[ECOS] Clear Screen

[ECOS] Clear Screen

[Magnus Ottosson]

Hi!

I wan't to know if it's possible to clear the screen or update a
specific line with eCos?

I have an application that writes data on the screen with printf() and I
want to clear this data and write new. Is there a clear screen function
or something like it?

Magnus

-----------------------------------
 Contact information
  Email: it3otma@ituniv.se


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[ECOS] Re: Clear Screen

[Grant Edwards]

In gmane.os.ecos.general, you wrote:

> I wan't to know if it's possible to clear the screen or update a
> specific line with eCos?

Depends on what screen you're using.

> I have an application that writes data on the screen with
> printf() and I want to clear this data and write new. Is there
> a clear screen function or something like it?

Assuming you're using an ANSI terminal, writing such functions
is pretty simple:

void clearScreen(void)
  {    
    printf("\033[2J")
  }

void clearToEOL(void)
  {
    printf("\033[K")  
  }  
  
void moveCursor(int row, int col)
  {
    printf("\033[%d;%dH",row, col)
  }  

and so on.
  
-- 
Grant Edwards                   grante             Yow!  Here I am in 53
                                  at               B.C. and all I want is a
                               visi.com            dill pickle!!

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Re: [ECOS] Re: Clear Screen

[Magnus Ottosson]

[-- Attachment #1: Type: text/plain, Size: 1192 bytes --]

I have compiled the application for i386 target. It shall run on a P4-M.
See atachment for my Makefile.

I have tried printf("\033[2J")

I will try:

void clearToEOL(void)
  {
    printf("\033[K")  
  }  
  
void moveCursor(int row, int col)
  {
    printf("\033[%d;%dH",row, col)
  }  

To if they work.

//Magnus.



Grant Edwards wrote:

>In gmane.os.ecos.general, you wrote:
>
>  
>
>>I wan't to know if it's possible to clear the screen or update a
>>specific line with eCos?
>>    
>>
>
>Depends on what screen you're using.
>
>  
>
>>I have an application that writes data on the screen with
>>printf() and I want to clear this data and write new. Is there
>>a clear screen function or something like it?
>>    
>>
>
>Assuming you're using an ANSI terminal, writing such functions
>is pretty simple:
>
>void clearScreen(void)
>  {    
>    printf("\033[2J")
>  }
>
>void clearToEOL(void)
>  {
>    printf("\033[K")  
>  }  
>  
>void moveCursor(int row, int col)
>  {
>    printf("\033[%d;%dH",row, col)
>  }  
>
>and so on.
>  
>  
>

-- 
-----------------------------------
 Contact information
  Phone: (+46) (0) 31 206700
  Mobile: (+46) (0) 733-908060
  Email: it3otma@ituniv.se


[-- Attachment #2: Makefile --]
[-- Type: text/plain, Size: 666 bytes --]

INSTALL_DIR = /home/supersonic/i386library_install
COMPILER_DIR = /opt/ecos/gnutools/i386-elf/bin
BOOT_DIR = /boot/
EXE_SOURCE = sigSonarServer.c
EXE_OUTPUT = sigSonarServer

include $(INSTALL_DIR)/include/pkgconf/ecos.mak

COMPILER = $(COMPILER_DIR)/i386-elf-gcc
COMPILER_FLAGS = -I$(INSTALL_DIR)/include
LINKER_FLAGS = -nostartfiles -L$(INSTALL_DIR)/lib -Ttarget.ld

$(EXE_OUTPUT): obj.o
	$(COMPILER) $(LINKER_FLAGS) $(ECOS_GLOBAL_LDFLAGS) -o $@ obj.o
	-rm -f obj.o 
obj.o: $(EXE_SOURCE)
	$(COMPILER) -c -o obj.o $(COMPILER_FLAGS) $(ECOS_GLOBAL_CFLAGS) \
	$(EXE_SOURCE)
	
.PHONY: clean install
clean:
		-rm -f $(EXE_OUTPUT)
install:
	cp ./$(EXE_OUTPUT) $(BOOT_DIR)

[-- Attachment #3: sigSonarServer.c --]
[-- Type: text/x-csrc, Size: 4174 bytes --]

/*/////////////////////////////////////////////////////////////////////////////

	Project:		Sea Grid
	
	Module:			Sonar Control
	
	Description:	
	
	Author:			Magnus Ottosson, it3otma@ituniv.se
	
	Co Authors:		N/A
	
	Created:		2005-03-31

//////////////////////////////////////////////////////////////////////////////*/

#include <stdlib.h>
#include <stdio.h>
#include <cyg/hal/hal_io.h>
#include <cyg/kernel/kapi.h>
#include <cyg/io/devtab.h>
#include "sigSonarControl/sigSonarControl.h"

