物聯網行業中小型嵌入式文件系統詳解以及使用
一 概述
?在嵌入式系統使用過程中，為了方便數據的存儲，我們加入了串行的外部Flash(SPI通信)。在使用存儲的時候，如需要記錄一個字符串“奇跡物聯Bloom OS”，我們可以把這些文字轉化成 ASCII 碼，存儲在數組中，然后調用寫函數，把數組內容寫入到Flash芯片的指定地址上，在需要的時候從該地址把數據讀取出來，再對讀出來的數據以 ASCII 碼的格式進行解讀。
我們可以發現有幾個問題：
（1）難以記錄有效數據的位置；
（2）難以確定存儲介質的剩余空間；
（3）不明確應該以何種格式來解讀數據。
直接存儲數據的方式對于小容量的存儲介質如 EEPROM 還可以接受，但對于 SPI Flash 芯片或者 SD 卡之類的大容量設備，我們需要一種高效的方式來管理它的存儲內容。
ASCII表示一個字符需要占用七位二進制數，最左邊為0，所以要占用一個字節。
二 文件系統原理
文件系統是對數據進行管理的方式，使用文件系統可以有效的管理存儲介質（Flash,EEPROM,SD卡,磁盤等）；
?使用文件系統時，它為了存儲和管理數據，在存儲介質建立了一些組織結構這些結構包括操作系統引導區、目錄和文件。常見的windows下的文件系統格式包括FAT32、NTFS、exFAT。在使用文件系統前，要先對存儲介質進行格式化。格式化時會在存儲介質上新建一個文件分配表和目錄。這樣，文件系統就可以記錄數據存放的物理地址，剩余空間。
?使用文件系統時，數據都以文件的形式存儲。寫入新文件時，先在目錄中創建一個文件索引，它指示了文件存放的物理地址，再把數據存儲到該地址中。當需要讀取數據時，可以從目錄中找到該文件的索引，進而在相應的地址中讀取出數據。具體還涉及到邏輯地址、簇大小、不連續存儲等一系列輔助結構或處理過程,文件系統的存在使存取數據時，不再是簡單地向某物理地址直接讀寫，而是要遵循它的讀寫格式。如經過邏輯轉換，一個完整的文件可能被分開成多段存儲到不連續的物理地址，使用目錄或鏈表的方式來獲知下一段的位置。
關于內存扇區、塊、簇的基本概念：
?扇區（sector）：flash可操作的最小單元，通常指我們擦除的最小單元大小，以sdnand舉例，通常最小為512Byte
?塊（block） 以及簇（cluster）：其實這是兩個相同的概念，只是由于歷史原因，在不同系統上的不同稱呼，在windows中稱簇，而在linux中稱塊。一個簇/塊由多個扇區組成，由于一個扇區的空間較小，因此文件系統通過會將多個扇區組合在一起形成一個簇，并以簇為單位進行讀寫操作！一個簇通常可以由 2、4、8、… 、2的n次方個扇區組成。
目錄和文件分配表的概念
目錄：告訴我文件的各個屬性，比如名字，大小，時間，讀寫屬性等等；
文件分配表：告訴我們這個文件的存儲地方，怎么讀取這個文件，如下圖從目錄讀完讀第一個扇區，第一個讀完讀取第二個……等等。
文件系統的空間示意圖：存儲了A.TXT，B.TXT，C.TXT文件
目錄示意圖：記錄了文件的開始簇位置、大小等信息
文件分配表：文件 a.txt 我們根據目錄項中指定的 a.txt 的首簇為 2，然后找到文件分配表的第 2 簇記錄，上面登記 的是 3，就能確定下一簇是 3。找到文件分配表的第 3 簇記錄，上面登記的 是 4，就能確定下一簇是 4…直到指到第 11 簇，發現下一個指向是 FF，就是結束。文件便讀取完畢。
刪除B.TXT文件，創建D.TXT文件后的空間示意圖
刪除B.TXT文件，創建D.TXT文件后的目錄示意圖
刪除B.TXT文件，創建D.TXT文件后的文件分配表示意圖
三 如何選擇一個合適的小型嵌入式文件系統
參考小型文件系統如何選擇？FatFs和LittleFs優缺點比較
四 文件系統軟件使用
1 Gitee鏈接地址
組件位于amaziot_bloom_os_sdklibrariesamxtuam_file.c
Gitee源碼地址：https://gitee.com/ning./hongdou
Github源碼地址：https://github.com/ayumid/hongdou
2 應用層組件功能介紹
文件組件提供了一種存儲數據的方式，用戶可以參考組件，修改組件中數據內容，來實現自己項目的數據保存工作。
數據保存形式最好是封成一個結構體，寫文件直接寫結構體指針就可以了。結構體內保存各種類型，需要斷電保存的數據，再次上電，可以保留之前的一些設置等。
3 代碼講解
1 dtu_get_file_ctx
功能：該函數用于，其它軟件模塊使用文件模塊相關資源時，獲取資源句柄。
參數：無
返回值：文件緩沖區指針
示例：
dtu_file_ctx = dtu_get_file_ctx();
2 dtu_init_trans_conf
功能：該函數用于，初始化云服務器信息到文件。
參數：無
返回值：無
示例：
//init write tans_file dtu_init_trans_conf();
3 dtu_trans_conf_file_init
功能：該函數用于，信息存儲文件不存在，創建文件；存在，讀取文件。
參數：無
返回值：無
示例：
dtu_trans_conf_file_init();
4 dtu_trans_conf_file_read
功能：該函數用于，讀文件，讀完后關閉文件，將文件信息拷貝到全局存儲變量中。
參數：無
返回值：無
示例：
dtu_trans_conf_file_read(1);
5 dtu_trans_conf_file_write
