Rockbox Development > Feature Ideas
line-level output for Sansa e200
saratoga:
--- Quote from: PickupBetty on August 12, 2010, 11:46:54 PM ---There are plenty of reasons why dock output should be line level, and I can't think of any why it shouldn't.
--- End quote ---
As I said before, probably just lack of interest on the part of people who actually have a line out device. If you want you can try this build:
http://duke.edu/~mgg6/rockbox/rockbox.7z
No idea if it works, I don't have any way to test it. Heres the code in case someone wants to play with it:
--- Code: ---Index: firmware/drivers/audio/as3514.c
===================================================================
--- firmware/drivers/audio/as3514.c (revision 27794)
+++ firmware/drivers/audio/as3514.c (working copy)
@@ -256,7 +256,7 @@
ascodec_suppressor_on(false);
#endif
-#if defined(SANSA_E200V2) || defined(SANSA_FUZE)
+#if defined(SANSA_E200) || defined(SANSA_E200V2) || defined(SANSA_FUZE)
/* Set line out volume to 0dB */
as3514_write_masked(AS3514_LINE_OUT_R, 0x1b, AS3514_VOL_MASK);
as3514_write_masked(AS3514_LINE_OUT_L, 0x1b, AS3514_VOL_MASK);
--- End code ---
yapper:
It doesn't seem to work on a v1 E200 and Griffin powerdock - the volume remains unaltered.
Edit: there is a seller on ebay offering powerdocks for $6.50 at the moment
saratoga:
--- Quote from: yapper on August 13, 2010, 01:17:34 AM ---It doesn't seem to work on a v1 E200 and Griffin powerdock - the volume remains unaltered.
Edit: there is a seller on ebay offering powerdocks for $6.50 at the moment
--- End quote ---
unaltered == muted?
yapper:
No, the volume remain unaltered from what it was set to before I connected the DAP to the dock (with Select). I initially had it at +6db and it stayed the same. Next time I set it low (-50-ish) and again it remained unaltered.
Both times the volume varied on the line out if I adjusted the volume.
mc2739:
The line out on the e200v1 appears to be connected directly to the headphone output. Adjusting the AS3514 line out level has no effect on the line out volume. The line out level can only be changed by adjusting the headphone volume.
Adjusting the headphone level automatically could be dangerous in the case where someone is listening through the headphones and connects their dock/charger for the purpose of charging the battery. The headphone level would be switched to 0db which could potentially cause hearing damage.
With my e200v1, I use a saved config file to switch the volume when I wish to use the line out. In my opinion, it is easier to load the config file than to manually adjust the volume.
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