FreeCalypso > hg > fc-tourmaline
view src/nucleus/qud.c @ 72:7bf39f5e834d
backlight control on Luna: switch PWL instead of LEDB
This change is preliminary toward upcoming rework of backlight control
logic in our UI firmware. LEDB does not exist on Tango-based platforms
(it is not brought out on Tango modules), thus turning it on and off
produces absolutely no effect beyond making L1 disable deep sleep
when LEDB is turned on. However, both iWOW DSK and our upcoming
FC Caramel2 boards have a PWL LED, so let's switch that LED on and off
to indicate the state of the UI firmware's backlight control.
Note that we are NOT switching the actual Luna LCD backlight here,
even though it is trivially controlled with a GPIO. The reason for
this seemingly strange choice is that we don't want to turn this
development board LCD backlight off until we bring the higher-level
backlight control logic up to par, including new logic to "swallow"
the first keypress that turns on the darkened LCD.
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Sat, 24 Oct 2020 07:39:54 +0000 (2020-10-24) |
parents | 4e78acac3d88 |
children |
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/*************************************************************************/ /* */ /* 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 */ /* */ /* qud.c Nucleus PLUS 1.14 */ /* */ /* COMPONENT */ /* */ /* QU - Queue Management */ /* */ /* DESCRIPTION */ /* */ /* This file contains global data structures for use within the */ /* queue management component. */ /* */ /* DATA STRUCTURES */ /* */ /* QUD_Created_Queue_List Pointer to the linked-list */ /* of created queues */ /* QUD_Total_Queues Total number of created */ /* queues */ /* QUD_List_Protect Queue list protection */ /* */ /* FUNCTIONS */ /* */ /* None */ /* */ /* DEPENDENCIES */ /* */ /* qu_defs.h Queue Management constants */ /* tc_defs.h Thread Control constants */ /* */ /* HISTORY */ /* */ /* DATE REMARKS */ /* */ /* 03-01-1993 Created initial version 1.0 */ /* 04-19-1993 Verified version 1.0 */ /* 03-01-1994 Modified copyright, resulting in */ /* version 1.1 */ /* */ /* 03-18-1994 Verified version 1.1 */ /* 04-17-1996 updated to version 1.2 */ /* 03-24-1998 Released version 1.3 */ /* 03-26-1999 Released 1.11m (new release */ /* numbering scheme) */ /* 04-17-2002 Released version 1.13m */ /* 11-07-2002 Released version 1.14 */ /*************************************************************************/ #define NU_SOURCE_FILE #include "qu_defs.h" /* Queue constants */ /* QUD_Created_Queues_List is the head pointer of the linked list of created queues. If the list is NU_NULL, there are no queues created. */ CS_NODE *QUD_Created_Queues_List; /* QUD_Total_Queues contains the number of currently created queues. */ UNSIGNED QUD_Total_Queues; /* QUD_List_Protect is a list protection structure used to block any other thread from access to the created queue list. */ TC_PROTECT QUD_List_Protect;