#define KEYBOARD 0x60

void drawRootMenu(positions* currentPositions);
void drawPositionsMenu(positions* currentPositions);

void drawRootMenu(positions* currentPositions){
	
	printf("\033[K");
	printf("  -------------------------------------- \n");
	printf(" |        ++ Sonar Server ++            |\n");
	printf(" |           ~~~~~~~~~~~~               |\n");
	printf(" |     (1) See positions                |\n");
	printf(" |     (q) Quit                         |\n");
	printf(" |                                      |\n");
	printf(" |            Make a choice             |\n");
	printf(" |                                      |\n");
	printf("  -------------------------------------- \n");
	
	unsigned int input = 0;

	while (1) {
		
		HAL_READ_UINT8(KEYBOARD, input);

		if (input == 130) {
			drawPositionsMenu(currentPositions);
			break;
		} else if (input == 129) {
			// QUIT;
		}
	}
}

void drawPositionsMenu(positions* currentPositions){
	
	unsigned int input = 0;
	
	while (1) {
		
		HAL_READ_UINT8(KEYBOARD, input);
		
		printf("\033[K");
		printf("  -------------------------------------- \n");
		printf(" | ++ Sonar Server Current Positions ++ |\n");
	  	printf(" |           ~~~~~~~~~~~~               |\n");
	  	printf(" |     Lorry				            |\n");
	  	printf(" |     ----------------                 |\n");
	  	printf(" |     Front X: %d                      |\n",currentPositions -> currentLorryPos.frontX);
	  	printf(" |     Front Y: %d                      |\n",currentPositions -> currentLorryPos.frontY);
	  	printf(" |     Rear  X: %d                      |\n",currentPositions -> currentLorryPos.rearX);
	  	printf(" |     Rear  Y: %d                      |\n",currentPositions -> currentLorryPos.rearY);
	  	printf(" |     Angle  : %f               |\n",currentPositions -> currentLorryPos.angle);
	  	printf(" |                                      |\n");
	  	printf(" |     Barge                            |\n");
	  	printf(" |     ----------------                 |\n");
	  	printf(" |     Front X: %d                      |\n",currentPositions -> currentBargePos.frontX);
	  	printf(" |     Front Y: %d                      |\n",currentPositions -> currentBargePos.frontY);
	  	printf(" |     Rear  X: %d                      |\n",currentPositions -> currentBargePos.rearX);
	  	printf(" |     Rear  Y: %d                      |\n",currentPositions -> currentBargePos.rearY);
	  	printf(" |     Angle  : %f               |\n",currentPositions -> currentBargePos.angle);
	  	printf(" |                                      |\n");
	  	printf(" |   Press ESC to return to root menu   |\n");
	  	printf(" |                                      |\n");
	  	printf("  -------------------------------------- \n");

		if (input == 129) {
			drawRootMenu(currentPositions);
			break;
		}
	}
}


int main(void) {
	
	// Create the positions struct
	// Allocate the memory for the position struct.
	currentPositions = (positions*) malloc(sizeof(positions));
	// Initialize the values to -1
	currentPositions -> currentBargePos.angle = 1.0;
	currentPositions -> currentBargePos.frontX = 1;
	currentPositions -> currentBargePos.frontY = 1;
	currentPositions -> currentBargePos.rearX = 1;
	currentPositions -> currentBargePos.rearY = 1;
	
	currentPositions -> currentLorryPos.angle = 1.0;
	currentPositions -> currentLorryPos.frontX = 1;
	currentPositions -> currentLorryPos.frontY = 1;
	currentPositions -> currentLorryPos.rearX = 1;
	currentPositions -> currentLorryPos.rearY = 1;
	
	// TODO: Thread
	drawRootMenu(currentPositions);
	
	// TODO: Thread
	// startbeacons();
	
	// TODO: Thread
	// listenToRadioReceiver(currentPositions);	
	
	
	return 0;
}



[-- Attachment #4: Type: text/plain, Size: 148 bytes --]

-- 
Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos
and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss

Re: [ECOS] Re: Clear Screen

[Magnus Ottosson]

Neither of these options work. I guess that when I built eCos I did not
build it with a terminal that support ansi? How would I do this?

Magnus

Magnus Ottosson wrote:

