MCP 2515 (CAN controller)

[torana]

dear friend,

i am using MCP2515. i am little confuse. In MCP2515 PDF
register name is

TXBnDLC and the address of same register is 35H,45H,55h, then which one is the address.

 

[embpic]

CAN controller you are using having three transmit buffer and each data link control for each transmit buffer as
transmit buffer 1 - 35h
transmit buffer 2 - 45h
transmit buffer 3 - 55h
likewise.

 

[bigdogguru]

i am using MCP2515. i am little confuse. In MCP2515 PDF
register name is

TXBnDLC and the address of same register is 35H,45H,55h, then which one is the address.

If you examine, a bit more carefully, the name of the register, TXBnDLC, you will notice the lower case n which indicates in this case the register name is simply a generic, while TXB0DLC, TXB1DLC and TXB2DLC are specific register names corresponding to addresses 35H,45H and 55h respectively.

Reference: MCP2515 Datasheet, Section:11.0 REGISTER MAP, Table: 11-1, Page: 63



Are you attempting to write a custom driver for MCP2515 and a non-PIC microcontroller? If so, what specific microcontroller?


BigDog

 

[torana]

thank you ...

actually i am using at89s8252(it is having SPI). writing code in assemblly language