FM25L256操作子程序.doc

#include FM25L256.h/FM25L256数据读取子程序/参数: *pDestination要读入数据的主机内存地址指针; uiSourceAddress要读取的数据在FM25L256中的地址(整形); uiNum数据个数(整形)/参数条件: uiSourceAddress+(uiNum-1)不能大于器件的最高地址; uiNum必须0;void ReadFM25L256(unsigned char *pDestination, unsigned int uiSourceAddress, unsigned int uiNum) unsigned char ucHighAddress = uiSourceAddress 8; /高位地址 SPCR = (1SPE)|(1MSTR)|(0CPOL)|(0SPR0); EnableFM25256; /CS变低 SPDR = 0x03; /写入读命令字 while(SPSR&(1SPIF)=0); /等待SPI发送完毕 SPDR = ucHighAddress; /写入高位地址 while(SPSR&(1SPIF)=0); /等待SPI发送完毕 SPDR = (unsigned char) (uiSourceAddress & 0x00FF); /写入低位地址 while(SPSR&(1 0;uiNum-) SPDR = 0; /为了读取数据，需要写入数据，发送SCK，故写入0 while(SPSR&(10;/返回值：所发送数据的检验和unsigned char ReadFM25L256SendToUsart(unsigned int uiSourceAddress, unsigned int uiNum) unsigned char ucHighAddress = uiSourceAddress 8; /高位地址 unsigned char ucTemp; EnableFM25256; /CS变低 SPCR = (1SPE)|(1MSTR)|(0CPOL)|(0SPR0); SPDR = 0x03; /写入读命令字 while(SPSR&(1SPIF)=0); /等待SPI发送完毕 SPDR = ucHighAddress; /写入高位地址 while(SPSR&(1SPIF)=0); /等待SPI发送完毕 SPDR = (unsigned char) (uiSourceAddress & 0x00FF); /写入低位地址 while(SPSR&(1 0;uiNum-) SPDR = 0; /为了读取数据，需要写入数据，发送SCK，故写入0 while(SPSR&(1 8; /高位地址 EnableFM25256; /CS变低 SPCR = (1SPE)|(1MSTR)|(0CPOL)|(0SPR0); SPDR = 0x06; /写入写使能WREN命令 while(SPSR&(1SPIF)=0); /等待SPI发送完毕 DisableFM25256; /CS变高 _delay_us(50); EnableFM25256; /CS变低 SPDR = 0x02; /写入写命令字 while(SPSR&(1SPIF)=0); /等待SPI发送完毕 SPDR = ucHighAddress; /写入高位地址CI-FM25H20-DG while(SPSR&(1SPIF)=0); /等待SPI发送完毕 SPDR = (unsigned char) (uiDestinationAddress & 0x00FF); /写入低位地址 while(SPSR&(1 0;uiNum-) SPDR = *pSource; /发送要写入的数据 while(SPSR&(1SPIF)=0); /等待SPI发送完毕 pSource+; DisableFM25256; /CS变高/FM25L256自检子程序/返回值：0:自检成功，1：自检失败unsigned char FM25L256SelfTest(void) unsigned int uiTemp; uiTemp = ReadInt(FM25L256_CHECK_ADDRESS); if (uiTemp = 0xA55A) /判断是否存储器是否能读 return (0); else /存储器不能读或未进行出厂设置 SetDefault(); /出厂设置，函数定义在System.c WriteInt (0xA55A,FM25L256_CHECK_ADDRESS); /设置已出厂设置标志 uiTemp = ReadInt(FM25L256_CHECK_ADDRESS); if (uiTemp = 0xA55A) /若读取正确返回0 return (0); else return (1); /若仍读取错误则返回1 /*/测试FM25L256子程序void VerifyFM25L256(void) unsigned int uiCheckAddress = 0; unsigned int uiMemoryNum = ReadInt(MEMORY_ADDRESS); unsigned int uiOldData; unsigned char ucError = 0; unsigned char ucSendChkSum; unsigned char i; union tagSTOREINT siUsartDataInt; /整型共用体，将整形分解为字节型存取，在DataStore.h中定义 for (;uiCheckAddress uiMemoryNum;uiCheckAddress += 2) uiOldData = ReadInt(uiCheckAddress); /保存原有数据 WriteInt (0xA55A,uiCheckAddress); /写入测试字/ _delay_cycles(10); if (ReadInt(uiCheckAddress) != 0xA55A) WriteInt (uiOldData,uiCheckAddress); /写回原有数据 SendChar(COMM_FRAME_START); /发送反馈帧头 ucSendChkSum = COMM_FRAME_START; /计算反馈帧的校验和 SendChar(VERIFY_FRAM_COMMAND); /发送命令字 ucSendChkSum += VERIFY_FRAM_COMMAND; /计算反馈帧的校验和 siUsartDataInt.uiStoreInt = uiMemoryNum; /发送地址总长 for (i = 0;i = 1;i+) SendChar(siUsartDataInt.ucStoreBuffi); ucSendChkSum += siUsartDataInt.ucStoreBuffi; siUsartDataInt.uiStoreInt = uiCheckAddress; /发送测试地址 for (i = 0;i = 1;i+) SendChar(siUsartDataInt.ucStoreBuffi); ucSendChkSum += siUsartDataInt.ucStoreBuffi; SendChar(FINISHED_SEND); ucSendChkSum += FINISHED_SEND; /发送结束上传标志 SendChar(ucSendChkSum); /发送检验和 SendChar(COMM_FRAME_END); /发送帧尾 ucError = 1; /置错误标志 break; /退出循环 else if (uiCheckAddress + 2) % 1024) = 0) & (uiCheckAddress + 2) uiMemoryNum) WriteInt (uiOldData,uiCheckAddress); /写回原有数据 SendChar(COMM_FRAME_START); /发送反馈帧头 ucSendChkSum = COMM_FRAME_START; /计算反馈帧的校验和 SendChar(VERIFY_FRAM_COMMAND); /发送命令字 ucSendChkSum += VERIFY_FRAM_COMMAND; /计算反馈帧的校验和 siUsartDataInt.uiStoreInt = uiMemoryNum; /发送地址总长 for (i = 0;i = 1;i+) SendChar(siUsartDataInt.ucStoreBuffi); ucSendChkSum += siUsartDataInt.ucStoreBuffi; siUsartDataInt.uiStoreInt = uiCheckAddress + 2; /发送测试完成地址 for (i = 0;i = 1;i+) SendChar(siUsartDataInt.ucStoreBuffi); ucSendChkSum += siUsartDataInt.ucStoreBuffi; SendChar(GO_ON_SEND); ucSendChkSum += GO_ON_SEND; /发送结束上传标志 SendChar(ucSendChkSum); /发送检验和 SendChar(COMM_FRAME_END); /发送帧尾/ _watchdog_reset(); /复位看门狗 WriteInt (uiOldData,uiCheckAddress); /写回原有数据 if (ucError = 0) SendChar(COMM_FRAME_START); /发送反馈帧头 ucSendChkSum = COMM_FRAME_START; /计算反馈帧的校验和 SendChar(VERIFY_FRAM_COMMAND); /发送命令字 ucSendChkSum += VERIFY_FRAM_COMMAND; /计算反馈帧的校验和 siUsartDataInt.uiStoreInt = uiMemoryNum; /发送地址总长 for (i = 0;i = 1;i+) SendChar(siUsartDataInt.ucStoreBuffi); ucSendChkSum += siUsartDataInt.ucStoreBuffi; siUsartDataInt.uiStoreInt = uiCheckAddress; /发送测试完成地址 for (