Started work on tp7

ctris_changes.patch

@@ -0,0 +1,413 @@
+diff --git a/Makefile b/Makefile
+index 9831a3a..482f39c 100644
+--- a/Makefile
++++ b/Makefile
+@@ -2,12 +2,12 @@
+ MANDIR=$(DESTDIR)/usr/share/man/man6/
+ BINDIR=$(DESTDIR)/usr/games/
+ 
+-CC=gcc
++CC=arm-buildroot-linux-musleabi-gcc
+ MKDIR=mkdir -p
+ INSTALL=install
+ 
+-CFLAGS=-Wall -fomit-frame-pointer -O3
+-LIBS=-lm -lncurses
++CFLAGS=-Wall -fomit-frame-pointer -O3 -I/home/moi/tp/lib/ncurses/buildNcurse/usr/include
++LIBS=-L/home/moi/tp/lib/ncurses/buildNcurse/usr/lib -lm -lncursesw
+ 
+ OBJS=ctris.o game.o screen.o brick.o highscore.o
+ OUTPUT=ctris
+diff --git a/brick.o b/brick.o
+new file mode 100644
+index 0000000..8a0e376
+Binary files /dev/null and b/brick.o differ
+diff --git a/config.h b/config.h
+new file mode 100644
+index 0000000..8b13789
+--- /dev/null
++++ b/config.h
+@@ -0,0 +1 @@
++
+diff --git a/ctris b/ctris
+new file mode 100755
+index 0000000..9ed491c
+Binary files /dev/null and b/ctris differ
+diff --git a/ctris.o b/ctris.o
+new file mode 100644
+index 0000000..5972bc7
+Binary files /dev/null and b/ctris.o differ
+diff --git a/game.c b/game.c
+index 7a2bea0..b3d4a45 100644
+--- a/game.c
++++ b/game.c
+@@ -16,6 +16,20 @@ void init_board(char board[BOARD_HEIGHT][BOARD_WIDTH])
+ 	}
+ }
+ 
++// NEW CODE
++#define PATH_MODULE "/dev/mylab1_joystick"
++int fd;
++int buffer[5] = {1,1,1,1,1};
++int read_err;
++int init_mylab(){
++    fd = open(PATH_MODULE,O_RDONLY,S_IRUSR);
++    if(fd < 0){
++        printf("Could not retrieve mylab driver\n");
++        return fd;
++    }
++}
++//
++
+ void remove_this_row(WINDOW *win, char board[BOARD_HEIGHT][BOARD_WIDTH], unsigned char y)
+ {
+ 	unsigned char x;
+@@ -88,6 +102,12 @@ unsigned int game_engine(bool resize)
+     static bool engine_stop = false;
+ 
+ 	show_headline();
++
++    // NEW CODE
++
++    init_mylab();
++
++    //
+         
+     if (resize) {
+         if (game_state != PAUSED_STATE) {
+@@ -147,7 +167,28 @@ unsigned int game_engine(bool resize)
+ 		while(game_state == RUNNING_STATE)
+ 		{
+ 			show_board_win(board_win, board, cur_brick, brick_type, x, y);
+-			switch(get_key(board_win))
++
++            int keyValue = get_key(board_win);
++
++            // NEW CODE
++            // Update KEY_STATE
++            read_err = read(fd,buffer,5 * sizeof(int));
++            if(read_err < 0)
++                printf("Could not read module\n");
++
++            if(!buffer[0])
++                keyValue = KEY_UP;
++            if(!buffer[1])
++                keyValue = KEY_DOWN;
++            if(!buffer[2])
++                keyValue = KEY_LEFT;
++            if(!buffer[3])
++                keyValue = KEY_RIGHT;
++            if(!buffer[4])
++                keyValue = 'p';
++            //
++
++			switch(keyValue)
+ 			{
+ 				case 's':
+ 				case KEY_DOWN:
+@@ -278,5 +319,3 @@ unsigned int game_engine(bool resize)
+     engine_stop = true;
+ 	return score;
+ }
+-
+-
+diff --git a/game.o b/game.o
+new file mode 100644
+index 0000000..1da7f4d
+Binary files /dev/null and b/game.o differ
+diff --git a/highscore.o b/highscore.o
+new file mode 100644
+index 0000000..44a44c1
+Binary files /dev/null and b/highscore.o differ
+diff --git a/oldgame.c b/oldgame.c
+new file mode 100644
+index 0000000..7a2bea0
+--- /dev/null
++++ b/oldgame.c
+@@ -0,0 +1,282 @@
++#include "ctris.h"
++#include "game.h"
++#include "brick.h"
++#include "screen.h"
++#include "highscore.h"
++
++void init_board(char board[BOARD_HEIGHT][BOARD_WIDTH])
++{
++	unsigned char i, n;
++	for(i = 0; i < BOARD_HEIGHT; i++)
++	{
++		for(n = 0; n < BOARD_WIDTH; n++)
++		{
++			board[i][n] = 0;
++		}
++	}
++}
++
++void remove_this_row(WINDOW *win, char board[BOARD_HEIGHT][BOARD_WIDTH], unsigned char y)
++{
++	unsigned char x;
++	show_remove_row(win, board, y);
++	for(; y > 0; y--)
++	{
++		for(x = 0; x < BOARD_WIDTH; x++)
++		{
++			board[y][x] = board[y - 1][x];
++		}
++	}
++}
++
++void remove_rows(WINDOW *win, char board[BOARD_HEIGHT][BOARD_WIDTH], unsigned int *score, const char level)
++{
++	char removed_rows = 0;
++	unsigned char x, y;
++	unsigned int sub_score = 0;
++	for(y = 0; y < BOARD_HEIGHT; y++)
++	{
++		for(x = 0; x < BOARD_WIDTH; x++)
++		{
++			if(board[y][x] == 0)
++			{
++				break;
++			}
++		}
++		if(x >= BOARD_WIDTH)
++		{
++			remove_this_row(win, board, y);
++			removed_rows++;
++			sub_score += BONUS_CONST * level * removed_rows;
++		}
++	}
++	*score += sub_score;
++	if(removed_rows > 0)
++	{
++		refresh_win(win);
++		usleep(REMOVE_SPLASH_TIME);
++	}
++}
++
++void calc_level(const unsigned int score, char *level)
++{
++	while(SPEED_CONST_2 - (*level + 1) * SPEED_CONST_1 >= 0 && score / (LEVEL_CONST * (unsigned int)pow((double)*level, 2)) > 0)
++	{
++		*level += 1;
++	}
++}
++
++void pause_game()
++{
++        game_engine(true);
++}
++
++unsigned int start_game()
++{
++        return game_engine(false);
++}
++
++unsigned int game_engine(bool resize)
++{
++	static char brick_type, next_brick_type, name[40], cur_brick[4][4], board[BOARD_HEIGHT][BOARD_WIDTH], level = 1;
++	char run;
++	unsigned int score = 0;
++    static unsigned long time = 0L;
++    unsigned int tick = 0;
++	static unsigned char x, y;
++	static WINDOW *board_win, *preview_win, *score_win;
++    static bool engine_stop = false;
++
++	show_headline();
