m25p64.rar_m25p64

/**--------------File Info------------------------------------------------------------------------------- ** File name: M25P64Drv.c ** Descriptions: SPI下M25P64操作函数库 ** **------------------------------------------------------------------------------------------------------ ********************************************************************************************************/ #include "drivehead.h" #include "ssi.h" #include "gpio.h" #include "sysctl.h" #include "includes.h" #include "NetInclude.h" #include "m25p64.h" #include "audio.h" #include "netserver.h" #include "flash.h" #include "process.h" #include "protocol.h" #define Dummy_Byte 0xA5 #define SDC_SSI_BASE SSI0_BASE #define SDC_SSI_SYSCTL_PERIPH SYSCTL_PERIPH_SSI0 // GPIO for SSI pins #define SDC_GPIO_PORT_BASE GPIO_PORTA_BASE #define SDC_GPIO_SYSCTL_PERIPH SYSCTL_PERIPH_GPIOA #define SDC_SSI_CLK GPIO_PIN_2 #define SDC_SSI_TX GPIO_PIN_5 #define SDC_SSI_RX GPIO_PIN_4 #define SDC_SSI_PINS (SDC_SSI_TX | SDC_SSI_RX | SDC_SSI_CLK) // GPIO for M25P64 chip select #define MP_CS_PORT_BASE GPIO_PORTA_BASE #define MP_CS_SYSCTL_PERIPH SYSCTL_PERIPH_GPIOA #define MP_CS GPIO_PIN_3 #define MPCE_Low() GPIOPinWrite(MP_CS_PORT_BASE,MP_CS,0) #define MPCE_High() GPIOPinWrite(MP_CS_PORT_BASE,MP_CS,MP_CS) // GPIO for FM25CL64 chip select #define FM_CS_PORT_BASE GPIO_PORTF_BASE #define FM_CS_SYSCTL_PERIPH SYSCTL_PERIPH_GPIOF #define FM_CS GPIO_PIN_0 #define FMCE_Low() GPIOPinWrite(FM_CS_PORT_BASE,FM_CS,0) #define FMCE_High() GPIOPinWrite(FM_CS_PORT_BASE,FM_CS,FM_CS) FIL Filefops; /* 移植本软件包时需要修改以下的函数或宏 */ static void Send_Byte(INT8U data); static INT8U Get_Byte(void); static void MP_WaitForWriteEnd(void); static void MP_FLASH_PageWrite(INT8U* pBuffer, INT32U WriteAddr, INT16U NumByteToWrite); static void Init_RecordPt(void); void PutRecordInfo(RecordSaveStruct_t *PRecord); int GetRecordInfo(RecordSaveStruct_t *PRecord); /******************************************************************************* * Function Name : M25P64_RD * Description : Reads a block of data from the MP FLASH. * Input : - pBuffer : pointer to the buffer that receives the data read * from the FLASH. * - ReadAddr : FLASH's internal address to read from. * - NumByteToRead : number of bytes to read from the FLASH. * Output : None * Return : if(OK) return 0; * else return -1; *******************************************************************************/ int M25P64_RD(INT32U ReadAddr, INT32U NumByteToRead, void * pBuffer) { INT8U *RcvBufPt = (INT8U *)pBuffer; INT8U err; if ((ReadAddr + NumByteToRead > MAX_ADDR)||(NumByteToRead == 0)) { return (-1); } OSSemPend(SemSPI,0,&err); /* Select the FLASH: Chip Select low */ MPCE_Low(); /* Send "Read from Memory " instruction */ Send_Byte(FCMD_READ); /* Send ReadAddr high nibble address byte to read from */ Send_Byte((ReadAddr & 0xFF0000) >> 16); /* Send ReadAddr medium nibble address byte to read from */ Send_Byte((ReadAddr & 0xFF00) >> 8); /* Send ReadAddr low nibble address byte to read from */ Send_Byte(ReadAddr & 0xFF); while(NumByteToRead--) /* while there is data to be read */ { /* Read a byte from the FLASH */ *RcvBufPt = Get_Byte(); /* Point to the next location where the byte read will be saved */ RcvBufPt++; } /* Deselect the FLASH: Chip Select high */ MPCE_High(); OSSemPost(SemSPI); return (0); } /************************************************************************ ** 函数名称:M25P64_RdID ** 函数功能:M25P64的读ID函数,可选择读ID和读数据操作 ** 入口参数: ** type: 读取的数据的类型 ** INT32U* RcvbufPt:存储ID变量的指针 ** 出口参数: ** 操作成功则返回0 ** 失败则返回 -1 ************************************************************************/ int M25P64_RdID(INT32U type,INT32U* RcvbufPt) { INT32U temp = 0; MPCE_Low(); switch(type) { case FLASH_RDID: Send_Byte(FCMD_RDID); /* 发送读JEDEC */ temp = (temp | Get_Byte()) << 8;/* 接收数据*/ temp = (temp | Get_Byte()) << 8; temp = (temp | Get_Byte()); /* 在本例中,temp的值应为0xBF2541 */ break; case FLASH_RDSR: Send_Byte(FCMD_RDSR); temp = Get_Byte(); break; case FLASH_RES: Send_Byte(FCMD_RES); Send_Byte(0xff); //Send 3 dump. Send_Byte(0xff); Send_Byte(0xff); temp = Get_Byte(); break; default: MPCE_High(); *RcvbufPt = 0; return -1; } MPCE_High(); *RcvbufPt = temp; return (0); } /************************************************************************ ** 函数名称:M25P64_WR ** 函数功能:M25P64的写函数，可写1个和多个数据到指定地址 ** 入口参数: ** INT32U Dst：目标地址,范围 0x0 - MAX_ADDR（MAX_ADDR = 0x7FFFFF） ** INT32U SndBytes:发送数据字节数 ** INT8U *buff:发送的数据 ** 出口参数:操作成功则返回写入的字节数,失败则返回 -1; ** 注 意:若某功能下,某一入口参数无效,可在该入口参数处填Invalid，该参数将被忽略 ************************************************************************/ int M25P64_WR(INT32U Dst,INT32U SndBytes,const void *wbuff) { int i; const INT8U *buff = (const INT8U *)wbuff; if(SndBytes > 0x100 || SndBytes == 0) return -1; if(Dst > MAX_ADDR) return -1; MPCE_Low(); Send_Byte(FCMD_READ); // 发送读命令 Send_Byte(((Dst & 0xFF0000) >> 16)); // 发送地址信息:该地址由3个字节组成 Send_Byte(((Dst & 0xFF00) >> 8)); Send_Byte(Dst & 0xFF); for(i = Dst; i< Dst + SndBytes; i++) { if(0xff != Get_Byte()) { DiagPrintf(Uart0Dsc,"Read add=%d_%derror\r\n",Dst,i); MPCE_High(); return -1; } } MPCE_High(); i = 0; MPCE_Low(); Send_Byte(FCMD_WREN); /* 发送写使能命令 */ MPCE_High(); MPCE_Low(); Send_Byte(FCMD_PP); /* 发送字节数据烧写命令 */ Send_Byte(((Dst & 0xFF0000) >> 16)); /* 发送3个字节的地址信息 */ Send_Byte(((Dst & 0xFF00) >> 8)); Send_Byte(Dst & 0xFF); while(i < SndBytes) { Send_Byte(buff[i]); /* 发送被烧写的数据 */ i++; if(0 == ((Dst + i) & 0xff)) /*只能在同一页内写，如果超出，返回实际写入的字节数*/ { break; } } SndBytes = i; MPCE_High(); MP_WaitForWriteEnd(); /* 一直等待，直到芯片空闲 */ MPCE_Low(); Send_Byte(FCMD_READ); // 发送读命令 Send_Byte(((Dst & 0xFF0000) >> 16)); // 发送地址信息:该地址由3个字节组成 Send_Byte(((Dst & 0xFF00) >> 8)); Send_Byte(Dst & 0xFF); for (i = 0; i < SndBytes; i++) { if(buff[i] != Get_Byte()) { MPCE_High(); DiagPrintf(Uart0Dsc,"write add=%d_%derror\r\n",Dst,i); return -1; } } MPCE_High(); return (i); } /************************************************************************ ** 函数名称:M25P64_Erase ** 函数功能:根据指定的扇区号选取最高效的算法擦除 ** 入口参数: ** INT32U sec1：起始族号,范围(0 ～ 128) ** INT32U sec2：终止族号,范围(0 ～ 128) ** 出口参数: ** 操作成功则返回0 ** 失败则返回-1 ************************************************************************/ int M25P64_Erase(INT32U sec1, INT32U sec2) { INT32U SecnHdAddr; /* 检查入口参数 */ if ((sec1 > SECTOR_MAX)||(sec2 > SECTOR_MAX)) { return (-1); } #if 0 MPCE_Low(); Send_Byte(FCMD_RDSR); /* 发送读状态寄存器命令 */ temp1 = Get_Byte(); /* 保存读得的状态寄存器值 */ MPCE_High(); #endif MPCE_Low(); Send_Byte(FCMD_WREN); /* 使状态寄存器可写 */ MPCE_High(); MPCE_Low(); Send_Byte(FCMD_WRSR); /* 发送写状态寄存器指令 */ Send_Byte(0x00); /* 清0BPx位，使Flash芯片全区可写 */ MPCE_High(); MP_WaitForWriteEnd(); /* 如果用户输入的起始扇区号大于终止扇区号，则在内部作