2 files changed, 33 insertions, 20 deletions
diff --git a/hexedit/.gitignore b/hexedit/.gitignore
new file mode 100644
index 0000000..ef90be6
--- /dev/null
+++ b/hexedit/.gitignore
@@ -0,0 +1 @@
+hexedit.oe
diff --git a/hexedit/Makefile b/hexedit/Makefile
index 01d5224..a42b16a 100644
--- a/hexedit/Makefile
+++ b/hexedit/Makefile
@@ -1,16 +1,8 @@
-PICO_UART=/dev/ttyUSB0
+PICO = /dev/disk/by-label/RPI-RP2
+PICO_CONSOLE = /dev/ttyUSB0
 
-all: build
-
-build: hexedit.uf2
-
-dump: hexedit.bin
-	od hexedit.bin
-
-serial: hexedit.oe
-	[ -c PICO_UART ] && \
-		(cat hexedit.oe | tr "\n" "\r" > PICO_UART ; echo -n "G" > PICO_UART) || \
-		echo No serial device
+.PHONY: build
+build: hexedit.oe
 
 hexedit.oe: hexedit.bin
 	od -An -v hexedit.bin | sed "s/^ //" | tr " " "\n" > hexedit.oe
@@ -19,20 +11,40 @@ hexedit.bin: hexedit.o
 	arm-none-eabi-ld -T pico_bin.ld -o hexedit.bin hexedit.o
 	arm-none-eabi-objcopy -O binary hexedit.bin
 
+objects = hexedit.o main.o
+
+$(objects): %.o: %.s
+	arm-none-eabi-as -o $@ $<
+
 hexedit.uf2: hexedit.elf
 	../elf/elf2uf2 hexedit.elf hexedit.uf2
 
-objects = hexedit.o main.o
-
 hexedit.elf: $(objects)
 	arm-none-eabi-ld -T pico_ram_only.ld -o hexedit.elf $(objects) ../setup/setup.so
 
-$(objects): %.o: %.s
-	arm-none-eabi-as -o $@ $<
-
+.PHONY: clean
 clean:
 	rm -f hexedit.elf hexedit.uf2 hexedit.bin hexedit.oe *.o
 
-flash: hexedit.uf2
-	[ -h /dev/disk/by-label/RPI-RP2 ] || sleep 3s
-	cat hexedit.uf2 > /dev/disk/by-label/RPI-RP2
+.PHONY: dump
+dump: hexedit.bin
+	@od hexedit.bin
+
+.PHONY: serial
+serial: $(PICO_CONSOLE) hexedit.oe
+	cat hexedit.oe | tr "\n" "\r" > PICO_CONSOLE
+	echo -n "G" > PICO_CONSOLE
+
+$(PICO_CONSOLE):
+	@echo Serial device not found
+	@echo Connect USB cable from USB-UART bridge
+	@false
+
+.PHONY: flash
+flash: $(PICO) hexedit.uf2
+	cat hexedit.uf2 > $(PICO)
+
+$(PICO):
+	@echo "RPI-RP2 bootloader drive not found"
+	@echo Connect the pico with USB cable while holding bootsel button
+	@false