Enable buttons and the display.

Kind-of-sort-of usable-ish.

Makefile

@@ -73,10 +73,11 @@ OUTPUT_ELF  ?= $(OUTPUT_NAME).elf
 
 DEVICE_DEFINE = $(subst XX,xx,$(shell echo $(DEVICE_FAMILY) | tr '[:lower:]' '[:upper:]'))
 
-CPU_FLAGS = -mthumb -mcpu=cortex-m0 -mfloat-abi=soft
+CPU_FLAGS = -mthumb -mcpu=cortex-m0plus -mfloat-abi=soft
 
 # C pedantism
-CFLAGS =  -Wall -Wextra -Wpedantic
+CFLAGS    = -Wall -Wextra -Wpedantic -Werror
+CXX_FLAGS = -Wsuggest-override -Wsuggest-final-methods -Wsuggest-final-types
 # Debug/optimization
 CFLAGS += -Os -ggdb -g3
 CFLAGS += -fdata-sections -ffunction-sections
@@ -90,7 +91,7 @@ CFLAGS += -I./lib/stm32/$(DEVICE_LINE)/Include
 CFLAGS += -I./lib/CMSIS/Core/Include
 CFLAGS += -I./lib/fonts/
 
-CXX_FLAGS = -std=c++14 -fno-exceptions -fno-rtti
+CXX_FLAGS += -std=c++14 -fno-exceptions -fno-rtti
 
 # Startup Definitions
 ASFLAGS += $(CPU_FLAGS)
@@ -130,7 +131,7 @@ $(OUTPUT_BIN): $(OUTPUT_ELF)
 
 $(OUTPUT_ELF): $(LINKER_SCRIPT) $(OBJS)
 	@echo "LD $@"
-	$(LD) -T $(LINKER_SCRIPT) $(LDFLAGS) -o $(OUTPUT_ELF) $(OBJS)
+	@$(LD) -T $(LINKER_SCRIPT) $(LDFLAGS) -o $(OUTPUT_ELF) $(OBJS)
 
 #
 # Utilities
@@ -141,7 +142,7 @@ STM32FLASH_DEVICE = /dev/ttyUSB0
 .PHONY: flash
 flash: $(OUTPUT_BIN)
 	@echo "FLASH $(OUTPUT_BIN)"
-	$(STM32_PROG) -vb 3 --connect port=SWD reset=Hwrst -w $(OUTPUT_BIN) 0x8000000 -v --go
+	$(STM32_PROG) --connect port=SWD reset=Hwrst -w $(OUTPUT_BIN) 0x8000000 -v --go
 
 .PHONY: clean
 clean: