You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
159 lines
4.9 KiB
159 lines
4.9 KiB
/**************************************************************************** |
|
* up_idle.c |
|
* |
|
* Copyright (C) 2007-2009, 2011-2012 Gregory Nutt. All rights reserved. |
|
* Author: Gregory Nutt <gnutt@nuttx.org> |
|
* |
|
* Redistribution and use in source and binary forms, with or without |
|
* modification, are permitted provided that the following conditions |
|
* are met: |
|
* |
|
* 1. Redistributions of source code must retain the above copyright |
|
* notice, this list of conditions and the following disclaimer. |
|
* 2. Redistributions in binary form must reproduce the above copyright |
|
* notice, this list of conditions and the following disclaimer in |
|
* the documentation and/or other materials provided with the |
|
* distribution. |
|
* 3. Neither the name NuttX nor the names of its contributors may be |
|
* used to endorse or promote products derived from this software |
|
* without specific prior written permission. |
|
* |
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
|
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
|
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
|
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS |
|
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
|
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN |
|
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
|
* POSSIBILITY OF SUCH DAMAGE. |
|
* |
|
****************************************************************************/ |
|
|
|
/**************************************************************************** |
|
* Included Files |
|
****************************************************************************/ |
|
|
|
#include <nuttx/config.h> |
|
|
|
#include <time.h> |
|
|
|
#include <nuttx/arch.h> |
|
#include <nuttx/power/pm.h> |
|
|
|
#include "up_internal.h" |
|
|
|
/**************************************************************************** |
|
* Private Definitions |
|
****************************************************************************/ |
|
|
|
/**************************************************************************** |
|
* Private Data |
|
****************************************************************************/ |
|
|
|
#ifdef CONFIG_SIM_X11FB |
|
static int g_x11refresh = 0; |
|
#endif |
|
|
|
/**************************************************************************** |
|
* Public Function Prototypes |
|
****************************************************************************/ |
|
|
|
#if defined(CONFIG_SIM_WALLTIME) || defined(CONFIG_SIM_X11FB) |
|
extern int up_hostusleep(unsigned int usec); |
|
#ifdef CONFIG_SIM_X11FB |
|
extern void up_x11update(void); |
|
#endif |
|
#endif |
|
|
|
/**************************************************************************** |
|
* Private Functions |
|
****************************************************************************/ |
|
|
|
/**************************************************************************** |
|
* Public Functions |
|
****************************************************************************/ |
|
|
|
/**************************************************************************** |
|
* Name: up_idle |
|
* |
|
* Description: |
|
* up_idle() is the logic that will be executed when their |
|
* is no other ready-to-run task. This is processor idle |
|
* time and will continue until some interrupt occurs to |
|
* cause a context switch from the idle task. |
|
* |
|
* Processing in this state may be processor-specific. e.g., |
|
* this is where power management operations might be |
|
* performed. |
|
* |
|
****************************************************************************/ |
|
|
|
void up_idle(void) |
|
{ |
|
/* If the system is idle, then process "fake" timer interrupts. |
|
* Hopefully, something will wake up. |
|
*/ |
|
|
|
sched_process_timer(); |
|
|
|
/* Run the network if enabled */ |
|
|
|
#ifdef CONFIG_NET |
|
uipdriver_loop(); |
|
#endif |
|
|
|
/* Fake some power management stuff for testing purposes */ |
|
|
|
#ifdef CONFIG_PM |
|
{ |
|
static enum pm_state_e state = PM_NORMAL; |
|
enum pm_state_e newstate; |
|
|
|
newstate = pm_checkstate(); |
|
if (newstate != state) |
|
{ |
|
if (pm_changestate(newstate) == OK) |
|
{ |
|
state = newstate; |
|
} |
|
} |
|
} |
|
#endif |
|
|
|
/* Wait a bit so that the sched_process_timer() is called close to the |
|
* correct rate. |
|
*/ |
|
|
|
#if defined(CONFIG_SIM_WALLTIME) || defined(CONFIG_SIM_X11FB) |
|
(void)up_hostusleep(1000000 / CLK_TCK); |
|
|
|
/* Handle X11-related events */ |
|
|
|
#ifdef CONFIG_SIM_X11FB |
|
if (g_x11initialized) |
|
{ |
|
/* Drive the X11 event loop */ |
|
|
|
#ifdef CONFIG_SIM_TOUCHSCREEN |
|
if (g_eventloop) |
|
{ |
|
up_x11events(); |
|
} |
|
#endif |
|
|
|
/* Update the display periodically */ |
|
|
|
g_x11refresh += 1000000 / CLK_TCK; |
|
if (g_x11refresh > 500000) |
|
{ |
|
up_x11update(); |
|
} |
|
} |
|
#endif |
|
#endif |
|
} |
|
|
|
|