Add support for S7 Elephant (#4511)

* Add support for S7 Elephant

A high-end 70% custom keyboard designed and produced by jacky from Geekhack.

* Polish S7 Elephant code

Implement drashna's suggestions:

- specify bootloader
- remove unnecessary defines
- use led_set_user() for LED logic

* Correct info.json and s7_elephant.h

Correct info.json and s7_elepant.h to follow QMK convention and fix a
missing curly bracket.

1 files changed, 47 insertions, 0 deletions

diff --git a/keyboards/s7_elephant/config.h b/keyboards/s7_elephant/config.h
new file mode 100644
index 000000000..55baa4c37
--- /dev/null
+++ b/keyboards/s7_elephant/config.h
@@ -0,0 +1,47 @@
+#pragma once
+
+#include "config_common.h"
+
+/* USB Device descriptor parameter */
+#define VENDOR_ID       0xFEED
+#define PRODUCT_ID      0x0007
+#define DEVICE_VER      0x0001
+#define MANUFACTURER    jacky
+#define PRODUCT         S7 Elephant
+#define DESCRIPTION     A high-end 70% custom keyboard
+
+/* key matrix size */
+#define MATRIX_ROWS 5
+#define MATRIX_COLS 16
+
+/* key matrix pins */
+#define MATRIX_ROW_PINS { B0, B1, B2, B3, B4 }
+#define MATRIX_COL_PINS { B6, D0, D1, D2, D3, D4, D5, D6, D7, C6, C7, F4, F5, F6, F7, F1 }
+#define UNUSED_PINS
+
+/* COL2ROW or ROW2COL */
+#define DIODE_DIRECTION COL2ROW
+
+/* Set 0 if debouncing isn't needed */
+#define DEBOUNCING_DELAY 5
+
+/* Mechanical locking support. Use KC_LCAP, KC_LNUM or KC_LSCR instead in keymap */
+#define LOCKING_SUPPORT_ENABLE
+
+/* Locking resynchronize hack */
+#define LOCKING_RESYNC_ENABLE
+
+/* key combination for command */
+#define IS_COMMAND() ( \
+    keyboard_report->mods == (MOD_BIT(KC_LSHIFT) | MOD_BIT(KC_RSHIFT)) \
+)
+
+#define RGB_DI_PIN E6
+#ifdef RGB_DI_PIN
+#define RGBLIGHT_ANIMATIONS
+#define RGBLED_NUM 2
+#define RGBLIGHT_HUE_STEP 8
+#define RGBLIGHT_SAT_STEP 8
+#define RGBLIGHT_VAL_STEP 8
+#define RGBLIGHT_SLEEP
+#endif