ChibiOS Free Embedded RTOS

Ok, thank you!

Does ChibiOS support CAN2 on STM32F105? I try to compile program, but get error "C:/ChibiOS/os/hal/platforms/STM32/can_lld.c:448:5: warning: implicit declaration of function 'rccEnableCAN2' [-Wimplicit-function-declaration]"
I see, that rccEnableCAN2 define only for STM32F4xx platform.

What is the exact physical configuration of the bus (number of nodes, location of termination resistors, etc)?

For the purposes of testing, could you disable silent mode and loopback mode if they are enabled?

I try to read flash memory from automotive ECU via CAN, just connect CAN transiver to ...

Giovanni thanks a lot! You were right, the problem was not connected with the CAN driver. The problem was connected with the fact that there was quite a long interval between the moment of enquiry from the external device and reading answer from it . During this interval the buffer FIFO was ...

Giovanni wrote:Can you use the filters to use both RX FIFOs? that would double the number of buffers.

Giovanni

I use only one RX FIFO. I don't know how to use second, all CAN packet have the same CAN ID.

When I use the speed 125000 the program works but not all the time. In my case CAN filters will not help as the external device transmits only those packets which are necessary to me and there is no need in filtration.
The peculiarity of the external device is the following: the device sends an ...

Giovanni wrote:Also the main() is a thread at normal priority, do you have other activity there? if so try moving the CAN thread to normal priority +1.

Giovanni

No activity in main(). Just start single thread and endless loop:

This seems to confirm that you are unable to consume incoming packets fast enough, do you have other threads at the same priority or higher priority of the CAN thread?

If not, could you try to reduce the rate of packets on the sender?

Giovanni

I use in application one thread only with normal ...

Try putting a listener on the error event source (error_event field of CANDriver), if there is an error on the driver side it is there that you get the problem encoded into the flags.

Giovanni

I have got error 0x19. As I understood it means CAN_OVERFLOW_ERROR | CAN_FRAMING_ERROR | CAN_LIMIT ...

Hi,

Hard to tell, the code looks correct. Does the driver report errors? could it be an HW problem or a problem in the sender? does it happen that canReceive() returns something different from RDY_OK?

Just a note, the function canReceive() is able to wait without having to use events.

Giovanni ...