hc32f460: Add support for hc32f460 micro-controllers

Signed-off-by: Steven Gotthardt <gotthardt@gmail.com>

src/hc32f460/Makefile

@@ -0,0 +1,37 @@
+# hc32f460 build rules
+
+# Setup the toolchain
+CROSS_PREFIX=arm-none-eabi-
+
+dirs-y += src/hc32f460 src/generic lib/hc32f460/driver/src lib/hc32f460/mcu/common
+
+CFLAGS += -mthumb -mcpu=cortex-m4 -Isrc/hc32f460 -Ilib/hc32f460/driver/inc -Ilib/hc32f460/mcu/common -Ilib/cmsis-core -DHC32F460
+
+CFLAGS_klipper.elf += --specs=nano.specs --specs=nosys.specs
+CFLAGS_klipper.elf += -T $(OUT)src/generic/armcm_link.ld
+$(OUT)klipper.elf: $(OUT)src/generic/armcm_link.ld
+
+# Add source files
+src-y += hc32f460/main.c
+src-y += hc32f460/interrupts.c
+src-y += hc32f460/gpio.c
+src-y += ../lib/hc32f460/mcu/common/system_hc32f460.c
+src-y += ../lib/hc32f460/driver/src/hc32f460_clk.c
+src-y += ../lib/hc32f460/driver/src/hc32f460_efm.c
+src-y += ../lib/hc32f460/driver/src/hc32f460_sram.c
+src-y += ../lib/hc32f460/driver/src/hc32f460_utility.c
+src-y += ../lib/hc32f460/driver/src/hc32f460_gpio.c
+src-y += ../lib/hc32f460/driver/src/hc32f460_pwc.c
+src-$(CONFIG_HAVE_GPIO_ADC) += hc32f460/adc.c ../lib/hc32f460/driver/src/hc32f460_adc.c
+src-$(CONFIG_SERIAL) += hc32f460/serial.c generic/serial_irq.c ../lib/hc32f460/driver/src/hc32f460_usart.c
+src-$(CONFIG_HAVE_GPIO_HARD_PWM) += hc32f460/hard_pwm.c ../lib/hc32f460/driver/src/hc32f460_timera.c
+src-y += generic/armcm_boot.c generic/armcm_irq.c generic/armcm_timer.c
+src-y += generic/armcm_reset.c generic/crc16_ccitt.c
+
+
+# Build the additional bin output file
+target-y += $(OUT)klipper.bin
+
+$(OUT)klipper.bin: $(OUT)klipper.elf
+	@echo "  Creating bin file $@"
+	$(Q)$(OBJCOPY) -O binary $< $@