Yes, that is what I was proposing. I understand your annoyance; not sure if the 
app is the best place myself but it seems to be a reasonable place for now.

Will

> On Mar 24, 2016, at 10:10 AM, Christopher Collins <[email protected]> wrote:
> 
> On Wed, Mar 23, 2016 at 05:08:37PM -0700, will sanfilippo wrote:
> [...]
> 
> To summarize my understanding of your proposal (please let me know if I
> got anything wrong!):
> 
> 1. Create several independent HCI packages in the net/nimble directory.
> 
>>      net/nimble/hci_spi
>>      net/nimble/hci_combined
>>      net/nimble/hci_uart
> 
> 2. Each HCI package exports the "ble_hci" API in its pkg.yml.
> 
>    # net/nimble/hci_spi/pkg.yml
>    pkg.apis: ble_hci
> 
> 3. Both net/nimble/host and net/nimble/controller require the "ble"hci"
> API in their pkg.yml files.
> 
>    # net/nimble/host/pkg.yml
>    pkg.req_apis: ble_hci
> 
> 4. The app specifies the hard dependency on a specific HCI package.
> 
>    # apps/myapp/pkg.yml
>    pkg.deps: @apache-mynewt-core/net/nimble/hci_spi
> 
> I like it.  There is one annoyance, though: it is too bad that the app
> has to depend on a specific HCI package.  Using bletiny as an example,
> it would be nice if this app could be HCI-transport-agnostic.  However,
> some piece of code has to initialize the specific HCI package being
> used, and it makes sense that this would happen in the app, so I am not
> sure this is an issue.  It might be worthwhile to think a bit about how
> we might solve this issue cleanly.  The only solutions I can think of
> add too much complexity to justify, in my opinion.
> 
> Thanks,
> Chris

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