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nuttx/drivers/can/sja1000.h

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drivers/can/sja1000: Add SJA1000 CAN driver support This driver is based on ESP32 TWAI CAN drivers currently available in Nuttx, and captures the differences currently present across the TWAI drivers for easy future adaption to remaining ESP32 platforms with no loss of support/function. Also provides a generic SJA1000 CAN driver solution that is CPU-architecture independent. Changes: - Low-level driver re-written to allow usage independent of CPU architecture, and support both SJA1000 and TWAI CAN controllers. - Platform-specific settings abstracted away to be provided by board layer. - Support for multiple instances of SJA1000 driver.
2024-02-29 04:22:46 +01:00
/****************************************************************************
* drivers/can/sja1000.h
*
* SJA1000 CAN driver based on esp32c3_twai.h
*
* License header retained from original source.
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
#ifndef __DRIVERS_CAN_SJA1000_H
#define __DRIVERS_CAN_SJA1000_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/* Default interrupts - Exclude data overrun (bit[3]) and brp_div (bit[4])
*/
#define SJA1000_DEFAULT_INTERRUPTS 0xe7
/* Number of standard/extended filters */
#define SJA1000_NFILTERS 1
/* SJA1000_MODE_REG register
* Mode Register
*/
#define SJA1000_MODE_REG (0x00)
/* SJA1000_RX_FILTER_MODE : R/W; bitpos: [3]; default: 0;
* This bit is used to configure the filter mode. 0: Dual filter mode; 1:
* Single filter mode.
*/
#define SJA1000_RX_FILTER_MODE (BIT(3))
#define SJA1000_RX_FILTER_MODE_M \
(SJA1000_RX_FILTER_MODE_V << SJA1000_RX_FILTER_MODE_S)
#define SJA1000_RX_FILTER_MODE_V 0x00000001
#define SJA1000_RX_FILTER_MODE_S 3
/* SJA1000_SELF_TEST_MODE : R/W; bitpos: [2]; default: 0;
* 1: Self test mode. In this mode the TX nodes can perform a successful
* transmission without receiving the acknowledge signal. This mode is often
* used to test a single node with the self reception request command.
*/
#define SJA1000_SELF_TEST_MODE (BIT(2))
#define SJA1000_SELF_TEST_MODE_M \
(SJA1000_SELF_TEST_MODE_V << SJA1000_SELF_TEST_MODE_S)
#define SJA1000_SELF_TEST_MODE_V 0x00000001
#define SJA1000_SELF_TEST_MODE_S 2
/* SJA1000_LISTEN_ONLY_MODE : R/W; bitpos: [1]; default: 0;
* 1: Listen only mode. In this mode the nodes will only receive messages
* from the bus, without generating the acknowledge signal nor updating the
* RX error counter.
*/
#define SJA1000_LISTEN_ONLY_MODE (BIT(1))
#define SJA1000_LISTEN_ONLY_MODE_M \
(SJA1000_LISTEN_ONLY_MODE_V << SJA1000_LISTEN_ONLY_MODE_S)
#define SJA1000_LISTEN_ONLY_MODE_V 0x00000001
#define SJA1000_LISTEN_ONLY_MODE_S 1
/* SJA1000_RESET_MODE : R/W; bitpos: [0]; default: 1;
* This bit is used to configure the operating mode of the SJA1000
* Controller. 1: Reset mode; 0: Operating mode.
*/
#define SJA1000_RESET_MODE (BIT(0))
#define SJA1000_RESET_MODE_M (SJA1000_RESET_MODE_V << SJA1000_RESET_MODE_S)
#define SJA1000_RESET_MODE_V 0x00000001
#define SJA1000_RESET_MODE_S 0
/* SJA1000_CMD_REG register
* Command Register
*/
#define SJA1000_CMD_REG (0x01)
/* SJA1000_SELF_RX_REQ : WO; bitpos: [4]; default: 0;
* Self reception request command. Set the bit to 1 to allow a message be
* transmitted and received simultaneously.
*/
#define SJA1000_SELF_RX_REQ (BIT(4))
#define SJA1000_SELF_RX_REQ_M \
(SJA1000_SELF_RX_REQ_V << SJA1000_SELF_RX_REQ_S)
#define SJA1000_SELF_RX_REQ_V 0x00000001
#define SJA1000_SELF_RX_REQ_S 4
/* SJA1000_CLR_OVERRUN : WO; bitpos: [3]; default: 0;
* Set the bit to 1 to clear the data overrun status bit.
*/
#define SJA1000_CLR_OVERRUN (BIT(3))
#define SJA1000_CLR_OVERRUN_M \
(SJA1000_CLR_OVERRUN_V << SJA1000_CLR_OVERRUN_S)
#define SJA1000_CLR_OVERRUN_V 0x00000001
#define SJA1000_CLR_OVERRUN_S 3
/* SJA1000_RELEASE_BUF : WO; bitpos: [2]; default: 0;
* Set the bit to 1 to release the RX buffer.
*/
#define SJA1000_RELEASE_BUF (BIT(2))
#define SJA1000_RELEASE_BUF_M \
(SJA1000_RELEASE_BUF_V << SJA1000_RELEASE_BUF_S)
#define SJA1000_RELEASE_BUF_V 0x00000001
#define SJA1000_RELEASE_BUF_S 2
/* SJA1000_ABORT_TX : WO; bitpos: [1]; default: 0;
* Set the bit to 1 to cancel a pending transmission request.
