hc32f460: Add support for hc32f460 micro-controllers

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

src/hc32f460/internal.h

@@ -0,0 +1,29 @@
+#ifndef __HC32F460_INTERNAL_H
+#define __HC32F460_INTERNAL_H
+
+
+// Local definitions for Huada HC32F460
+
+#include "autoconf.h"
+#include "hc32f460.h"
+
+// The HC32F460 library uses a port address and a shifted pin bit
+//  eg en_result_t PORT_Toggle(en_port_t enPort, uint16_t u16Pin);
+//  see hc32f460_gpio.h
+
+
+// encode and decode gpio ports and pins
+#define GPIO(PORT, NUM) (((PORT)-'A') * 16 + (NUM))
+#define GPIO2PORT(GPIO) ((GPIO) / 16)
+#define GPIO2BIT(GPIO) (1<<((GPIO) % 16))
+#define GPIO2PIN(GPIO) ((GPIO) % 16)
+
+#define GPIO_INPUT  0
+#define GPIO_OUTPUT 1
+
+void gpio_peripheral(uint32_t pin, int func, int pull_up);
+
+// from local interrupts.c - helper
+void IrqRegistration(en_int_src_t irqSrc, IRQn_Type irqType);
+
+#endif // internal.h