I didn't test all bit combinations for the values listed here, so the conclusion might be wrong. Of course, this is still very far from complete. Word4: signed word, adjusts startup sound loudness (negative for less loud) (0100 is noticeable amount)Ĭhange to any value -> crash (tested word, word) Word2: changing value causes either boot loop, no sound, or nothing. Word0: 0x0080 - clearing this bit inhibits aux input
Word2: bit 0002 is enable/disable, the rest seem irrelevant Word2: if zero, next values are filled with what looks like random numbers Word0: crash if zero, otherwise no effect Word1: change to 0011 -> no startup soundĪ060 if any of these set, boot loop with startup sound playingĠ01f : boosts volume, the more the value the more the boost Word4: if >1aac -> boot loop (halfway through startup sound) If followed by "->" means I tested that precise value. "0400" = bitmask in hexadecimal notation. "word0" = the index of word (16-bit value) of data in the key. "user0" = "User configuration data 0" aka PSKEY_USR0 I have not found anything that affects dsp. So, I have essentially scanned through just about all "User configuration data" keys of csr chip. Remeasured DSP responses to include Connect+ effect at 21:17.So, consider removing 33-ohm resistors if you apply this hack. This may cause distortion if source impedance is high. I also notice, input stage of this audio detector circuit presents serious nonlinear load to the audio source. It can be done, but requires desoldering the connector, and adding an additional connector to the board (or just permanently soldering a bunch of wires). As soon as BT audio stops, aux input works again.Ī nice hack! A better way would be to use jack to provide the signal whenever a cable is plugged in.
#Bluesuite no spi transport lpt Bluetooth
+ whenever Bluetooth plays, aux input is inhibited automatically. The speaker doesn't make pairing sounds, though. + I can still connect to BT, and pair new devices. It's just a matter of shorting out Q12 transistor's collector to emitter.Īfter doing this, I anticipated some problems with Bluetooth. Guess what, the detection of audio signal is done in analog! so we can easily hack it, so that it thinks audio is always coming in. The speaker has an annoying habit of blocking aux sound when the signal is very low, causing annoying dropouts when playing quiet passages, watching movies and talking over skype.
Note: New and old speaker grilles and passive radiators cannot be interchanged! Rubber gasket mounted between Speakers and housing.
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