*/
#define SJA1000_ABORT_TX (BIT(1))
#define SJA1000_ABORT_TX_M (SJA1000_ABORT_TX_V << SJA1000_ABORT_TX_S)
#define SJA1000_ABORT_TX_V 0x00000001
#define SJA1000_ABORT_TX_S 1
/* SJA1000_TX_REQ : WO; bitpos: [0]; default: 0;
* Set the bit to 1 to allow the driving nodes start transmission.
*/
#define SJA1000_TX_REQ (BIT(0))
#define SJA1000_TX_REQ_M (SJA1000_TX_REQ_V << SJA1000_TX_REQ_S)
#define SJA1000_TX_REQ_V 0x00000001
#define SJA1000_TX_REQ_S 0
/* SJA1000_STATUS_REG register
* Status register
*/
#define SJA1000_STATUS_REG (0x02)
/* SJA1000_MISS_ST : RO; bitpos: [8]; default: 0;
* This bit reflects whether the data packet in the RX FIFO is complete. 1:
* The current packet is missing; 0: The current packet is complete
*/
#define SJA1000_MISS_ST (BIT(8))
#define SJA1000_MISS_ST_M (SJA1000_MISS_ST_V << SJA1000_MISS_ST_S)
#define SJA1000_MISS_ST_V 0x00000001
#define SJA1000_MISS_ST_S 8
/* SJA1000_BUS_OFF_ST : RO; bitpos: [7]; default: 0;
* 1: In bus-off status, the SJA1000 Controller is no longer involved in bus
* activities.
*/
#define SJA1000_BUS_OFF_ST (BIT(7))
#define SJA1000_BUS_OFF_ST_M (SJA1000_BUS_OFF_ST_V << SJA1000_BUS_OFF_ST_S)
#define SJA1000_BUS_OFF_ST_V 0x00000001
#define SJA1000_BUS_OFF_ST_S 7
/* SJA1000_ERR_ST : RO; bitpos: [6]; default: 0;
* 1: At least one of the RX/TX error counter has reached or exceeded the
* value set in register SJA1000_ERR_WARNING_LIMIT_REG.
*/
#define SJA1000_ERR_ST (BIT(6))
#define SJA1000_ERR_ST_M (SJA1000_ERR_ST_V << SJA1000_ERR_ST_S)
#define SJA1000_ERR_ST_V 0x00000001
#define SJA1000_ERR_ST_S 6
/* SJA1000_TX_ST : RO; bitpos: [5]; default: 0;
* 1: The SJA1000 Controller is transmitting a message to the bus.
*/
#define SJA1000_TX_ST (BIT(5))
#define SJA1000_TX_ST_M (SJA1000_TX_ST_V << SJA1000_TX_ST_S)
#define SJA1000_TX_ST_V 0x00000001
#define SJA1000_TX_ST_S 5
/* SJA1000_RX_ST : RO; bitpos: [4]; default: 0;
* 1: The SJA1000 Controller is receiving a message from the bus.
*/
#define SJA1000_RX_ST (BIT(4))
#define SJA1000_RX_ST_M (SJA1000_RX_ST_V << SJA1000_RX_ST_S)
#define SJA1000_RX_ST_V 0x00000001
#define SJA1000_RX_ST_S 4
/* SJA1000_TX_COMPLETE : RO; bitpos: [3]; default: 0;
* 1: The SJA1000 controller has successfully received a packet from the
* bus.
*/
#define SJA1000_TX_COMPLETE (BIT(3))
#define SJA1000_TX_COMPLETE_M \
(SJA1000_TX_COMPLETE_V << SJA1000_TX_COMPLETE_S)
#define SJA1000_TX_COMPLETE_V 0x00000001
#define SJA1000_TX_COMPLETE_S 3
/* SJA1000_TX_BUF_ST : RO; bitpos: [2]; default: 0;
* 1: The TX buffer is empty, the CPU may write a message into it.
*/
#define SJA1000_TX_BUF_ST (BIT(2))
#define SJA1000_TX_BUF_ST_M (SJA1000_TX_BUF_ST_V << SJA1000_TX_BUF_ST_S)
#define SJA1000_TX_BUF_ST_V 0x00000001
#define SJA1000_TX_BUF_ST_S 2
/* SJA1000_OVERRUN_ST : RO; bitpos: [1]; default: 0;
* 1: The RX FIFO is full and data overrun has occurred.
*/
#define SJA1000_OVERRUN_ST (BIT(1))
#define SJA1000_OVERRUN_ST_M (SJA1000_OVERRUN_ST_V << SJA1000_OVERRUN_ST_S)
#define SJA1000_OVERRUN_ST_V 0x00000001
#define SJA1000_OVERRUN_ST_S 1
/* SJA1000_RX_BUF_ST : RO; bitpos: [0]; default: 0;
* 1: The data in the RX buffer is not empty, with at least one received
* data packet.