++        
++    if (resize) {
++        if (game_state != PAUSED_STATE) {
++            // if the game engine is in the RUNING_STATE then
++            // the resize call below will switch the engine to PAUSED_STATE
++            
++            // if the game is in the QUIT_STATE then
++            // the call below will simulate a key being pressed
++            // and that will force the highscore screen or play_again dialog to be refreshed
++            put_key('p');
++        }
++
++    	if (game_state == QUIT_STATE)
++        {
++            // if the game is in the highscore screen then refresh it upon resize
++            if (!engine_stop) {
++                show_highscore(name);
++            }
++        }
++        else
++        {
++            // here we will only have RUNNING_STATE, PAUSED_STATE or GAME_OVER_STATE
++            // both states coresponds to the main screen so
++            // the main screen will be refreshed upon resize
++            show_score(score_win, score, level, time);
++            show_brick_preview(preview_win, next_brick_type);
++            show_board_win(board_win, board, cur_brick, brick_type, x, y);
++            if (game_state == PAUSED_STATE) {
++                    show_pause(board_win);
++            }
++            else if (game_state == GAME_OVER_STATE) {
++                    show_game_over(board_win);
++            }
++        }
++        return score;
++    }
++    
++    engine_stop = false;
++	board_win = (WINDOW *)create_board_win();
++	preview_win = (WINDOW *)create_preview_win();
++	score_win = (WINDOW *)create_score_win();
++	init_board(board);
++	show_score(score_win, score, level, time);
++	next_brick_type = get_rand(7) + 1;
++	game_state = PAUSED_STATE;
++	wait_for_start(board_win);
++	game_state = RUNNING_STATE;
++	while(game_state == RUNNING_STATE)
++	{
++		brick_type = next_brick_type;
++		next_brick_type = get_rand(7) + 1;
++		show_brick_preview(preview_win, next_brick_type);
++		memcpy(cur_brick, brick_digit[brick_type - 1], sizeof(char) * 4 * 4);
++		x = BOARD_WIDTH / 2;
++		y = 0;
++		run = 1;
++		while(game_state == RUNNING_STATE)
++		{
++			show_board_win(board_win, board, cur_brick, brick_type, x, y);
++			switch(get_key(board_win))
++			{
++				case 's':
++				case KEY_DOWN:
++					if(old_style_keys != 0)
++					{
++						if(counterclockwise_rotation == 1)
++						{
++							change_direction(board, cur_brick, x, y, -1);
++						}
++						else
++						{
++							change_direction(board, cur_brick, x, y, 1);
++						}
++					}
++					else
++					{
++						if(check_brick(board, cur_brick, x, y + 1) == 0)
++						{
++							y++;
++						}
++					}
++					break;
++				case 'w':
++				case 'k':
++				case KEY_UP:
++					if(counterclockwise_rotation == 1)
++					{
++						change_direction(board, cur_brick, x, y, 1);
++					}
++					else
++					{
++						change_direction(board, cur_brick, x, y, -1);
++					}
++					break;
++				case 'd':
++				case 'l':
++				case KEY_RIGHT:
++					if(check_brick(board, cur_brick, x + 1, y) == 0)
++					{
++						x++;
++					}
++					break;
++				case 'a':
++				case 'j':
++				case KEY_LEFT:
++					if(x > 0 && check_brick(board, cur_brick, x - 1, y) == 0)
++					{
++						x--;
++					}
++					break;
++				case ' ':
++					if(old_style_keys != 0)
++					{
++						if(check_brick(board, cur_brick, x, y + 1) == 0)
++						{
++							y++;
++						}
++					}
++					else
++					{
++						while(check_brick(board, cur_brick, x, y + 1) == 0)
++						{
++							y++;
++						}
++					}
++					break;
++				case 'p':
++					game_state = PAUSED_STATE;
++					show_pause(board_win);
++                    while(old_get_key(board_win) != 'p');
++					game_state = RUNNING_STATE;
++					break;
++				case 'q':
++					game_state = QUIT_STATE;
++					break;
++			}
++            tick = SPEED_CONST_2 - level * SPEED_CONST_1;
++            time += tick;
++			show_score(score_win, score, level, time);
++			usleep(tick);
++			if(run > 15)
++			{
++				if(check_brick(board, cur_brick, x, y + 1) == 0)
++				{
++					y++;
++					run = 0;
++				}
++				else
++				{
++					if(y <= 1)
++					{
++						game_state = GAME_OVER_STATE;
++						show_game_over(board_win);
++                        while(old_get_key(board_win) != ' ');
++						game_state = QUIT_STATE;
++					}
++					draw_to_board(board, cur_brick, brick_type, x, y);
++					show_board_win(board_win, board, cur_brick, brick_type, x, y);
++					remove_rows(board_win, board, &score, level);
++#ifdef EXTRA_BONUS
++					score += level;
++#endif
++					calc_level(score, &level);
++					show_score(score_win, score, level, time);
++					break;
++				}
++			}
++			run++;
++		}
++		
++	}
++	destroy_score_win(score_win);
++	destroy_preview_win(preview_win);
++	destroy_board_win(board_win);
++	if(game_state == QUIT_STATE)
++	{
++		if(in_highscore(score) == 0)
++		{
++			add_user_to_highscore(name, score);
++		}
++		else
++		{
++			strncpy(name, "-no-name-", 40);
++		}
++		show_highscore(name);
++    	getch();
++	}
++    engine_stop = true;
++	return score;
++}
++
++
+diff --git a/screen.o b/screen.o
+new file mode 100644
+index 0000000..3ea2576
+Binary files /dev/null and b/screen.o differ

eval.md

@@ -22,3 +22,30 @@ eval: 0.9
 - Q11 :  qu’avez-vous réalisé pour obtenir un noyau compressé en xz ?
