【创龙TMS320C665x开发板试用】+10 基于Platform平台Nandflash开发（4总结）

2016-3-21 15:46:57 3903

0 基于Platform平台Nandflash开发，详细的解释如前几篇文档所述。 1.判断操作是否完成(NandWaitRdy(EMIF16_NAND_RESET_tiMEOUT) != SUCCESS) static uint32_t NandWaitRdy(uint32_t in_timeout) { uint32_t count = 0; do { platform_delay(1); if ((CSL_FEXT(hEmif16Cfg->NANDFSR, EMIF16_NANDFSR_WAITSTAT) & 1) == 1) { break; } count ++; } while (count < in_timeout); if (count >= in_timeout) return FAIL; else return SUCCESS; } 复制代码 2.发送操作指令 NandCmdSet(NAND_STATUS); static void NandCmdSet(uint32_t cmd) { /* 8-bit NAND / uint8_t cle_addr = (uint8_t ) NAND_CMD_ADDR; cle_addr = cmd; } 复制代码 3.读状态寄存器操作 NandReadDataByte(&status); static void NandReadDataByte(uint8_t* puchValue) { /8-bit NAND/ uint8_t data_addr = (uint8_t ) NAND_DATA_ADDR; puchValue = data_addr; } 复制代码 4.设置坏块指针列表 gDeviceNand.bblist = (uint8_t )&gDeviceNandBBlist; 5.获取Nandflash具体信息 NandGetDetails(p_info) uint32_t NandGetDetails(PLATFORM_DEVICE_info pNandInfo) { uint32_t i; uint32_t uiStatus; NAND_ADDR address; /* Clear the Information / pNandInfo->device_id = pNandInfo->manufacturer_id = 0x0; / Read manufacturer ID and device ID / NandCmdSet(NAND_RDID); platform_delay(10); NandAleSet(NAND_ADD_00H); platform_delay(10); / Always reading the ID alone in 8 bit mode / NandReadDataByte((uint8_t )&pNandInfo->manufacturer_id); NandReadDataByte((uint8_t )&pNandInfo->device_id); / Get the bad block table / address.uiPageAddr = 0; address.uiColumnAddr = 0; for (i=0; i < BLOCKS_PER_DEVICE; i++) { address.uiBlockAddr = i; / Clear the Spare Area / memset(nandPageBuf, 0, SPARE_BYTES_PER_PAGE); // Read the spare area in to buffer uiStatus = NandReadSpareArea(pNandInfo, address.uiBlockAddr, address.uiPageAddr, nandPageBuf); if(uiStatus != SUCCESS) { return PLATFORM_ERRNO_NANDBBT; } else { // Success in reading the NAND spare area if (nandPageBuf[pNandInfo->bboffset] == 0xFF) { pNandInfo->bblist[i] = 0xFF; } else { pNandInfo->bblist[i] = 0x00; } } } return SUCCESS; } 复制代码* 5.1 获取Nandflash具体数据信息的结构体为 typedef struct { int32_t manufacturer_id; / int32_t device_id; / PLATFORM_DEVICE_TYPE type; / int32_t width; / int32_t block_count; / int32_t page_count; / int32_t page_size; / int32_t spare_size; / PLATFORM_DEVHANDLE handle; / int32_t bboffset; / uint32_t column; / uint32_t flags; / void internal; /* uint8_t bblist; /* } PLATFORM_DEVICE_info; 复制代码注释：a.读取数据 NandReadDataByte((uint8_t )&pNandInfo->manufacturer_id); NandReadDataByte((uint8_t )&pNandInfo->device_id); static void NandReadDataByte(uint8_t* puchValue) { /8-bit NAND/ uint8_t data_addr = (uint8_t ) NAND_DATA_ADDR; puchValue = data_addr; } 复制代码 b.计算Flash容量 (p_device->block_count * p_device->page_size * p_device->page_count) / 1024 / 1024); c.输出Flash坏块地址（注意：按照Nandflash原理坏块Block只要有一页是坏的话，那整个Block就是坏的。同时在操作读写操作时，必须先检查坏块，并跳过这个Block） for(i = 0; i < p_device->block_count; i++) { if(p_device->bblist[i] == 0x00) { platform_write("%d n", i); } } 复制代码 0 nandflash.zip 6.16 KB , 下载次数: 3
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jinyi7016 · 2016-3-21 19:51:18 沙发本帖最后由 jinyi7016 于 2016-3-21 03:59 编辑 Platform库是包含在哪个包里啊，怎么没找到啊。你是不是用的pdk的5567的那个库？找到5566的库了没？

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