[Core] Change OLED task function to be boolean (#14864)

* [Core] Add kb level callbacks to OLED driver

* Update keyboards and keymaps

* Update docs

* Update userspace configs

* Add fix for my keymap ...

* update lefty

1 files changed, 3 insertions, 1 deletions

diff --git a/keyboards/tkc/tkc1800/keymaps/default/keymap.c b/keyboards/tkc/tkc1800/keymaps/default/keymap.c
index 762d5c4ed..29a19e680 100644
--- a/keyboards/tkc/tkc1800/keymaps/default/keymap.c
+++ b/keyboards/tkc/tkc1800/keymaps/default/keymap.c
@@ -80,7 +80,7 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
 
 
 #ifdef OLED_ENABLE
-void oled_task_user(void) {
+bool oled_task_user(void) {
     oled_write_P(PSTR("TKC1800\n"),false);
         // Host Keyboard Layer Status
     oled_write_P(PSTR("Layer: "), false);
@@ -102,5 +102,7 @@ void oled_task_user(void) {
     oled_write_P(led_state.num_lock ? PSTR("NUM ") : PSTR("    "), false);
     oled_write_P(led_state.caps_lock ? PSTR("CAP ") : PSTR("    "), false);
     oled_write_P(led_state.scroll_lock ? PSTR("SCR ") : PSTR("    "), false);
+
+    return false;
 }
 #endif