 - Q11 : oublié de calculer le % disque gagné p/r à la version gz
 - «comme ma» : attention à relire votre rapport
+
+# lab05
+
+eval: 0.7
+
+- Que veut dire cette phrase ? "dans /etc/ touch passwd et touch group"
+- on ajoute le group "addgroup nogroup" : ceci n’a aucun sens. Attention à relire ce que vous écrivez.
+- «Si on cat le repertoire group» : incorrect, on ne peut pas cat un répertoire
+- "On peut aller modifier ensuite le fichier user pour" : quel est ce fichier «user» ?
+- nogroup devrait plutôt être un group système
+- Vous oubliez de changer l’ownership de /var/www de manière récursive
+- En dehors de /var/www, aucune mise en place de l’ownership et des permission du reste du rootfs
+- « de faire les bons chmods a la racine pour assigner les bonnes autorisations je vais pas tout citer ici.» : le but est exactement de tout citer, afin de voir si ce que vous réalisez est correct ou pas
+- Attention à la case : pas «SDA», mais «sda» (ce n’est pas le même fichier)
+- mdev.conf : regex incorrecte (aussi, explication incorrecte de celle-ci)
+- mdev.conf : mauvais propriétaire
+- mdev.conf : mauvaises permissions
+- mdev.conf : pourquoi @ ?
+- script appelé par mdev : mount en read-write : incorrect ; aussi, vous copiez tout plutôt que seulement des images
+- Vous vous compliquez nettement la tâche pour faire apparaître les img sur votre serveur web. Pourquoi ne pas simplement les copier dans /var/www/upload/files/ ?
+- Aucune gestion d’erreurs dans votre script appelé par mdev ?
+- Où/comment démarrez vous le service mdev ?
+- Vous vous compliquez inutilement la vie avec les modules : il suffit simplement d’utiliser la cible modules_install du noyau pour qu’ils soient copiés au bon endroit dans le rootfs de votre cible
+- «ca ne marche plus car les modules ne sont pas montés.» : attention à la précision du vocabulaire : les modules ne sont jamais montés, mais chargés
+- Pensez à ré-écrire les questions dans votre journal
+- Quels sont les modules chargés dans votre noyau ? (cf. lsmod)
+- Preuve que votre noyau avec les nouveaux modules chargés gère encore la clé usb correctement ?

game.c

@@ -0,0 +1,321 @@
+#include "ctris.h"
+#include "game.h"
+#include "brick.h"
+#include "screen.h"
+#include "highscore.h"
+
+void init_board(char board[BOARD_HEIGHT][BOARD_WIDTH])
+{
+	unsigned char i, n;
+	for(i = 0; i < BOARD_HEIGHT; i++)
+	{
+		for(n = 0; n < BOARD_WIDTH; n++)
+		{
+			board[i][n] = 0;
+		}
+	}
+}
+
+// NEW CODE
+#define PATH_MODULE "/dev/mylab1_joystick"
+int fd;
+int buffer[5] = {1,1,1,1,1};
+int read_err;
+int init_mylab(){
+    fd = open(PATH_MODULE,O_RDONLY,S_IRUSR);
+    if(fd < 0){
+        printf("Could not retrieve mylab driver\n");
+        return fd;
+    }
+}
+//
+
+void remove_this_row(WINDOW *win, char board[BOARD_HEIGHT][BOARD_WIDTH], unsigned char y)
+{
+	unsigned char x;
+	show_remove_row(win, board, y);
+	for(; y > 0; y--)
+	{
+		for(x = 0; x < BOARD_WIDTH; x++)
+		{
+			board[y][x] = board[y - 1][x];
+		}
+	}
+}
+
+void remove_rows(WINDOW *win, char board[BOARD_HEIGHT][BOARD_WIDTH], unsigned int *score, const char level)
+{
+	char removed_rows = 0;
+	unsigned char x, y;
+	unsigned int sub_score = 0;
+	for(y = 0; y < BOARD_HEIGHT; y++)
+	{
+		for(x = 0; x < BOARD_WIDTH; x++)
+		{
+			if(board[y][x] == 0)
+			{
+				break;
+			}
+		}
+		if(x >= BOARD_WIDTH)
+		{
+			remove_this_row(win, board, y);
+			removed_rows++;
+			sub_score += BONUS_CONST * level * removed_rows;
+		}
+	}
+	*score += sub_score;
+	if(removed_rows > 0)
+	{
+		refresh_win(win);
+		usleep(REMOVE_SPLASH_TIME);
+	}
+}
+
+void calc_level(const unsigned int score, char *level)
+{
+	while(SPEED_CONST_2 - (*level + 1) * SPEED_CONST_1 >= 0 && score / (LEVEL_CONST * (unsigned int)pow((double)*level, 2)) > 0)
+	{
+		*level += 1;
+	}
+}
+
+void pause_game()
+{
+        game_engine(true);
+}
+
+unsigned int start_game()
+{
+        return game_engine(false);
+}
+
+unsigned int game_engine(bool resize)
+{
+	static char brick_type, next_brick_type, name[40], cur_brick[4][4], board[BOARD_HEIGHT][BOARD_WIDTH], level = 1;
+	char run;
+	unsigned int score = 0;
+    static unsigned long time = 0L;
+    unsigned int tick = 0;
+	static unsigned char x, y;
+	static WINDOW *board_win, *preview_win, *score_win;
+    static bool engine_stop = false;
+
+	show_headline();
+
+    // NEW CODE
+
+    init_mylab();
+
+    //
+        
+    if (resize) {
+        if (game_state != PAUSED_STATE) {
+            // if the game engine is in the RUNING_STATE then
+            // the resize call below will switch the engine to PAUSED_STATE
+            
+            // if the game is in the QUIT_STATE then
