option.h

ucos2 系统是进入嵌入式系统开发的最基础的也是最入门的

#ifndef __OPTION_H__
#define __OPTION_H__

// ************* OPTIONS **************
#define MCLK (48000000)		//系统主频设定
//#define PLLON 1
//Fout = (8 + M_DIV) * Fin / [ (2+P_DIV) * (2^S_DIV) ]
#if   (MCLK==24000000)
	#define PLL_M (22)
	#define PLL_P (3)
	#define PLL_S (1)

#elif (MCLK==32000000)
	#define PLL_M (32)
	#define PLL_P (3)
	#define PLL_S (1)

#elif (MCLK==40000000)
	#define PLL_M (42)
	#define PLL_P (3)
	#define PLL_S (1)

#elif (MCLK==48000000)
	#define PLL_M (52)
	#define PLL_P (3)
	#define PLL_S (1)

#elif (MCLK==56000000)
	#define PLL_M (62)
	#define PLL_P (3)
	#define PLL_S (1)

#elif (MCLK==64000000)
	#define PLL_M (72)
	#define PLL_P (3)
	#define PLL_S (1)

#elif (MCLK==66000000)
	#define PLL_M (58)
	#define PLL_P (2)
	#define PLL_S (1)
#endif

#define WRBUFOPT (0x8)   //写缓冲使能（Enabel write buffer operation）

#define SYSCFG_0KB (0x0|WRBUFOPT)		//迟延无效，数据异常结束有效
#define SYSCFG_4KB (0x2|WRBUFOPT)		//迟延无效，数据异常结束有效
#define SYSCFG_8KB (0x6|WRBUFOPT)		//迟延无效，数据异常结束有效

//#define DRAM	    1		//In case DRAM is used
#define SDRAM	    2		//In case SDRAM is used
#define BDRAMTYPE   SDRAM	//used in power.c,44blib.c

//BUSWIDTH; 16,32
#define BUSWIDTH    (16)

#define CACHECFG    SYSCFG_8KB

#define _RAM_STARTADDRESS 0x0c000000
//08M字节 SDRAM:0x0c000000-0x0c7fffff
//16M字节 SDRAM:0x0c000000-0x0cffffff
//32M字节 SDRAM:0x0c000000-0x0dffffff
//64M字节 SDRAM:0x0c000000-0x0fffffff

//#define _ISR_STARTADDRESS 0xc3fff00   //GCS6:32M bits(4M字节) DRAM/SDRAM
#define _ISR_STARTADDRESS 0xc7fff00     //GCS6:64M bits(8M字节) DRAM/SDRAM

#define Non_Cache_Start	(0x2000000)
#define Non_Cache_End 	(0xc000000)

#endif /*__OPTION_H__*/