Show version over UART and boot.

Makefile

@@ -66,6 +66,7 @@ OBJS += ui/scanner.o
 OBJS += ui/status.o
 OBJS += ui/ui.o
 OBJS += ui/welcome.o
+OBJS += version.o
 
 OBJS += main.o
 
@@ -81,9 +82,12 @@ LD = arm-none-eabi-gcc
 OBJCOPY = arm-none-eabi-objcopy
 SIZE = arm-none-eabi-size
 
+GIT_HASH := $(shell git rev-parse --short HEAD)
+
 ASFLAGS = -mcpu=cortex-m0
 CFLAGS = -Os -Wall -Werror -mcpu=cortex-m0 -fno-builtin -fshort-enums -fno-delete-null-pointer-checks -std=c11 -MMD
 CFLAGS += -DPRINTF_INCLUDE_CONFIG_H
+CFLAGS += -DGIT_HASH=\"$(GIT_HASH)\"
 LDFLAGS = -mcpu=cortex-m0 -nostartfiles -Wl,-T,firmware.ld
 
 ifeq ($(DEBUG),1)
@@ -111,6 +115,8 @@ debug:
 flash:
 	/opt/openocd/bin/openocd -c "bindto 0.0.0.0" -f interface/jlink.cfg -f dp32g030.cfg -c "write_image firmware.bin 0; shutdown;"
 
+version.o: .FORCE
+
 $(TARGET): $(OBJS)
 	$(LD) $(LDFLAGS) $^ -o $@ $(LIBS)
 
@@ -122,6 +128,8 @@ bsp/dp32g030/%.h: hardware/dp32g030/%.def
 %.o: %.S
 	$(AS) $(ASFLAGS) $< -o $@
 
+.FORCE:
+
 -include $(DEPS)
 
 clean:

app/uart.c

@@ -30,6 +30,7 @@
 #include "misc.h"
 #include "settings.h"
 #include "sram-overlay.h"
+#include "version.h"
 
 #define DMA_INDEX(x, y) (((x) + (y)) % sizeof(UART_DMA_Buffer))
 
@@ -178,7 +179,7 @@ static void SendVersion(void)
 
 	Reply.Header.ID = 0x0515;
 	Reply.Header.Size = sizeof(Reply.Data);
-	strcpy(Reply.Data.Version, "Open Edition FW");
+	strcpy(Reply.Data.Version, Version);
 	Reply.Data.bHasCustomAesKey = bHasCustomAesKey;
 	Reply.Data.bIsInLockScreen = bIsInLockScreen;
 	Reply.Data.Challenge[0] = gChallenge[0];

ui/welcome.c

@@ -22,6 +22,7 @@
 #include "settings.h"
 #include "ui/helper.h"
 #include "ui/welcome.h"
+#include "version.h"
 
 void UI_DisplayWelcome(void)
 {
@@ -45,6 +46,7 @@ void UI_DisplayWelcome(void)
 		}
 		UI_PrintString(WelcomeString0, 0, 127, 1, 10, true);
 		UI_PrintString(WelcomeString1, 0, 127, 3, 10, true);
+		UI_PrintString(Version, 0, 127, 5, 10, true);
 		ST7565_BlitStatusLine();
 		ST7565_BlitFullScreen();
 	}

version.c

@@ -0,0 +1,2 @@
+const char Version[] = "OEFW-" GIT_HASH;
+

version.h

@@ -0,0 +1,23 @@
+/* Copyright 2023 Dual Tachyon
+ * https://github.com/DualTachyon
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *     Unless required by applicable law or agreed to in writing, software
+ *     distributed under the License is distributed on an "AS IS" BASIS,
+ *     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *     See the License for the specific language governing permissions and
+ *     limitations under the License.
+ */
+
+#ifndef VERSION_H
+#define VERSION_H
+
+extern const char Version[];
+
+#endif
+