FreeCalypso > hg > fc-magnetite

annotate doc/FCDEV3B-751774 @ 702:9394305d4ff5 default tip

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
etm_audio.c: fix off-by-one error in auw of FIR coefficients This fix was already made in FC Tourmaline a while back, but it is also the kind of bugfix that deserves to be backported to Magnetite and Selenite as well.
author Mychaela Falconia <falcon@freecalypso.org>
date Mon, 31 Oct 2022 00:14:44 +0000
parents 9f19cc5e46e8
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
622
9f19cc5e46e8 FCDEV3B-751774 experiment documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1 We have one experimental FCDEV3B V2 board on which our regular Calypso chip
9f19cc5e46e8 FCDEV3B-751774 experiment documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2 ([P]D751992AGHH) has been replaced with D751774AGHH, an earlier F-number
9f19cc5e46e8 FCDEV3B-751774 experiment documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
3 featuring DSP ROM version 3416 rather than the final version 3606 which we
9f19cc5e46e8 FCDEV3B-751774 experiment documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
4 normally work with. Both chip versions are Calypso C035 variants (ARM7 running
9f19cc5e46e8 FCDEV3B-751774 experiment documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
5 at 52 MHz, DSP running at 104 MHz), and both include AMR support - but there
9f19cc5e46e8 FCDEV3B-751774 experiment documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
6 must have been some issue with DSP version 34 (and maybe version 35 used in
9f19cc5e46e8 FCDEV3B-751774 experiment documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
7 Calypso+) that compelled TI to produce the newer and final version 36 which we
9f19cc5e46e8 FCDEV3B-751774 experiment documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
8 are most familiar with.
9f19cc5e46e8 FCDEV3B-751774 experiment documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
9
9f19cc5e46e8 FCDEV3B-751774 experiment documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
10 Our Layer1 code is based on TI's TCS211-20070608 semi-src release (which we have
9f19cc5e46e8 FCDEV3B-751774 experiment documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
11 reconstructed back to full source), and it officially supports only DSP 36.
9f19cc5e46e8 FCDEV3B-751774 experiment documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
12 However, our FC Magnetite firmware can also be built for DSP 34 targets (see
9f19cc5e46e8 FCDEV3B-751774 experiment documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
13 the Calypso-version-override article), in which case we use a monolithic DSP
9f19cc5e46e8 FCDEV3B-751774 experiment documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
14 patch (no L1_DYN_DSP_DWNLD) extracted from the TSM30 source. The patch version
9f19cc5e46e8 FCDEV3B-751774 experiment documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
15 is 4130.
9f19cc5e46e8 FCDEV3B-751774 experiment documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
16
9f19cc5e46e8 FCDEV3B-751774 experiment documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
17 The configure.sh target name for this special modified board is fcdev3b-dsp34
9f19cc5e46e8 FCDEV3B-751774 experiment documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
18 instead of just fcdev3b, and the two firmware builds are not interchangeable:
9f19cc5e46e8 FCDEV3B-751774 experiment documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
19 the regular fcdev3b build goes into regular FCDEV3B boards, the special
9f19cc5e46e8 FCDEV3B-751774 experiment documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
20 fcdev3b-dsp34 build goes into the special FCDEV3B-751774 board. However, when
9f19cc5e46e8 FCDEV3B-751774 experiment documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
21 running its respective build this DSP 34 board appears to function just as well
9f19cc5e46e8 FCDEV3B-751774 experiment documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
22 as our regular DSP 36 targets: standalone RF tests work, DSP-based audio
9f19cc5e46e8 FCDEV3B-751774 experiment documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
23 services (beeps and Melody E1) work, connecting to a live GSM network worked,
9f19cc5e46e8 FCDEV3B-751774 experiment documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
24 a few test voice calls worked, all of them connected in AMR mode, voice passed
9f19cc5e46e8 FCDEV3B-751774 experiment documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
25 successfully in both directions.
9f19cc5e46e8 FCDEV3B-751774 experiment documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
26
9f19cc5e46e8 FCDEV3B-751774 experiment documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
27 Going forward, we shall continue using D751992AGHH chips with DSP ROM version
9f19cc5e46e8 FCDEV3B-751774 experiment documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
28 3606 as our regular platform, but it is nice to know that the earlier DSP 34
9f19cc5e46e8 FCDEV3B-751774 experiment documented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
29 apparently works too.