devcan-flexcan

QNX Board Support Packages8.0BSP User's GuideNXP S32G399 RDB3NXPNXPARM

CAN driver for FlexCAN Controller

Syntax:

devcan-flexcan [options] ["can#"[,sysirq[,sysirq[,sysirq]]]]
can# is can0|1|2|3
sysirq is CAN system interrupt number, up to 3 IRQ numbers
                  [-a]
                  [-b string]
                  [-B presdiv, propseg, pseg1, pseg2, rjw]
                  [-c number]
                  [-d string]
                  [-D presdiv, propseg, pseg1, pseg2, rjw]
                  [-f]
                  [-h]
                  [-i midrx[, midtx]]
                  [-I]
                  [-k clksrc[, freq]]
                  [-l]
                  [-m number]
                  [-M]
                  [-n number]
                  [-o]
                  [-p port]
                  [-q number]
                  [-r number[, number[, number]]
                  [-R]
                  [-s]
                  [-S]
                  [-t]
                  [-u number]
                  [-v]
                  [-w]
                  [-x]
                  [-z]

Runs on:

QNX OS

Options:

These are the options available for this driver.

can#
The CAN number to use, which can be can0, can1, can2 or can3.
sysirg
The CAN system interrupt number, up to 3 IRQ numbers.
-a
Disable the AUTOBUS. By default, the AUTOBUS is enabled.
-b bitrate
Use a predefined bitrate. The valid values you can specify are 50K, 125K, 250K, 1M or 500K. The default is 50K.
-B presdiv, propseg, pseg1, pseg2, rjw
Manually define the bitrate rate as a hexadecimal value. For each value, these conditions apply:
  • presdiv, specifies the bitrate prescaler.
  • propseg specifies the propagation segment time.
  • pseg1 specifies the bitrate time segment 1 must be less than or equal to 0x7.
  • pseg2 specifies the bitrate time segment 2 must be less than or equal to 0x7 but can't be zero (0x0).
  • rjw specifies the sync jump rate must be less than or equal to 0x3.
-c
Set and enable TDC offset (available for CAN-FD drivers).
-d
Predefined data bitrate for CAN-FD (50K, 125K, 250K, 500K, 1M, 5M, default 50K).
-D presdiv, propseg, pseg1, pseg2, rjw
Manually define the bitrate rate for CAN-FD as a hexadecimal value. For each value, these conditions apply:
  • presdiv, specifies the bitrate prescaler.
  • propseg specifies the propagation segment time.
  • pseg1 specifies the bitrate time segment 1 must be less than or equal to 0x7.
  • pseg2 specifies the bitrate time segment 2 must be less than or equal to 0x7 but can't be zero (0x0).
  • rjw specifies the sync jump rate must be less than or equal to 0x3.
-f
CAN-FD mode.
Note:
"-f" option shouldn't be used on old FLEXCAN controller (eg. the one found on imx8qm/qxp SOC).
-h
Single message buffer[14MB], default dual buffer[28MB]
Note:
"-h" is mandatory if the FLEXCAN controller(eg. the one found on imx8qm/qxp SOC) doesn't support dual buffer.
-i midrx[, midtx]
The starting receive and transmit message ID. The starting default ID is 0x100C0000.
-I
Enable IO privity.
-k clksrc[, freq]
Set clock source (ref_clk|ext_clk) and frequency. The default is ref_clk, 80000000.
Note:
If supported by FLEXCAN IP.
-l
Listen only Mode.
-m timestamp
Set the initial local timestamp as a hexadecimal number. The initial timestamp is 0x00000008.
-M
Disable MECR.
Note:
"-M" is mandatory for certain FLEXCAN controllers (eg. the one found on the i.MX8M Plus SOC).
-n number
Number of each device mailbox message buffer (default 128 for CAN, 28 for CAN-FD).
-o
Enable CAN FD ISO.
-p port
Base address of Flexcan.
-q number
Client wait queue length for each mailbox.
-r number[, number[, number]]
IRQ number, up to 3 IRQ numbers.
-R
Enable raw mode, send and receive both standard and extended messages (doesn't require the -x option).
-s
Enable triple bitrate sample (default single sample).
-S
Message data endian swap
-t
Enable the self-test loopback mode. By default, the self-test loopback mode is disabled.
-u can_unit_num
CAN unit number. The default is 1.
-v
Increase driver verbosity.
-w
The lowest buffer is transmitted first.
-x
Enable extended 29-bit CAN message ID. The default is 11-bit MID.
-z
Enable the timer synchronization. By default, it's disabled.
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