+            // the call below will simulate a key being pressed
+            // and that will force the highscore screen or play_again dialog to be refreshed
+            put_key('p');
+        }
+
+    	if (game_state == QUIT_STATE)
+        {
+            // if the game is in the highscore screen then refresh it upon resize
+            if (!engine_stop) {
+                show_highscore(name);
+            }
+        }
+        else
+        {
+            // here we will only have RUNNING_STATE, PAUSED_STATE or GAME_OVER_STATE
+            // both states coresponds to the main screen so
+            // the main screen will be refreshed upon resize
+            show_score(score_win, score, level, time);
+            show_brick_preview(preview_win, next_brick_type);
+            show_board_win(board_win, board, cur_brick, brick_type, x, y);
+            if (game_state == PAUSED_STATE) {
+                    show_pause(board_win);
+            }
+            else if (game_state == GAME_OVER_STATE) {
+                    show_game_over(board_win);
+            }
+        }
+        return score;
+    }
+    
+    engine_stop = false;
+	board_win = (WINDOW *)create_board_win();
+	preview_win = (WINDOW *)create_preview_win();
+	score_win = (WINDOW *)create_score_win();
+	init_board(board);
+	show_score(score_win, score, level, time);
+	next_brick_type = get_rand(7) + 1;
+	game_state = PAUSED_STATE;
+	wait_for_start(board_win);
+	game_state = RUNNING_STATE;
+	while(game_state == RUNNING_STATE)
+	{
+		brick_type = next_brick_type;
+		next_brick_type = get_rand(7) + 1;
+		show_brick_preview(preview_win, next_brick_type);
+		memcpy(cur_brick, brick_digit[brick_type - 1], sizeof(char) * 4 * 4);
+		x = BOARD_WIDTH / 2;
+		y = 0;
+		run = 1;
+		while(game_state == RUNNING_STATE)
+		{
+			show_board_win(board_win, board, cur_brick, brick_type, x, y);
+
+            int keyValue = get_key(board_win);
+
+            // NEW CODE
+            // Update KEY_STATE
+            read_err = read(fd,buffer,5 * sizeof(int));
+            if(read_err < 0)
+                printf("Could not read module\n");
+
+            if(!buffer[0])
+                keyValue = KEY_UP;
+            if(!buffer[1])
+                keyValue = KEY_DOWN;
+            if(!buffer[2])
+                keyValue = KEY_LEFT;
+            if(!buffer[3])
+                keyValue = KEY_RIGHT;
+            if(!buffer[4])
+                keyValue = 'p';
+            //
+
+			switch(keyValue)
+			{
+				case 's':
+				case KEY_DOWN:
+					if(old_style_keys != 0)
+					{
+						if(counterclockwise_rotation == 1)
+						{
+							change_direction(board, cur_brick, x, y, -1);
+						}
+						else
+						{
+							change_direction(board, cur_brick, x, y, 1);
+						}
+					}
+					else
+					{
+						if(check_brick(board, cur_brick, x, y + 1) == 0)
+						{
+							y++;
+						}
+					}
+					break;
+				case 'w':
+				case 'k':
+				case KEY_UP:
+					if(counterclockwise_rotation == 1)
+					{
+						change_direction(board, cur_brick, x, y, 1);
+					}
+					else
+					{
+						change_direction(board, cur_brick, x, y, -1);
+					}
+					break;
+				case 'd':
+				case 'l':
+				case KEY_RIGHT:
+					if(check_brick(board, cur_brick, x + 1, y) == 0)
+					{
+						x++;
+					}
+					break;
+				case 'a':
+				case 'j':
+				case KEY_LEFT:
+					if(x > 0 && check_brick(board, cur_brick, x - 1, y) == 0)
+					{
+						x--;
+					}
+					break;
+				case ' ':
+					if(old_style_keys != 0)
+					{
+						if(check_brick(board, cur_brick, x, y + 1) == 0)
+						{
+							y++;
+						}
+					}
+					else
+					{
+						while(check_brick(board, cur_brick, x, y + 1) == 0)
+						{
+							y++;
+						}
+					}
+					break;
+				case 'p':
+					game_state = PAUSED_STATE;
+					show_pause(board_win);
+                    while(old_get_key(board_win) != 'p');
+					game_state = RUNNING_STATE;
+					break;
+				case 'q':
+					game_state = QUIT_STATE;
+					break;
+			}
+            tick = SPEED_CONST_2 - level * SPEED_CONST_1;
+            time += tick;
+			show_score(score_win, score, level, time);
+			usleep(tick);
+			if(run > 15)
+			{
+				if(check_brick(board, cur_brick, x, y + 1) == 0)
+				{
+					y++;
+					run = 0;
+				}
+				else
+				{
+					if(y <= 1)
+					{
+						game_state = GAME_OVER_STATE;
+						show_game_over(board_win);
+                        while(old_get_key(board_win) != ' ');
+						game_state = QUIT_STATE;
+					}
+					draw_to_board(board, cur_brick, brick_type, x, y);
+					show_board_win(board_win, board, cur_brick, brick_type, x, y);
+					remove_rows(board_win, board, &score, level);
+#ifdef EXTRA_BONUS
+					score += level;
+#endif
+					calc_level(score, &level);