*/
#define SJA1000_RX_BUF_ST (BIT(0))
#define SJA1000_RX_BUF_ST_M (SJA1000_RX_BUF_ST_V << SJA1000_RX_BUF_ST_S)
#define SJA1000_RX_BUF_ST_V 0x00000001
#define SJA1000_RX_BUF_ST_S 0
/* SJA1000_INT_RAW_REG register
* Interrupt Register
*/
#define SJA1000_INT_RAW_REG (0x03)
/* SJA1000_BUS_ERR_INT_ST : RO; bitpos: [7]; default: 0;
* Error interrupt. If this bit is set to 1, it indicates an error is
* detected on the bus.
*/
#define SJA1000_BUS_ERR_INT_ST (BIT(7))
#define SJA1000_BUS_ERR_INT_ST_M \
(SJA1000_BUS_ERR_INT_ST_V << SJA1000_BUS_ERR_INT_ST_S)
#define SJA1000_BUS_ERR_INT_ST_V 0x00000001
#define SJA1000_BUS_ERR_INT_ST_S 7
/* SJA1000_ARB_LOST_INT_ST : RO; bitpos: [6]; default: 0;
* Arbitration lost interrupt. If this bit is set to 1, it indicates an
* arbitration lost interrupt is generated.
*/
#define SJA1000_ARB_LOST_INT_ST (BIT(6))
#define SJA1000_ARB_LOST_INT_ST_M \
(SJA1000_ARB_LOST_INT_ST_V << SJA1000_ARB_LOST_INT_ST_S)
#define SJA1000_ARB_LOST_INT_ST_V 0x00000001
#define SJA1000_ARB_LOST_INT_ST_S 6
/* SJA1000_ERR_PASSIVE_INT_ST : RO; bitpos: [5]; default: 0;
* Error passive interrupt. If this bit is set to 1, it indicates the
* SJA1000 Controller is switched between error active status and error
* passive status due to the change of error counters.
*/
#define SJA1000_ERR_PASSIVE_INT_ST (BIT(5))
#define SJA1000_ERR_PASSIVE_INT_ST_M \
(SJA1000_ERR_PASSIVE_INT_ST_V << SJA1000_ERR_PASSIVE_INT_ST_S)
#define SJA1000_ERR_PASSIVE_INT_ST_V 0x00000001
#define SJA1000_ERR_PASSIVE_INT_ST_S 5
/* SJA1000_OVERRUN_INT_ST : RO; bitpos: [3]; default: 0;
* Data overrun interrupt. If this bit is set to 1, it indicates a data
* overrun interrupt is generated in the RX FIFO.
*/
#define SJA1000_OVERRUN_INT_ST (BIT(3))
#define SJA1000_OVERRUN_INT_ST_M \
(SJA1000_OVERRUN_INT_ST_V << SJA1000_OVERRUN_INT_ST_S)
#define SJA1000_OVERRUN_INT_ST_V 0x00000001
#define SJA1000_OVERRUN_INT_ST_S 3
/* SJA1000_ERR_WARN_INT_ST : RO; bitpos: [2]; default: 0;
* Error warning interrupt. If this bit is set to 1, it indicates the error
* status signal and the bus-off status signal of Status register have
* changed (e.g., switched from 0 to 1 or from 1 to 0).
*/
#define SJA1000_ERR_WARN_INT_ST (BIT(2))
#define SJA1000_ERR_WARN_INT_ST_M \
(SJA1000_ERR_WARN_INT_ST_V << SJA1000_ERR_WARN_INT_ST_S)
#define SJA1000_ERR_WARN_INT_ST_V 0x00000001
#define SJA1000_ERR_WARN_INT_ST_S 2
/* SJA1000_TX_INT_ST : RO; bitpos: [1]; default: 0;
* Transmit interrupt. If this bit is set to 1, it indicates the message
* transmitting mis- sion is finished and a new transmission is able to
* execute.
*/
#define SJA1000_TX_INT_ST (BIT(1))
#define SJA1000_TX_INT_ST_M (SJA1000_TX_INT_ST_V << SJA1000_TX_INT_ST_S)
#define SJA1000_TX_INT_ST_V 0x00000001
#define SJA1000_TX_INT_ST_S 1
/* SJA1000_RX_INT_ST : RO; bitpos: [0]; default: 0;
* Receive interrupt. If this bit is set to 1, it indicates there are
* messages to be handled in the RX FIFO.
*/
#define SJA1000_RX_INT_ST (BIT(0))
#define SJA1000_RX_INT_ST_M (SJA1000_RX_INT_ST_V << SJA1000_RX_INT_ST_S)
#define SJA1000_RX_INT_ST_V 0x00000001
#define SJA1000_RX_INT_ST_S 0
/* SJA1000_INT_ENA_REG register
* Interrupt Enable Register
*/
#define SJA1000_INT_ENA_REG (0x04)
/* SJA1000_BUS_ERR_INT_ENA : R/W; bitpos: [7]; default: 0;
* Set this bit to 1 to enable error interrupt.
*/
#define SJA1000_BUS_ERR_INT_ENA (BIT(7))
#define SJA1000_BUS_ERR_INT_ENA_M \
(SJA1000_BUS_ERR_INT_ENA_V << SJA1000_BUS_ERR_INT_ENA_S)
#define SJA1000_BUS_ERR_INT_ENA_V 0x00000001
#define SJA1000_BUS_ERR_INT_ENA_S 7
/* SJA1000_ARB_LOST_INT_ENA : R/W; bitpos: [6]; default: 0;
* Set this bit to 1 to enable arbitration lost interrupt.
