FreeCalypso > hg > fc-tourmaline
view src/nucleus/smse.c @ 281:a75eefbf8be4
Phone boot with PWON: weed out short button presses
Every standard end user phone has a design provision, most naturally
implemented in firmware, whereby the PWON button effects a boot only
if it is held down long enough - short presses of this PWON button
are detected, assumed to be spurious and cause the fw to power back off
instead of proceeding with boot. The present change introduces this
standard function in FreeCalypso.
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Fri, 24 Sep 2021 02:03:08 +0000 |
parents | 4e78acac3d88 |
children |
line wrap: on
line source
/*************************************************************************/ /* */ /* Copyright Mentor Graphics Corporation 2002 */ /* All Rights Reserved. */ /* */ /* THIS WORK CONTAINS TRADE SECRET AND PROPRIETARY INFORMATION WHICH IS */ /* THE PROPERTY OF MENTOR GRAPHICS CORPORATION OR ITS LICENSORS AND IS */ /* SUBJECT TO LICENSE TERMS. */ /* */ /*************************************************************************/ /*************************************************************************/ /* */ /* FILE NAME VERSION */ /* */ /* smse.c Nucleus PLUS 1.14 */ /* */ /* COMPONENT */ /* */ /* SM - Semaphore Management */ /* */ /* DESCRIPTION */ /* */ /* This file contains the error checking routines for the */ /* supplemental functions of the Semaphore component. This permits */ /* easy removal of error checking logic when it is not needed. */ /* */ /* DATA STRUCTURES */ /* */ /* None */ /* */ /* FUNCTIONS */ /* */ /* SMSE_Reset_Semaphore Reset a semaphore */ /* */ /* DEPENDENCIES */ /* */ /* cs_extr.h Common Service functions */ /* tc_extr.h Thread Control functions */ /* sm_extr.h Semaphore functions */ /* */ /* HISTORY */ /* */ /* DATE REMARKS */ /* */ /* 03-01-1994 Created initial version 1.1 from */ /* routines originally in core */ /* error checking file */ /* */ /* 03-18-1994 Verified version 1.1 */ /* 04-17-1996 updated to version 1.2 */ /* 03-24-1998 Released version 1.3 */ /* 04-17-2002 Released version 1.13m */ /* 11-07-2002 Released version 1.14 */ /*************************************************************************/ #define NU_SOURCE_FILE #include "cs_extr.h" /* Common service functions */ #include "tc_extr.h" /* Thread control functions */ #include "sm_extr.h" /* Semaphore functions */ /*************************************************************************/ /* */ /* FUNCTION */ /* */ /* SMSE_Reset_Semaphore */ /* */ /* DESCRIPTION */ /* */ /* This function performs error checking on the parameters supplied */ /* to the reset semaphore function. */ /* */ /* CALLED BY */ /* */ /* Application */ /* */ /* CALLS */ /* */ /* SMS_Reset_Semaphore Actual reset semaphore func. */ /* */ /* INPUTS */ /* */ /* semaphore_ptr Semaphore control block ptr */ /* initial_count Initial count to reset the */ /* semaphore to */ /* */ /* OUTPUTS */ /* */ /* NU_INVALID_SEMAPHORE Invalid semaphore pointer */ /* */ /* HISTORY */ /* */ /* DATE REMARKS */ /* */ /* 03-01-1993 Created initial version 1.0 */ /* 04-19-1993 Verified version 1.0 */ /* 03-01-1994 Modified function interface, */ /* resulting in version 1.1 */ /* */ /* 03-18-1994 Verified version 1.1 */ /* */ /*************************************************************************/ STATUS SMSE_Reset_Semaphore(NU_SEMAPHORE *semaphore_ptr, UNSIGNED initial_count) { SM_SCB *semaphore; /* Semaphore control blk ptr */ STATUS status; /* Completion status */ /* Move input semaphore pointer into internal pointer. */ semaphore = (SM_SCB *) semaphore_ptr; /* Determine if the semaphore pointer is valid. */ if ((semaphore) && (semaphore -> sm_id == SM_SEMAPHORE_ID)) /* Semaphore pointer is valid, call function to reset it. */ status = SMS_Reset_Semaphore(semaphore_ptr, initial_count); else /* Semaphore pointer is invalid, indicate in completion status. */ status = NU_INVALID_SEMAPHORE; /* Return completion status. */ return(status); }