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, 38 insertions, 4 deletions

diff --git a/keyboards/jj40/jj40.c b/keyboards/jj40/jj40.c
index 6044e83fdf..9c1775d6a1 100644
--- a/keyboards/jj40/jj40.c
+++ b/keyboards/jj40/jj40.c
@@ -1,5 +1,6 @@
 /*
 Copyright 2017 Luiz Ribeiro <luizribeiro@gmail.com>
+Modified 2018 Kenneth A. <github.com/krusli>
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
@@ -24,8 +25,34 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #include "i2c.h"
 
-// custom RGB driver
+#include "backlight.h"
+#include "backlight_custom.h"
+
 extern rgblight_config_t rgblight_config;
+
+// for keyboard subdirectory level init functions
+// @Override
+void matrix_init_kb(void) {
+  // call user level keymaps, if any
+  // matrix_init_user();
+}
+
+#ifdef BACKLIGHT_ENABLE
+/// Overrides functions in `quantum.c`
+void backlight_init_ports(void) {
+  b_led_init_ports();
+}
+
+void backlight_task(void) {
+  b_led_task();
+}
+
+void backlight_set(uint8_t level) {
+  b_led_set(level);
+}
+#endif
+
+// custom RGB driver
 void rgblight_set(void) {
   if (!rgblight_config.enable) {
     for (uint8_t i=0; i<RGBLED_NUM; i++) {
@@ -39,8 +66,15 @@ void rgblight_set(void) {
   i2c_send(0xb0, (uint8_t*)led, 3 * RGBLED_NUM);
 }
 
-__attribute__ ((weak))
+bool rgb_init = false;
 void matrix_scan_user(void) {
-    rgblight_task();
-    /* Nothing else for now. */
+  // if LEDs were previously on before poweroff, turn them back on
+  if (rgb_init == false && rgblight_config.enable) {
+    i2c_init();
+    i2c_send(0xb0, (uint8_t*)led, 3 * RGBLED_NUM);
+    rgb_init = true;
+  }
+
+  rgblight_task();
+  /* Nothing else for now. */
 }