高级回复 X5045读写一体化C51程序包HotPower的文潭.docx

1、高级回复 X5045读写一体化C51程序包 HotPower的文潭高级回复 X5045读写一体化C51程序包 - HotPower的文潭 X5045读写一体化C51程序包 发表于 2006/12/30 1:46:50 X5045读写一体化C51程序包-(精)(11972字)hotpower2004-9-5 13:37:56130次void X5045SpiOpen(void);/打开X5045片选void X5045SpiClose(void);/关闭X5045片选void X5045WriteEnable(void);/软件使能X5045写操作void X5045WriteDisable(v

2、oid);/软件禁止X5045写操作unsigned char X5045SpiSend(unsigned char val);/X5045收发SPI协议void X5045WriteByte(unsigned int addr, unsigned char val);/写X5045一个字节void X5045WriteWord(unsigned int addr, unsigned int val);/写X5045一个字unsigned char X5045ReadByte(unsigned int addr);/读X5045一个字节unsigned int X5045ReadWord(un

3、signed int addr);/读X5045一个字unsigned char X5045ReadStatus(void);/读X5045状态void X5045WriteStatus(unsigned char val);/写X5045状态void X5045WriteWait(void);/等待X5045写入完成/*- 打开X5045片选-*/void X5045SpiOpen(void) EEPROMCS = 1;/WDT EEPROMSCK = 0; EEPROMSIO = 1;/SO=SI=1,释放总线 EEPROMCS = 0;/WDT;打开X5045片选CS/*- 关闭X504

4、5片选-*/void X5045SpiClose(void) EEPROMCS = 1;/关闭X5045片选CS EEPROMSIO = 1;/SO=SI=1,释放总线 EEPROMSCK = 0;/*- 软件使能X5045写操作-*/void X5045WriteEnable(void) X5045SpiOpen();/打开X5045片选 EEPROMWP = 1;/硬件使能X5045写操作 X5045SpiSend(WREN);/发送使能X5045写命令 X5045SpiClose();/关闭X5045片选/*- 软件禁止X5045写操作-*/void X5045WriteDisable(

5、void) X5045SpiOpen();/打开X5045片选 X5045SpiSend(WRDI);/发送禁止X5045写命令 EEPROMWP = 0;/硬件禁止X5045写操作 X5045SpiClose();/关闭X5045片选/*- X5045收发SPI协议-*/unsigned char X5045SpiSend(unsigned char val)unsigned char i; WDTRST = 0x1e;/89s52内狗 WDTRST = 0xe1;/89s52内狗 ACC = val; for (i = 8; i > 0; i -) CY = EEPROMSO;/取数

6、据SO _rlca_();/存数据ACC.0读数据ACC.7同时进行EEPROMSI = CY;/送数据SIEEPROMSCK = 1;/上升沿打入数据 _nop_();EEPROMSCK = 0;/下降沿读入数据(首次为假动作) return ACC;/*- 写X5045一个字节-*/void X5045WriteByte(unsigned int addr, unsigned char val)unsigned char temp; temp = WRITE; if (addr >> 8) & 0x01) temp |= 8; X5045WriteEnable();/使

7、能X5045写操作 X5045SpiOpen();/打开X5045片选 X5045SpiSend(temp);/发送X5045写命令及高位地址 X5045SpiSend(addr & 0xff);/发送X5045写低位地址 X5045SpiSend(val);/发送X5045写数据 X5045SpiClose();/关闭X5045片选 X5045WriteWait();/等待本次X5045写入完成 X5045WriteDisable();/禁止X5045写操作/*- 写X5045一个字-*/void X5045WriteWord(unsigned int addr, unsigned

8、int val)unsigned char temp; temp = WRITE; if (addr >> 8) & 0x01) temp |= 8; X5045WriteEnable();/使能X5045写操作 X5045SpiOpen();/打开X5045片选 X5045SpiSend(temp);/发送X5045写命令及高位地址 X5045SpiSend(addr & 0xff);/发送X5045写低位地址 X5045SpiSend(val & 0xff);/发送X5045写低位数据 X5045SpiSend(val >> 8);/发送X5

9、045写高位数据 X5045SpiClose();/关闭X5045片选 X5045WriteWait();/等待本次X5045写入完成 X5045WriteDisable();/禁止X5045写操作/*- 读X5045一个字节-*/unsigned char X5045ReadByte(unsigned int addr)unsigned char val; X5045SpiOpen();/打开X5045片选 val = READ; if (addr >> 8) & 0x01) val |= 8; X5045SpiSend(val);/发送X5045读命令及高位地址 X50

10、45SpiSend(addr & 0xff);/发送X5045读低位地址 val = X5045SpiSend(0xff);/接收X5045读数据 X5045SpiClose();/关闭X5045片选 return val;/*- 读X5045一个字-*/unsigned int X5045ReadWord(unsigned int addr)unsigned char val; X5045SpiOpen();/打开X5045片选 val = READ; if (addr >> 8) & 0x01) val |= 8; X5045SpiSend(val);/发送X5

11、045读命令及高位地址 X5045SpiSend(addr & 0xff);/发送X5045读低位地址 val = X5045SpiSend(0xff);/接收X5045读低位数据 addr = X5045SpiSend(0xff);/接收X5045读高位数据 X5045SpiClose();/关闭X5045片选 addr <<= 8; addr |= val; return addr;/*- 读X5045状态-*/unsigned char X5045ReadStatus(void)unsigned char val; X5045SpiOpen();/打开X5045片选

12、X5045SpiSend(RDSR);/发送读X5045状态命令 val = X5045SpiSend(0xff);/接收X5045状态数据 X5045SpiClose();/关闭X5045片选 return val;/*- 写X5045状态-*/void X5045WriteStatus(unsigned char val) X5045SpiOpen();/打开X5045片选 X5045SpiSend(WRSR);/发送写X5045状态命令 X5045SpiSend(val);/发送X5045状态数据 X5045SpiClose();/关闭X5045片选/*- 等待X5045写入完成-*/v

13、oid X5045WriteWait(void) while (X5045ReadStatus() & WIP);/WIP=0 退出系统注：本文被午夜听风加精. X5045SpiSend()的一个变例(平时EEPROMSCK=1)(868字)hotpower18次2004-9-5 19:01:01unsigned char X5045SpiSend(unsigned char val)unsigned char i; ACC = val; for (i = 8; i > 0; i -) EEPROMSCK = 0;/下降沿读入数据_nop_();/延时CY = EEPROMSO;/取数据SO _rlca_();/存数据ACC.0读数据ACC.7同时进行EEPROMSI = CY;/送数据SI_nop_();/延时EEPROMSCK = 1;/上升沿打入数据_nop_();/延时EEPROMSI = 1;/释放总线SI return ACC;系统分类: 单片机 用户分类: Keil C51标签: 无标签 发表评论 阅读全文(2673) | 回复(0)