freecores / can Goto Github PK

From what I've seen, the most common practice for acceptance filter masks is to use 0 for don't care, and 1 for match. It appears the match signals use the opposite, so I propose you invert all the acceptance_mask_i[j] signals when determining a match (lines 173 - 180 in can_acf.v for standard mode).

Hi,
When I was looking at the can protocal,I was found a passage:
"When transmitting data frames and remote control frames, the data between the SOF and CRC segments, if the same level continues for 5 bits, in the next bit (the 6th bit), a level inverse to the first 5 bits is inserted."
I also checked other information. I confirm the can bit stuff is not include the part of crc.

But in can_bsp.v,the can bit stuff is include the part of crc.

assign bit_de_stuff_set = go_rx_id1 & (~go_error_frame);
assign bit_de_stuff_reset = go_rx_ack | go_error_frame | go_overload_frame;

Where is the program?

While going through the test-bench came to see about one of the revisions, in which said about the cs_can_i pin from the top file is not used for running through the wishbone interface. Is it necessary to comment the initialisation and run the program. 2 errors were obtained. How to solve the issue.

Without making any changes in the testbench and top we obtain a result that continue foreever. With only transmitting data and dont receiving it.