>I have compiled the application for i386 target. It shall run on a P4-M.
>See atachment for my Makefile.
>
>I have tried printf("\033[2J")
>
>I will try:
>
>void clearToEOL(void)
>  {
>    printf("\033[K")  
>  }  
>  
>void moveCursor(int row, int col)
>  {
>    printf("\033[%d;%dH",row, col)
>  }  
>
>To if they work.
>
>//Magnus.
>
>
>
>Grant Edwards wrote:
>
>  
>
>>In gmane.os.ecos.general, you wrote:
>>
>> 
>>
>>    
>>
>>>I wan't to know if it's possible to clear the screen or update a
>>>specific line with eCos?
>>>   
>>>
>>>      
>>>
>>Depends on what screen you're using.
>>
>> 
>>
>>    
>>
>>>I have an application that writes data on the screen with
>>>printf() and I want to clear this data and write new. Is there
>>>a clear screen function or something like it?
>>>   
>>>
>>>      
>>>
>>Assuming you're using an ANSI terminal, writing such functions
>>is pretty simple:
>>
>>void clearScreen(void)
>> {    
>>   printf("\033[2J")
>> }
>>
>>void clearToEOL(void)
>> {
>>   printf("\033[K")  
>> }  
>> 
>>void moveCursor(int row, int col)
>> {
>>   printf("\033[%d;%dH",row, col)
>> }  
>>
>>and so on.
>> 
>> 
>>
>>    
>>
>
>  
>
>------------------------------------------------------------------------
>
>INSTALL_DIR = /home/supersonic/i386library_install
>COMPILER_DIR = /opt/ecos/gnutools/i386-elf/bin
>BOOT_DIR = /boot/
>EXE_SOURCE = sigSonarServer.c
>EXE_OUTPUT = sigSonarServer
>
>include $(INSTALL_DIR)/include/pkgconf/ecos.mak
>
>COMPILER = $(COMPILER_DIR)/i386-elf-gcc
>COMPILER_FLAGS = -I$(INSTALL_DIR)/include
>LINKER_FLAGS = -nostartfiles -L$(INSTALL_DIR)/lib -Ttarget.ld
>
>$(EXE_OUTPUT): obj.o
>	$(COMPILER) $(LINKER_FLAGS) $(ECOS_GLOBAL_LDFLAGS) -o $@ obj.o
>	-rm -f obj.o 
>obj.o: $(EXE_SOURCE)
>	$(COMPILER) -c -o obj.o $(COMPILER_FLAGS) $(ECOS_GLOBAL_CFLAGS) \
>	$(EXE_SOURCE)
>	
>.PHONY: clean install
>clean:
>		-rm -f $(EXE_OUTPUT)
>install:
>	cp ./$(EXE_OUTPUT) $(BOOT_DIR)
>
>------------------------------------------------------------------------
>
>/*/////////////////////////////////////////////////////////////////////////////
>
>	Project:		Sea Grid
>	
>	Module:			Sonar Control
>	
>	Description:	
>	
>	Author:			Magnus Ottosson, it3otma@ituniv.se
>	
>	Co Authors:		N/A
>	
>	Created:		2005-03-31
>
>//////////////////////////////////////////////////////////////////////////////*/
>
>#include <stdlib.h>
>#include <stdio.h>
>#include <cyg/hal/hal_io.h>
>#include <cyg/kernel/kapi.h>
>#include <cyg/io/devtab.h>
>#include "sigSonarControl/sigSonarControl.h"
>
>#define KEYBOARD 0x60
>
>void drawRootMenu(positions* currentPositions);
>void drawPositionsMenu(positions* currentPositions);
>
>void drawRootMenu(positions* currentPositions){
>	
>	printf("\033[K");
>	printf("  -------------------------------------- \n");
>	printf(" |        ++ Sonar Server ++            |\n");
>	printf(" |           ~~~~~~~~~~~~               |\n");
>	printf(" |     (1) See positions                |\n");
>	printf(" |     (q) Quit                         |\n");
>	printf(" |                                      |\n");
>	printf(" |            Make a choice             |\n");
>	printf(" |                                      |\n");
>	printf("  -------------------------------------- \n");
>	
>	unsigned int input = 0;
>
>	while (1) {
>		
>		HAL_READ_UINT8(KEYBOARD, input);
>
>		if (input == 130) {
>			drawPositionsMenu(currentPositions);
>			break;
>		} else if (input == 129) {
>			// QUIT;
>		}
>	}
>}
>
>void drawPositionsMenu(positions* currentPositions){
>	
>	unsigned int input = 0;
>	
>	while (1) {
>		
>		HAL_READ_UINT8(KEYBOARD, input);
>		
>		printf("\033[K");
>		printf("  -------------------------------------- \n");
>		printf(" | ++ Sonar Server Current Positions ++ |\n");
>	  	printf(" |           ~~~~~~~~~~~~               |\n");
>	  	printf(" |     Lorry				            |\n");
>	  	printf(" |     ----------------                 |\n");
>	  	printf(" |     Front X: %d                      |\n",currentPositions -> currentLorryPos.frontX);
>	  	printf(" |     Front Y: %d                      |\n",currentPositions -> currentLorryPos.frontY);
>	  	printf(" |     Rear  X: %d                      |\n",currentPositions -> currentLorryPos.rearX);
>	  	printf(" |     Rear  Y: %d                      |\n",currentPositions -> currentLorryPos.rearY);
>	  	printf(" |     Angle  : %f               |\n",currentPositions -> currentLorryPos.angle);
>	  	printf(" |                                      |\n");
>	  	printf(" |     Barge                            |\n");
>	  	printf(" |     ----------------                 |\n");
>	  	printf(" |     Front X: %d                      |\n",currentPositions -> currentBargePos.frontX);
>	  	printf(" |     Front Y: %d                      |\n",currentPositions -> currentBargePos.frontY);
>	  	printf(" |     Rear  X: %d                      |\n",currentPositions -> currentBargePos.rearX);
>	  	printf(" |     Rear  Y: %d                      |\n",currentPositions -> currentBargePos.rearY);
>	  	printf(" |     Angle  : %f               |\n",currentPositions -> currentBargePos.angle);
>	  	printf(" |                                      |\n");
>	  	printf(" |   Press ESC to return to root menu   |\n");
>	  	printf(" |                                      |\n");
>	  	printf("  -------------------------------------- \n");
>
>		if (input == 129) {
>			drawRootMenu(currentPositions);
>			break;
>		}
>	}
>}
>
>
>int main(void) {
>	
>	// Create the positions struct
>	// Allocate the memory for the position struct.
>	currentPositions = (positions*) malloc(sizeof(positions));
>	// Initialize the values to -1
>	currentPositions -> currentBargePos.angle = 1.0;
>	currentPositions -> currentBargePos.frontX = 1;
>	currentPositions -> currentBargePos.frontY = 1;
>	currentPositions -> currentBargePos.rearX = 1;
>	currentPositions -> currentBargePos.rearY = 1;
>	
>	currentPositions -> currentLorryPos.angle = 1.0;
>	currentPositions -> currentLorryPos.frontX = 1;
>	currentPositions -> currentLorryPos.frontY = 1;
>	currentPositions -> currentLorryPos.rearX = 1;
>	currentPositions -> currentLorryPos.rearY = 1;
>	
>	// TODO: Thread
>	drawRootMenu(currentPositions);
>	
>	// TODO: Thread
>	// startbeacons();
>	
>	// TODO: Thread
>	// listenToRadioReceiver(currentPositions);	
>	
>	
>	return 0;
>}
>
>
>  
>

