I think you need a few more things turned on in your config file. To figure out what you need turned on I always use the menuconfig tool and diff the old and new .config files, then I take the changes and pit them in my prj.conf file

In this case I ran ‘ninja menuconfig’ in the build directory, turned on SPI, then CANBUS, then MCP25625, here is a diff between zephyr/.config.old and zephyr/.config:

> CONFIG_SPI=y

678a679,695

> # CONFIG_SPI_ASYNC is not set

> # CONFIG_SPI_SLAVE is not set

> CONFIG_SPI_INIT_PRIORITY=70

> # CONFIG_SPI_LOG_LEVEL_OFF is not set

> # CONFIG_SPI_LOG_LEVEL_ERR is not set

> # CONFIG_SPI_LOG_LEVEL_WRN is not set

> CONFIG_SPI_LOG_LEVEL_INF=y

> # CONFIG_SPI_LOG_LEVEL_DBG is not set

> CONFIG_SPI_LOG_LEVEL=3

> # CONFIG_SPI_0 is not set

> # CONFIG_SPI_1 is not set

> # CONFIG_SPI_2 is not set

> # CONFIG_SPI_3 is not set

> # CONFIG_SPI_4 is not set

> # CONFIG_SPI_5 is not set

> # CONFIG_SPI_6 is not set

> CONFIG_SPI_NRFX=y

749a767,768

> # CONFIG_SPI_NOR is not set

> # CONFIG_SPI_FLASH_W25QXXDV is not set

760c779,797

< # CONFIG_CAN is not set

---

> CONFIG_CAN=y

> # CONFIG_CAN_LOG_LEVEL_OFF is not set

> # CONFIG_CAN_LOG_LEVEL_ERR is not set

> # CONFIG_CAN_LOG_LEVEL_WRN is not set

> CONFIG_CAN_LOG_LEVEL_INF=y

> # CONFIG_CAN_LOG_LEVEL_DBG is not set

> CONFIG_CAN_LOG_LEVEL=3

> CONFIG_CAN_INIT_PRIORITY=80

> CONFIG_CAN_WORKQ_FRAMES_BUF_CNT=4

> CONFIG_CAN_0=y

> CONFIG_CAN_1=y

> CONFIG_CAN_MCP2515=y

> CONFIG_CAN_MCP2515_OSC_FREQ=8000000

> CONFIG_CAN_MCP2515_INT_THREAD_STACK_SIZE=512

> CONFIG_CAN_MCP2515_INT_THREAD_PRIO=2

> CONFIG_CAN_MCP2515_MAX_FILTER=5

> CONFIG_CAN_MCP2515_INIT_PRIORITY=80

> # CONFIG_CAN_LOOPBACK is not set

> # CONFIG_CAN_NET is not set

My guess is you are not finding the SPI bus because you haven’t configured it.

Lawrence King

Principal Developer

+1(416)627-7302