*/
#define SJA1000_ARB_LOST_INT_ENA (BIT(6))
#define SJA1000_ARB_LOST_INT_ENA_M \
(SJA1000_ARB_LOST_INT_ENA_V << SJA1000_ARB_LOST_INT_ENA_S)
#define SJA1000_ARB_LOST_INT_ENA_V 0x00000001
#define SJA1000_ARB_LOST_INT_ENA_S 6
/* SJA1000_ERR_PASSIVE_INT_ENA : R/W; bitpos: [5]; default: 0;
* Set this bit to 1 to enable error passive interrupt.
*/
#define SJA1000_ERR_PASSIVE_INT_ENA (BIT(5))
#define SJA1000_ERR_PASSIVE_INT_ENA_M \
(SJA1000_ERR_PASSIVE_INT_ENA_V << SJA1000_ERR_PASSIVE_INT_ENA_S)
#define SJA1000_ERR_PASSIVE_INT_ENA_V 0x00000001
#define SJA1000_ERR_PASSIVE_INT_ENA_S 5
/* SJA1000_OVERRUN_INT_ENA : R/W; bitpos: [3]; default: 0;
* Set this bit to 1 to enable data overrun interrupt.
*/
#define SJA1000_OVERRUN_INT_ENA (BIT(3))
#define SJA1000_OVERRUN_INT_ENA_M \
(SJA1000_OVERRUN_INT_ENA_V << SJA1000_OVERRUN_INT_ENA_S)
#define SJA1000_OVERRUN_INT_ENA_V 0x00000001
#define SJA1000_OVERRUN_INT_ENA_S 3
/* SJA1000_ERR_WARN_INT_ENA : R/W; bitpos: [2]; default: 0;
* Set this bit to 1 to enable error warning interrupt.
*/
#define SJA1000_ERR_WARN_INT_ENA (BIT(2))
#define SJA1000_ERR_WARN_INT_ENA_M \
(SJA1000_ERR_WARN_INT_ENA_V << SJA1000_ERR_WARN_INT_ENA_S)
#define SJA1000_ERR_WARN_INT_ENA_V 0x00000001
#define SJA1000_ERR_WARN_INT_ENA_S 2
/* SJA1000_TX_INT_ENA : R/W; bitpos: [1]; default: 0;
* Set this bit to 1 to enable transmit interrupt.
*/
#define SJA1000_TX_INT_ENA (BIT(1))
#define SJA1000_TX_INT_ENA_M (SJA1000_TX_INT_ENA_V << SJA1000_TX_INT_ENA_S)
#define SJA1000_TX_INT_ENA_V 0x00000001
#define SJA1000_TX_INT_ENA_S 1
/* SJA1000_RX_INT_ENA : R/W; bitpos: [0]; default: 0;
* Set this bit to 1 to enable receive interrupt.
*/
#define SJA1000_RX_INT_ENA (BIT(0))
#define SJA1000_RX_INT_ENA_M (SJA1000_RX_INT_ENA_V << SJA1000_RX_INT_ENA_S)
#define SJA1000_RX_INT_ENA_V 0x00000001
#define SJA1000_RX_INT_ENA_S 0
/* SJA1000_BUS_TIMING_0_REG register
* Bus Timing Register 0
*/
#define SJA1000_BUS_TIMING_0_REG (0x06)
/* SJA1000_SYNC_JUMP_WIDTH : RO | R/W; bitpos: [7:6]; default: 0;
* Synchronization Jump Width (SJW), 1 \verb+~+ 14 Tq wide.
*/
#define SJA1000_SYNC_JUMP_WIDTH 0x00000003
#define SJA1000_SYNC_JUMP_WIDTH_M \
(SJA1000_SYNC_JUMP_WIDTH_V << SJA1000_SYNC_JUMP_WIDTH_S)
#define SJA1000_SYNC_JUMP_WIDTH_V 0x00000003
#define SJA1000_SYNC_JUMP_WIDTH_S 6
/* SJA1000_BAUD_PRESC : RO | R/W; bitpos: [5:0]; default: 0;
* Baud Rate Prescaler, determines the frequency dividing ratio.
*/
#define SJA1000_BAUD_PRESC 0x0000003F
#define SJA1000_BAUD_PRESC_M (SJA1000_BAUD_PRESC_V << SJA1000_BAUD_PRESC_S)
#define SJA1000_BAUD_PRESC_V 0x0000003F
#define SJA1000_BAUD_PRESC_S 0
/* SJA1000_BUS_TIMING_1_REG register
* Bus Timing Register 1
*/
#define SJA1000_BUS_TIMING_1_REG (0x07)
/* SJA1000_TIME_SAMP : RO | R/W; bitpos: [7]; default: 0;
* The number of sample points. 0: the bus is sampled once; 1: the bus is
* sampled three times
*/
#define SJA1000_TIME_SAMP (BIT(7))
#define SJA1000_TIME_SAMP_M (SJA1000_TIME_SAMP_V << SJA1000_TIME_SAMP_S)
#define SJA1000_TIME_SAMP_V 0x00000001
#define SJA1000_TIME_SAMP_S 7
/* SJA1000_TIME_SEG2 : RO | R/W; bitpos: [6:4]; default: 0;
* The width of PBS2.
