[bsp][nuvoton_m487]Add EMAC drive

Author: Bluebear233

bsp/nuvoton_m487/README.md

@@ -42,6 +42,7 @@
 | 驱动 | 支持情况  |  备注  |
 | ------ | ----  | :------:  |
 | UART | 支持 | UART0|
+| EMAC | 支持 | EH0|
 
 ### 4.1 IO在板级支持包中的映射情况
 

bsp/nuvoton_m487/driver/SConscript

@@ -1,11 +1,12 @@
-# RT-Thread building script for component
+# RT-Thread building script for component
 
 from building import *
 
 cwd     = GetCurrentDir()
 src     = Split('''
 board.c
 drv_uart.c
+drv_emac.c
 ''')
 CPPPATH = [cwd]
 

bsp/nuvoton_m487/driver/board.c

@@ -8,9 +8,7 @@
  * 2018-11-16    bluebear233   first version
  */
 
-#include <rtconfig.h>
 #include <rtthread.h>
-#include <rthw.h>
 #include "NuMicro.h"
 #include "drv_uart.h"
 #include "board.h"

bsp/nuvoton_m487/driver/board.h

@@ -15,22 +15,7 @@
 #define SRAM_SIZE         (160)
 #define SRAM_END          (0x20000000 + SRAM_SIZE * 1024)
 
-#define RT_UART_485_MODE      1
-#define RT_UART_FLOW_CTS_CTRL 2
-#define RT_UART_FLOW_RTS_CTRL 3
-#define RT_UART_CLEAR_BUF     4
-
-void rt_hw_pdma_init(void);
-void rt_hw_uart_handle(void);
-void rt_hw_sc_init(void);
-void rt_hw_usart_init(void);
-void rt_hw_uusart_init(void);
-void rt_hw_io_init(void);
-void phy_error_led(void);
-
-unsigned char *eth_get_default_mac(void);
-void eth_set_mac(const unsigned char * mac);
-void wdt_reload(void);
-unsigned int get_uid(void);
+void rt_hw_board_init(void);
+void rt_hw_cpu_reset(void);
 
 #endif /* BOARD_H_ */