FreeCalypso > hg > fc-tourmaline
view src/nucleus/tcfe.c @ 51:04aaa5622fa7
disable deep sleep when Iota LEDB is on
TI's Iota chip docs say that CLK13M must be running in order for
LEDB to work, and practical experience on Mot C139 which uses
Iota LEDB for its keypad backlight concurs: if Calypso enters
deep sleep while the keypad backlight is turned on, the light
flickers visibly as the chipset goes into and out of deep sleep.
TI's original L1 sleep manager code had logic to disable deep sleep
when LT_Status() returns nonzero, but that function only works
for B-Sample and C-Sample LT, always returns 0 on BOARD 41 - no
check of Iota LEDB status anywhere. Change this code for our
current hardware: disable deep sleep when Iota LEDB has been
turned on through LLS.
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Mon, 19 Oct 2020 05:11:29 +0000 |
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 */ /* */ /* tcfe.c Nucleus PLUS 1.14 */ /* */ /* COMPONENT */ /* */ /* TC - Thread Control */ /* */ /* DESCRIPTION */ /* */ /* This file contains routines that check parameters to the */ /* routines that return information about a thread. */ /* */ /* DATA STRUCTURES */ /* */ /* None */ /* */ /* FUNCTIONS */ /* */ /* TCFE_Task_Information Retrieve task information */ /* */ /* DEPENDENCIES */ /* */ /* tc_extr.h Thread Control functions */ /* */ /* HISTORY */ /* */ /* DATE REMARKS */ /* */ /* 11-07-2002 Released version 1.14 */ /* */ /*************************************************************************/ #define NU_SOURCE_FILE #include "tc_extr.h" /* Thread control functions */ /*************************************************************************/ /* */ /* FUNCTION */ /* */ /* TCFE_Task_Information */ /* */ /* DESCRIPTION */ /* */ /* This function performs error checking on the parameters supplied */ /* to the function that returns information about a task. */ /* */ /* CALLED BY */ /* */ /* Application */ /* */ /* CALLS */ /* */ /* [TCT_Check_Stack] Stack checking function */ /* TCT_System_Protect Protect scheduling info */ /* TCT_Unprotect Release protection */ /* TCF_Task_Information Returns task information */ /* */ /* INPUTS */ /* */ /* task_ptr Pointer to the task */ /* name Destination for the name */ /* status Destination for task status */ /* scheduled_count Destination for scheduled */ /* count of the task */ /* priority Destination for task priority*/ /* preempt Destination for preempt flag */ /* time_slice Destination for time slice */ /* stack_base Destination for pointer to */ /* base of task's stack */ /* stack_size Destination for stack size */ /* minimum_stack Destination for the minimum */ /* running size of the stack */ /* */ /* OUTPUTS */ /* */ /* NU_SUCCESS If a valid task pointer is */ /* supplied */ /* NU_INVALID_TASK If task pointer is invalid */ /* */ /* HISTORY */ /* */ /* DATE REMARKS */ /* */ /* 03-01-1993 Created initial version 1.0 */ /* */ /*************************************************************************/ STATUS TCFE_Task_Information(NU_TASK *task_ptr, CHAR *name, DATA_ELEMENT *status, UNSIGNED *scheduled_count, DATA_ELEMENT *priority, OPTION *preempt, UNSIGNED *time_slice, VOID **stack_base, UNSIGNED *stack_size, UNSIGNED *minimum_stack) { STATUS completion; /* Completion status */ NU_SUPERV_USER_VARIABLES /* Switch to supervisor mode */ NU_SUPERVISOR_MODE(); #ifdef NU_ENABLE_STACK_CHECK /* Call stack checking function to check for an overflow condition. */ TCT_Check_Stack(); #endif /* Check if parameters are valid. task is tested in TCF_Task_Inforation */ if (name == NU_NULL) completion = NU_INVALID_POINTER; else if (preempt == NU_NULL) completion = NU_INVALID_POINTER; else if (status == NU_NULL) completion = NU_INVALID_POINTER; else if (scheduled_count == NU_NULL) completion = NU_INVALID_POINTER; else if (priority == NU_NULL) completion = NU_INVALID_POINTER; else if (time_slice == NU_NULL) completion = NU_INVALID_POINTER; else if (stack_base == NU_NULL) completion = NU_INVALID_POINTER; else if (stack_size == NU_NULL) completion = NU_INVALID_POINTER; else if (minimum_stack == NU_NULL) completion = NU_INVALID_POINTER; else completion = TCF_Task_Information(task_ptr, name, status, scheduled_count, priority, preempt, time_slice, stack_base, stack_size, minimum_stack); TCT_Unprotect(); /* Return to user mode */ NU_USER_MODE(); return(completion); }