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, 15 insertions, 0 deletions

diff --git a/keyboards/handwired/ck4x4/ck4x4.h b/keyboards/handwired/ck4x4/ck4x4.h
new file mode 100644
index 000000000..33c1b8dd9
--- /dev/null
+++ b/keyboards/handwired/ck4x4/ck4x4.h
@@ -0,0 +1,15 @@
+#pragma once
+
+#include "quantum.h"
+
+#define LAYOUT( \
+  k00, k01, k02, k03, \
+  k10, k11, k12, k13, \
+  k20, k21, k22, k23, \
+  k30, k31, k32, k33 \
+) {\
+{ k00, k01, k02, k03 }, \
+{ k10, k11, k12, k13 }, \
+{ k20, k21, k22, k23 }, \
+{ k30, k31, k32, k33 }, \
+}