The driver must contain the following functions:·
XXX_Init | INITIALIZE CAN CONTROLLER |
...
XXX_Open | LOCK A CAN CONTROLLER DEVICE |
...
XXX_Close | RELEASE A CAN CONTROLLER DEVICE |
...
XXX_IoCtl | CONTROL THE CAN CONTROLLER DEVICE |
...
XXX_Read | READ DATA FROM A CAN CONTROLLER DEVICE |
...
XXX_Write | WRITE DATA TO A CAN CONTROLLER DEVICE |
Where XXX is the exact chip identification.
Examples
...
A device driver for an external SJA1000 chip, the init function is labeled “SJA1000SJA1000_Init”Init
A device driver for the internal CAN controllers #0..#2 of the TriCore 1796, the init function is labeled “TC1796TC1796_Init”Init.
(Note: the three CAN controllers within the chip are addressed via the “device name”device name. Details are described later in this chapter).