merge ui.c & ui_sdl2.c; ui communicate with emulator through functions defined in emulator.h

Makefile

@@ -7,7 +7,6 @@ PKG_CONFIG ?= pkg-config
 MAKEFLAGS +=-j$(NUM_CORES) -l$(NUM_CORES)
 
 DOTOS = src/ui.o \
-	src/ui_sdl2.o \
 	src/config.o \
 	src/emulator.o \
 	src/main.o

src/emulator.c

@@ -1,6 +1,11 @@
 #include "emulator.h"
 
-hpkey_t keyboard[ 49 ] = {
+typedef struct hpkey_t {
+    int code;
+    bool pressed;
+} hpkey_t;
+
+static hpkey_t keyboard[ 49 ] = {
     /* From top left to bottom right */
     {0x14,   0},
     {0x84,   0},
@@ -61,7 +66,46 @@ hpkey_t keyboard[ 49 ] = {
     {0x00,   0},
 };
 
-saturn_t saturn;
+static int contrast = 10;
-display_t display;
 
-int annunciators_bits[ NB_ANNUNCIATORS ] = { ANN_LEFT, ANN_RIGHT, ANN_ALPHA, ANN_BATTERY, ANN_BUSY, ANN_IO };
+void press_key( int hpkey )
+{
+    // Check not already pressed (may be important: avoids a useless do_kbd_int)
+    if ( keyboard[ hpkey ].pressed )
+        return;
+
+    keyboard[ hpkey ].pressed = true;
+}
+
+void release_key( int hpkey )
+{
+    // Check not already released (not critical)
+    if ( !keyboard[ hpkey ].pressed )
+        return;
+
+    keyboard[ hpkey ].pressed = false;
+}
+
+bool is_key_pressed( int hpkey ) { return keyboard[ hpkey ].pressed; }
+
+unsigned char get_annunciators( void ) { return 255; }
+
+bool get_display_state( void ) { return true; }
+
+void get_lcd_buffer( int* target )
+{
+    for ( int i = 0; i < ( LCD_WIDTH * LCD_HEIGHT ); ++i )
+        target[ i ] = i % 2;
+}
+
+int get_contrast( void ) { return contrast; }
+
+void init_emulator( void )
+{
+    // nop;
+}
+
+void exit_emulator( void )
+{
+    // nop;
+}

src/emulator.h

@@ -78,41 +78,20 @@
 #define ANN_BUSY 0x90
 #define ANN_IO 0xa0
 
+// LCD
 #define NIBBLES_PER_ROW 34
+#define LCD_WIDTH 131
+#define LCD_HEIGHT 64
 
-typedef unsigned char word_4;
+void press_key( int hpkey );
-typedef unsigned char word_8;
+void release_key( int hpkey );
-typedef long word_20;
+bool is_key_pressed( int hpkey );
 
-typedef struct hpkey_t {
+void init_emulator( void );
-    int code;
+void exit_emulator( void );
-    bool pressed;
-} hpkey_t;
-
-typedef struct display_t {
-    int on;
-
-    long disp_start;
-    long disp_end;
-
-    int offset;
-    int lines;
-    int nibs_per_line;
-
-    int contrast;
-
-    long menu_start;
-    long menu_end;
-} display_t;
-
-typedef struct saturn_t {
-    word_8 annunc;
-} saturn_t;
-
-extern hpkey_t keyboard[ 49 ];
-extern saturn_t saturn;
-extern display_t display;
-
-extern int annunciators_bits[ NB_ANNUNCIATORS ];
 
+unsigned char get_annunciators( void );
+bool get_display_state( void );
+void get_lcd_buffer( int* target );
+int get_contrast( void );
 #endif /* !_EMULATOR_H */

src/main.c

@@ -1,13 +1,14 @@
 #include <stdbool.h>
 
+#include "emulator.h"
 #include "ui.h"
 
 int main( int argc, char** argv )
 {
-    // start_emulator();
+    init_emulator();
 
     /* (G)UI */
-    start_UI( config_init( argc, argv ) );
+    ui_start( config_init( argc, argv ) );
 
     while ( true ) {
         ui_update_LCD();

src/ui.h

@@ -4,49 +4,19 @@
 #include "config.h"
 #include "emulator.h"
 
-#define DISP_ROWS 64
-#define NIBS_PER_BUFFER_ROW ( NIBBLES_PER_ROW + 2 )
-
-/*************/
-/* variables */
-/*************/
-extern int last_annunc_state;
-
-extern unsigned char lcd_nibbles_buffer[ DISP_ROWS ][ NIBS_PER_BUFFER_ROW ];
-
-/*************/
-/* functions */
-/*************/
-extern void init_sdl2_ui( config_t* config );
-extern void sdl2_ui_stop( void );
-
 /*************************************************/
 /* public API: if it's there it's used elsewhere */
 /*************************************************/
-/*************************/
+extern void ui_get_event( void );
-/* used in: emu_memory.c */
+extern void ui_adjust_contrast( void );
-/*************************/
-extern void ( *ui_disp_draw_nibble )( word_20 addr, word_4 val );
-extern void ( *ui_menu_draw_nibble )( word_20 addr, word_4 val );
 
-/*****************************************/
+extern void ui_update_LCD( void );
-/* used in: emu_emulate.c */
-/*****************************************/
-extern void ( *ui_get_event )( void );
-extern void ( *ui_adjust_contrast )( void );
-extern void ( *ui_draw_annunc )( void );
-
-/*****************************************************/
-/* used in: emu_emulate.c, debugger.c */
-/*****************************************************/
-extern void ( *ui_update_LCD )( void );
-extern void ( *ui_refresh_LCD )( void );
 
 /*******************/
 /* used in: main.c */
 /*******************/
 extern void ui_stop( void );
-extern void start_UI( config_t* config );
+extern void ui_start( config_t* config );
 
 extern void close_and_exit( void );
 

src/ui_inner.h

@@ -99,6 +99,5 @@ extern ann_struct_t ann_tbl[ NB_ANNUNCIATORS ];
 /*************/
 extern int SmallTextWidth( const char* string, unsigned int length );
 extern int BigTextWidth( const char* string, unsigned int length );
-extern void ui_init_LCD( void );
 
 #endif /* _UI_INNER_H */