apps/display-demo/app_tank.c File Reference

Display demo process control application. More...

#include <assert.h>
#include <gfx/gfx.h>
#include <gfx/win.h>
#include <gfx/wtk.h>
#include <gfx/sysfont.h>
#include <mainloop.h>
#include <membag.h>
#include <physmem.h>
#include <status_codes.h>
#include <string.h>
#include <timer.h>
#include <util.h>
#include "app_tank.h"
#include <workqueue.h>
#include "app_desktop.h"
#include "file_loader.h"

Go to the source code of this file.

Data Structures
struct	tank_context
	Context for the water tank application. More...
Defines
Color scheme
#define	COLOR_WIN_BACKGROUND   GFX_COLOR(0, 0, 0)
	Color to initially fill screen with.
#define	COLOR_LEVEL_FILL   GFX_COLOR(0, 0, 255)
	Fill color for tank level indicator.
#define	COLOR_LEVEL_BACKGROUND   GFX_COLOR(32, 32, 32)
	Background color for tank level indicator.
#define	COLOR_DEMAND_NORMAL   GFX_COLOR(64, 192, 64)
	Normal fill color for demand indicator.
#define	COLOR_DEMAND_CRITICAL   GFX_COLOR(192, 64, 64)
	Critical fill color for demand indicator.
#define	COLOR_DEMAND_BACKGROUND   GFX_COLOR(32, 32, 32)
	Background color for demand indicator.
Maximum and initial values of process parameters
#define	VALUE_LEVEL_MAXIMUM   127
	Maximum level of tank.
#define	VALUE_LEVEL_INITIAL   0
	Initial level of tank.
#define	VALUE_SUPPLY_MAXIMUM   VALUE_LEVEL_MAXIMUM
	Maximum value of supply.
#define	VALUE_SUPPLY_INITIAL   (VALUE_SUPPLY_MAXIMUM / 2)
	Initial value of supply.
#define	VALUE_DEMAND_MAXIMUM   VALUE_LEVEL_MAXIMUM
	Maximum value of demand.
#define	VALUE_DEMAND_INITIAL   0
	Initial value of demand.
Widget sizes and positions
#define	WIDGET_LEVEL_SIZE_X   52
	Height of progress bar for tank level.
#define	WIDGET_LEVEL_SIZE_Y   121
	Width of progress bar for tank level.
#define	WIDGET_LEVEL_POSITION_X   134
	X coordinate of progress bar for tank level.
#define	WIDGET_LEVEL_POSITION_Y   59
	Y coordinate of progress bar for tank level.
#define	WIDGET_SUPPLY_SIZE_X   37
	Height of slider for supply.
#define	WIDGET_SUPPLY_SIZE_Y   105
	Width of slider for supply.
#define	WIDGET_SUPPLY_POSITION_X   39
	X coordinate of slider for supply.
#define	WIDGET_SUPPLY_POSITION_Y   85
	Y coordinate of slider for supply.
#define	WIDGET_DEMAND_SIZE_X   20
	Height of progress bar for demand indication.
#define	WIDGET_DEMAND_SIZE_Y   45
	Width of progress bar for demand indication.
#define	WIDGET_DEMAND_POSITION_X   250
	X coordinate of progress bar for demand indication.
#define	WIDGET_DEMAND_POSITION_Y   100
	Y coordinator of progress bar for demand indication.
Bitmap filenames, sizes and positions
#define	BITMAP_BACKGROUND_FILENAME   "p_tankbg"
	Filename of background bitmap.
#define	BITMAP_BACKGROUND_SIZE_X   320
	Width of background bitmap.
#define	BITMAP_BACKGROUND_SIZE_Y   240
	Height of background bitmap.
#define	BITMAP_BACKGROUND_POSITION_X   0
	X coordinate of background bitmap.
#define	BITMAP_BACKGROUND_POSITION_Y   0
	Y coordinate of background bitmap.
#define	BITMAP_RED_LIGHT_FILENAME   "p_lgtred"
	Filename of red alarm light bitmap.
#define	BITMAP_GREEN_LIGHT_FILENAME   "p_lgtgrn"
	Filename of green alarm light bitmap.
#define	BITMAP_LIGHT_SIZE_X   38
	Width of alarm light bitmap.
#define	BITMAP_LIGHT_SIZE_Y   38
	Height of alarm light bitmap.
#define	BITMAP_LIGHT_POSITION_X   241
	X coordinate of alarm light bitmap.
#define	BITMAP_LIGHT_POSITION_Y   26
	Y coordinate of alarm light bitmap.
Application timing configuration
#define	TICK_RATE   30
	Application tick rate.
#define	TICKS_PER_RANDOM_UPDATE   9
	Application ticks between each update of random variable.
Enumerations
enum	tank_loader_state { LOAD_RED_LIGHT, LOAD_GREEN_LIGHT, LOAD_BACKGROUND, LOAD_FINISHED }
	States for the application loader task. More...
enum	tank_bitmap_id { BITMAP_RED_LIGHT, BITMAP_GREEN_LIGHT, NR_OF_BITMAPS }
	Enumeration of bitmaps to load to hugemem. More...
enum	tank_command_id { CMD_NONE, CMD_EXIT }
	Event command ID for application widgets. More...
Functions
static bool	tank_frame_handler (struct wtk_basic_frame *basic_frame, win_command_t command_data)
	Command event handler for the application's frame.
static int32_t	tank_logistic_map (int32_t rand)
	Compute new random value via a logistic map.
static void	tank_worker (struct workqueue_task *task)
	Application worker function.
static void	tank_timer_callback (struct timer *timer)
	Application timer callback function.
static void	tank_loader (struct workqueue_task *task)
	Application loader.
void	app_tank_launch (struct workqueue_task *task)
	Launch the water tank application.
Variables
static hugemem_ptr_t	tank_bitmap_data [NR_OF_BITMAPS]
	Pointers to bitmap data in hugemem.
static struct tank_context *	tank_ctx
	Pointer to water tank application context.

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Detailed Description

Display demo process control application.

Copyright (C) 2010 Atmel Corporation. All rights reserved.

Definition in file app_tank.c.