I tested the toolchain for RISC-V that I built on the Ubuntu 20.04 with a CH32V103R Mini Evaluation board (CH32V103R8T6). I used one of the sample codes on the GitHub – openwch/ch32v103. I cloned the repository first.
git clone https://github.com/openwch/ch32v103.git<br>cd ch32v103/EVT/EXAM/GPIO/GPIO_Toggle/User
Then I created a Makefile as listed below in the ch32v103/EVT/EXAM/GPIO/GPIO_Toggle/User directory (GitHub).
# ---------------------------------------------------------------------- # Macros for User App # ---------------------------------------------------------------------- USER_DIR = . USER_OBJS = main.o system_ch32v10x.o USER_SOURCES = $(USER_OBJS:.o=.c) USER_DEPENDS = $(USER_OBJS:.o=.d) APP_NAME = gpio_toggle ELF_FILE_NAME = $(APP_NAME).elf DUMP_FILE_NAME = $(APP_NAME).lst HEX_FILE_NAME = $(APP_NAME).hex MAP_FILE_NAME = $(APP_NAME).map # ---------------------------------------------------------------------- # Macros for WCH common library sources # ---------------------------------------------------------------------- WCH_DIR = ../../../SRC WCH_CORE_INC_DIR = $(WCH_DIR)/Core WCH_START_INC_DIR = $(WCH_DIR)/Startup WCH_START_SRC_DIR = $(WCH_DIR)/Startup WCH_START_OBJS = startup_ch32v10x.o WCH_START_SOURCES = $(WCH_START_OBJS:.o=.s) WCH_START_DEPENDS = $(WCH_START_SOURCES:.s=.d) WCH_PERI_INC_DIR = $(WCH_DIR)/Peripheral/inc WCH_PERI_SRC_DIR = $(WCH_DIR)/Peripheral/src WCH_PERI_OBJS = \ ch32v10x_gpio.o ch32v10x_usart.o ch32v10x_rcc.o ch32v10x_misc.o WCH_PERI_SOURCES = $(WCH_PERI_OBJS:.o=.c) WCH_PERI_DEPENDS = $(WCH_PERI_SOURCES:.c=.d) WCH_DEBUG_INC_DIR = $(WCH_DIR)/Debug WCH_DEBUG_SRC_DIR = $(WCH_DIR)/Debug WCH_DEBUG_OBJS = debug.o WCH_DEBUG_SOURCES = $(WCH_DEBUG_OBJS:.o=.c) WCH_DEBUG_DEPENDS = $(WCH_DEBUG_SOURCES:.c=.d) WCH_LD_SCRIPT = $(WCH_DIR)/Ld/Link.ld # ---------------------------------------------------------------------- # Macros for Common part # ---------------------------------------------------------------------- SOURCES = $(USER_SOURCES) $(WCH_START_SOURCES) $(WCH_PERI_SOURCES) $(WCH_DEBUG_SOURCES) DEPENDS = $(USER_DEPENDS) $(WCH_START_DEPENDS) $(WCH_PERI_DEPENDS) $(WCH_DEBUG_DEPENDS) OBJS = $(USER_OBJS) $(WCH_START_OBJS) $(WCH_PERI_OBJS) $(WCH_DEBUG_OBJS) VPATH = $(USER_DIR) $(WCH_START_SRC_DIR) $(WCH_PERI_SRC_DIR) $(WCH_DEBUG_SRC_DIR) TARGETS = $(HEX_FILE_NAME) # ---------------------------------------------------------------------- # Build Options # ---------------------------------------------------------------------- TOOL_PREFIX = riscv32-unknown-elf TOOL_PATH = $(HOME)/x-tools/$(TOOL_PREFIX) TOOL_LIB = $(TOOL_PATH)/$(TOOL_PREFIX) CC = $(TOOL_PREFIX)-gcc LD = $(CC) OBJCOPY = $(TOOL_PREFIX)-objcopy OBJDUMP = $(TOOL_PREFIX)-objdump INCLUDES = \ -I $(USER_DIR) -I $(WCH_CORE_INC_DIR) -I $(WCH_PERI_INC_DIR) -I $(WCH_DEBUG_INC_DIR) COMMON_FLAGS = \ -mabi=ilp32 -msmall-data-limit=8 -mno-save-restore \ -Os -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections \ -Wunused -Wuninitialized -MMD SFLAGS = -march=rv32imac_zicsr $(COMMON_FLAGS) CFLAGS = -march=rv32imac $(COMMON_FLAGS) LDFLAGS = -march=rv32imac $(COMMON_FLAGS) -T $(WCH_LD_SCRIPT) \ -nostartfiles -Xlinker --gc-sections -Wl,-Map,$(MAP_FILE_NAME) \ -specs=nano.specs -specs=nosys.specs # ---------------------------------------------------------------------- # Default Rules # ---------------------------------------------------------------------- .s.o: $(CC) $(SFLAGS) $(INCLUDES) -o $@ -c $< .c.o: $(CC) $(CFLAGS) $(INCLUDES) -o $@ -c $< .c.d: $(CC) $(CFLAGS) $(INCLUDES) -o $@ -c $< # ---------------------------------------------------------------------- # Build Rules # ---------------------------------------------------------------------- all: $(TARGETS) $(DEPENDS) : $(SOURCES) $(TARGETS) : $(OBJS) $(CC) $(LDFLAGS) -o $(ELF_FILE_NAME) $(OBJS) $(OBJCOPY) -O ihex $(ELF_FILE_NAME) $@ $(OBJDUMP) --all-headers --demangle --disassemble $(ELF_FILE_NAME) > $(DUMP_FILE_NAME) .PHONY : clean depend clean: $(RM) $(TARGETS) $(OBJS) $(DEPENDS) $(ELF_FILE_NAME) $(DUMP_FILE_NAME) $(MAP_FILE_NAME) $(WCH_START_SOURCES) -include $(DEPENDS)
I also copied the openocd and wch-riscv.cfg files I built before into this directory. I made and flashed a hex file of the GPIO_Toggle sample program by running make and openocd.
export PATH=$PATH:$HOME/x-tools/riscv32-unknown-elf/bin make sudo ./openocd -f wch-riscv.cfg -c init -c halt -c "program gpio_toggle.hex" -c exit
I used a WCH-Link to flash the CH32V103R Mini Evaluation board this time.
I connected between the P1 header PA0 pin and theP4 header LED1 pin by a jump wire to see the toggling of the GPIO PA0 pin as the blinking of the LED1 (The small blue LED at the bottom right corner).
