Backlighting for JJ40 and underglow initialisation code (#2260)

* Cleanup Mechmini keymap. Once the custom RGB function is defined, there is no need to manually handle RGB code.

* Change default to KEYMAP_MIT, not KEYMAP_OFFSET

* Add custom RGB code for JJ40

* Reset Mechmini advertised power draw to 500. Will have to test actual maximum power draw later.

* RGB working on JJ40.

* Fix: saturation increase/decrease flipped

* Add new directory for my custom keymap with RGB keycodes

* Swap LAlt and LGUI

* Update JJ40 max power draw with measured value

* Update: fun40 rules.mk to enable underglow; earlier failed Travis CI

* Fix: init RGB LEDs on boot. Also added HHKB-like keymap for XD60.

* Super rudimentary backlight test, init RGB LEDs on boot

* Backlighting works - stays on for now

* Toggling working

* Now can override backlight.c functions. Problem was functions in backlight.c weren't called before due to a lack of matrix_scan_quantum() in matrix.c

* Timers not working

* Delete global.h

* Cleanup

* Compiles

* Good sign: LEDs stop working again

* Handle timer1 overflow

* Progress: fix: forgot to init

* Backlighting fully working now except breathing.

* Revert keymap to original keycodes

* Update XD60 keymap README

* Update JJ40 keymap with backlight toggles

* Breathing working just fine.

* Update references

* Add backlight_set() call

* Cleanup code to disable backlight

* Fix: does not compile

* Fix: missing call to rgblight_task.

* Testing with BACKLIGHT_BREATHING

* Cleanup

* Cleanup comments

* More commenting cleanup.

* Do not enable BACKLIGHT_BREATHING by default

1 files changed, 9 insertions, 3 deletions

diff --git a/quantum/quantum.c b/quantum/quantum.c
index 88617412c..65fa25961 100644
--- a/quantum/quantum.c
+++ b/quantum/quantum.c
@@ -138,13 +138,13 @@ void reset_keyboard(void) {
   clear_keyboard();
 #if defined(MIDI_ENABLE) && defined(MIDI_BASIC)
   process_midi_all_notes_off();
-#endif  
+#endif
 #if defined(AUDIO_ENABLE)
   music_all_notes_off();
   uint16_t timer_start = timer_read();
   PLAY_SONG(goodbye_song);
   shutdown_user();
-  while(timer_elapsed(timer_start) < 250) 
+  while(timer_elapsed(timer_start) < 250)
     wait_ms(1);
   stop_all_notes();
 #else
@@ -885,6 +885,7 @@ void backlight_set(uint8_t level) {}
 
 uint8_t backlight_tick = 0;
 
+#ifndef BACKLIGHT_CUSTOM_DRIVER
 void backlight_task(void) {
   if ((0xFFFF >> ((BACKLIGHT_LEVELS - get_backlight_level()) * ((BACKLIGHT_LEVELS + 1) / 2))) & (1 << backlight_tick)) {
     #if BACKLIGHT_ON_STATE == 0
@@ -905,9 +906,12 @@ void backlight_task(void) {
   }
   backlight_tick = backlight_tick + 1 % 16;
 }
+#endif
 
 #ifdef BACKLIGHT_BREATHING
-#error "Backlight breathing only available with hardware PWM. Please disable."
+  #ifndef BACKLIGHT_CUSTOM_DRIVER
+  #error "Backlight breathing only available with hardware PWM. Please disable."
+  #endif
 #endif
 
 #else // pwm through timer
@@ -935,6 +939,7 @@ static inline void set_pwm(uint16_t val) {
   OCR1x = val;
 }
 
+#ifndef BACKLIGHT_CUSTOM_DRIVER
 __attribute__ ((weak))
 void backlight_set(uint8_t level) {
   if (level > BACKLIGHT_LEVELS)
@@ -952,6 +957,7 @@ void backlight_set(uint8_t level) {
 }
 
 void backlight_task(void) {}
+#endif  // BACKLIGHT_CUSTOM_DRIVER
 
 #ifdef BACKLIGHT_BREATHING