*/
#define SJA1000_TIME_SEG2 0x00000007
#define SJA1000_TIME_SEG2_M (SJA1000_TIME_SEG2_V << SJA1000_TIME_SEG2_S)
#define SJA1000_TIME_SEG2_V 0x00000007
#define SJA1000_TIME_SEG2_S 4
/* SJA1000_TIME_SEG1 : RO | R/W; bitpos: [3:0]; default: 0;
* The width of PBS1.
*/
#define SJA1000_TIME_SEG1 0x0000000F
#define SJA1000_TIME_SEG1_M (SJA1000_TIME_SEG1_V << SJA1000_TIME_SEG1_S)
#define SJA1000_TIME_SEG1_V 0x0000000F
#define SJA1000_TIME_SEG1_S 0
/* SJA1000_ARB_LOST_CAP_REG register
* Arbitration Lost Capture Register
*/
#define SJA1000_ARB_LOST_CAP_REG (0x0B)
/* SJA1000_ARB_LOST_CAP : RO; bitpos: [4:0]; default: 0;
* This register contains information about the bit position of lost
* arbitration.
*/
#define SJA1000_ARB_LOST_CAP 0x0000001F
#define SJA1000_ARB_LOST_CAP_M \
(SJA1000_ARB_LOST_CAP_V << SJA1000_ARB_LOST_CAP_S)
#define SJA1000_ARB_LOST_CAP_V 0x0000001F
#define SJA1000_ARB_LOST_CAP_S 0
/* SJA1000_ERR_CODE_CAP_REG register
* Error Code Capture Register
*/
#define SJA1000_ERR_CODE_CAP_REG (0x0C)
/* SJA1000_ECC_TYPE : RO; bitpos: [7:6]; default: 0;
* This register contains information about error types: 00: bit error; 01:
* form error; 10: stuff error; 11: other type of error
*/
#define SJA1000_ECC_TYPE 0x00000003
#define SJA1000_ECC_TYPE_M (SJA1000_ECC_TYPE_V << SJA1000_ECC_TYPE_S)
#define SJA1000_ECC_TYPE_V 0x00000003
#define SJA1000_ECC_TYPE_S 6
/* SJA1000_ECC_DIRECTION : RO; bitpos: [5]; default: 0;
* This register contains information about transmission direction of the
* node when error occurs. 1: Error occurs when receiving a message; 0:
* Error occurs when transmitting a message
*/
#define SJA1000_ECC_DIRECTION (BIT(5))
#define SJA1000_ECC_DIRECTION_M \
(SJA1000_ECC_DIRECTION_V << SJA1000_ECC_DIRECTION_S)
#define SJA1000_ECC_DIRECTION_V 0x00000001
#define SJA1000_ECC_DIRECTION_S 5
/* SJA1000_ECC_SEGMENT : RO; bitpos: [4:0]; default: 0;
* This register contains information about the location of errors, see
* Table 181 for details.
*/
#define SJA1000_ECC_SEGMENT 0x0000001F
#define SJA1000_ECC_SEGMENT_M \
(SJA1000_ECC_SEGMENT_V << SJA1000_ECC_SEGMENT_S)
#define SJA1000_ECC_SEGMENT_V 0x0000001F
#define SJA1000_ECC_SEGMENT_S 0
/* SJA1000_ERR_WARNING_LIMIT_REG register
* Error Warning Limit Register
*/
#define SJA1000_ERR_WARNING_LIMIT_REG (0x0D)
/* SJA1000_ERR_WARNING_LIMIT : RO | R/W; bitpos: [7:0]; default: 96;
* Error warning threshold. In the case when any of a error counter value
* exceeds the threshold, or all the error counter values are below the
* threshold, an error warning interrupt will be triggered (given the enable
* signal is valid).
*/
#define SJA1000_ERR_WARNING_LIMIT 0x000000FF
#define SJA1000_ERR_WARNING_LIMIT_M \
(SJA1000_ERR_WARNING_LIMIT_V << SJA1000_ERR_WARNING_LIMIT_S)
#define SJA1000_ERR_WARNING_LIMIT_V 0x000000FF
#define SJA1000_ERR_WARNING_LIMIT_S 0
/* SJA1000_RX_ERR_CNT_REG register
* Receive Error Counter Register
*/
#define SJA1000_RX_ERR_CNT_REG (0x0E)
/* SJA1000_RX_ERR_CNT : RO | R/W; bitpos: [7:0]; default: 0;
* The RX error counter register, reflects value changes under reception
* status.
*/
#define SJA1000_RX_ERR_CNT 0x000000FF
#define SJA1000_RX_ERR_CNT_M (SJA1000_RX_ERR_CNT_V << SJA1000_RX_ERR_CNT_S)
#define SJA1000_RX_ERR_CNT_V 0x000000FF
#define SJA1000_RX_ERR_CNT_S 0
/* SJA1000_TX_ERR_CNT_REG register
* Transmit Error Counter Register
*/
#define SJA1000_TX_ERR_CNT_REG (0x0F)
/* SJA1000_TX_ERR_CNT : RO | R/W; bitpos: [7:0]; default: 0;
* The TX error counter register, reflects value changes under transmission
* status.
