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fc-shell TCH DL handler: add support for CSD modes
TCH DL capture mechanism in FC Tourmaline firmware has been extended
to support CSD modes in addition to speech - add the necessary support
on the host tools side.
It needs to be noted that this mechanism in its present state does NOT
provide the debug utility value that was sought: as we learned only
after the code was implemented, TI's DSP has a misfeature in that the
buffer we are reading (a_dd_0[]) is zeroed out when the IDS block
is enabled, i.e., we are reading all zeros and not the real DL bits
we were after. But since the code has already been written, we are
keeping it - perhaps we can do some tests with IDS disabled.
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Tue, 26 Nov 2024 06:27:43 +0000 |
parents | e7502631a0f9 |
children |
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# This phone has 3 memory chip selects: # # nCS0: flash chip select 1 # nCS1: RAM chip select # nCS3: flash chip select 2 # # All 3 chip select lines go to the same physical IC, a RAM/flash MCP. # We set WS=4 for all 3 here, copying what OsmocomBB does. The access # time listed in the datasheet is 70 ns for both RAM and flash, and per # my math setting WS=3 *might* work, but it could be marginal, so let's # play it safe for now. w16 fffffb00 00A4 w16 fffffb02 00A4 w16 fffffb06 00A4 # We also need to switch the CS4/ADD22 pin from its default function # of CS4 to the needed ADD22. w16 fffef006 0008 # With this phone all Calypso serial access always goes through the # CP2102 usb2serial IC inside the phone itself, which is programmed # to support the high non-standard baud rates. So we can safely # switch to 812500 baud unconditionally. baud 812500