-- 
-----------------------------------
 Contact information
  Phone: (+46) (0) 31 206700
  Mobile: (+46) (0) 733-908060
  Email: it3otma@ituniv.se


-- 
Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos
and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss

RE: [ECOS] Re: Clear Screen

[Frank Pagliughi]

i386 Target, huh? Are you sending the output to a serial port or to a VGA
screen? If a serial port, then it's the terminal emulator program on the
host that needs to ANSI support, not your application.

If you're using a VGA screen, you can always write directly to the video
memory. In text mode, it starts at 0xB8000. Search the web for more info, or
look for an old book on DOS. I don't know how eCos positions the cursor on a
VGA screen, though. So printf() positions won't automatically be restarted
at the top left after clearing.

Here's an example for a standard VGA in standard 80x25 text mode:


// --------------------------------------
// conio_test.c
//
// Test of the PC console I/O functions.
// These are fast direct-to-video-memory routines.

#include <stdio.h>
typedef unsigned char byte;

#define SCR_WD	80
#define SCR_HT	25

typedef struct tag_chel
{
	char	ch;		// Char displayed
	byte	attr;		// FG & BG colors
}
	chel;

typedef chel chel_line[80];

chel_line *pc_scr = ((chel_line*) 0xB8000);

static byte	scrattr	= 0x07;	// White FG on black BG

// --------------------------------------

void clrscr(void)
{
	int x, y;

	for (y=0; y<SCR_HT; y++) {
		for (x=0; x<SCR_WD; x++) {
			pc_scr[y][x].ch = ' ';
			pc_scr[y][x].attr = scrattr;
		}
	}
}

// ------------------------------------

int main (int argc, char *argv[])
{
	clrscr();

	pc_scr[0][0].ch = 'A';
	pc_scr[0][1].ch = '*';

	return(0);
}

-----Original Message-----
From: ecos-discuss-owner@ecos.sourceware.org
[mailto:ecos-discuss-owner@ecos.sourceware.org]On Behalf Of Magnus
Ottosson
Sent: Friday, April 15, 2005 4:40 AM
Cc: ecos-discuss@ecos.sourceware.org
Subject: Re: [ECOS] Re: Clear Screen


Neither of these options work. I guess that when I built eCos I did not
build it with a terminal that support ansi? How would I do this?

Magnus

Magnus Ottosson wrote:

