Mikroelektronika MIKROE-742 데이터 시트

189

- SOFTWARE AND HARDWARE SOLUTIONS FOR EMBEDDED WORLD

CHAPTER 6

function CANSPIGetOperationMode(): byte;

Current operation mode.

The function returns current operation mode of the CANSPI module. Check

CANSPI_OP_MODE

constants (see CANSPI constants) or device datasheet for

operation mode codes.

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.

// check whether the CANSPI module is in Normal mode and if it

is do something.
if (CANSPIGetOperationMode() = CANSPI_MODE_NORMAL) then
begin

procedure CANSPIInitialize(SJW: byte; BRP: byte; PHSEG1: byte;
PHSEG2: byte; PROPSEG: byte; CAN_CONFIG_FLAGS: byte);

Nothing.

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)