Add Satisfaction75 to QMK, Enable EEPROM on stm32f072 (#5094)

* Add stm32f072 base ck4x4 to handwired

* add prints

* Save these tries

* Save changes again

* Working hadron oled

* OLEd working but ws2812b still iffy:

* save another try

* Encoder feature + OLED

* RTC code

* Implement clock setting mode

* Whitespace

* Encoder hooked up to working LED PWM code

* Add missing files

* eeprom changes

* Save changes

* Move i2c master

* Move satisfaction75 under cannonkeys

* Set proper default folder

* Revert some core changes

* Undo paved iris changes

* Reorganize code for maintainability and prep for new features

* Add starting code for clock OLED mode

* Clock set mode finished

* Add custom encoder modes

* Actually add VIA keymap

* Gate to only 072

* fix gate for only 072

* Update header guards and includes

* Update i2c selection strategy

* Update board.c to handle software reset to DFU

1 files changed, 118 insertions, 0 deletions

diff --git a/keyboards/cannonkeys/satisfaction75/satisfaction75.h b/keyboards/cannonkeys/satisfaction75/satisfaction75.h
new file mode 100644
index 000000000..5f9a1e48b
--- /dev/null
+++ b/keyboards/cannonkeys/satisfaction75/satisfaction75.h
@@ -0,0 +1,118 @@
+#pragma once
+
+#include "quantum.h"
+
+// The first section contains all of the arguements
+// The second converts the arguments into a two-dimensional array
+ #define LAYOUT_default( \
+	K000,       K002, K003, K004, K005, K006, K007, K008, K009, K010, K011, K012, K013,             \
+	K100, K101, K102, K103, K104, K105, K106, K107, K108, K109, K110, K111, K112, K113,       K115, \
+	K200, K201, K202, K203, K204, K205, K206, K207, K208, K209, K210, K211, K212, K213,       K215, \
+	K300, K301, K302, K303, K304, K305, K306, K307, K308, K309, K310, K311, K312,             K315, \
+	K400, K401, K402, K403, K404, K405, K406, K407, K408, K409, K410, K411,       K413,       K415, \
+	K500, K501, K502,             K505,                   K509, K510, K511, K512, K513,       K515  \
+) { \
+	{ K000,  KC_NO, K002,  K003,  K004,  K005,  K006,  K007,  K008,  K009,  K010,  K011,  K012,  K013,  KC_NO,  KC_NO }, \
+	{ K100,  K101,  K102,  K103,  K104,  K105,  K106,  K107,  K108,  K109,  K110,  K111,  K112,  K113,  KC_NO,  K115 }, \
+	{ K200,  K201,  K202,  K203,  K204,  K205,  K206,  K207,  K208,  K209,  K210,  K211,  K212,  K213,  KC_NO,  K215 }, \
+	{ K300,  K301,  K302,  K303,  K304,  K305,  K306,  K307,  K308,  K309,  K310,  K311,  K312,  KC_NO, KC_NO,  K315 }, \
+	{ K400,  K401,  K402,  K403,  K404,  K405,  K406,  K407,  K408,  K409,  K410,  K411,  KC_NO, K413,  KC_NO,  K415 }, \
+	{ K500,  K501,  K502,  KC_NO, KC_NO, K505,  KC_NO, KC_NO, KC_NO, K509,  K510,  K511,  K512,  K513,  KC_NO,  K515 } \
+}
+
+/* screen off after this many milliseconds */
+#define ScreenOffInterval 60000 /* milliseconds */
+
+typedef union {
+    uint8_t raw;
+    struct {
+        bool    enable :1;
+        bool    breathing : 1;
+        uint8_t level  :6;
+    };
+} backlight_config_t;
+
+// Start these at the USER code range in VIA
+enum my_keycodes {
+  ENC_PRESS = 0x5F80,
+  CLOCK_SET,
+  OLED_TOGG
+};
+
+enum encoder_modes {
+  ENC_MODE_VOLUME,
+  ENC_MODE_MEDIA,
+  ENC_MODE_SCROLL,
+  ENC_MODE_BRIGHTNESS,
+  ENC_MODE_BACKLIGHT,
+  ENC_MODE_CUSTOM0,
+  ENC_MODE_CUSTOM1,
+  ENC_MODE_CUSTOM2,
+  _NUM_ENCODER_MODES,
+  ENC_MODE_CLOCK_SET // This shouldn't be included in the default modes, so we put it after NUM_ENCODER_MODES
+};
+
+enum oled_modes {
+  OLED_DEFAULT,
+  OLED_TIME,
+  OLED_OFF,
+  _NUM_OLED_MODES
+};
+
+
+// Keyboard Information
+extern volatile uint8_t led_numlock;
+extern volatile uint8_t led_capslock;
+extern volatile uint8_t led_scrolllock;
+extern uint8_t layer;
+
+// OLED Behavior
+extern uint16_t last_flush;
+extern bool queue_for_send;
+extern uint8_t oled_mode;
+extern bool oled_sleeping;
+
+// Encoder Behavior
+extern uint8_t encoder_value;
+extern uint8_t encoder_mode;
+extern uint8_t enabled_encoder_modes;
+
+// RTC
+extern RTCDateTime last_timespec;
+extern uint16_t last_minute;
+
+// RTC Configuration
+extern bool clock_set_mode;
+extern uint8_t time_config_idx;
+extern int8_t hour_config;
+extern int16_t minute_config;
+extern int8_t year_config;
+extern int8_t month_config;
+extern int8_t day_config;
+extern uint8_t previous_encoder_mode;
+
+// Backlighting
+extern backlight_config_t kb_backlight_config;
+extern bool kb_backlight_breathing;
+
+void pre_encoder_mode_change(void);
+void post_encoder_mode_change(void);
+void change_encoder_mode(bool negative);
+uint16_t handle_encoder_clockwise(void);
+uint16_t handle_encoder_ccw(void);
+uint16_t handle_encoder_press(void);
+
+void update_time_config(int8_t increment);
+
+__attribute__ ((weak))
+void draw_ui(void);
+void draw_default(void);
+void draw_clock(void);
+
+void backlight_init_ports(void);
+void backlight_set(uint8_t level);
+bool is_breathing(void);
+void breathing_enable(void);
+void breathing_disable(void);
+// void backlight_save_to_eeprom(uint8_t level);
+// uint8_t backlight_config_load();