mbox) MMIO32(can_base + mbox + 0x0) +#define CAN_TI0R(can_base) CAN_TIxR(can_base, CAN_MBOX0) +#define CAN_TI1R(can_base) CAN_TIxR(can_base, CAN_MBOX1) +#define CAN_TI2R(can_base) CAN_TIxR(can_base, CAN_MBOX2) + +/* CAN mailbox data length control and time stamp register (CAN_TDTxR) */ +#define CAN_TDTxR(can_base, mbox) MMIO32(can_base + mbox + 0x4) +#define CAN_TDT0R(can_base) CAN_TDTxR(can_base, CAN_MBOX0) +#define CAN_TDT1R(can_base) CAN_TDTxR(can_base, CAN_MBOX1) +#define CAN_TDT2R(can_base) CAN_TDTxR(can_base, CAN_MBOX2) + +/* CAN mailbox data low register (CAN_TDLxR) */ +#define CAN_TDLxR(can_base, mbox) MMIO32(can_base + mbox + 0x8) +#define CAN_TDL0R(can_base) CAN_TDLxR(can_base, CAN_MBOX0) +#define CAN_TDL1R(can_base) CAN_TDLxR(can_base, CAN_MBOX1) +#define CAN_TDL2R(can_base) CAN_TDLxR(can_base, CAN_MBOX2) + +/* CAN mailbox data high register (CAN_TDHxR) */ +#define CAN_TDHxR(can_base, mbox) MMIO32(can_base + mbox + 0xC) +#define CAN_TDH0R(can_base) CAN_TDHxR(can_base, CAN_MBOX0) +#define CAN_TDH1R(can_base) CAN_TDHxR(can_base, CAN_MBOX1) +#define CAN_TDH2R(can_base) CAN_TDHxR(can_base, CAN_MBOX2) + +/* CAN RX FIFO identifier register (CAN_RIxR) */ +#define CAN_RIxR(can_base, fifo) MMIO32(can_base + fifo + 0x0) +#define CAN_RI0R(can_base) CAN_RIxR(can_base, CAN_FIFO0) +#define CAN_RI1R(can_base) CAN_RIxR(can_base, CAN_FIFO1) + +/* CAN RX FIFO mailbox data length control & time stamp register (CAN_RDTxR) */ +#define CAN_RDTxR(can_base, fifo) MMIO32(can_base + fifo + 0x4) +#define CAN_RDT0R(can_base) CAN_RDTxR(can_base, CAN_FIFO0) +#define CAN_RDT1R(can_base) CAN_RDTxR(can_base, CAN_FIFO1) + +/* CAN RX FIFO mailbox data low register (CAN_RDLxR) */ +#define CAN_RDLxR(can_base, fifo) MMIO32(can_base + fifo + 0x8) +#define CAN_RDL0R(can_base) CAN_RDLxR(can_base, CAN_FIFO0) +#define CAN_RDL1R(can_base) CAN_RDLxR(can_base, CAN_FIFO1) + +/* CAN RX FIFO mailbox data high register (CAN_RDHxR) */ +#define CAN_RDHxR(can_base, fifo) MMIO32(can_base + fifo + 0xC) +#define CAN_RDH0R(can_base) CAN_RDHxR(can_base, CAN_FIFO0) +#define CAN_RDH1R(can_base) CAN_RDHxR(can_base, CAN_FIFO1) + +/* --- CAN filter registers ------------------------------------------------ */ + +/* CAN filter master register (CAN_FMR) */ +#define CAN_FMR(can_base) MMIO32(can_base + 0x200) + +/* CAN filter mode register (CAN_FM1R) */ +#define CAN_FM1R(can_base) MMIO32(can_base + 0x204) + +/* Register offset 0x208 is reserved. */ + +/* CAN filter scale register (CAN_FS1R) */ +#define CAN_FS1R(can_base) MMIO32(can_base + 0x20C) + +/* Register offset 0x210 is reserved. */ + +/* CAN filter FIFO assignement register (CAN_FFA1R) */ +#define CAN_FFA1R(can_base) MMIO32(can_base + 0x214) + +/* Register offset 0x218 is reserved. */ + +/* CAN filter activation register (CAN_FA1R) */ +#define CAN_FA1R(can_base) MMIO32(can_base + 0x21C) + +/* Register offset 0x220 is reserved. */ + +/* Registers with offset 0x224 to 0x23F are reserved. */ + +/* CAN filter bank registers (CAN_FiRx) */ +/* + * Connectivity line devices have 28 banks so the bank ID spans 0..27 + * all other devices have 14 banks so the bank ID spans 0..13. + */ +#define CAN_FiR1(can_base, bank) MMIO32(can_base + 0x240 + \ + (bank * 0x8) + 0x0) +#define CAN_FiR2(can_base, bank) MMIO32(can_base + 0x240 + \ + (bank * 0x8) + 0x4) + +/* --- CAN_MCR values ------------------------------------------------------ */ + +/* 31:17 Reserved, forced by hardware to 0 */ + +/* DBF: Debug freeze */ +#define CAN_MCR_DBF (1 << 16) + +/* RESET: bxCAN software master reset */ +#define CAN_MCR_RESET (1 << 15) + +/* 14:8 Reserved, forced by hardware to 0 */ + +/* TTCM: Time triggered communication mode */ +#define CAN_MCR_TTCM (1 << 7) + +/* ABOM: Automatic bus-off management */ +#define CAN_MCR_ABOM (1 << 6) + +/* AWUM: Automatic wakeup mode */ +#define CAN_MCR_AWUM (1 << 5) + +/* NART: No automatic retransmission */ +#define CAN_MCR_NART (1 << 4) + +/* RFLM: Receive FIFO locked mode */ +#define CAN_MCR_RFLM (1 << 3) + +/* TXFP: Transmit FIFO priority */ +#define CAN_MCR_TXFP (1 << 2) + +/* SLEEP: Sleep mode request */ +#define CAN_MCR_SLEEP (1 << 1) + +/* INRQ: Initialization request */ +#define CAN_MCR_INRQ (1 << 0) + +/* --- CAN_MSR values ------------------------------------------------------ */ + +/* 31:12 Reserved, forced by hardware to 0 */ + +/* RX: CAN Rx signal */ +#define CAN_MSR_RX (1 << 11) + +/* SAMP: Last sample point */ +#define CAN_MSR_SAMP (1 << 10) + +/* RXM: Receive mode */ +#define CAN_MSR_RXM (1 << 9) + +/* TXM: Transmit mode */ +#define CAN_MSR_TXM (1 << 8) + +/* 7:5 Reserved, forced by hardware to 0 */ + +/* SLAKI: Sleep acknowledge interrupt */ +#define CAN_MSR_SLAKI (1 << 4) + +/* WKUI: Wakeup interrupt */ +#define CAN_MSR_WKUI (1 << 3) + +/* ERRI: Error interrupt */ +#define CAN_MSR_ERRI (1 << 2) + +/* SLAK: Sleep acknowledge */ +#define CAN_MSR_SLAK (1 << 1) + +/* INAK: Initialization acknowledge */ +#define CAN_MSR_INAK (1 << 0) + +/* --- CAN_TSR values ------------------------------------------------------ */ + +/* LOW2: Lowest priority flag for mailbox 2 */ +#define CAN_TSR_LOW2 (1 << 31) + +/* LOW1: Lowest priority flag for mailbox 1 */ +#define CAN_TSR_LOW1 (1 << 30) + +/* LOW0: Lowest priority flag for mailbox 0 */ +#define CAN_TSR_LOW0 (1 << 29) + +/* TME2: Transmit mailbox 2 empty */ +#define CAN_TSR_TME2 (1 << 28) + +/* TME1: Transmit mailbox 1 empty */ +#define CAN_TSR_TME1 (1 << 27) + +/* TME0: Transmit mailbox 0 empty */ +#define CAN_TSR_TME0 (1 << 26) + +/* CODE[1:0]: Mailbox code */ +#define CAN_TSR_CODE_MASK (0x3 << 24) + +/* ABRQ2: Abort request for mailbox 2 */ +#define CAN_TSR_TABRQ2 (1 << 23) + +/* 22:20 Reserved, forced by hardware to 0 */ + +/* TERR2: Transmission error for mailbox 2 */ +#define CAN_TSR_TERR2 (1 << 19) + +/* ALST2: Arbitration lost for mailbox 2 */ +#define CAN_TSR_ALST2 (1 << 18) + +/* TXOK2: Transmission OK for mailbox 2 */ +#define CAN_TSR_TXOK2 (1 << 17) + +/* RQCP2: Request completed mailbox 2 */ +#define CAN_TSR_RQCP2 (1 << 16) + +/* ABRQ1: Abort request for mailbox 1 */ +#define CAN_TSR_ABRQ1 (1 << 15) + +/* 14:12 Reserved, forced by hardware to 0 */ + +/* TERR1: Transmission error for mailbox 1 */ +#define CAN_TSR_TERR1 (1 << 11) + +/* ALST1: Arbitration lost for mailbox 1 */ +#define CAN_TSR_ALST1 (1 << 10) + +/* TXOK1: Transmission OK for mailbox 1 */ +#define CAN_TSR_TXOK1 (1 << 9) + +/* RQCP1: Request completed mailbox 1 */ +#define CAN_TSR_RQCP1 (1 << 8) + +/* ABRQ0: Abort request for mailbox 0 */ +#define CAN_TSR_ABRQ0 (1 << 7) + +/* 6:4 Reserved, forced by hardware to 0 */ + +/* TERR0: Transmission error for mailbox 0 */ +#define CAN_TSR_TERR0 (1 << 3) + +/* ALST0: Arbitration lost for mailbox 0 */ +#define CAN_TSR_ALST0 (1 << 2) + +/* TXOK0: Transmission OK for mailbox 0 */ +#define CAN_TSR_TXOK0 (1 << 1) + +/* RQCP0: Request completed mailbox 0 */ +#define CAN_TSR_RQCP0 (1 << 0) + +/* --- CAN_RF0R values ----------------------------------------------------- */ + +/* 31:6 Reserved, forced by hardware to 0 */ + +/* RFOM0: Release FIFO 0 output mailbox */ +#define CAN_RF0R_RFOM0 (1 << 5) + +/* FOVR0: FIFO 0 overrun */ +#define CAN_RF0R_FAVR0 (1 << 4) + +/* FULL0: FIFO 0 full */ +#define CAN_RF0R_FULL0 (1 << 3) + +/* 2 Reserved, forced by hardware to 0 */ + +/* FMP0[1:0]: FIFO 0 message pending */ +#define CAN_RF0R_FMP0_MASK (0x3 << 0) + +/* --- CAN_RF1R values ----------------------------------------------------- */ + +/* 31:6 Reserved, forced by hardware to 0 */ + +/* RFOM1: Release FIFO 1 output mailbox */ +#define CAN_RF1R_RFOM1 (1 << 5) + +/* FOVR1: FIFO 1 overrun */ +#define CAN_RF1R_FAVR1 (1 << 4) + +/* FULL1: FIFO 1 full */ +#define CAN_RF1R_FULL1 (1 << 3) + +/* 2 Reserved, forced by hardware to 0 */ + +/* FMP1[1:0]: FIFO 1 message pending */ +#define CAN_RF1R_FMP1_MASK (0x3 << 0) + +/* --- CAN_IER values ------------------------------------------------------ */ + +/* 32:18 Reserved, forced by hardware to 0 */ + +/* SLKIE: Sleep interrupt enable */ +#define CAN_IER_SLKIE (1 << 17) + +/* WKUIE: Wakeup interrupt enable */ +#define CAN_IER_WKUIE (1 << 16) + +/* ERRIE: Error interrupt enable */ +#define CAN_IER_ERRIE (1 << 15) + +/* 14:12 Reserved, forced by hardware to 0 */ + +/* LECIE: Last error code interrupt enable */ +#define CAN_IER_LECIE (1 << 11) + +/* BOFIE: Bus-off interrupt enable */ +#define CAN_IER_BOFIE (1 << 10) + +/* EPVIE: Error passive interrupt enable */ +#define CAN_IER_EPVIE (1 << 9) + +/* EWGIE: Error warning interrupt enable */ +#define CAN_IER_EWGIE (1 << 8) + +/* 7 Reserved, forced by hardware to 0 */ + +/* FOVIE1: FIFO overrun interrupt enable */ +#define CAN_IER_FOVIE1 (1 << 6) + +/* FFIE1: FIFO full interrupt enable */ +#define CAN_IER_FFIE1 (1 << 5) + +/* FMPIE1: FIFO message pending interrupt enable */ +#define CAN_IER_FMPIE1 (1 << 4) + +/* FOVIE0: FIFO overrun interrupt enable */ +#define CAN_IER_FOVIE0 (1 << 3) + +/* FFIE0: FIFO full interrupt enable */ +#define