>I have compiled the application for i386 target. It shall run on a P4-M.
>See atachment for my Makefile.
>
>I have tried printf("\033[2J")
>
>I will try:
>
>void clearToEOL(void)
>  {
>    printf("\033[K")
>  }
>
>void moveCursor(int row, int col)
>  {
>    printf("\033[%d;%dH",row, col)
>  }
>
>To if they work.
>
>//Magnus.
>
>
>
>Grant Edwards wrote:
>
>
>
>>In gmane.os.ecos.general, you wrote:
>>
>>
>>
>>
>>
>>>I wan't to know if it's possible to clear the screen or update a
>>>specific line with eCos?
>>>
>>>
>>>
>>>
>>Depends on what screen you're using.
>>
>>
>>
>>
>>
>>>I have an application that writes data on the screen with
>>>printf() and I want to clear this data and write new. Is there
>>>a clear screen function or something like it?
>>>
>>>
>>>
>>>
>>Assuming you're using an ANSI terminal, writing such functions
>>is pretty simple:
>>
>>void clearScreen(void)
>> {
>>   printf("\033[2J")
>> }
>>
>>void clearToEOL(void)
>> {
>>   printf("\033[K")
>> }
>>
>>void moveCursor(int row, int col)
>> {
>>   printf("\033[%d;%dH",row, col)
>> }
>>
>>and so on.
>>
>>
>>
>>
>>
>
>
>
>------------------------------------------------------------------------
>
>INSTALL_DIR = /home/supersonic/i386library_install
>COMPILER_DIR = /opt/ecos/gnutools/i386-elf/bin
>BOOT_DIR = /boot/
>EXE_SOURCE = sigSonarServer.c
>EXE_OUTPUT = sigSonarServer
>
>include $(INSTALL_DIR)/include/pkgconf/ecos.mak
>
>COMPILER = $(COMPILER_DIR)/i386-elf-gcc
>COMPILER_FLAGS = -I$(INSTALL_DIR)/include
>LINKER_FLAGS = -nostartfiles -L$(INSTALL_DIR)/lib -Ttarget.ld
>
>$(EXE_OUTPUT): obj.o
>	$(COMPILER) $(LINKER_FLAGS) $(ECOS_GLOBAL_LDFLAGS) -o $@ obj.o
>	-rm -f obj.o
>obj.o: $(EXE_SOURCE)
>	$(COMPILER) -c -o obj.o $(COMPILER_FLAGS) $(ECOS_GLOBAL_CFLAGS) \
>	$(EXE_SOURCE)
>
>.PHONY: clean install
>clean:
>		-rm -f $(EXE_OUTPUT)
>install:
>	cp ./$(EXE_OUTPUT) $(BOOT_DIR)
>
>------------------------------------------------------------------------
>
>/*/////////////////////////////////////////////////////////////////////////
////
>
>	Project:		Sea Grid
>
>	Module:			Sonar Control
>
>	Description:
>
>	Author:			Magnus Ottosson, it3otma@ituniv.se
>
>	Co Authors:		N/A
>
>	Created:		2005-03-31
>
>///////////////////////////////////////////////////////////////////////////
///*/
>
>#include <stdlib.h>
>#include <stdio.h>
>#include <cyg/hal/hal_io.h>
>#include <cyg/kernel/kapi.h>
>#include <cyg/io/devtab.h>
>#include "sigSonarControl/sigSonarControl.h"
>
>#define KEYBOARD 0x60
>
>void drawRootMenu(positions* currentPositions);
>void drawPositionsMenu(positions* currentPositions);
>
>void drawRootMenu(positions* currentPositions){
>
>	printf("\033[K");
>	printf("  -------------------------------------- \n");
>	printf(" |        ++ Sonar Server ++            |\n");
>	printf(" |           ~~~~~~~~~~~~               |\n");
>	printf(" |     (1) See positions                |\n");
>	printf(" |     (q) Quit                         |\n");
>	printf(" |                                      |\n");
>	printf(" |            Make a choice             |\n");
>	printf(" |                                      |\n");
>	printf("  -------------------------------------- \n");
>
>	unsigned int input = 0;
>
>	while (1) {
>
>		HAL_READ_UINT8(KEYBOARD, input);
>
>		if (input == 130) {
>			drawPositionsMenu(currentPositions);
>			break;
>		} else if (input == 129) {
>			// QUIT;
>		}
>	}
>}
>
>void drawPositionsMenu(positions* currentPositions){
>
>	unsigned int input = 0;
>
>	while (1) {
>
>		HAL_READ_UINT8(KEYBOARD, input);
>
>		printf("\033[K");
>		printf("  -------------------------------------- \n");
>		printf(" | ++ Sonar Server Current Positions ++ |\n");
>	  	printf(" |           ~~~~~~~~~~~~               |\n");
>	  	printf(" |     Lorry				            |\n");
>	  	printf(" |     ----------------                 |\n");
>	  	printf(" |     Front X: %d
                     |\n",currentPositions -> currentLorryPos.frontX);
>	  	printf(" |     Front Y: %d
                     |\n",currentPositions -> currentLorryPos.frontY);
>	  	printf(" |     Rear  X: %d
                     |\n",currentPositions -> currentLorryPos.rearX);
>	  	printf(" |     Rear  Y: %d
                     |\n",currentPositions -> currentLorryPos.rearY);
>	  	printf(" |     Angle  : %f               |\n",currentPositions ->
currentLorryPos.angle);
>	  	printf(" |                                      |\n");
>	  	printf(" |     Barge                            |\n");
>	  	printf(" |     ----------------                 |\n");
>	  	printf(" |     Front X: %d
                     |\n",currentPositions -> currentBargePos.frontX);
>	  	printf(" |     Front Y: %d
                     |\n",currentPositions -> currentBargePos.frontY);
>	  	printf(" |     Rear  X: %d
                     |\n",currentPositions -> currentBargePos.rearX);
>	  	printf(" |     Rear  Y: %d
                     |\n",currentPositions -> currentBargePos.rearY);
>	  	printf(" |     Angle  : %f               |\n",currentPositions ->
currentBargePos.angle);
>	  	printf(" |                                      |\n");
>	  	printf(" |   Press ESC to return to root menu   |\n");
>	  	printf(" |                                      |\n");
>	  	printf("  -------------------------------------- \n");
>
>		if (input == 129) {
>			drawRootMenu(currentPositions);
>			break;
>		}
>	}
>}
>
>
>int main(void) {
>
>	// Create the positions struct
>	// Allocate the memory for the position struct.
>	currentPositions = (positions*) malloc(sizeof(positions));
>	// Initialize the values to -1
>	currentPositions -> currentBargePos.angle = 1.0;
>	currentPositions -> currentBargePos.frontX = 1;
>	currentPositions -> currentBargePos.frontY = 1;
>	currentPositions -> currentBargePos.rearX = 1;
>	currentPositions -> currentBargePos.rearY = 1;
>
>	currentPositions -> currentLorryPos.angle = 1.0;
>	currentPositions -> currentLorryPos.frontX = 1;
>	currentPositions -> currentLorryPos.frontY = 1;
>	currentPositions -> currentLorryPos.rearX = 1;
>	currentPositions -> currentLorryPos.rearY = 1;
>
>	// TODO: Thread
>	drawRootMenu(currentPositions);
>
>	// TODO: Thread
>	// startbeacons();
>
>	// TODO: Thread
>	// listenToRadioReceiver(currentPositions);
>
>
>	return 0;
>}
>
>
>
>