+					show_score(score_win, score, level, time);
+					break;
+				}
+			}
+			run++;
+		}
+		
+	}
+	destroy_score_win(score_win);
+	destroy_preview_win(preview_win);
+	destroy_board_win(board_win);
+	if(game_state == QUIT_STATE)
+	{
+		if(in_highscore(score) == 0)
+		{
+			add_user_to_highscore(name, score);
+		}
+		else
+		{
+			strncpy(name, "-no-name-", 40);
+		}
+		show_highscore(name);
+    	getch();
+	}
+    engine_stop = true;
+	return score;
+}

module.c

@@ -0,0 +1,201 @@
+#include <linux/module.h>
+#include <linux/device.h>
+#include <linux/fs.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/interrupt.h>
+#include <linux/gpio.h>
+
+const int JOYSTICK_UP = 16;     //GPIO0
+const int JOYSTICK_DOWN = 17;   //GPIO0
+const int JOYSTICK_LEFT = 21;   //GPIO0
+const int JOYSTICK_RIGHT = 27 + 32;  //GPIO1 offset of 32 on GPIO 1
+const int JOYSTICK_BUTTON = 23; //GPIO0
+
+#define IRQ_NAME "myjoystick_irq"
+int irqNbr_UP,irqNbr_DOWN,irqNbr_LEFT,irqNbr_RIGHT,irqNbr_BUTTON = 0;
+static int UP,DOWN,LEFT,RIGHT,BUTTON = 0;
+
+int major;
+struct class *j_class;
+struct device *j_device;
+
+// Operation prototypes
+static int dev_open(struct inode *, struct file *);
+static ssize_t dev_read(struct file *filep, char __user *buffer, size_t len, loff_t *offset){
+    int joystick_status[5] = {UP,DOWN,LEFT,RIGHT,BUTTON};
+    int data_len = 5*sizeof(int);
+    // Copy data to user-space buffer
+    if (copy_to_user(buffer, joystick_status, data_len)) {
+        pr_err("Failed to send data to user\n");
+        return -EFAULT;
+    }
+    return 0;
+}
+
+// The driver's file operations
+static const struct file_operations fops = {
+	.owner = THIS_MODULE,
+	.open = dev_open,
+    .read = dev_read
+};
+
+/*
+ * Joystick IRQ handler
+ */
+static irqreturn_t mylab_irq_handler(int irq, void *dev_id) {
+    int gpio = (int)dev_id; // GPIO number passed as dev_id
+    int value = gpio_get_value(gpio); // Get the current GPIO value
+    switch(gpio){
+        case JOYSTICK_UP:
+            UP = value;
+        break;
+        case JOYSTICK_DOWN:
+            DOWN = value;
+        break;
+        case JOYSTICK_LEFT:
+            LEFT = value;
+        break;
+        case JOYSTICK_RIGHT:
+            RIGHT = value;
+        break;
+        case JOYSTICK_BUTTON:
+            BUTTON = value;
+        break;
+        default:
+            //Wtf?
+        break;
+    }
+	return (irqreturn_t) IRQ_HANDLED;
+}
+
+/**
+ * Driver initialization code. 
+ */
+static int __init mylab1_joystick_dev_init(void) {
+	// TODO
+	// 1) Register the device by dynamically obtaining a major number
+    major = register_chrdev(0, "mylab1_joystick", &fops);
+    if(major < 0){
+        pr_info("mylab1_joystick: could not get a major number, initialisation failed\n");
+        return -1;
+    }
+	// 2) Create the class
+    j_class = class_create("mylab1_joystick");
+    if (IS_ERR(j_class)){
+        pr_info("mylab1_joystick: could not create class, initialisation failed\n");
+        return -1;
+    }
+    // 3) Create the device in /dev
+    j_device = device_create(j_class, NULL, MKDEV(major, 0), NULL, "mylab1_joystick");
+    if (IS_ERR(j_device)){
+        pr_info("mylab1_joystick: could not create device, initialisation failed\n");
+        return -1;
+    }
+	// 6) Request the necessary GPIOs
+    int err = 0;
+    err = gpio_request_one(JOYSTICK_UP,GPIOF_DIR_IN,"UP");
+    if(err != 0)
+        pr_info("mylab1_joystick: Could not request GPIO %d\n",JOYSTICK_UP);
+    err = gpio_request_one(JOYSTICK_DOWN,GPIOF_DIR_IN,"DOWN");
+    if(err != 0)
+        pr_info("mylab1_joystick: Could not request GPIO %d\n",JOYSTICK_DOWN);
+    err = gpio_request_one(JOYSTICK_LEFT,GPIOF_DIR_IN,"UP");
+    if(err != 0)
+        pr_info("mylab1_joystick: Could not request GPIO %d\n",JOYSTICK_LEFT);
+    err = gpio_request_one(JOYSTICK_RIGHT,GPIOF_DIR_IN,"UP");
+    if(err != 0)
+        pr_info("mylab1_joystick: Could not request GPIO %d\n",JOYSTICK_RIGHT);
+    err = gpio_request_one(JOYSTICK_BUTTON,GPIOF_DIR_IN,"UP");
+    if(err != 0)
+        pr_info("mylab1_joystick: Could not request GPIO %d\n",JOYSTICK_BUTTON);
+	// 7) Register an IRQ handler per GPIO
+    int irqres = 0;
+
+    // JOYSTICK UP
+    irqNbr_UP = gpio_to_irq(JOYSTICK_UP);
+    if(irqNbr_UP < 0)
+        pr_info("mylab1_joystick: Could not request IRQ number on GPIO : %d\n",JOYSTICK_UP);
+
+    irqres = request_irq(irqNbr_UP, mylab_irq_handler, IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, IRQ_NAME, (void*)JOYSTICK_UP);
+    if(irqres < 0)
+        pr_info("mylab1_joystick: Could not request IRQ on GPIO : %d\n",JOYSTICK_UP);
+    //JOYSTICK DOWN
