flash.asm

智能语音识别避障机器人 // 语音识别+机器人+超声波测距综合应用方案 // 采用特定人识别技术

//============================================================
// 文件名称：Flash.asm
// 实现功能: SPCE061 32K flash 的读写
// 日期： 	 2003/6/9
//============================================================


.INCLUDE hardware.inc

.DEFINE C_FLASH_SIZE			0x8000
.DEFINE C_FLASH_BLOCK_SIZE		0x100		//256个字节
.DEFINE C_FLASH_MATCH			0xAAAA		//识别字
.DEFINE C_FLASH_PAGE_ERASE		0x5511		//命令字_擦除一页
.DEFINE C_FLASH_MASS_ERASE		0x5522		//命令字_整体擦除
.DEFINE C_FLASH_1WORD_PGM		0x5533		//命令字_写一个字
.DEFINE C_FLASH_SEQUENT_PGM		0x5544		//命令字_写多个字
.DEFINE C_FLASH_MAIN_BLOCK		0x5555
.DEFINE C_FLASH_INFORM_BLOCK	0x5566

.DEFINE P_Flash_Ctrl  0x7555				//控制FLASH单元

.CODE
//==============================================================================
//汇编语言格式:_F_FlashWrite1Word
//功能描述:	写一个字到FLASH中
//入口参数:	1、被写数据的存储地址
//			2、被写数据
//出口参数:	无
//===============================================================================
.PUBLIC _F_FlashWrite1Word
_F_FlashWrite1Word:	 .proc 
	push bp to [sp]
	
	bp = sp+1
	r1 = C_FLASH_MATCH				//AAAA
	[P_Flash_Ctrl] = r1
	r1 = C_FLASH_1WORD_PGM			//5533
	[P_Flash_Ctrl] = r1
	r1 =  [bp+3]					//flash address
	r2 =  [bp+4]					//data
	[r1] = r2
	
	pop bp from [sp]
	retf
	.ENDP
//==============================================================================
//汇编语言格式:_F_FlashWrite
//功能描述:	顺序写多个字
//入口参数:	1、被写数据的起始地址 
//			2、被写数据 
//			3、写数据的数量
//出口参数:	无
//===============================================================================
.PUBLIC _F_FlashWrite
_F_FlashWrite: .proc 
	push bp to [sp]
	
	bp = sp+1
	r1 = [bp+3]						//flash base address
	r2 = [bp+4]						//data
	r3 = [bp+5]						//多个字节	
	r4 = C_FLASH_MATCH				//AAAA
	[P_Flash_Ctrl] = r4
L_FlashWriteLoop:
	r4 = C_FLASH_SEQUENT_PGM		//5544
	[P_Flash_Ctrl] = r4
	r4 = [r2++]
	[r1++] = r4

	r3 -= 1
	jnz L_FlashWriteLoop
	[P_Flash_Ctrl] = r3				//写结束
	
	pop bp from [sp]
	retf
	.ENDP
//==============================================================================
//汇编语言格式:_F_FlashErase
//功能描述:	擦除256字节
//入口参数:	擦除页的起始地址
//出口参数:	无
//===============================================================================
.PUBLIC _F_FlashErase
_F_FlashErase: .proc 
	push bp to [sp]
	
	bp = sp + 1
	r1 = C_FLASH_MATCH				//AAAA
	[P_Flash_Ctrl] = r1
	r1 = C_FLASH_PAGE_ERASE			//5511
	[P_Flash_Ctrl] = r1
	r1 = [bp+3]						//擦除一页
	[r1] = r1

	pop bp from [sp]
	retf
	.ENDP
    .END