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RE: [ECOS] Re: Clear Screen

[Frank Pagliughi]

Oh, one more thing...

A serial terminal emulator may also clear it's display if you send it a Form
Feed character:

  putchar('\f');

Frank

-----Original Message-----
From: ecos-discuss-owner@ecos.sourceware.org
[mailto:ecos-discuss-owner@ecos.sourceware.org]On Behalf Of Magnus
Ottosson
Sent: Friday, April 15, 2005 4:40 AM
Cc: ecos-discuss@ecos.sourceware.org
Subject: Re: [ECOS] Re: Clear Screen


Neither of these options work. I guess that when I built eCos I did not
build it with a terminal that support ansi? How would I do this?

Magnus

Magnus Ottosson wrote:

>I have compiled the application for i386 target. It shall run on a P4-M.
>See atachment for my Makefile.
>
>I have tried printf("\033[2J")
>
>I will try:
>
>void clearToEOL(void)
>  {
>    printf("\033[K")
>  }
>
>void moveCursor(int row, int col)
>  {
>    printf("\033[%d;%dH",row, col)
>  }
>
>To if they work.
>
>//Magnus.
>
>
>
>Grant Edwards wrote:
>
>
>
>>In gmane.os.ecos.general, you wrote:
>>
>>
>>
>>
>>
>>>I wan't to know if it's possible to clear the screen or update a
>>>specific line with eCos?
>>>
>>>
>>>
>>>
>>Depends on what screen you're using.
>>
>>
>>
>>
>>
>>>I have an application that writes data on the screen with
>>>printf() and I want to clear this data and write new. Is there
>>>a clear screen function or something like it?
>>>
>>>
>>>
>>>
>>Assuming you're using an ANSI terminal, writing such functions
>>is pretty simple:
>>
>>void clearScreen(void)
>> {
>>   printf("\033[2J")
>> }
>>
>>void clearToEOL(void)
>> {
>>   printf("\033[K")
>> }
>>
>>void moveCursor(int row, int col)
>> {
>>   printf("\033[%d;%dH",row, col)
>> }
>>
>>and so on.
>>
>>
>>
>>
>>
>
>
>
>------------------------------------------------------------------------
>
>INSTALL_DIR = /home/supersonic/i386library_install
>COMPILER_DIR = /opt/ecos/gnutools/i386-elf/bin
>BOOT_DIR = /boot/
>EXE_SOURCE = sigSonarServer.c
>EXE_OUTPUT = sigSonarServer
>
>include $(INSTALL_DIR)/include/pkgconf/ecos.mak
>
>COMPILER = $(COMPILER_DIR)/i386-elf-gcc
>COMPILER_FLAGS = -I$(INSTALL_DIR)/include
>LINKER_FLAGS = -nostartfiles -L$(INSTALL_DIR)/lib -Ttarget.ld
>
>$(EXE_OUTPUT): obj.o
>	$(COMPILER) $(LINKER_FLAGS) $(ECOS_GLOBAL_LDFLAGS) -o $@ obj.o
>	-rm -f obj.o
>obj.o: $(EXE_SOURCE)
>	$(COMPILER) -c -o obj.o $(COMPILER_FLAGS) $(ECOS_GLOBAL_CFLAGS) \
>	$(EXE_SOURCE)
>
>.PHONY: clean install
>clean:
>		-rm -f $(EXE_OUTPUT)
>install:
>	cp ./$(EXE_OUTPUT) $(BOOT_DIR)
>
>------------------------------------------------------------------------
>
>/*/////////////////////////////////////////////////////////////////////////
////
>
>	Project:		Sea Grid
>
>	Module:			Sonar Control
>
>	Description:
>
>	Author:			Magnus Ottosson, it3otma@ituniv.se
>
>	Co Authors:		N/A
>
>	Created:		2005-03-31
>
>///////////////////////////////////////////////////////////////////////////
///*/
>
>#include <stdlib.h>
>#include <stdio.h>
>#include <cyg/hal/hal_io.h>
>#include <cyg/kernel/kapi.h>
>#include <cyg/io/devtab.h>
>#include "sigSonarControl/sigSonarControl.h"
>
>#define KEYBOARD 0x60
>
>void drawRootMenu(positions* currentPositions);
>void drawPositionsMenu(positions* currentPositions);
>
>void drawRootMenu(positions* currentPositions){
>
>	printf("\033[K");
>	printf("  -------------------------------------- \n");
>	printf(" |        ++ Sonar Server ++            |\n");
>	printf(" |           ~~~~~~~~~~~~               |\n");
>	printf(" |     (1) See positions                |\n");
>	printf(" |     (q) Quit                         |\n");
>	printf(" |                                      |\n");