CAN_IER_FFIE0 (1 << 2) + +/* FMPIE0: FIFO message pending interrupt enable */ +#define CAN_IER_FMPIE0 (1 << 1) + +/* TMEIE: Transmit mailbox empty interrupt enable */ +#define CAN_IER_TMEIE (1 << 0) + +/* --- CAN_ESR values ------------------------------------------------------ */ + +/* REC[7:0]: Receive error counter */ +#define CAN_ESR_REC_MASK (0xF << 24) + +/* TEC[7:0]: Least significant byte of the 9-bit transmit error counter */ +#define CAN_ESR_TEC_MASK (0xF << 16) + +/* 15:7 Reserved, forced by hardware to 0 */ + +/* LEC[2:0]: Last error code */ +#define CAN_ESR_LEC_NO_ERROR (0x0 << 4) +#define CAN_ESR_LEC_STUFF_ERROR (0x1 << 4) +#define CAN_ESR_LEC_FORM_ERROR (0x2 << 4) +#define CAN_ESR_LEC_ACK_ERROR (0x3 << 4) +#define CAN_ESR_LEC_REC_ERROR (0x4 << 4) +#define CAN_ESR_LEC_DOM_ERROR (0x5 << 4) +#define CAN_ESR_LEC_CRC_ERROR (0x6 << 4) +#define CAN_ESR_LEC_SOFT_ERROR (0x7 << 4) +#define CAN_ESR_LEC_MASK (0x7 << 4) + +/* 3 Reserved, forced by hardware to 0 */ + +/* BOFF: Bus-off flag */ +#define CAN_ESR_BOFF (1 << 2) + +/* EPVF: Error passive flag */ +#define CAN_ESR_EPVF (1 << 1) + +/* EWGF: Error warning flag */ +#define CAN_ESR_EWGF (1 << 0) + +/* --- CAN_BTR values ------------------------------------------------------ */ + +/* SILM: Silent mode (debug) */ +#define CAN_BTR_SILM (1 << 31) + +/* LBKM: Loop back mode (debug) */ +#define CAN_BTR_LBKM (1 << 30) + +/* 29:26 Reserved, forced by hardware to 0 */ + +/* SJW[1:0]: Resynchronization jump width */ +#define CAN_BTR_SJW_1TQ (0x0 << 24) +#define CAN_BTR_SJW_2TQ (0x1 << 24) +#define CAN_BTR_SJW_3TQ (0x2 << 24) +#define CAN_BTR_SJW_4TQ (0x3 << 24) +#define CAN_BTR_SJW_MASK (0x3 << 24) +#define CAN_BTR_SJW_SHIFT 24 + +/* 23 Reserved, forced by hardware to 0 */ + +/* TS2[2:0]: Time segment 2 */ +#define CAN_BTR_TS2_1TQ (0x0 << 20) +#define CAN_BTR_TS2_2TQ (0x1 << 20) +#define CAN_BTR_TS2_3TQ (0x2 << 20) +#define CAN_BTR_TS2_4TQ (0x3 << 20) +#define CAN_BTR_TS2_5TQ (0x4 << 20) +#define CAN_BTR_TS2_6TQ (0x5 << 20) +#define CAN_BTR_TS2_7TQ (0x6 << 20) +#define CAN_BTR_TS2_8TQ (0x7 << 20) +#define CAN_BTR_TS2_MASK (0x7 << 20) +#define CAN_BTR_TS2_SHIFT 20 + +/* TS1[3:0]: Time segment 1 */ +#define CAN_BTR_TS1_1TQ (0x0 << 16) +#define CAN_BTR_TS1_2TQ (0x1 << 16) +#define CAN_BTR_TS1_3TQ (0x2 << 16) +#define CAN_BTR_TS1_4TQ (0x3 << 16) +#define CAN_BTR_TS1_5TQ (0x4 << 16) +#define CAN_BTR_TS1_6TQ (0x5 << 16) +#define CAN_BTR_TS1_7TQ (0x6 << 16) +#define CAN_BTR_TS1_8TQ (0x7 << 16) +#define CAN_BTR_TS1_9TQ (0x8 << 16) +#define CAN_BTR_TS1_10TQ (0x9 << 16) +#define CAN_BTR_TS1_11TQ (0xA << 16) +#define CAN_BTR_TS1_12TQ (0xB << 16) +#define CAN_BTR_TS1_13TQ (0xC << 16) +#define CAN_BTR_TS1_14TQ (0xD << 16) +#define CAN_BTR_TS1_15TQ (0xE << 16) +#define CAN_BTR_TS1_16TQ (0xF << 16) +#define CAN_BTR_TS1_MASK (0xF << 16) +#define CAN_BTR_TS1_SHIFT 16 + +/* 15:10 Reserved, forced by hardware to 0 */ + +/* BRP[9:0]: Baud rate prescaler */ +#define CAN_BTR_BRP_MASK (0x1FFUL << 