*/
#define SJA1000_TX_ERR_CNT 0x000000FF
#define SJA1000_TX_ERR_CNT_M (SJA1000_TX_ERR_CNT_V << SJA1000_TX_ERR_CNT_S)
#define SJA1000_TX_ERR_CNT_V 0x000000FF
#define SJA1000_TX_ERR_CNT_S 0
/* SJA1000_DATA_0_REG register
* Data register 0
*/
#define SJA1000_DATA_0_REG (0x10)
/* SJA1000_TX_BYTE_0 : WO; bitpos: [7:0]; default: 0;
* Stored the 0th byte information of the data to be transmitted under
* operating mode.
*/
#define SJA1000_TX_BYTE_0 0x000000FF
#define SJA1000_TX_BYTE_0_M (SJA1000_TX_BYTE_0_V << SJA1000_TX_BYTE_0_S)
#define SJA1000_TX_BYTE_0_V 0x000000FF
#define SJA1000_TX_BYTE_0_S 0
/* SJA1000_ACCEPTANCE_CODE_0 : WO; bitpos: [7:0]; default: 0;
* Stored the 0th byte of the filter code in reset mode.
*/
#define SJA1000_ACCEPTANCE_CODE_0 0x000000FF
#define SJA1000_ACCEPTANCE_CODE_0_M \
(SJA1000_ACCEPTANCE_CODE_0_V << SJA1000_ACCEPTANCE_CODE_0_S)
#define SJA1000_ACCEPTANCE_CODE_0_V 0x000000FF
#define SJA1000_ACCEPTANCE_CODE_0_S 0
/* SJA1000_DATA_1_REG register
* Data register 1
*/
#define SJA1000_DATA_1_REG (0x11)
/* SJA1000_TX_BYTE_1 : WO; bitpos: [7:0]; default: 0;
* Stored the 1st byte information of the data to be transmitted under
* operating mode.
*/
#define SJA1000_TX_BYTE_1 0x000000FF
#define SJA1000_TX_BYTE_1_M (SJA1000_TX_BYTE_1_V << SJA1000_TX_BYTE_1_S)
#define SJA1000_TX_BYTE_1_V 0x000000FF
#define SJA1000_TX_BYTE_1_S 0
/* SJA1000_ACCEPTANCE_CODE_1 : WO; bitpos: [7:0]; default: 0;
* Stored the 1st byte of the filter code in reset mode.
*/
#define SJA1000_ACCEPTANCE_CODE_1 0x000000FF
#define SJA1000_ACCEPTANCE_CODE_1_M \
(SJA1000_ACCEPTANCE_CODE_1_V << SJA1000_ACCEPTANCE_CODE_1_S)
#define SJA1000_ACCEPTANCE_CODE_1_V 0x000000FF
#define SJA1000_ACCEPTANCE_CODE_1_S 0
/* SJA1000_DATA_2_REG register
* Data register 2
*/
#define SJA1000_DATA_2_REG (0x12)
/* SJA1000_TX_BYTE_2 : WO; bitpos: [7:0]; default: 0;
* Stored the 2nd byte information of the data to be transmitted under
* operating mode.
*/
#define SJA1000_TX_BYTE_2 0x000000FF
#define SJA1000_TX_BYTE_2_M (SJA1000_TX_BYTE_2_V << SJA1000_TX_BYTE_2_S)
#define SJA1000_TX_BYTE_2_V 0x000000FF
#define SJA1000_TX_BYTE_2_S 0
/* SJA1000_ACCEPTANCE_CODE_2 : WO; bitpos: [7:0]; default: 0;
* Stored the 2nd byte of the filter code in reset mode.
*/
#define SJA1000_ACCEPTANCE_CODE_2 0x000000FF
#define SJA1000_ACCEPTANCE_CODE_2_M \
(SJA1000_ACCEPTANCE_CODE_2_V << SJA1000_ACCEPTANCE_CODE_2_S)
#define SJA1000_ACCEPTANCE_CODE_2_V 0x000000FF
#define SJA1000_ACCEPTANCE_CODE_2_S 0
/* SJA1000_DATA_3_REG register
* Data register 3
*/
#define SJA1000_DATA_3_REG (0x13)
/* SJA1000_TX_BYTE_3 : WO; bitpos: [7:0]; default: 0;
* Stored the 3rd byte information of the data to be transmitted under
* operating mode.
*/
#define SJA1000_TX_BYTE_3 0x000000FF
#define SJA1000_TX_BYTE_3_M (SJA1000_TX_BYTE_3_V << SJA1000_TX_BYTE_3_S)
#define SJA1000_TX_BYTE_3_V 0x000000FF
#define SJA1000_TX_BYTE_3_S 0
/* SJA1000_ACCEPTANCE_CODE_3 : WO; bitpos: [7:0]; default: 0;
* Stored the 3rd byte of the filter code in reset mode.
*/
#define SJA1000_ACCEPTANCE_CODE_3 0x000000FF
#define SJA1000_ACCEPTANCE_CODE_3_M \
(SJA1000_ACCEPTANCE_CODE_3_V << SJA1000_ACCEPTANCE_CODE_3_S)
#define SJA1000_ACCEPTANCE_CODE_3_V 0x000000FF
#define SJA1000_ACCEPTANCE_CODE_3_S 0
/* SJA1000_DATA_4_REG register
* Data register 4
*/
#define SJA1000_DATA_4_REG (0x14)
/* SJA1000_TX_BYTE_4 : WO; bitpos: [7:0]; default: 0;
* Stored the 4th byte information of the data to be transmitted under
* operating mode.