>	printf(" |            Make a choice             |\n");
>	printf(" |                                      |\n");
>	printf("  -------------------------------------- \n");
>
>	unsigned int input = 0;
>
>	while (1) {
>
>		HAL_READ_UINT8(KEYBOARD, input);
>
>		if (input == 130) {
>			drawPositionsMenu(currentPositions);
>			break;
>		} else if (input == 129) {
>			// QUIT;
>		}
>	}
>}
>
>void drawPositionsMenu(positions* currentPositions){
>
>	unsigned int input = 0;
>
>	while (1) {
>
>		HAL_READ_UINT8(KEYBOARD, input);
>
>		printf("\033[K");
>		printf("  -------------------------------------- \n");
>		printf(" | ++ Sonar Server Current Positions ++ |\n");
>	  	printf(" |           ~~~~~~~~~~~~               |\n");
>	  	printf(" |     Lorry				            |\n");
>	  	printf(" |     ----------------                 |\n");
>	  	printf(" |     Front X: %d
                     |\n",currentPositions -> currentLorryPos.frontX);
>	  	printf(" |     Front Y: %d
                     |\n",currentPositions -> currentLorryPos.frontY);
>	  	printf(" |     Rear  X: %d
                     |\n",currentPositions -> currentLorryPos.rearX);
>	  	printf(" |     Rear  Y: %d
                     |\n",currentPositions -> currentLorryPos.rearY);
>	  	printf(" |     Angle  : %f               |\n",currentPositions ->
currentLorryPos.angle);
>	  	printf(" |                                      |\n");
>	  	printf(" |     Barge                            |\n");
>	  	printf(" |     ----------------                 |\n");
>	  	printf(" |     Front X: %d
                     |\n",currentPositions -> currentBargePos.frontX);
>	  	printf(" |     Front Y: %d
                     |\n",currentPositions -> currentBargePos.frontY);
>	  	printf(" |     Rear  X: %d
                     |\n",currentPositions -> currentBargePos.rearX);
>	  	printf(" |     Rear  Y: %d
                     |\n",currentPositions -> currentBargePos.rearY);
>	  	printf(" |     Angle  : %f               |\n",currentPositions ->
currentBargePos.angle);
>	  	printf(" |                                      |\n");
>	  	printf(" |   Press ESC to return to root menu   |\n");
>	  	printf(" |                                      |\n");
>	  	printf("  -------------------------------------- \n");
>
>		if (input == 129) {
>			drawRootMenu(currentPositions);
>			break;
>		}
>	}
>}
>
>
>int main(void) {
>
>	// Create the positions struct
>	// Allocate the memory for the position struct.
>	currentPositions = (positions*) malloc(sizeof(positions));
>	// Initialize the values to -1
>	currentPositions -> currentBargePos.angle = 1.0;
>	currentPositions -> currentBargePos.frontX = 1;
>	currentPositions -> currentBargePos.frontY = 1;
>	currentPositions -> currentBargePos.rearX = 1;
>	currentPositions -> currentBargePos.rearY = 1;
>
>	currentPositions -> currentLorryPos.angle = 1.0;
>	currentPositions -> currentLorryPos.frontX = 1;
>	currentPositions -> currentLorryPos.frontY = 1;
>	currentPositions -> currentLorryPos.rearX = 1;
>	currentPositions -> currentLorryPos.rearY = 1;
>
>	// TODO: Thread
>	drawRootMenu(currentPositions);
>
>	// TODO: Thread
>	// startbeacons();
>
>	// TODO: Thread
>	// listenToRadioReceiver(currentPositions);
>
>
>	return 0;
>}
>
>
>
>

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-----------------------------------
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  Mobile: (+46) (0) 733-908060
  Email: it3otma@ituniv.se


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[ECOS] Re: Clear Screen

[Grant Edwards]

In gmane.os.ecos.general, you wrote:

> Neither of these options work. I guess that when I built eCos I did not
> build it with a terminal that support ansi?

