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

3 files changed, 13 insertions, 3 deletions

diff --git a/tmk_core/common.mk b/tmk_core/common.mk
index 063115acb..94f3c2380 100644
--- a/tmk_core/common.mk
+++ b/tmk_core/common.mk
@@ -41,6 +41,11 @@ ifeq ($(PLATFORM),CHIBIOS)
     TMK_COMMON_SRC += $(PLATFORM_COMMON_DIR)/flash_stm32.c
     TMK_COMMON_DEFS += -DEEPROM_EMU_STM32F103xB
     TMK_COMMON_DEFS += -DSTM32_EEPROM_ENABLE
+  else ifeq ($(MCU_SERIES)_$(MCU_LDSCRIPT), STM32F0xx_STM32F072xB)
+    TMK_COMMON_SRC += $(PLATFORM_COMMON_DIR)/eeprom_stm32.c
+    TMK_COMMON_SRC += $(PLATFORM_COMMON_DIR)/flash_stm32.c
+    TMK_COMMON_DEFS += -DEEPROM_EMU_STM32F072xB
+    TMK_COMMON_DEFS += -DSTM32_EEPROM_ENABLE
   else
     TMK_COMMON_SRC += $(PLATFORM_COMMON_DIR)/eeprom_teensy.c
   endif
diff --git a/tmk_core/common/chibios/eeprom_stm32.h b/tmk_core/common/chibios/eeprom_stm32.h
index 892e417b7..083eb16ee 100755
--- a/tmk_core/common/chibios/eeprom_stm32.h
+++ b/tmk_core/common/chibios/eeprom_stm32.h
@@ -34,6 +34,8 @@
   #define MCU_STM32F303CC
 #elif defined(EEPROM_EMU_STM32F103xB)
   #define MCU_STM32F103RB
+#elif defined(EEPROM_EMU_STM32F072xB)
+  #define MCU_STM32F072CB
 #else
   #error "not implemented."
 #endif
@@ -42,7 +44,7 @@
     #if defined (MCU_STM32F103RB)
         #define FEE_PAGE_SIZE    (uint16_t)0x400 // Page size = 1KByte
         #define FEE_DENSITY_PAGES          2     // How many pages are used
-    #elif defined (MCU_STM32F103ZE) || defined (MCU_STM32F103RE) || defined (MCU_STM32F103RD) || defined (MCU_STM32F303CC)
+    #elif defined (MCU_STM32F103ZE) || defined (MCU_STM32F103RE) || defined (MCU_STM32F103RD) || defined (MCU_STM32F303CC) || defined(MCU_STM32F072CB)
         #define FEE_PAGE_SIZE    (uint16_t)0x800 // Page size = 2KByte
         #define FEE_DENSITY_PAGES          4     // How many pages are used
     #else
@@ -51,7 +53,7 @@
 #endif
 
 #ifndef EEPROM_START_ADDRESS
-    #if defined (MCU_STM32F103RB)
+    #if defined (MCU_STM32F103RB) || defined(MCU_STM32F072CB)
         #define FEE_MCU_FLASH_SIZE  128     // Size in Kb
     #elif defined (MCU_STM32F103ZE) || defined (MCU_STM32F103RE)
         #define FEE_MCU_FLASH_SIZE  512     // Size in Kb
diff --git a/tmk_core/common/chibios/flash_stm32.c b/tmk_core/common/chibios/flash_stm32.c
index 164654a15..832bf3908 100755
--- a/tmk_core/common/chibios/flash_stm32.c
+++ b/tmk_core/common/chibios/flash_stm32.c
@@ -22,6 +22,9 @@
 #elif defined(EEPROM_EMU_STM32F103xB)
     #define STM32F103xB
     #include "stm32f1xx.h"
+#elif defined(EEPROM_EMU_STM32F072xB)
+    #define STM32F072xB
+    #include "stm32f0xx.h"
 #else
     #error "not implemented."
 #endif
@@ -193,7 +196,7 @@ void FLASH_Lock(void)
   *   This parameter can be any combination of the following values:
   *     @arg FLASH_FLAG_PGERR: FLASH Programming error flag flag
   *     @arg FLASH_FLAG_WRPERR: FLASH Write protected error flag
-  *     @arg FLASH_FLAG_EOP: FLASH End of Programming flag                
+  *     @arg FLASH_FLAG_EOP: FLASH End of Programming flag
   * @retval None
   */
 void FLASH_ClearFlag(uint32_t FLASH_FLAG)