能打印了，系统还跑不起来

Project/Src/rt-thread/board.c

@@ -14,6 +14,9 @@
 #include "main.h"
 #include <rthw.h>
 #include <rtthread.h>
+#include "libc.h"
+#include "string.h"
+
 void SystemClock_Config(void);
 #if 1
 #define _SCB_BASE       (0xE000E010UL)
@@ -103,32 +106,42 @@ void mpu_init(void)
 	MPU->CTRL=1;
 }
 
-
+const libc_device_file *g_usart;
 
 /**
  * This function will initial your board.
  */
 void rt_hw_board_init()
 {	
-	NVIC_SetVectorTable(NVIC_VectTab_FLASH,(u32)128*1024);		
+	// NVIC_SetVectorTable(NVIC_VectTab_FLASH,(u32)128*1024);		
+	NVIC_SetVectorTable(NVIC_VectTab_FLASH,(u32)0);		
 	_SysTick_Config (SystemCoreClock/1000);
-//	LED_Init();				// LED初始<E5889D>?
-//	Usart_Config();		//	串口初始<E5889D>?
-//	SDRAM_Init();		 	// sdram要先于emwin之前初始<E5889D>?
-//	sFLASH_Init();
-	//SPI_Flash_Init(); 
+	LED_Init();				// LED初始<E5889D>?
+	Usart_Config();		//	串口初始<E5889D>?
+	SDRAM_Init();		 	// sdram要先于emwin之前初始<E5889D>?
+	sFLASH_Init();
 	mymem_init();
 	rt_system_heap_init(rt_heap_begin_get(),rt_heap_end_get());
-	irq_vector_init();
+	// irq_vector_init();
 	mpu_init();
 	Touch_Init();			// 触摸屏初始化
 	USART3_Init();
 	RANDOM_Init();
 	// USBD_InitAsVcp ();
-
+	g_usart = libc_find_dev("usart");
+	g_usart->open();
 }
 
-void OS_CPU_SysTickHandler(void)
+
+void rt_hw_console_output(const char *str)
+{
+  /* empty console output */
+	g_usart->write(str,strlen(str));
+}
+
+
+
+void SysTick_Handler(void)
 {
 	/* enter interrupt */
 	rt_interrupt_enter();