*/
#define SJA1000_TX_BYTE_4 0x000000FF
#define SJA1000_TX_BYTE_4_M (SJA1000_TX_BYTE_4_V << SJA1000_TX_BYTE_4_S)
#define SJA1000_TX_BYTE_4_V 0x000000FF
#define SJA1000_TX_BYTE_4_S 0
/* SJA1000_ACCEPTANCE_MASK_0 : WO; bitpos: [7:0]; default: 0;
* Stored the 0th byte of the filter code in reset mode.
*/
#define SJA1000_ACCEPTANCE_MASK_0 0x000000FF
#define SJA1000_ACCEPTANCE_MASK_0_M \
(SJA1000_ACCEPTANCE_MASK_0_V << SJA1000_ACCEPTANCE_MASK_0_S)
#define SJA1000_ACCEPTANCE_MASK_0_V 0x000000FF
#define SJA1000_ACCEPTANCE_MASK_0_S 0
/* SJA1000_DATA_5_REG register
* Data register 5
*/
#define SJA1000_DATA_5_REG (0x15)
/* SJA1000_TX_BYTE_5 : WO; bitpos: [7:0]; default: 0;
* Stored the 5th byte information of the data to be transmitted under
* operating mode.
*/
#define SJA1000_TX_BYTE_5 0x000000FF
#define SJA1000_TX_BYTE_5_M (SJA1000_TX_BYTE_5_V << SJA1000_TX_BYTE_5_S)
#define SJA1000_TX_BYTE_5_V 0x000000FF
#define SJA1000_TX_BYTE_5_S 0
/* SJA1000_ACCEPTANCE_MASK_1 : WO; bitpos: [7:0]; default: 0;
* Stored the 1st byte of the filter code in reset mode.
*/
#define SJA1000_ACCEPTANCE_MASK_1 0x000000FF
#define SJA1000_ACCEPTANCE_MASK_1_M \
(SJA1000_ACCEPTANCE_MASK_1_V << SJA1000_ACCEPTANCE_MASK_1_S)
#define SJA1000_ACCEPTANCE_MASK_1_V 0x000000FF
#define SJA1000_ACCEPTANCE_MASK_1_S 0
/* SJA1000_DATA_6_REG register
* Data register 6
*/
#define SJA1000_DATA_6_REG (0x16)
/* SJA1000_TX_BYTE_6 : WO; bitpos: [7:0]; default: 0;
* Stored the 6th byte information of the data to be transmitted under
* operating mode.
*/
#define SJA1000_TX_BYTE_6 0x000000FF
#define SJA1000_TX_BYTE_6_M (SJA1000_TX_BYTE_6_V << SJA1000_TX_BYTE_6_S)
#define SJA1000_TX_BYTE_6_V 0x000000FF
#define SJA1000_TX_BYTE_6_S 0
/* SJA1000_ACCEPTANCE_MASK_2 : WO; bitpos: [7:0]; default: 0;
* Stored the 2nd byte of the filter code in reset mode.
*/
#define SJA1000_ACCEPTANCE_MASK_2 0x000000FF
#define SJA1000_ACCEPTANCE_MASK_2_M \
(SJA1000_ACCEPTANCE_MASK_2_V << SJA1000_ACCEPTANCE_MASK_2_S)
#define SJA1000_ACCEPTANCE_MASK_2_V 0x000000FF
#define SJA1000_ACCEPTANCE_MASK_2_S 0
/* SJA1000_DATA_7_REG register
* Data register 7
*/
#define SJA1000_DATA_7_REG (0x17)
/* SJA1000_TX_BYTE_7 : WO; bitpos: [7:0]; default: 0;
* Stored the 7th byte information of the data to be transmitted under
* operating mode.
*/
#define SJA1000_TX_BYTE_7 0x000000FF
#define SJA1000_TX_BYTE_7_M (SJA1000_TX_BYTE_7_V << SJA1000_TX_BYTE_7_S)
#define SJA1000_TX_BYTE_7_V 0x000000FF
#define SJA1000_TX_BYTE_7_S 0
/* SJA1000_ACCEPTANCE_MASK_3 : WO; bitpos: [7:0]; default: 0;
* Stored the 3th byte of the filter code in reset mode.
*/
#define SJA1000_ACCEPTANCE_MASK_3 0x000000FF
#define SJA1000_ACCEPTANCE_MASK_3_M \
(SJA1000_ACCEPTANCE_MASK_3_V << SJA1000_ACCEPTANCE_MASK_3_S)
#define SJA1000_ACCEPTANCE_MASK_3_V 0x000000FF
#define SJA1000_ACCEPTANCE_MASK_3_S 0
/* SJA1000_DATA_8_REG register
* Data register 8
*/
#define SJA1000_DATA_8_REG (0x18)
/* SJA1000_TX_BYTE_8 : WO; bitpos: [7:0]; default: 0;
* Stored the 8th byte information of the data to be transmitted under
* operating mode.
