FreeCalypso > hg > freecalypso-reveng
view compal/audio/volume-ctrl @ 384:dec73b00871d
pirelli/audio-tones: call waiting tone captured
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Wed, 10 Nov 2021 02:15:27 +0000 |
parents | 82fb5a70c9fd |
children |
line wrap: on
line source
It appears that the only way to bring up audio volume control (as opposed to ringer volume) on a C139 phone running Mot official fw is to be in active call, implying the need for a valid SIM, a GSM network, working service with that SIM+network combination and a party one can test-call. When you do get into the necessary active call state, navigation left and right buttons bring up the audio volume control screen and move this volume up or down. However, instead of seeing just 5 possible volume levels as would be available if Iota ABB downlink volume controls were used in TI's simple way, we see 8 possible volume levels being offered by Motorola's fw, numbered from 0 through 7. Level 0 is not mute - downlink audio is still present in the earpiece speaker, albeit quiet. It appears that Compal did something similar to Foxconn/Pirelli, probably manipulating both volume and PGA gain settings in Iota VBDCTRL in order to offer more than 5 possible volume levels to the user. However, because Compal firmwares don't have ETM and their oabbr TM3 command is broken (returns garbage), we don't have a way to just read out the register settings for each volume level. Furthermore, because the audio volume setting is so difficult to get to (requiring not only a SIM, but also network registration and a call), doing a tfc139 break-in for each possible volume level would be too much work.