Mikroelektronika MIKROE-350 Fiche De Données

179

- SOFTWARE AND HARDWARE SOLUTIONS FOR EMBEDDED WORLD

CHAPTER 6

sub procedure CANSPISetFilter(dim CAN_FILTER as byte, dim val as
longint, 

dim CAN_CONFIG_FLAGS as byte)

Nothing.

Configures message filter. The parameter 

value

is bit-adjusted to the appropri-

ate filter registers.

Parameters:

- 

CAN_FILTER

: CANSPI module filter number. Valid values: 

CANSPI_FILTER

constants (see CANSPI constants) 

- 

val

: filter register value 

- 

CAN_CONFIG_FLAGS

: selects type of message to filter. Valid values: 

CANSPI_CONFIG_ALL_VALID_MSG, 

CANSPI_CONFIG_MATCH_MSG_TYPE and CANSPI_CONFIG_STD_MSG, 

CANSPI_CONFIG_MATCH_MSG_TYPE and CANSPI_CONFIG_XTD_MSG. 

(see CANSPI constants) 

The CANSPI module must be in Config mode, otherwise the sub function will be
ignored. See CANSPISetOperationMode.

The CANSPI routines are supported only by MCUs with the SPI module.

MCU has to be properly connected to mikroElektronika's CANSPI Extra Board
or similar hardware. See connection example at the bottom of this page.

' set the appropriate filter value and message type
CANSPISetOperationMode(CANSPI_MODE_CONFIG,0xFF)
' set CONFIGURATION mode (CANSPI module must be in config mode
for filter settings)

' Set id of filter B1_F1 to 3: 
CANSPISetFilter(CANSPI_FILTER_B1_F1, 3, CANSPI_CONFIG_XTD_MSG)