[Keymap] Various enhancements for dshields user space and keymaps. (#6816)

- Add oneshot mod/layer unlocking
- Fix Planck rev 3 backlight breathing
- Fix Planck rev 6 build with arm gcc 9.2.0
- General code clean up

4 files changed, 43 insertions, 28 deletions

diff --git a/users/dshields/config.h b/users/dshields/config.h
index 743f16f99..17eb98bd4 100644
--- a/users/dshields/config.h
+++ b/users/dshields/config.h
@@ -5,6 +5,7 @@
 #define ONESHOT_TAP_TOGGLE        2
 #define ONESHOT_TIMEOUT           3000
 #define RETRO_TAPPING
+#define BACKLIGHT_BREATHING
 
 #define MOUSEKEY_INTERVAL         20
 #define MOUSEKEY_DELAY            0
diff --git a/users/dshields/dshields.c b/users/dshields/dshields.c
index 6aff5c671..bc88cae56 100644
--- a/users/dshields/dshields.c
+++ b/users/dshields/dshields.c
@@ -1,30 +1,31 @@
-extern keymap_config_t keymap_config;
+#include "quantum.h"
+#include "dshields.h"
 
-/* uncomment to reset
-void matrix_init_user(void) {
-    eeconfig_init();
-};
-*/
+extern bool process_record_dynamic_macro(uint16_t keycode, keyrecord_t *record);
 
 bool process_record_user(uint16_t keycode, keyrecord_t *record) {
     if (!process_record_dynamic_macro(keycode, record)) {
         return false;
     }
-    return true;
-}
-
-// work in progress
-uint32_t layer_state_set_user(uint32_t state) {
-    switch (biton32(state)) {
-        case DEF:
-            set_all_leds_to(0,0,0);
-            break;
-        case FUN:
-            // TODO light the fn keys
-            // set_led_to(?, 0, 128, 0);
-            // set_led_to(?, 0, 128, 0);
-            break;
+    if (keycode == KC_ESC && record->event.pressed) {
+        bool rc = true;
+        uint8_t mods = 0;
+        if ((mods = get_oneshot_mods()) && !has_oneshot_mods_timed_out()) {
+            clear_oneshot_mods();
+            unregister_mods(mods);
+            rc = false;
+        }
+        if ((mods = get_oneshot_locked_mods())) {
+            clear_oneshot_locked_mods();
+            unregister_mods(mods);
+            rc = false;
+        }
+        if (is_oneshot_layer_active()) {
+            layer_clear();
+            rc = false;
+        }
+        return rc;
     }
-    return state;
+    return true;
 }
 
diff --git a/users/dshields/dshields.h b/users/dshields/dshields.h
index c746e74fb..a65ccfea0 100644
--- a/users/dshields/dshields.h
+++ b/users/dshields/dshields.h
@@ -24,8 +24,18 @@
 #ifdef KEYBOARD_planck_light
     #define LGT_TOG RGB_TOG
     #define LGT_MOD RGB_MOD
-#else
+    #define LGT_BRT _______
+#endif
+#ifdef KEYBOARD_planck_rev3
     #define LGT_TOG BL_TOGG
     #define LGT_MOD BL_STEP
+    #define LGT_BRT BL_BRTG
+#endif
+#ifdef KEYBOARD_planck_rev6
+    #define LGT_TOG _______
+    #define LGT_MOD _______
+    #define LGT_BRT _______
 #endif
 
+enum layers   { DEF, LWR, RSE, FUN };
+enum keycodes { DYNAMIC_MACRO_RANGE = SAFE_RANGE };
diff --git a/users/dshields/rules.mk b/users/dshields/rules.mk
index a2bec4335..06f6e5e9f 100644
--- a/users/dshields/rules.mk
+++ b/users/dshields/rules.mk
@@ -1,9 +1,11 @@
-MOUSEKEY_ENABLE  = yes # Mouse keys(+4700)
-COMMAND_ENABLE   = no  # Commands for debug and configuration
-CONSOLE_ENABLE   = no  # Console for debug(+400)
-EXTRAKEY_ENABLE  = no
-SLEEP_LED_ENABLE = no  # Breathing sleep LED during USB suspend
-API_SYSEX_ENABLE = no
+SRC += dshields.c
+
+MOUSEKEY_ENABLE       = yes # Mouse keys(+4700)
+COMMAND_ENABLE        = no  # Commands for debug and configuration
+CONSOLE_ENABLE        = no  # Console for debug(+400)
+EXTRAKEY_ENABLE       = no
+SLEEP_LED_ENABLE      = no  # Breathing sleep LED during USB suspend
+API_SYSEX_ENABLE      = no
 
 ifeq ($(strip $(KEYBOARD)), planck/rev3)
 	AUDIO_ENABLE	  = no
@@ -11,6 +13,7 @@ ifeq ($(strip $(KEYBOARD)), planck/rev3)
 	RGB_MATRIX_ENABLE = no
 endif
 ifeq ($(strip $(KEYBOARD)), planck/rev6)
+	CFLAGS           += -Wno-error=deprecated
 	EXTRALDFLAGS	  = -Wl,--build-id=none
 	AUDIO_ENABLE	  = no
 	BACKLIGHT_ENABLE  = no