example in library Actisesnse Listner not work with my arduino mega 2560

[nett1s]

Hi, i making device for my NMEA 2000 Lowrance, i made my own PCB with atmega644pa and mcp2515 on it. So, on my board i started example TemperatureMonitor from NMEA2000 Library, so it is sending data to CAN ( I have checked it with my oscilloscope ). On arduino mega 2560 i trying to receive messages also with MCP2515 board, and it seems nothing to work. On transducer on receive side i see impulses in the output, but MCP2515 is silent, no anything on interrupt, cs, miso, mosi pins. In Actysense Listner on PC which my arduino mega (as receiver) connected i see nothing. I have checked with original mcp_can from arduino library example with receiving and i have getting CAN messages and MCP2515 pins signals appears, under your examples nothing. So, i think here problem not in the hardware. Help please!

[ttlappalainen]

Definetely it is hw or some definition like pin definition problem. Library has been tested in so many systems that it is hard to find sw problem for basic operation.

• Check your wireing that CAN H/CAN L are connected right.
• Make sure you have proper termination resistors on the bus. When bus is unpowered, you should measure 60 ohm between CAN H/CAN L
• Make suore you have defined all pins and also interrupt pin properly for both devices.
• Check from document https://ttlappalainen.github.io/NMEA2000/page_h_w_set_up.html#secCommErr

[nett1s]

I have checked all, it seems something with MCP2515 initialization. If i starting usual mcp_can CAN_receive example, all starting work, i see signals on SPI (CS, MISO, MOSI, SCK, INT), but if i start your example, no interrupt generation first ( i disabled it by putting 0xff value in int pin define), so next problem now, there is no signal on MISO pin ( CS, SCK, MOSI start generating except this one). I tryed changing 8MHz crystal to 16Mhz, but no any positive effect, also i have a few MCP module, there is also no problem in them. Help please!