Mikroelektronika MIKROE-724 データシート

248

mikoBasic PRO for dsPIC30/33 and PIC24

MikroElektronika

mikroBasic PRO for dsPIC30/33 and PIC24 provides a library (driver) for working with the dsPIC30F CAN module.

The CAN is a very robust protocol that has error detection and signalization, self–checking and fault confinement. 

Faulty CAN data and remote frames are re-transmitted automatically, similar to the Ethernet.

Data transfer rates depend on distance. For example, 1 Mbit/s can be achieved at network lengths below 40m while 

250 Kbit/s can be achieved at network lengths below 250m. The greater distance the lower maximum bitrate that can 

be achieved. The lowest bitrate defined by the standard is 200Kbit/s. Cables used are shielded twisted pairs.

CAN supports two message formats:

 

- Standard format, with 11 identifier bits, and 

 

- Extended format, with 29 identifier bits 

  

 

Important:

 

 

- Consult the CAN standard about CAN bus termination resistance. 

 

- CAN library routines require you to specify the module you want to use. To use the desired CAN module,  

 

  simply change the letter 

x in the routine prototype for a number from 1 to 2. 

 

- Number of CAN modules per MCU differs from chip to chip. Please, read the appropriate datasheet before  

 

  utilizing this library. 

Library Routines

 

- CANxSetOperationMode 

 

- CANxGetOperationMode 

 

- CANxInitialize 

 

- CANxSetBaudRate 

 

- CANxSetMask 

 

- CANxSetFilter 

 

- CANxRead 

 

- CANxWrite