Datasheet

CANSPIInitialize
175
MIKROELEKTRONIKA - SOFTWARE AND HARDWARE SOLUTIONS FOR EMBEDDED WORLD
Libraries
mikroBasic PRO for AVR
CHAPTER 6
Prototype
sub procedure CANSPIInitialize(dim SJW as byte, dim BRP as byte,
dim PHSEG1 as byte, dim PHSEG2 as byte, dim PROPSEG as byte, dim
CAN_CONFIG_FLAGS as byte)
Returns Nothing.
Description
Initializes the CANSPI module.
Stand-Alone CAN controller in the CANSPI module is set to:
- Disable CAN capture
- Continue CAN operation in Idle mode
- Do not abort pending transmissions
- Fcan clock: 4*Tcy (Fosc)
- Baud rate is set according to given parameters
- CAN mode: Normal
- Filter and mask registers IDs are set to zero
- Filter and mask message frame type is set according to
CAN_CONFIG_FLAGS value
SAM,SEG2PHTS,WAKFIL and DBEN bits are set according to CAN_CONFIG_FLAGS value.
Parameters:
-
SJW as defined in CAN controller's datasheet
- BRP as defined in CAN controller's datasheet
-
PHSEG1 as defined in CAN controller's datasheet
- PHSEG2 as defined in CAN controller's datasheet
- PROPSEG as defined in CAN controller's datasheet
-
CAN_CONFIG_FLAGS is formed from predefined constants (see CANSPI constants)
Requires
Global variables :
-
CanSpi_CS: Chip Select line
- CanSpi_Rst: Reset line
- CanSpi_CS_Bit_Direction: Direction of the Chip Select pin
-
CanSpi_Rst_Bit_Direction: Direction of the Reset pin
must be defined before using this function.
The CANSPI routines are supported only by MCUs with the SPI module.
The SPI module needs to be initialized. See the SPI1_Init and
SPI1_Init_Advanced routines.
MCU has to be properly connected to mikroElektronika's CANSPI Extra Board
or similar hardware. See connection example at the bottom of this page.