Added keyboard support

vinsdragonis · Feb 20, 2022 · 10bc7e5 · 10bc7e5
1 parent d58886a
commit 10bc7e5
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Showing 8 changed files with 380 additions and 7 deletions.
diff --git a/boot/bin/boot.bin b/boot/bin/boot.bin
diff --git a/boot/bin/kernel.bin b/boot/bin/kernel.bin
diff --git a/boot/bin/kernel.img b/boot/bin/kernel.img
diff --git a/boot/bin/kernel.o b/boot/bin/kernel.o
diff --git a/boot/boot.asm b/boot/boot.asm
@@ -64,7 +64,7 @@ section code
 
     mov bx, 0x1000 ; location of the code being loaded from the hard disk
     mov ah, 0x02
-    mov al, 25 ; number of sectors to read from the hard disk
+    mov al, 31 ; number of sectors to read from the hard disk
     mov ch, 0x00
     mov dh, 0x00
     mov cl, 0x02

diff --git a/boot/input.c b/boot/input.c
@@ -5,6 +5,11 @@ int left_clicked, right_clicked, middle_clicked;
 int current_byte = 0;
 uint8_t bytes[4] = {0};
 
+int Scancode = -1;
+
+#define TRUE 1
+#define FALSE 0
+
 #define pic1_command 0x20
 #define pic1_data 0x21
 #define pic2_command 0xa0
@@ -98,11 +103,11 @@ void RemapPIC() {
 }
 
 void HandleISR1() {
-    inportb(0x60);
+    Scancode = inportb(0x60);
     outportb(0xa0, 0x20);
     outportb(0x20, 0x20);
 
-    clearScreen(0, 0, 255);
+    // clearScreen(0, 0, 0);
 }
 
 void HandleMouseInterrupt();
@@ -202,7 +207,7 @@ void HandleMousePacket() {
     uint8_t status = bytes[0];
     int32_t change_x = (int32_t) bytes[1];
     int32_t change_y = (int32_t)bytes[2];
-    int mouse_speed = 3;
+    int mouse_speed = 2;
 
