[Ovmsdev] Build environment

[Mark Webb-Johnson]

The issue with building under windows is that the C compiler Microchip gives for free used to do medium-optimisation under windows, with high-optimisation a cost option. Then, they switched (silently, without any fanfare) to no-optimisation for the windows compiler. Both the Linux and OSX compiler continue with medium-optimisation. Without optimisation, the code won't fit into available flash space. They sell a commercial version of the C18 compiler for about US$500. Almost enough to drive one to ARM... I have heard rumours of people typing 'microchip c18 hack' into google.

Configurations 4 and 5 are the 'full' featured production builds for Tesla Roadster and Renault Twizy (provided as a convenience for owners of those vehicles who just want a binary .hex to flash).

Regards, Mark.

On 12 Jun, 2014, at 6:55 am, Olav A. Antonsen <olav at ansit.no> wrote:

> The document
> 
> https://github.com/openvehicles/Open-Vehicle-Monitoring-System/blob/master/d
> ocs/OVMS_Development.pdf
> 
> helps a lot when it comes to setting up the dev environment. I set up the
> environment on windows 8, but it seems like everyone else is using linux to
> build the firmware.
> 
> I was able to build the hex file (on win 8), but I haven't been able to test
> the file yet because I'm still waiting for my unit.
> 
> https://dl.dropboxusercontent.com/u/12327518/OVMS.X.production.hex
> 
> Is anyone else using win 8 to build the firmware?
> 
> 
> On the project in MPLAB it's possible to choose between different
> configurations
> 
> 1)V1_Production
> 2)V2_Experimental
> 3)V2_Production
> 4)V2_TR_Production
> 5)V2_RT_Production
> 
> The development documentation tells the user to select "V2_Experimental".
> What is the purpose of configuration 4 and 5? 
> 
> 
> --Olav
> 
> 
> -----Opprinnelig melding-----
> Fra: ovmsdev-bounces at lists.teslaclub.hk
> [mailto:ovmsdev-bounces at lists.teslaclub.hk] På vegne av Olav A. Antonsen
> Sendt: 11. juni 2014 00:21
> Til: 'OVMS Developers'
> Emne: [Ovmsdev] Build environment
> 
> Hello
> 
> Does anyone know if there exists a tutorial/quick guide on how to setup the
> environment needed to code and build the firmware?
> 
> --Olav
> 
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