FreeCalypso > hg > fc-tourmaline
view src/cs/layer1/gtt_include/ctm/m_sequence.h @ 75:8697f358f505
backlight rework: Condat light driver accepts levels
The present change is another intermediate step on the path toward
new FreeCalypso backlight handling. At this intermediate step the
Condat light driver accepts 0-255 backlight levels driven by MFW,
and puts them out on PWL on Luna development boards. At the same
time on C139 it is now possible to turn on the display backlight
with or without the keypad bl - the lsb of the 0-255 backlight level
controls the keypad bl.
MFW presently drives only 0 and 255 backlight levels, thus there is
no visible behavioral change yet - but the plan for subsequent stages
of this backlight rework is to add a dimmed backlight state
(no keypad bl on C139) during active calls.
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Sat, 24 Oct 2020 20:44:04 +0000 |
parents | 4e78acac3d88 |
children |
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/* ******************************************************************************* * * COPYRIGHT (C) 2000 BY ERICSSON EUROLAB DEUTSCHLAND GmbH * 90411 NUERNBERG, GERMANY, Tel Int + 49 911 5217 100 * * The program(s) may be used and/or copied only with the * written permission from Ericsson or in accordance * with the terms and conditions stipulated in the agreement or * contract under which the program(s) have been supplied. * ******************************************************************************* * * File : m_sequence.h * Purpose : Calculation of m-sequences * (maximum-length sequecnes or pseudo noise) * ******************************************************************************* */ #ifndef m_sequence_h #define m_sequence_h "$Id: $" /* ******************************************************************************* * INCLUDE FILES ******************************************************************************* */ /* ******************************************************************************* * DECLARATION OF PROTOTYPES ******************************************************************************* */ /* -------------------------------------------------------------------- */ /* function m_sequence() */ /* ********************* */ /* Calculates one period of an m-sequence (binary pseudo noise). */ /* The sequence is stored in the vector sequence, which must have a */ /* of (2^r)-1, where r is an integer number between 2 and 10. */ /* Therefore, with this release of m_sequence, sequences of length */ /* 3, 7, 15, 31, 63, 127, 255, 511, or 1023 can be generated. */ /* The resulting sequence is bipolar, i.e. it has values -1 and +1. */ /* -------------------------------------------------------------------- */ void m_sequence(WORD16 *sequence, WORD16 length); #endif