# HG changeset patch # User Mychaela Falconia # Date 1650004121 0 # Node ID 5952e2dfdc26ef784385aff9295dadcf3ea8207c # Parent b10442b756b2a69a4a7ba7dd9b46779fdb6e68fa FC-handset-spec section 4.4: update for current situation diff -r b10442b756b2 -r 5952e2dfdc26 FC-handset-spec --- a/FC-handset-spec Fri Apr 15 06:03:18 2022 +0000 +++ b/FC-handset-spec Fri Apr 15 06:28:41 2022 +0000 @@ -1853,17 +1853,15 @@ color" UI configuration (as opposed to the existing bigcolor and smallbw), whereas the existing smallbw config is a freebie gift from TI. -* No musical ringtones, just one extremely basic ringing sound - implementing - musical ringtones for the buzzer would be C139-specific work which is not - needed for the main goal of FC Libre Dumbphone, which will use Melody E1 - ringing instead. - -* No support for actual headsets in the headset jack! The headset jack on all - Mot C1xx phones serves a dual function, it is both an analog headset interface - and a digital interface for computer connection (UART at 2.8V logic levels), - and in FreeCalypso we absolutely require the computer interface function of - this jack - it is essential for development and debugging. Therefore, the - "ordinary end user" function of the headset jack is lost. +* No dynamic mode switching support on the headset jack: this jack on all C1xx + phones serves a dual function, it is both an analog headset interface and a + digital interface for computer connection (UART at 2.8V logic levels), and I + currently have no plans to implement dynamic switching between these two + modes. There will be one firmware build configuration in which the jack + accepts Motorola headsets - serial cables won't work unless you shut down the + fw and operate on the phone with tools like fc-loadtool, fc-simint or our FC + FFS editor - and another fw build configuration in which the headset jack + accepts serial cables, but not actual headsets. In summary, FreeCalypso Lite on Motorola C139 will be an *extremely* basic and "bare bones" phone - but the hope is that it would still be useful to some.