This driver supports the Philips SJA1000 CAN device. As a stand-alone
device, the SJA1000 may be connected to the target system by a variety
of mechanisms, including direct connection, PCI bus, ISA bus or
USB. This driver is structured to support any of these methods,
although not all are currently implemented.
Access Methods
At present only Peak PCAN-PCI boards are supported by this driver. As
a consequence only the PCI access method is currently implemented and
within that, only PCAN-PCI boards are recognised and initialized. New
access methods and boards will be added as they become available.
Filter
The device provides filtering support that is compatible with the
filter model defined by the CAN subsystem, and therefore hardware
filtering is employed.
Baud Rates
The following baud rates are supported: 1Mb/s, 500kb/s,
250kb/s, 125kb/s, 100kb/s, 50kb/s, 20kb/s, 10kb/s.
Configuration
This driver requires an additional package to configure it to the
particular microcontroller. For each channel X
supported the CDL script in this package must provide the following
configuration options:
cdl_component CYGPKG_DEVS_CAN_CHANNELX
This defines whether the
channel is included. For channels 2 and 3 the default value is
conditional on the SJA1000 variant.
cdl_option CYGPKG_DEVS_CAN_CHANNELX_NAME
This defines the name of the channel.
In addition to the above options, each channel should contain the
following implements or requires
commands, as appropriate:
implements CYGINT_DEVS_CAN_SJA1000_REQUIRED
This adds to the count of SJA1000 devices implemented by the driver.
implements CYGINT_DEVS_CAN_SJA1000_PCI
This adds to the count of SJA1000 PCI-based devices
implemented by the driver. If the SJA1000 is accessed through a PCI
device then this interface should be implemented.
