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-rw-r--r--common_features.mk11
-rw-r--r--tmk_core/common/chibios/eeprom_stm32.h6
-rw-r--r--tmk_core/common/chibios/flash_stm32.c3
3 files changed, 19 insertions, 1 deletions
diff --git a/common_features.mk b/common_features.mk
index ed6908f4b8..e0ae1d74c1 100644
--- a/common_features.mk
+++ b/common_features.mk
@@ -114,6 +114,17 @@ else
SRC += $(PLATFORM_COMMON_DIR)/flash_stm32.c
OPT_DEFS += -DEEPROM_EMU_STM32F072xB
OPT_DEFS += -DSTM32_EEPROM_ENABLE
+ else ifeq ($(MCU_SERIES)_$(MCU_LDSCRIPT), STM32F0xx_STM32F042x6)
+
+ # Stack sizes: Since this chip has limited RAM capacity, the stack area needs to be reduced.
+ # This ensures that the EEPROM page buffer fits into RAM
+ USE_PROCESS_STACKSIZE = 0x600
+ USE_EXCEPTIONS_STACKSIZE = 0x300
+
+ SRC += $(PLATFORM_COMMON_DIR)/eeprom_stm32.c
+ SRC += $(PLATFORM_COMMON_DIR)/flash_stm32.c
+ OPT_DEFS += -DEEPROM_EMU_STM32F042x6
+ OPT_DEFS += -DSTM32_EEPROM_ENABLE
else ifneq ($(filter $(MCU_SERIES),STM32L0xx STM32L1xx),)
OPT_DEFS += -DEEPROM_DRIVER
COMMON_VPATH += $(DRIVER_PATH)/eeprom
diff --git a/tmk_core/common/chibios/eeprom_stm32.h b/tmk_core/common/chibios/eeprom_stm32.h
index e689145954..ea0ce06400 100644
--- a/tmk_core/common/chibios/eeprom_stm32.h
+++ b/tmk_core/common/chibios/eeprom_stm32.h
@@ -36,12 +36,14 @@
# define MCU_STM32F103RB
#elif defined(EEPROM_EMU_STM32F072xB)
# define MCU_STM32F072CB
+#elif defined(EEPROM_EMU_STM32F042x6)
+# define MCU_STM32F042K6
#else
# error "not implemented."
#endif
#ifndef EEPROM_PAGE_SIZE
-# if defined(MCU_STM32F103RB)
+# if defined(MCU_STM32F103RB) || defined(MCU_STM32F042K6)
# 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) || defined(MCU_STM32F072CB)
@@ -55,6 +57,8 @@
#ifndef EEPROM_START_ADDRESS
# if defined(MCU_STM32F103RB) || defined(MCU_STM32F072CB)
# define FEE_MCU_FLASH_SIZE 128 // Size in Kb
+# elif defined(MCU_STM32F042K6)
+# define FEE_MCU_FLASH_SIZE 32 // Size in Kb
# elif defined(MCU_STM32F103ZE) || defined(MCU_STM32F103RE)
# define FEE_MCU_FLASH_SIZE 512 // Size in Kb
# elif defined(MCU_STM32F103RD)
diff --git a/tmk_core/common/chibios/flash_stm32.c b/tmk_core/common/chibios/flash_stm32.c
index e166fc5e6e..e8b3dc4bc9 100644
--- a/tmk_core/common/chibios/flash_stm32.c
+++ b/tmk_core/common/chibios/flash_stm32.c
@@ -25,6 +25,9 @@
#elif defined(EEPROM_EMU_STM32F072xB)
# define STM32F072xB
# include "stm32f0xx.h"
+#elif defined(EEPROM_EMU_STM32F042x6)
+# define STM32F042x6
+# include "stm32f0xx.h"
#else
# error "not implemented."
#endif