*/
#define SJA1000_TX_BYTE_8 0x000000FF
#define SJA1000_TX_BYTE_8_M (SJA1000_TX_BYTE_8_V << SJA1000_TX_BYTE_8_S)
#define SJA1000_TX_BYTE_8_V 0x000000FF
#define SJA1000_TX_BYTE_8_S 0
/* SJA1000_DATA_9_REG register
* Data register 9
*/
#define SJA1000_DATA_9_REG (0x19)
/* SJA1000_TX_BYTE_9 : WO; bitpos: [7:0]; default: 0;
* Stored the 9th byte information of the data to be transmitted under
* operating mode.
*/
#define SJA1000_TX_BYTE_9 0x000000FF
#define SJA1000_TX_BYTE_9_M (SJA1000_TX_BYTE_9_V << SJA1000_TX_BYTE_9_S)
#define SJA1000_TX_BYTE_9_V 0x000000FF
#define SJA1000_TX_BYTE_9_S 0
/* SJA1000_DATA_10_REG register
* Data register 10
*/
#define SJA1000_DATA_10_REG (0x1A)
/* SJA1000_TX_BYTE_10 : WO; bitpos: [7:0]; default: 0;
* Stored the 10th byte information of the data to be transmitted under
* operating mode.
*/
#define SJA1000_TX_BYTE_10 0x000000FF
#define SJA1000_TX_BYTE_10_M (SJA1000_TX_BYTE_10_V << SJA1000_TX_BYTE_10_S)
#define SJA1000_TX_BYTE_10_V 0x000000FF
#define SJA1000_TX_BYTE_10_S 0
/* SJA1000_DATA_11_REG register
* Data register 11
*/
#define SJA1000_DATA_11_REG (0x1B)
/* SJA1000_TX_BYTE_11 : WO; bitpos: [7:0]; default: 0;
* Stored the 11th byte information of the data to be transmitted under
* operating mode.
*/
#define SJA1000_TX_BYTE_11 0x000000FF
#define SJA1000_TX_BYTE_11_M (SJA1000_TX_BYTE_11_V << SJA1000_TX_BYTE_11_S)
#define SJA1000_TX_BYTE_11_V 0x000000FF
#define SJA1000_TX_BYTE_11_S 0
/* SJA1000_DATA_12_REG register
* Data register 12
*/
#define SJA1000_DATA_12_REG (0x1C)
/* SJA1000_TX_BYTE_12 : WO; bitpos: [7:0]; default: 0;
* Stored the 12th byte information of the data to be transmitted under
* operating mode.
*/
#define SJA1000_TX_BYTE_12 0x000000FF
#define SJA1000_TX_BYTE_12_M (SJA1000_TX_BYTE_12_V << SJA1000_TX_BYTE_12_S)
#define SJA1000_TX_BYTE_12_V 0x000000FF
#define SJA1000_TX_BYTE_12_S 0
/* SJA1000_RX_MESSAGE_CNT_REG register
* Receive Message Counter Register
*/
#define SJA1000_RX_MESSAGE_CNT_REG (0x1D)
/* SJA1000_RX_MESSAGE_COUNTER : RO; bitpos: [6:0]; default: 0;
* This register reflects the number of messages available within the RX
* FIFO.
*/
#define SJA1000_RX_MESSAGE_COUNTER 0x0000007F
#define SJA1000_RX_MESSAGE_COUNTER_M \
(SJA1000_RX_MESSAGE_COUNTER_V << SJA1000_RX_MESSAGE_COUNTER_S)
#define SJA1000_RX_MESSAGE_COUNTER_V 0x0000007F
#define SJA1000_RX_MESSAGE_COUNTER_S 0
/* SJA1000_CLOCK_DIVIDER_REG register
* Clock Divider register
*/
#define SJA1000_CLOCK_DIVIDER_REG (0x1F)
/* SJA1000_CLOCK_OFF : RO | R/W; bitpos: [3]; default: 0;
* This bit can be configured under reset mode. 1: Disable the external
* CLKOUT pin; 0: Enable the external CLKOUT pin
*/
#define SJA1000_CLOCK_OFF (BIT(3))
#define SJA1000_CLOCK_OFF_M (SJA1000_CLOCK_OFF_V << SJA1000_CLOCK_OFF_S)
#define SJA1000_CLOCK_OFF_V 0x00000001
#define SJA1000_CLOCK_OFF_S 3
/* SJA1000_EXT_MODE : RO | R/W; bitpos: [7]; default: 0;
* This bit can be configured under reset mode. 1: Extended mode, compatible
* with CAN2.0B; 0: Basic mode
*/
#define SJA1000_EXT_MODE (BIT(7))
#define SJA1000_EXT_MODE_M (SJA1000_EXT_MODE_V << SJA1000_EXT_MODE_S)
#define SJA1000_EXT_MODE_V 0x00000001
#define SJA1000_EXT_MODE_S 7
/* SJA1000_CD : R/W; bitpos: [7:0]; default: 0;
* These bits are used to configure frequency dividing coefficients of the
* external CLKOUT pin.
*/
#define SJA1000_CD 0x00000007
#define SJA1000_CD_M (SJA1000_CD_V << SJA1000_CD_S)
#define SJA1000_CD_V 0x00000007
#define SJA1000_CD_S 0
#endif /* __DRIVERS_CAN_SJA1000_H */
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