You don't need to build it with a terminal that supports ANSI.
You connect an ANSI terminal to it when you run it.

-- 
Grant Edwards                   grante             Yow!  I want to read my new
                                  at               poem about pork brains and
                               visi.com            outer space...

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[ECOS] Re: Clear Screen

[Grant Edwards]

In gmane.os.ecos.general, you wrote:

> I have compiled the application for i386 target. It shall run on a P4-M.

Ah, but we didn't ask what kind of CPU.  We asked what kind of
screen.  

Is it an ANSI terminal or not?  The functions I posted were for
ANSI terminals.

-- 
Grant Edwards                   grante             Yow!  I'm EMOTIONAL
                                  at               now because I have
                               visi.com            MERCHANDISING CLOUT!!

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Re: [ECOS] Clear Screen

[Gary Thomas]

On Thu, 2005-04-14 at 17:24 +0200, Magnus Ottosson wrote:
> Hi!
> 
> I wan't to know if it's possible to clear the screen or update a
> specific line with eCos?
> 
> I have an application that writes data on the screen with printf() and I
> want to clear this data and write new. Is there a clear screen function
> or something like it?

What screen?  What [target] platform?

-- 
------------------------------------------------------------
Gary Thomas                 |  Consulting for the
MLB Associates              |    Embedded world
------------------------------------------------------------


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[ECOS] Insight gdb Preferences under Linux Hoat

[Frank Pagliughi]

Where does Insight store it's preferences on a Linux host? I recently
upgraded my Linux host to FC3, and now I have to reset all my global,
source, and target preferences each time I run it. I'm assuming I no longer
have write access to a directory.

I'm using the binary distribution of i386-elf-gdb from eCos 2.0.

Thanks,
Frank Pagliughi



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Re: [ECOS] Insight gdb Preferences under Linux Hoat

[dirk husemann]

[-- Attachment #1: Type: text/plain, Size: 1070 bytes --]

On Thursday, 14. April 2005 18:03, Frank Pagliughi wrote:
> Where does Insight store it's preferences on a Linux host? I recently
> upgraded my Linux host to FC3, and now I have to reset all my global,
> source, and target preferences each time I run it. I'm assuming I no longer
> have write access to a directory.
>
> I'm using the binary distribution of i386-elf-gdb from eCos 2.0.

.gdbtkinit ? don't know for sure, just assumed that that was where insight 
stores its stuff.

	cheers,
	dirk

-- 
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	hud@zurich.ibm.com --- http://www.zurich.ibm.com/~hud/
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Re: [ECOS] Insight gdb Preferences under Linux Hoat

[dirk husemann]

[-- Attachment #1: Type: text/plain, Size: 1070 bytes --]

On Thursday, 14. April 2005 18:03, Frank Pagliughi wrote:
> Where does Insight store it's preferences on a Linux host? I recently
> upgraded my Linux host to FC3, and now I have to reset all my global,
> source, and target preferences each time I run it. I'm assuming I no longer
> have write access to a directory.
>
> I'm using the binary distribution of i386-elf-gdb from eCos 2.0.

.gdbtkinit ? don't know for sure, just assumed that that was where insight 
stores its stuff.

	cheers,
	dirk

-- 
Dr Dirk Husemann, Pervasive Computing, IBM Research, Zurich Research Lab
	hud@zurich.ibm.com --- http://www.zurich.ibm.com/~hud/
       PGP key: http://www.zurich.ibm.com/~hud/contact/PGP
  PGP Fingerprint: 983C 48E7 0A78 A313 401C  C4AD 3C0A 278E 6431 A149
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is a good starting point.

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Re: [ECOS] Clear Screen

[Nick Garnett]

Magnus Ottosson <it3otma@ituniv.se> writes:

> Hi!
> 
> I wan't to know if it's possible to clear the screen or update a
> specific line with eCos?
> 
> I have an application that writes data on the screen with printf() and I
> want to clear this data and write new. Is there a clear screen function
> or something like it?

If you are working on a PC with the standard HAL screen support, then
sending a Ctrl-L should do the trick.

If you are using either HyperTerm or minicom over a serial line, then
the escape sequences that Grant has supplied should work.

Finally you could just output 25 linefeeds, which will work whatever
output channel you are using.


-- 
Nick Garnett                                     eCos Kernel Architect
http://www.ecoscentric.com                The eCos and RedBoot experts


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