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AS3525v1/v2:

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Fix problems with volume of recorded material by converting 14-bit samples to
16-bit. Remove duplicate samples from recorded data and support proper
samplerate since ADC runs 1/2 the codec clock. Support monitoring mono on both
output channels by feeding data manually to I2SOUT under the right conditions.

DMA is no longer used for recording since frames must be processed as described
above but it does allow full-duplex audio.

Miscellaneous change includes a proper constant (HW_SAMPR_DEFAULT) to reset the
hardware samplerate when recording is closed. PP5024 and AS3525 have different
default recording rates (22kHz and 44kHz respectively) but both have half-speed
ADC.


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@31180 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Michael Sevakis 2011-12-08 19:20:00 +00:00
parent 2c7379757c
commit e42a3194de
17 changed files with 272 additions and 212 deletions
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9
firmware/export/config/sansafuzev2.h
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@ -12,7 +12,14 @@
/* define this if you have recording possibility */
#define HAVE_RECORDING
#define REC_SAMPR_CAPS SAMPR_CAP_ALL
#define REC_SAMPR_CAPS (SAMPR_CAP_48 | SAMPR_CAP_44 | SAMPR_CAP_32 | \
SAMPR_CAP_24 | SAMPR_CAP_22 | SAMPR_CAP_16 | \
SAMPR_CAP_12 | SAMPR_CAP_11 | SAMPR_CAP_8)
/* because the samplerates don't match at each point, we must be able to
* tell PCM which set of rates to use. not needed if recording rates are
* a simple subset of playback rates and are equal values. */
#define CONFIG_SAMPR_TYPES
/* Default recording levels */
#define DEFAULT_REC_MIC_GAIN 23