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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
parents 35f7a1dc9f7d
children
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;********************************************************************************
;*** File           : cci.pdf
;*** Creation       : Wed Mar 11 09:57:44 CST 2009
;*** XSLT Processor : Apache Software Foundation / http://xml.apache.org/xalan-j / supports XSLT-Ver: 1
;*** Copyright      : (c) Texas Instruments AG, Berlin Germany 2002
;********************************************************************************
;*** Document Type  : Service Access Point Specification
;*** Document Name  : cci
;*** Document No.   : 8441.118.00.017
;*** Document Date  : 2003-01-13
;*** Document Status: BEING_PROCESSED
;*** Document Author: UT
;********************************************************************************



PRAGMA 	SRC_FILE_TIME 	"Thu Nov 29 09:37:42 2007"
PRAGMA 	LAST_MODIFIED 	"2003-01-13"
PRAGMA 	ID_AND_VERSION 	"8441.118.00.017"






VALTAB 	VAL_algo_type
VAL 	0 	CCI_ALGO_V42 	"V42bis algorithm"

VALTAB 	VAL_comp_inst
VAL 	0 	CCI_COMP_INST_V42_0 	"first instance for V42bis"




VAR 	algo_type 	"algorithm type" 	B

VAL 	@p_cci - VAL_algo_type@ 	

VAR 	comp_inst 	"compressor instance" 	B

VAL 	@p_cci - VAL_comp_inst@ 	







; CCI_INIT_REQ 	0x3604



PRIM 	CCI_INIT_REQ 	0x3604
{
 	algo_type 	 ; algorithm type
 	comp_inst 	 ; compressor instance
}