hc32f460: Add support for hc32f460 micro-controllers

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

src/hc32f460/Kconfig

@@ -0,0 +1,79 @@
+# Kconfig settings for Huada HC32F460 processor
+
+if MACH_HC32F460
+
+config HC32F460_SELECT
+    bool
+    default y
+    select HAVE_GPIO
+    select HAVE_GPIO_ADC
+    select HAVE_GPIO_BITBANGING
+    select HAVE_STRICT_TIMING
+    select HAVE_GPIO_HARD_PWM
+    select HAVE_STEPPER_BOTH_EDGE
+
+config BOARD_DIRECTORY
+    string
+    default "hc32f460"
+
+
+######################################################################
+# Communication interface
+######################################################################
+
+choice
+    prompt "Communication interface"
+    config HC32F460_SERIAL_PA7_PA8
+        bool "Serial (PA7 & PA8) - Creality Ender 2 PRO"
+        select SERIAL
+    config HC32F460_SERIAL_PA3_PA2
+        bool "Serial (PA3 & PA2) - Anycube"
+        select SERIAL
+    config HC32F460_SERIAL_PA15_PA9
+        bool "Serial (PA15 & PA09) - Voxelab"
+        select SERIAL
+    config HC32F460_SERIAL_PC0_PC1
+        bool "Serial (PC0 & PC1) - on LCD connector"
+        select SERIAL
+endchoice
+
+
+######################################################################
+# Bootloader
+# bootloader moves code and then VTOR.RESET points here:
+######################################################################
+config FLASH_SIZE
+    hex
+    default 0x40000
+
+config FLASH_APPLICATION_ADDRESS
+    default 0x8000  # Aquila is 0xC000
+
+config FLASH_BOOT_ADDRESS
+    hex
+    default 0x0
+
+config RAM_SIZE
+    hex
+    default 0x8000
+
+# use the fast RAM in the HC32F460
+config RAM_START
+    hex
+    default 0x1fff8000
+
+config STACK_SIZE
+    int
+    default 1024
+
+
+config CLOCK_FREQ
+    int
+    default 200000000   # Voxelab uses 168000000
+
+
+config MCU
+    string
+    default "HC32F460"
+
+endif