+    irqNbr_DOWN = gpio_to_irq(JOYSTICK_DOWN);
+    if(irqNbr_DOWN < 0)
+        pr_info("mylab1_joystick: Could not request IRQ number on GPIO : %d\n",JOYSTICK_DOWN);
+
+    irqres = request_irq(irqNbr_DOWN, mylab_irq_handler, IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, IRQ_NAME, (void*)JOYSTICK_DOWN);
+    if(irqres < 0)
+        pr_info("mylab1_joystick: Could not request IRQ on GPIO : %d\n",JOYSTICK_DOWN);
+    // JOYSTICK LEFT
+    irqNbr_LEFT = gpio_to_irq(JOYSTICK_LEFT);
+    if(irqNbr_LEFT < 0)
+        pr_info("mylab1_joystick: Could not request IRQ number on GPIO : %d\n",JOYSTICK_LEFT);
+
+    irqres = request_irq(irqNbr_LEFT, mylab_irq_handler, IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, IRQ_NAME, (void*)JOYSTICK_LEFT);
+    if(irqres < 0)
+        pr_info("mylab1_joystick: Could not request IRQ on GPIO : %d\n",JOYSTICK_LEFT);
+    // JOYSTICK RIGHT
+    irqNbr_RIGHT = gpio_to_irq(JOYSTICK_RIGHT);
+    if(irqNbr_RIGHT < 0)
+        pr_info("mylab1_joystick: Could not request IRQ number on GPIO : %d\n",JOYSTICK_RIGHT);
+
+    irqres = request_irq(irqNbr_RIGHT, mylab_irq_handler, IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, IRQ_NAME, (void*)JOYSTICK_RIGHT);
+    if(irqres < 0)
+        pr_info("mylab1_joystick: Could not request IRQ on GPIO : %d\n",JOYSTICK_RIGHT);
+    // JOYSTICK BUTTON
+    irqNbr_BUTTON = gpio_to_irq(JOYSTICK_BUTTON);
+    if(irqNbr_BUTTON < 0)
+        pr_info("mylab1_joystick: Could not request IRQ number on GPIO : %d\n",JOYSTICK_BUTTON);
+
+    irqres = request_irq(irqNbr_BUTTON, mylab_irq_handler, IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, IRQ_NAME, (void*)JOYSTICK_BUTTON);
+    if(irqres < 0)
+        pr_info("mylab1_joystick: Could not request IRQ on GPIO : %d\n",JOYSTICK_BUTTON);
+
+    //init finished
+	pr_info("mylab1_joystick: driver initialized\n");
+	return 0;
+}
+
+/**
+ * This function is called when the module is unloaded.
+ */
+static void __exit mylab1_joystick_dev_exit(void) {
+	// TODO
+	// 1) Destroy the device
+    device_destroy(j_class,MKDEV(major, 0));
+	// 2) Destroy the class
+    class_destroy(j_class);
+	// 4) Unregister the device
+    unregister_chrdev(major,"mylab1_joystick");
+	// 5) Free the IRQs
+    free_irq(irqNbr_UP, (void*)JOYSTICK_UP);
+    free_irq(irqNbr_DOWN, (void*)JOYSTICK_DOWN);
+    free_irq(irqNbr_LEFT, (void*)JOYSTICK_LEFT);
+    free_irq(irqNbr_RIGHT, (void*)JOYSTICK_RIGHT);
+    free_irq(irqNbr_BUTTON, (void*)JOYSTICK_BUTTON);
+	// 6) Free the GPIOs
+    gpio_free(JOYSTICK_UP);
+    gpio_free(JOYSTICK_DOWN);
+    gpio_free(JOYSTICK_LEFT);
+    gpio_free(JOYSTICK_RIGHT);
+    gpio_free(JOYSTICK_BUTTON);
+	pr_info("mylab1_joystick: driver destroyed\n");
+}
+
+/**
+ * Open operation
+ */
+static int dev_open(struct inode *inod, struct file *f) {
+	pr_info("mylab1_joystick: device opened\n");
+	return 0;
+}
+
+module_init(mylab1_joystick_dev_init);
+module_exit(mylab1_joystick_dev_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("defenestration en cours <maxime.rohmer@hesge.ch>");
+MODULE_DESCRIPTION("Module to drive the joystick on the myLab1 card");
+MODULE_VERSION("0.1");

skeletton.c

@@ -0,0 +1,93 @@
+#include <linux/module.h>
+#include <linux/device.h>
+#include <linux/fs.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/interrupt.h>
+#include <linux/gpio.h>
+
+// Operation prototypes
+static int dev_open(struct inode *, struct file *);
+
+int major;
+struct class *j_class;
+struct device *j_device;
+
+// The driver's file operations
+static const struct file_operations fops = {
+	.owner = THIS_MODULE,
+	.open = dev_open
+};
+
+/**
+ * Driver initialization code. 
+ */
+static int __init mylab1_joystick_dev_init(void) {
+	// TODO
+	// 1) Register the device by dynamically obtaining a major number
+    major = register_chrdev(0, "mylab1_joystick", &fops);
+    if(major < 0){
+        pr_info("mylab1_joystick: could not get a major number, initialisation failed\n");
+        return -1;
+    }
+	// 2) Create the class
+    j_class = class_create("mylab1_joystick");
+    if (IS_ERR(j_class)){
+        pr_info("mylab1_joystick: could not create class, initialisation failed\n");
+        return -1;
+    }
+    // 3) Create the device in /dev
+    j_device = device_create(j_class, NULL, MKDEV(major, 0), NULL, "mylab1_joystick");
+    if (IS_ERR(j_device)){
+        pr_info("mylab1_joystick: could not create device, initialisation failed\n");
+        return -1;
+    }
+	// 6) Request the necessary GPIOs
+	// 7) Register an IRQ handler per GPIO
+	pr_info("mylab1_joystick: driver initialized\n");
+	return 0;
+}
+
+/**
+ * This function is called when the module is unloaded.
