[Ovmsdev] Leaf Updates

Mark Webb-Johnson mark at webb-johnson.net
Mon Nov 27 08:50:15 HKT 2017


For your canbus::Write, the approach is reasonable and useful. But, you are missing the message type (standard or extended). You are using uint16_t for the id, so only support standard. Perhaps change the name to canbus::WriteStandard(…), and also have a canbus::WriteExtended(uint32_t id, …)?

Regarding the OvmsVehicleNissanLeaf Ticker functions, you don’t need to register the event for these. Tickers for 1, 10, 60, 300, 600 and 3600 are already implemented in the base class. You just need to make a void TickerXXX(uint32_t ticker) function in your code, and it will get called appropriately. Have a look at vehicle_demo.{h,cpp} for an example.

Regards, Mark

> On 26 Nov 2017, at 6:06 AM, Tom Parker <tom at carrott.org> wrote:
> On 20/11/17 02:49, Mark Webb-Johnson wrote:
>> In v3, I haven’t bother with listen-only. Looking at connections to api.openvehicles.com <http://api.openvehicles.com/>, all but 2 vehicles have feature 15=1 (and those are probably mistakes by the end-user).
> OK I won't worry about porting that code.
>>> In v2 I abstracted the hardware interactions necesary to write to the canbus into a function void vehicle_nissanleaf_send_can_message(short id, unsigned char length, unsigned char *data). In v3 we call canbus::Write(const CAN_frame_t* p_frame). Do we want to add a similar simpler "send to this buffer with this can id" method to the canbus object? The Leaf doesn't use any of the extended can features so a simple interface for the simple case seems to make sense. For the moment I've implemented it within the leaf codebase, see void OvmsVehicleNissanLeaf::SendCanMessage(uint16_t id, uint8_t length, uint8_t *data) in the pull request.
>> No harm in adding that, if you think it is useful. Please go ahead.
> I've updated https://github.com/openvehicles/Open-Vehicle-Monitoring-System-3/pull/9 <https://github.com/openvehicles/Open-Vehicle-Monitoring-System-3/pull/9>
> I used method overloading, which I've previously learnt isn't as straightforward as it is in Java. Please advise if this is an appropriate way to add two Write methods to the canbus object.
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