• State
  • Locked Locked
  • Replies 2 replies
  • Subscribers 97 subscribers
  • Views 233 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

How to write driver for CAN

Sanket Barot
Prodigy 40 points
Other Parts Discussed in Thread: AM3352

Hi,

I am currently working on TI AM3352. Currently we already have Linux Application and Kernel for ARM9 (Atmel) and now we would like to Port it on AM3352.

So I need to develop some driver and one of that is for CAN. Now constraint for me is that I would not like to change the Application part and current Application has some Open, Close and IOCTL call for currently implemeted CAN dirver. If I go for SocketCAN then it direclty provide interface on User Space. So I need to develop the driver to give the Current same Interface to Application but HOW?? I mean to say I need to go for writing from scracth (Which should not be the case) or can I use something which is already available or any other option??

I have gone through ../kernel/Documentation/networking/can.txt but it only talks about Socket CAN. If I understood correctly then CANUtils gives direct interface to User Space. and CANUtils also reside in User Space (I might be wrong but I assume it as CANUtils make some socket call which should be used in User Space, I might be wrong so Pleae correct me ). So how can I start??

  • 0
    TI__Intellectual 2725 points

    More info About AM335x DCAN driver can be found here.  http://processors.wiki.ti.com/index.php/AM335X_DCAN_Driver_Guide

  • 0 in reply to Gururaja Hebbar
    Prodigy 40 points

    Hello Gururaja,

    I have gone through the User guide but what I found is that I tals about the SocketCAN and CANUtils only. And the D_CAN driver (d_can.c and d_can_platform.c) are used as network driver and does not meet the complete requirement what I am looking for.

    But surely this provide me some guide to implement my own Dirver. But is it the only way?? Do I need to start from the scrach (not actually as reference is available) and no other way??

    And My all other understanding are correct about CANUtils and Socket CAN??