Add button tests

This is implemented by connecting the DTR pin of the serial device to the BTN_UP pin of the watch.

Also, make it possible to flash different applications with the Makefile.

Resolves #4

firmware/Makefile

@@ -83,7 +83,7 @@ S_SOURCES   := $(call find_important, $(SOURCEDIR), '*.s')
 SPP_SOURCES := Bsp/Mcu/$(DEVICE_TYPE).S
 SOURCES     =  $(C_SOURCES) $(S_SOURCES) $(SPP_SOURCES) $(CPP_SOURCES)
 
-APPS     := ./Application/main ./Test/pass ./Test/fail ./Test/timeout ./Test/clock ./Test/stop ./Test/no_start ./Test/lptim ./Test/set_time ./Test/periodic_alarms ./Test/wakeup_irq
+APPS     := ./Application/main ./Test/pass ./Test/fail ./Test/timeout ./Test/clock ./Test/stop ./Test/no_start ./Test/lptim ./Test/set_time ./Test/periodic_alarms ./Test/wakeup_irq ./Test/button
 APP_ELFS = $(addsuffix .elf, $(APPS))
 APP_MAPS = $(addsuffix .map, $(APPS))
 APP_BINS = $(addsuffix .bin, $(APPS))
@@ -223,22 +223,22 @@ $(FONT_GEN_DIR)/large_digits.h $(FONT_GEN_DIR)/large_digits.c: Gen/fixedfont-to-
 #
 
 STM32FLASH_DEVICE = /dev/ttyUSB0
+FLASH_BIN    ?= $(OUTPUT_BIN)
 
 .PHONY: flash
 flash: $(OUTPUT_BIN)
 	@echo "FLASH $(OUTPUT_BIN)"
-	$(STM32_PROG) --connect port=SWD reset=Hwrst -w $(OUTPUT_BIN) 0x8000000 -v --go
+	$(STM32_PROG) --connect port=SWD reset=Hwrst -w $(FLASH_BIN) 0x8000000 -v --go
 
 .PHONY: jlink
 jlink: $(OUTPUT_BIN)
 	@echo "FLASH $(OUTPUT_BIN)"
-	JLinkExe -device $$(echo $(DEVICE_TYPE) | tr '[:lower:]' '[:upper:]') -if SWD \
-        -speed auto -autoconnect 1 -CommanderScript cmd.jlink
-
+	./jlink.sh $(DEVICE_TYPE) $(FLASH_BIN)
 
 .PHONY: clean
 clean:
-	rm -f $(OBJS) $(OUTPUT_BIN) $(OUTPUT_ELF) $(FONT_C_FILES) $(FONT_H_FILES) $(OUTPUT_MAP) $(addsuffix .su,$(basename $(OBJS)))
+	rm -f $(OBJS) $(OUTPUT_BIN) $(OUTPUT_ELF) $(FONT_C_FILES) $(FONT_H_FILES) $(OUTPUT_MAP) $(APPS) $(APP_ELFS) $(APP_MAPS) $(APP_BINS) $(APP_OBJS) $(addsuffix .su,$(basename $(ALL_OBJS)))
+
 
 # Please do not delete my files.
 .SECONDARY: $(ALL_OBJS) $(APP_ELFS)