+ */
+static void __exit mylab1_joystick_dev_exit(void) {
+	// TODO
+	// 1) Destroy the device
+    device_destroy(j_class,MKDEV(major, 0));
+	// 2) Destroy the class
+    class_destroy(j_class);
+	// 4) Unregister the device
+    unregister_chrdev(major,"mylab1_joystick");
+	// 5) Free the IRQs
+	// 6) Free the GPIOs
+	pr_info("mylab1_joystick: driver destroyed\n");
+}
+
+/**
+ * Open operation
+ */
+static int dev_open(struct inode *inod, struct file *f) {
+	pr_info("mylab1_joystick: device opened\n");
+	return 0;
+}
+
+/**
+ * Joystick left IRQ handler
+ */
+/*
+static irqreturn_t mylab_left_irq_handler(int irq, void *dev_id) {
+	// TODO
+	// - Operations to be done when the left position of the joystick is triggered
+    // - At minimum, the joystick state must be updated
+	return (irqreturn_t) IRQ_HANDLED;  // Announce that the IRQ has been handled correctly
+}
+*/
+
+module_init(mylab1_joystick_dev_init);
+module_exit(mylab1_joystick_dev_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Jaime Coder <maxime.rohmer@hesge.ch>");
+MODULE_DESCRIPTION("Module to drive the joystick on the myLab1 card");
+MODULE_VERSION("0.1");

skeletton_gpio.c

@@ -0,0 +1,174 @@
+#include <linux/module.h>
+#include <linux/device.h>
+#include <linux/fs.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/interrupt.h>
+#include <linux/gpio.h>
+
+const int JOYSTICK_UP = 16;     //GPIO0
+const int JOYSTICK_DOWN = 17;   //GPIO0
+const int JOYSTICK_LEFT = 21;   //GPIO0
+const int JOYSTICK_RIGHT = 27 + 32;  //GPIO1 offset of 32 on GPIO 1
+const int JOYSTICK_BUTTON = 23; //GPIO0
+
+#define IRQ_NAME "myjoystick_irq"
+int irqNbr_UP,irqNbr_DOWN,irqNbr_LEFT,irqNbr_RIGHT,irqNbr_BUTTON = 0;
+
+// Operation prototypes
+static int dev_open(struct inode *, struct file *);
+
+int major;
+struct class *j_class;
+struct device *j_device;
+
+// The driver's file operations
+static const struct file_operations fops = {
+	.owner = THIS_MODULE,
+	.open = dev_open
+};
+
+/*
+ * Joystick IRQ handler
+ */
+static irqreturn_t mylab_irq_handler(int irq, void *dev_id) {
+    int gpio = (int)dev_id; // GPIO number passed as dev_id
+    int value = gpio_get_value(gpio); // Get the current GPIO value
+    if (value == 1) {
+        pr_info("GPIO %d: Rising edge detected\n", gpio);
+    } else {
+        pr_info("GPIO %d: Falling edge detected\n", gpio);
+    }
+	return (irqreturn_t) IRQ_HANDLED;  // Announce that the IRQ has been handled correctly
+}
+
+/**
+ * Driver initialization code. 
+ */
+static int __init mylab1_joystick_dev_init(void) {
+	// TODO
+	// 1) Register the device by dynamically obtaining a major number
+    major = register_chrdev(0, "mylab1_joystick", &fops);
+    if(major < 0){
+        pr_info("mylab1_joystick: could not get a major number, initialisation failed\n");
+        return -1;
+    }
+	// 2) Create the class
+    j_class = class_create("mylab1_joystick");
+    if (IS_ERR(j_class)){
+        pr_info("mylab1_joystick: could not create class, initialisation failed\n");
+        return -1;
+    }
+    // 3) Create the device in /dev
+    j_device = device_create(j_class, NULL, MKDEV(major, 0), NULL, "mylab1_joystick");
+    if (IS_ERR(j_device)){
+        pr_info("mylab1_joystick: could not create device, initialisation failed\n");
+        return -1;
+    }
+	// 6) Request the necessary GPIOs
+    int err = 0;
+    err = gpio_request_one(JOYSTICK_UP,GPIOF_DIR_IN,"UP");
+    if(err != 0)
+        pr_info("mylab1_joystick: Could not request GPIO %d\n",JOYSTICK_UP);
+    err = gpio_request_one(JOYSTICK_DOWN,GPIOF_DIR_IN,"DOWN");
+    if(err != 0)
+        pr_info("mylab1_joystick: Could not request GPIO %d\n",JOYSTICK_DOWN);
+    err = gpio_request_one(JOYSTICK_LEFT,GPIOF_DIR_IN,"UP");
+    if(err != 0)
+        pr_info("mylab1_joystick: Could not request GPIO %d\n",JOYSTICK_LEFT);
+    err = gpio_request_one(JOYSTICK_RIGHT,GPIOF_DIR_IN,"UP");
+    if(err != 0)
+        pr_info("mylab1_joystick: Could not request GPIO %d\n",JOYSTICK_RIGHT);
+    err = gpio_request_one(JOYSTICK_BUTTON,GPIOF_DIR_IN,"UP");
+    if(err != 0)
+        pr_info("mylab1_joystick: Could not request GPIO %d\n",JOYSTICK_BUTTON);
+	// 7) Register an IRQ handler per GPIO
+    int irqres = 0;
+
+    // JOYSTICK UP
+    irqNbr_UP = gpio_to_irq(JOYSTICK_UP);
+    if(irqNbr_UP < 0)
+        pr_info("mylab1_joystick: Could not request IRQ number on GPIO : %d\n",JOYSTICK_UP);
+
+    irqres = request_irq(irqNbr_UP, mylab_irq_handler, IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, IRQ_NAME, (void*)JOYSTICK_UP);
+    if(irqres < 0)
+        pr_info("mylab1_joystick: Could not request IRQ on GPIO : %d\n",JOYSTICK_UP);
+    //JOYSTICK DOWN
+    irqNbr_DOWN = gpio_to_irq(JOYSTICK_DOWN);
+    if(irqNbr_DOWN < 0)
+        pr_info("mylab1_joystick: Could not request IRQ number on GPIO : %d\n",JOYSTICK_DOWN);
+
+    irqres = request_irq(irqNbr_DOWN, mylab_irq_handler, IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, IRQ_NAME, (void*)JOYSTICK_DOWN);
+    if(irqres < 0)
+        pr_info("mylab1_joystick: Could not request IRQ on GPIO : %d\n",JOYSTICK_DOWN);
+    // JOYSTICK LEFT
+    irqNbr_LEFT = gpio_to_irq(JOYSTICK_LEFT);
+    if(irqNbr_LEFT < 0)
+        pr_info("mylab1_joystick: Could not request IRQ number on GPIO : %d\n",JOYSTICK_LEFT);
+
+    irqres = request_irq(irqNbr_LEFT, mylab_irq_handler, IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, IRQ_NAME, (void*)JOYSTICK_LEFT);
+    if(irqres < 0)
+        pr_info("mylab1_joystick: Could not request IRQ on GPIO : %d\n",JOYSTICK_LEFT);
+    // JOYSTICK RIGHT
+    irqNbr_RIGHT = gpio_to_irq(JOYSTICK_RIGHT);
+    if(irqNbr_RIGHT < 0)
+        pr_info("mylab1_joystick: Could not request IRQ number on GPIO : %d\n",JOYSTICK_RIGHT);
+
+    irqres = request_irq(irqNbr_RIGHT, mylab_irq_handler, IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, IRQ_NAME, (void*)JOYSTICK_RIGHT);
+    if(irqres < 0)
+        pr_info("mylab1_joystick: Could not request IRQ on GPIO : %d\n",JOYSTICK_RIGHT);
+    // JOYSTICK BUTTON
+    irqNbr_BUTTON = gpio_to_irq(JOYSTICK_BUTTON);
+    if(irqNbr_BUTTON < 0)
+        pr_info("mylab1_joystick: Could not request IRQ number on GPIO : %d\n",JOYSTICK_BUTTON);
+
+    irqres = request_irq(irqNbr_BUTTON, mylab_irq_handler, IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, IRQ_NAME, (void*)JOYSTICK_BUTTON);
+    if(irqres < 0)
+        pr_info("mylab1_joystick: Could not request IRQ on GPIO : %d\n",JOYSTICK_BUTTON);
+
+    //init finished
+	pr_info("mylab1_joystick: driver initialized\n");
+	return 0;
+}
+
+/**
+ * This function is called when the module is unloaded.
+ */
+static void __exit mylab1_joystick_dev_exit(void) {
+	// TODO
+	// 1) Destroy the device
+    device_destroy(j_class,MKDEV(major, 0));
+	// 2) Destroy the class
+    class_destroy(j_class);
+	// 4) Unregister the device
+    unregister_chrdev(major,"mylab1_joystick");
+	// 5) Free the IRQs
+    free_irq(irqNbr_UP, (void*)JOYSTICK_UP);
+    free_irq(irqNbr_DOWN, (void*)JOYSTICK_DOWN);
+    free_irq(irqNbr_LEFT, (void*)JOYSTICK_LEFT);
+    free_irq(irqNbr_RIGHT, (void*)JOYSTICK_RIGHT);
+    free_irq(irqNbr_BUTTON, (void*)JOYSTICK_BUTTON);
+	// 6) Free the GPIOs
+    gpio_free(JOYSTICK_UP);
+    gpio_free(JOYSTICK_DOWN);
+    gpio_free(JOYSTICK_LEFT);
+    gpio_free(JOYSTICK_RIGHT);
+    gpio_free(JOYSTICK_BUTTON);
+	pr_info("mylab1_joystick: driver destroyed\n");
+}
+
+/**
+ * Open operation
+ */
+static int dev_open(struct inode *inod, struct file *f) {
+	pr_info("mylab1_joystick: device opened\n");
+	return 0;
+}
+
+module_init(mylab1_joystick_dev_init);
+module_exit(mylab1_joystick_dev_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("defenestration en cours <maxime.rohmer@hesge.ch>");
+MODULE_DESCRIPTION("Module to drive the joystick on the myLab1 card");
+MODULE_VERSION("0.1");

tp7.md

@@ -0,0 +1,14 @@
+# Travail Pratique 7
+
+## Objectif
+
+Actuellement notre système embarqué a un kernel linux en flash mais e système de fichier est un système ntfs qui est monté depuis notre machine de developement.
+
+Le but de ce tp est de changer ca et permettre à notre système embarqué d'être indépendant en mettant à disposition une carte SD avec les différents systèmes de fichiers avec lequel le kernel pourra interragir et on pourra donc utiliser notre système embarqué sans qu'il soit branché en ethernet sur notre machine de dev.
+
+Le but est également d'utiliser différents systèmes de fichiers qui sont faits pour de la flash et qui seront soit plus rapides soit plus conservateurs sur la durée de vie de la flash ou les deux.
+
+## Noyau : support des systèmes de fichiers
+
+### [Q1] Depuis le shell de votre système embarqué, comment pouvez-vous vous assurez que votre noyau est capable de gérer les systèmes de fichiers ci-dessus ?
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