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I am trying to get CAN up and running on the RTOS NuttX (NXP Kinetis KEA). I was wondering if anyone knew about or could tell me if NuttX has any kind of support for CAN as I was unable to find any could anyone from the community either corroborate that there is no support for CAN on NuttX or provide resources if there are?

PS: I am a completely green to embedded systems so any help is appreciated!.

RaaziR
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  • The answer to "Can NittX support CAN" is yes in any event (and for ano other OS for that matter). Specifically "Does Nuttx include support" is a different question and probably whet you intended to ask. – Clifford Apr 03 '17 at 16:04

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CAN driver support is listed here: http://nuttx.org/doku.php?id=nuttx#device_drivers. It is mentioned in detail in the porting guide

6.1.5 CAN Drivers

NuttX supports only a very low-level CAN driver. This driver supports only the data exchange and does not include any high-level CAN protocol. The NuttX CAN driver is split into two parts:

  1. An "upper half", generic driver that provides the common CAN interface to application level code, and

  2. A "lower half", platform-specific driver that implements the low-level timer controls to implement the CAN functionality. Files supporting CAN can be found in the following locations:

    • Interface Definition. The header file for the NuttX CAN driver resides at include/nuttx/drivers/can.h. This header file includes both the application level interface to the CAN driver as well as the interface between the "upper half" and "lower half" drivers. The CAN module uses a standard character driver framework.
    • "Upper Half" Driver. The generic, "upper half" CAN driver resides at drivers/can.c.
    • "Lower Half" Drivers. Platform-specific CAN drivers reside in arch//src/ directory for the specific processor and for the specific CAN peripheral devices.
Clifford
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