0) + +/* --- CAN_TIxR values ------------------------------------------------------ */ + +/* STID[10:0]: Standard identifier */ +#define CAN_TIxR_STID_MASK (0x7FF << 21) +#define CAN_TIxR_STID_SHIFT 21 + +/* EXID[15:0]: Extended identifier */ +#define CAN_TIxR_EXID_MASK (0x1FFFFFF << 3) +#define CAN_TIxR_EXID_SHIFT 3 + +/* IDE: Identifier extension */ +#define CAN_TIxR_IDE (1 << 2) + +/* RTR: Remote transmission request */ +#define CAN_TIxR_RTR (1 << 1) + +/* TXRQ: Transmit mailbox request */ +#define CAN_TIxR_TXRQ (1 << 0) + +/* --- CAN_TDTxR values ----------------------------------------------------- */ + +/* TIME[15:0]: Message time stamp */ +#define CAN_TDTxR_TIME_MASK (0xFFFF << 15) +#define CAN_TDTxR_TIME_SHIFT 15 + +/* 15:6 Reserved, forced by hardware to 0 */ + +/* TGT: Transmit global time */ +#define CAN_TDTxR_TGT (1 << 5) + +/* 7:4 Reserved, forced by hardware to 0 */ + +/* DLC[3:0]: Data length code */ +#define CAN_TDTxR_DLC_MASK (0xF << 0) +#define CAN_TDTxR_DLC_SHIFT 0 + +/* --- CAN_TDLxR values ----------------------------------------------------- */ + +/* DATA3[7:0]: Data byte 3 */ +/* DATA2[7:0]: Data byte 2 */ +/* DATA1[7:0]: Data byte 1 */ +/* DATA0[7:0]: Data byte 0 */ + +/* --- CAN_TDHxR values ----------------------------------------------------- */ + +/* DATA7[7:0]: Data byte 7 */ +/* DATA6[7:0]: Data byte 6 */ +/* DATA5[7:0]: Data byte 5 */ +/* DATA4[7:0]: Data byte 4 */ + +/* --- CAN_RIxR values ------------------------------------------------------ */ + +/* STID[10:0]: Standard identifier */ +#define CAN_RIxR_STID_MASK (0x7FF) +#define CAN_RIxR_STID_SHIFT 21 + +/* EXID[15:0]: Extended identifier */ +#define CAN_RIxR_EXID_MASK (0x1FFFFFFF) +#define CAN_RIxR_EXID_SHIFT 3 + +/* IDE: Identifier extension */ +#define CAN_RIxR_IDE (1 << 2) + +/* RTR: Remote transmission request */ +#define CAN_RIxR_RTR (1 << 1) + +/* 0 Reserved */ + +/* --- CAN_RDTxR values ----------------------------------------------------- */ + +/* TIME[15:0]: Message time stamp */ +#define CAN_RDTxR_TIME_MASK (0xFFFF << 15) +#define CAN_RDTxR_TIME_SHIFT 15 + +/* FMI[7:0]: Filter match index */ +#define CAN_RDTxR_FMI_MASK (0xFF << 8) +#define CAN_RDTxR_FMI_SHIFT 8 + +/* 7:4 Reserved, forced by hardware to 0 */ + +/* DLC[3:0]: Data length code */ +#define CAN_RDTxR_DLC_MASK (0xF << 0) +#define CAN_RDTxR_DLC_SHIFT 0 + +/* --- CAN_RDLxR values ----------------------------------------------------- */ + +/* DATA3[7:0]: Data byte 3 */ +/* DATA2[7:0]: Data byte 2 */ +/* DATA1[7:0]: Data byte 1 */ +/* DATA0[7:0]: Data byte 0 */ + +/* --- CAN_RDHxR values ----------------------------------------------------- */ + +/* DATA7[7:0]: Data byte 7 */ +/* DATA6[7:0]: Data byte 6 */ +/* DATA5[7:0]: Data byte 5 */ +/* DATA4[7:0]: Data byte 4 */ + +/* --- CAN_FMR values ------------------------------------------------------- */ + +/* 31:14 Reserved, forced to reset value */ + +/* + * CAN2SB[5:0]: CAN2 start bank + * (only on connectivity line devices otherwise