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view src/cs/layer1/gtt_include/ctm/m_sequence.h @ 636:57e67ca2e1cb

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pcmdata.c: default +CGMI to "FreeCalypso" and +CGMM to model The present change has no effect whatsoever on Falconia-made and Openmoko-made devices on which /pcm/CGMI and /pcm/CGMM files have been programmed in FFS with sensible ID strings by the respective factories, but what should AT+CGMI and AT+CGMM queries return when the device is a Huawei GTM900 or Tango modem that has been converted to FreeCalypso with a firmware change? Before the present change they would return compiled-in defaults of "<manufacturer>" and "<model>", respectively; with the present change the firmware will self-identify as "FreeCalypso GTM900-FC" or "FreeCalypso Tango" on the two respective targets. This firmware identification will become important if someone incorporates an FC-converted GTM900 or Tango modem into a ZeroPhone-style smartphone where some high-level software like ofono will be talking to the modem and will need to properly identify this modem as FreeCalypso, as opposed to some other AT command modem flavor with different quirks. In technical terms, the compiled-in default for the AT+CGMI query (which will always be overridden by the /pcm/CGMI file in FFS if one is present) is now "FreeCalypso" in all configs on all targets; the compiled-in default for the AT+CGMM query (likewise always overridden by /pcm/CGMM if present) is "GTM900-FC" if CONFIG_TARGET_GTM900 or "Tango" if CONFIG_TARGET_TANGO or the original default of "<model>" otherwise.
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 19 Jan 2020 20:14:58 +0000
parents 945cf7f506b2
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