[Keymap] Display logo for caps lock indication on crkbd using old OLED driver (#7535)

* Display logo for caps lock indication on crkbd using old OLED driver

* Add emacs read-only mode file variable to generated files

* use LTO_ENABLE instead of EXTRAFLAGS

This enables the same option, and disables action_macros, and action_functions, both of which seem to break when LTO is enabled. And this is a lot simpler to use.

Co-Authored-By: Drashna Jaelre <drashna@live.com>

3 files changed, 47 insertions, 6 deletions

diff --git a/keyboards/crkbd/keymaps/manna-harbour_miryoku/config.h b/keyboards/crkbd/keymaps/manna-harbour_miryoku/config.h
index 4b8f78a650..e2fe1824da 100644
--- a/keyboards/crkbd/keymaps/manna-harbour_miryoku/config.h
+++ b/keyboards/crkbd/keymaps/manna-harbour_miryoku/config.h
@@ -1,5 +1,4 @@
-
-// generated from users/manna-harbour_miryoku/miryoku.org
+// generated from users/manna-harbour_miryoku/miryoku.org  -*- buffer-read-only: t -*-
 
 #pragma once
 
@@ -15,3 +14,5 @@
 #define RGB_MATRIX_VAL_STEP 8
 #define RGB_MATRIX_SPD_STEP 10
 #endif
+
+#define SSD1306OLED // old oled driver
diff --git a/keyboards/crkbd/keymaps/manna-harbour_miryoku/keymap.c b/keyboards/crkbd/keymaps/manna-harbour_miryoku/keymap.c
index 56d4de25ac..f5be6844f8 100644
--- a/keyboards/crkbd/keymaps/manna-harbour_miryoku/keymap.c
+++ b/keyboards/crkbd/keymaps/manna-harbour_miryoku/keymap.c
@@ -1,5 +1,4 @@
-
-// generated from users/manna-harbour_miryoku/miryoku.org
+// generated from users/manna-harbour_miryoku/miryoku.org  -*- buffer-read-only: t -*-
 
 #define LAYOUT_miryoku( \
        K00,   K01,   K02,   K03,   K04,   K05,   K06,   K07,   K08,   K09, \
@@ -15,3 +14,41 @@ KC_NO, K20,   K21,   K22,   K23,   K24,   K25,   K26,   K27,   K28,   K29,   KC_
 )
 
 #include "manna-harbour_miryoku.c"
+
+
+#ifdef SSD1306OLED
+
+#include "ssd1306.h"
+
+void matrix_init_user(void) {
+  iota_gfx_init(!has_usb());   // turns on the display
+}
+
+// When add source files to SRC in rules.mk, you can use functions.
+const char *read_logo(void);
+
+void matrix_scan_user(void) {
+   iota_gfx_task();
+}
+
+void matrix_render_user(struct CharacterMatrix *matrix) {
+  if (host_keyboard_leds() & (1<<USB_LED_CAPS_LOCK)) {
+    matrix_write(matrix, read_logo());
+  }
+}
+
+void matrix_update(struct CharacterMatrix *dest, const struct CharacterMatrix *source) {
+  if (memcmp(dest->display, source->display, sizeof(dest->display))) {
+    memcpy(dest->display, source->display, sizeof(dest->display));
+    dest->dirty = true;
+  }
+}
+
+void iota_gfx_task_user(void) {
+  struct CharacterMatrix matrix;
+  matrix_clear(&matrix);
+  matrix_render_user(&matrix);
+  matrix_update(&display, &matrix);
+}
+
+#endif //SSD1306OLED
diff --git a/keyboards/crkbd/keymaps/manna-harbour_miryoku/rules.mk b/keyboards/crkbd/keymaps/manna-harbour_miryoku/rules.mk
index f62c86e932..c4fb15f342 100644
--- a/keyboards/crkbd/keymaps/manna-harbour_miryoku/rules.mk
+++ b/keyboards/crkbd/keymaps/manna-harbour_miryoku/rules.mk
@@ -1,4 +1,7 @@
-
-# generated from users/manna-harbour_miryoku/miryoku.org
+# generated from users/manna-harbour_miryoku/miryoku.org  -*- buffer-read-only: t -*-
 
 RGB_MATRIX_ENABLE = WS2812
+
+# old oled driver
+SRC += ./lib/glcdfont.c \
+       ./lib/logo_reader.c