     if (status & x_overflow || status & y_overflow)
         return;
@@ -237,3 +242,349 @@ void HandleMousePacket() {
     else if (y > VBE->y_resolution)
         y = VBE->y_resolution;
 }
+
+int shift_pressed = FALSE;
+int caps_pressed = FALSE;
+int escape_pressed = FALSE;
+int backspace_pressed = FALSE;
+int alt_pressed = FALSE;
+int ctrl_pressed = FALSE;
+int enter_pressed = FALSE;
+
+unsigned char ProcessScancode(int scancode)
+{
+    if (scancode == 0x01)
+        escape_pressed = TRUE;
+
+    else if (scancode == 0x02)
+        if (shift_pressed == TRUE)
+            return '!';
+        else
+            return '1';
+
+    else if (scancode == 0x03)
+        if (shift_pressed == TRUE)
+            return '"';
+        else
+            return '2';
+
+    else if (scancode == 0x04)
+        if (shift_pressed == TRUE)
+            return '#';
+        else
+            return '3';
+
+    else if (scancode == 0x05)
+        if (shift_pressed == TRUE)
+            return '$';
+        else
+            return '4';
+
+    else if (scancode == 0x06)
+        if (shift_pressed == TRUE)
+            return '%';
+        else
+            return '5';
+
+    else if (scancode == 0x07)
+        if (shift_pressed == TRUE)
+            return '^';
+        else
+            return '6';
+
+    else if (scancode == 0x08)
+        if (shift_pressed == TRUE)
+            return '&';
+        else
+            return '7';
+
+    else if (scancode == 0x09)
+        if (shift_pressed == TRUE)
+            return '*';
+        else
+            return '8';
+
+    else if (scancode == 0x0A)
+        if (shift_pressed == TRUE)
+            return '(';
+        else
+            return '9';
+
+    else if (scancode == 0x0B)
+        if (shift_pressed == TRUE)
+            return ')';
+        else
+            return '0';
+
+    else if (scancode == 0x0C)
+        if (shift_pressed == TRUE)
+            return '_';
+        else
+            return '-';
+
+    else if (scancode == 0x0D)
+        if (shift_pressed == TRUE)
+            return '+';
+        else
+            return '=';
+
+    // Backspace
+    else if (scancode == 0x0E)
+        backspace_pressed = TRUE;
+
+    else if (scancode == 0x0F)
+        return '\t';
+
+    else if (scancode == 0x10)
+        if (shift_pressed == TRUE || caps_pressed == TRUE)
+            return 'Q';
+        else
+            return 'q';
+
+    else if (scancode == 0x11)
+        if (shift_pressed == TRUE || caps_pressed == TRUE)
+            return 'W';
+        else
+            return 'w';
+
+    else if (scancode == 0x12)
+        if (shift_pressed == TRUE || caps_pressed == TRUE)
+            return 'E';
+        else
+            return 'e';
+
+    else if (scancode == 0x13)
+        if (shift_pressed == TRUE || caps_pressed == TRUE)
+            return 'R';
+        else
+            return 'r';
+
+    else if (scancode == 0x14)
+        if (shift_pressed == TRUE || caps_pressed == TRUE)
+            return 'T';
+        else
+            return 't';
+
+    else if (scancode == 0x15)
+        if (shift_pressed == TRUE || caps_pressed == TRUE)
+            return 'Y';
+        else
+            return 'y';
+
+    else if (scancode == 0x16)
+        if (shift_pressed == TRUE || caps_pressed == TRUE)
+            return 'U';
+        else
+            return 'u';
+
+    else if (scancode == 0x17)
+        if (shift_pressed == TRUE || caps_pressed == TRUE)
+            return 'I';
+        else
+            return 'i';
+
+    else if (scancode == 0x18)
+        if (shift_pressed == TRUE || caps_pressed == TRUE)
+            return 'O';
+        else
+            return 'o';
+
+    else if (scancode == 0x19)
+        if (shift_pressed == TRUE || caps_pressed == TRUE)
+            return 'P';
+        else
+            return 'p';
+
+    else if (scancode == 0x1A)
+        if (shift_pressed == TRUE)
+            return '{';
+        else
+            return '[';
+
+    else if (scancode == 0x1B)
+        if (shift_pressed == TRUE)
+            return '}';
+        else
+            return ']';
+
+    // enter pressed
+    else if (scancode == 0x1C)
+    {
+        enter_pressed = TRUE;
+        return '\n';
+    }
+
+    // ctrl pressed
+    else if (scancode == 0x1D)
+        ctrl_pressed = TRUE;
+
+    else if (scancode == 0x1E)
+        if (shift_pressed == TRUE || caps_pressed == TRUE)
+            return 'A';
+        else
+            return 'a';
+
+    else if (scancode == 0x1F)
+        if (shift_pressed == TRUE || caps_pressed == TRUE)
+            return 'S';
+        else
+            return 's';
+
+    else if (scancode == 0x20)
+        if (shift_pressed == TRUE || caps_pressed == TRUE)
+            return 'D';
+        else
+            return 'd';
+
+    else if (scancode == 0x21)
+        if (shift_pressed == TRUE || caps_pressed == TRUE)
+            return 'F';
+        else
+            return 'f';
+
+    else if (scancode == 0x22)
+        if (shift_pressed == TRUE || caps_pressed == TRUE)
+            return 'G';
+        else
+            return 'g';
+
+    else if (scancode == 0x23)
+        if (shift_pressed == TRUE || caps_pressed == TRUE)
+            return 'H';
+        else
+            return 'h';
+
+    else if (scancode == 0x24)
+        if (shift_pressed == TRUE || caps_pressed == TRUE)
+            return 'J';
+        else
+            return 'j';
+
+    else if (scancode == 0x25)
+        if (shift_pressed == TRUE || caps_pressed == TRUE)
+            return 'K';
+        else
+            return 'k';
+
+    else if (scancode == 0x26)
+        if (shift_pressed == TRUE || caps_pressed == TRUE)
+            return 'L';
+        else
+            return 'l';
+
+    else if (scancode == 0x27)
+        if (shift_pressed == TRUE)
+            return ':';
+        else
+            return ';';
+
+    else if (scancode == 0x28)
+        if (shift_pressed == TRUE)
+            return '@';
+        else
+            return '\'';
+
+    else if (scancode == 0x29)
+        if (shift_pressed == TRUE)
+            return '~';
+        else
+            return '`';
+
+    // shift pressed
+    else if (scancode == 0x2A)
+        shift_pressed = TRUE;
+
+    else if (scancode == 0x2B)
+        if (shift_pressed == TRUE)
+            return '|';
+        else
+            return '\\';
+
+    else if (scancode == 0x2C)
+        if (shift_pressed == TRUE || caps_pressed == TRUE)
+            return 'Z';
+        else
+            return 'z';
+
+    else if (scancode == 0x2D)
+        if (shift_pressed == TRUE || caps_pressed == TRUE)
+            return 'X';
+        else
+            return 'x';
+
+    else if (scancode == 0x2E)
+        if (shift_pressed == TRUE || caps_pressed == TRUE)
+            return 'C';
+        else
+            return 'c';
+
+    else if (scancode == 0x2F)
+        if (shift_pressed == TRUE || caps_pressed == TRUE)
+            return 'V';
+        else
+            return 'v';
+
+    else if (scancode == 0x30)
+        if (shift_pressed == TRUE || caps_pressed == TRUE)
+            return 'B';
+        else
+            return 'b';
+
+    else if (scancode == 0x31)
+        if (shift_pressed == TRUE || caps_pressed == TRUE)
+            return 'N';
+        else
+            return 'n';
+
+    else if (scancode == 0x32)
+        if (shift_pressed == TRUE || caps_pressed == TRUE)
+            return 'M';
+        else
+            return 'm';
+
+    else if (scancode == 0x33)
+        if (shift_pressed == TRUE)
+            return '<';
+        else
+            return ',';
+
+    else if (scancode == 0x34)
+        if (shift_pressed == TRUE)
+            return '>';
+        else
+            return '.';
+
+    else if (scancode == 0x35)
+        if (shift_pressed == TRUE)
+            return '?';
+        else
+            return '/';
+
+    // shift pressed
+    else if (scancode == 0x36)
+        shift_pressed = TRUE;
+
+    // alt pressed
+    else if (scancode == 0x38)
+        alt_pressed = TRUE;
+
+    else if (scancode == 0x39)
+        return ' ';
+
+    // Caps pressed
+    else if (scancode == 0x3A)
+        if (caps_pressed == TRUE)
+            caps_pressed = FALSE;
+        else if (caps_pressed == FALSE)
+            caps_pressed = TRUE;
+
+    // shift released
+    if (scancode == 0xAA)
+        shift_pressed = FALSE;
+
+    // shift released
+    if (scancode == 0xB6)
+        shift_pressed = FALSE;
+
+    return '\0';
+}