reserved) + */ +#define CAN_FMR_CAN2SB_MASK (0x3F << 8) +#define CAN_FMR_CAN2SB_SHIFT 15 + +/* 7:1 Reserved, forced to reset value */ + +/* FINIT: Filter init mode */ +#define CAN_FMR_FINIT (1 << 0) + +/* --- CAN_FM1R values ------------------------------------------------------ */ + +/* 31:28 Reserved, forced by hardware to 0 */ + +/* + * FBMx: Filter mode + * x is 0..27 should be calculated by a helper function making so many macros + * seems like an overkill? + */ + +/* --- CAN_FS1R values ------------------------------------------------------ */ + +/* 31:28 Reserved, forced by hardware to 0 */ + +/* + * FSCx: Filter scale configuration + * x is 0..27 should be calculated by a helper function making so many macros + * seems like an overkill? + */ + +/* --- CAN_FFA1R values ----------------------------------------------------- */ + +/* 31:28 Reserved, forced by hardware to 0 */ + +/* + * FFAx: Filter scale configuration + * x is 0..27 should be calculated by a helper function making so many macros + * seems like an overkill? + */ + +/* --- CAN_FA1R values ------------------------------------------------------ */ + +/* 31:28 Reserved, forced by hardware to 0 */ + +/* + * FACTx: Filter active + * x is 0..27 should be calculated by a helper function making so many macros + * seems like an overkill? + */ + +/* --- CAN_FiRx values ------------------------------------------------------ */ + +/* FB[31:0]: Filter bits */ + +/* --- CAN functions -------------------------------------------------------- */ + +BEGIN_DECLS + +void can_reset(uint32_t canport); +int can_init(uint32_t canport, bool ttcm, bool abom, bool awum, bool nart, + bool rflm, bool txfp, uint32_t sjw, uint32_t ts1, uint32_t ts2, + uint32_t brp, bool loopback, bool silent); + +void can_filter_init(uint32_t canport, uint32_t nr, bool scale_32bit, + bool id_list_mode, uint32_t fr1, uint32_t fr2, + uint32_t fifo, bool enable); +void can_filter_id_mask_16bit_init(uint32_t canport, uint32_t nr, uint16_t id1, + uint16_t mask1, uint16_t id2, + uint16_t mask2, uint32_t fifo, bool enable); +void can_filter_id_mask_32bit_init(uint32_t canport, uint32_t nr, uint32_t id, + uint32_t mask, uint32_t fifo, bool enable); +void can_filter_id_list_16bit_init(uint32_t canport, uint32_t nr, uint16_t id1, + uint16_t id2, uint16_t id3, uint16_t id4, + uint32_t fifo, bool enable); +void can_filter_id_list_32bit_init(uint32_t canport, uint32_t nr, uint32_t id1, + uint32_t id2, uint32_t fifo, bool enable); + +void can_enable_irq(uint32_t canport, uint32_t irq); +void can_disable_irq(uint32_t canport, uint32_t irq); + +int can_transmit(uint32_t canport, uint32_t id, bool ext, bool rtr, + uint8_t length, uint8_t *data); +void can_receive(uint32_t canport, uint8_t fifo, bool release, uint32_t *id, + bool *ext, bool *rtr, uint32_t *fmi, uint8_t *length, + uint8_t *data); + +void can_fifo_release(uint32_t canport, uint8_t fifo); +bool can_available_mailbox(uint32_t canport); +END_DECLS + +#endif |