reform

commit d0bc0555bfb9237861374abd0329316b9958d5ce
parent 865f0292f038e5d9742822d8e3f269d344ee34ba
Author: René Wagner <rwa@clttr.info>
Date:   Mon, 18 Dec 2023 21:07:39 +0100

show currently pressed key modifiers in OLED display

applies to: shift, ctrl, super, alt, alt-gr
Up to 4 modifiers are shown each on its own row.

Diffstat:
M
reform2-keyboard-fw/keyboard.c
 | 
48
++++++++++++++++++++++++++++++++++++++++++++++--
M
reform2-keyboard-fw/menu.c
 | 
23
+++++++++++++++++++++++

2 files changed, 69 insertions(+), 2 deletions(-)
diff --git a/reform2-keyboard-fw/keyboard.c b/reform2-keyboard-fw/keyboard.c
@@ -80,6 +80,14 @@ USB_ClassInfo_HID_Device_t MediaControl_HID_Interface =
       },
   };
 
+enum keymods {
+    SHIFT = 1,
+  CONTROL = 2,
+    AGR = 4,
+    ALT = 8,
+  SUPER = 16,
+};
+
 uint8_t matrix_debounce[KBD_COLS*KBD_ROWS];
 uint8_t matrix_state[KBD_COLS*KBD_ROWS];
 
@@ -87,6 +95,7 @@ int active_meta_mode = 0;
 uint8_t last_meta_key = 0;
 
 uint8_t* active_matrix = matrix;
+int active_keymods = 0;
 bool media_toggle = 0;
 bool fn_key = 0; // Am I holding FN?
 bool circle = 0; // Am I holding circle?
@@ -145,6 +154,9 @@ int process_keyboard(uint8_t* resulting_scancodes) {
   // 8 -> 0b11111111
   uint8_t debounce_bitmask = (1<<DEBOUNCE_BITS)-1;
 
+  int old_keymods = active_keymods;
+  bool left_ctrl_pressed = 1;
+  bool left_shift_pressed = 1;
   // pull ROWs low one after the other
   for (int y = 0; y < KBD_ROWS; y++) {
     switch (y) {
@@ -201,7 +213,18 @@ int process_keyboard(uint8_t* resulting_scancodes) {
 
       if (debounced_pressed) {
         total_pressed++;
-
+        // set active keymod for OLED display
+        if (keycode == HID_KEYBOARD_SC_LEFT_CONTROL || keycode == HID_KEYBOARD_SC_RIGHT_CONTROL) {
+          active_keymods |= CONTROL;
+        } else if (keycode == HID_KEYBOARD_SC_LEFT_SHIFT || keycode == HID_KEYBOARD_SC_RIGHT_SHIFT) {
+          active_keymods |= SHIFT;
+        } else if (keycode == HID_KEYBOARD_SC_RIGHT_ALT) {
+          active_keymods |= AGR;
+        } else if (keycode == HID_KEYBOARD_SC_LEFT_ALT) {
+          active_keymods |= ALT;
+        } else if (keycode == HID_KEYBOARD_SC_LEFT_GUI) {
+          active_keymods |= SUPER;
+        }
         // Is circle key pressed?
         if (keycode == KEY_CIRCLE) {
           if (fn_key) {
@@ -271,6 +294,22 @@ int process_keyboard(uint8_t* resulting_scancodes) {
             }
           }
           circle = 0;
+        } 
+        // disable active keymod for OLED display
+        if (keycode == HID_KEYBOARD_SC_LEFT_CONTROL) {
+          left_ctrl_pressed = 0;
+        } else if (keycode == HID_KEYBOARD_SC_LEFT_SHIFT) {
+          left_shift_pressed = 0;
+        } else if (!left_ctrl_pressed && keycode == HID_KEYBOARD_SC_RIGHT_CONTROL) {
+          active_keymods &= ~ CONTROL;
+        } else if (!left_shift_pressed && keycode == HID_KEYBOARD_SC_RIGHT_SHIFT) {
+          active_keymods &= ~ SHIFT;
+        } else if (keycode == HID_KEYBOARD_SC_RIGHT_ALT) {
+          active_keymods &= ~ AGR;
+        } else if (keycode == HID_KEYBOARD_SC_LEFT_ALT) {
+          active_keymods &= ~ ALT;
+        } else if (keycode == HID_KEYBOARD_SC_LEFT_GUI) {
+          active_keymods &= ~ SUPER;
         }
       }
     }
@@ -285,6 +324,10 @@ int process_keyboard(uint8_t* resulting_scancodes) {
     }
   }
 
+  if (old_keymods != active_keymods) {
+    //render_line(active_keymods);
+    render_keymods(active_keymods);
+  }
   // if no more keys are held down, allow a new meta command
   if (total_pressed<1) last_meta_key = 0;
 
@@ -401,7 +444,7 @@ void EVENT_USB_Device_ConfigurationChanged(void)
   bool ConfigSuccess = true;
 
   ConfigSuccess &= HID_Device_ConfigureEndpoints(&Keyboard_HID_Interface);
-	ConfigSuccess &= HID_Device_ConfigureEndpoints(&MediaControl_HID_Interface);
+  ConfigSuccess &= HID_Device_ConfigureEndpoints(&MediaControl_HID_Interface);
 
   USB_Device_EnableSOFEvents();
 }
@@ -483,3 +526,4 @@ void CALLBACK_HID_Device_ProcessHIDReport(USB_ClassInfo_HID_Device_t* const HIDI
 
   hid_report_cmd(data);
 }
+/* vim: set tabstop=2:softtabstop=2:shiftwidth=2:expandtab */
diff --git a/reform2-keyboard-fw/menu.c b/reform2-keyboard-fw/menu.c
@@ -18,6 +18,15 @@ int current_scroll_y = 0;
 int current_menu_page = 0;
 int8_t logo_timeout_ticks = 0;
 
+#define KEYMODS_NUM_ITEMS 5
+const MenuItem keymods_items[] = {
+  { "        SHIFT        ", KEY_ESCAPE },
+  { "        CNTRL        ", KEY_ESCAPE },
+  { "         AGR         ", KEY_ESCAPE },
+  { "         ALT         ", KEY_ESCAPE },
+  { "        SUPER        ", KEY_ESCAPE },
+};
+
 #define HYPER_HELP_NUM_ITEMS 4
 const MenuItem help_items[] = {
   { "Delete      Backspace", KEY_ESCAPE },
@@ -76,6 +85,19 @@ void render_menu(int y) {
   gfx_flush();
 }
 
+void render_keymods(int keymods) {
+  gfx_clear();
+  int line=0;
+  for (int i=0; i<KEYMODS_NUM_ITEMS; i++) {
+    if ((int)(pow(2, i)+0.5) & keymods) {
+      gfx_poke_str(0,line++,keymods_items[i].title);
+    }
+	if (line>3) break;
+  }
+  gfx_on();
+  gfx_flush();
+}
+
 void render_help() {
   gfx_clear();
   for (int i=0; i<HYPER_HELP_NUM_ITEMS; i++) {
@@ -266,3 +288,4 @@ void anim_goodbye(void) {
   }
   gfx_off();
 }
+/* vim: set tabstop=2:softtabstop=2:shiftwidth=2:expandtab */