功能：該函數用于，打開文件，寫入文件后關閉文件。
參數：
| 參數 | 釋義 |
| st_dtu_file | 文件地址 |
返回值：無
示例：
//寫入文件 dtu_trans_conf_file_write(dtu_file_ctx);
4 Demo實戰
4.1 創建一個Demo
復制5.2_file示例工程，到同一個文件夾下，修改文件名為20.1_file_xtu，如圖：
4.2 修改makefile
增加文件組件所在目錄頭文件路徑，和源文件路徑，如圖：
4.3 增加頭文件
使用代碼編輯器，將新建的工程文件加入代碼編輯器中，打開main.c，修改main.c，加入am.h頭文件，如圖：
4.4 修改代碼
在Phase2Inits_exit 調用文件組件提供的對外API，如圖：
4.5 編譯
在SDK根目錄打開命令行，輸入命令.build.bat -l .amaziot_bloom_os_sdksamplelibraries20.1_file_xtu
PS F:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08 λ .build.bat -l .amaziot_bloom_os_sdksamplelibraries20.1_file_xtu 子目錄或文件 outbin 已經存在。 命令語法不正確。 子目錄或文件 buildobj 已經存在。 gnumake: Entering directory `F:/3.asr-b/cat.1-asr1606/1.software/BLOOM_OS_1606_OPENCPU_1191_A08/amaziot_bloom_os_sdk/sample/libraries/20.1_file_xtu' armcc.exe -c --cpu Cortex-R4 --no_unaligned_access -g -O2 --apcs /inter --diag_suppress 2084,1,2,177,188,223,550,1296,2795,6319,9931,9933 --diag_error=warning --gnu --thumb --loose_implicit_cast -DDATA_COLLECTOR_IMPL -DISPT_OVER_SSP -DDIAG_SSP_DOUBLE_BUFFER_USE_DYNAMIC_ALLOCATION -DENV_XSCALE -DL1_DCXO_ENABLED -DLTE_HIGH_MOBILITY_OPTIMIZATION -DRUN_XIP_MODE -DCRANE_Z2 -DCA_LONG_IPC_MSG -DNEZHA3 -DNEZHA3_1826 -DUPGRADE_PLMS -DUPGRADE_PLMS_SR -DLTE_GSMMULTIBCCH -DGPLC_LTE_RSSI_SCAN -DL1V_NEW_RSSI -DUPGRADE_PLMS_3G -DUPGRADE_PLMS_L1 -DUPGRADE_FG_PLMS -DFG_PLMS_URR -DUPGRADE_L1A_FG_PLMS -DUPGRADE_PLMS_STAGE_2 -DUPGRADE_MBCCH -DMULTI_BCCH_READY_IND 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-IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xhoptelephonyci_clientinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xhalBT_deviceinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xhalUARTinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xhopmrdinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xhopdmainc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xsoftutilsoftutilinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xhalSPIinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xpcacwebsocketinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xpcacatnet_srvinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xsoftutilfotacomminc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xaud_swAudioinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xaud_swACM_COMMinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xaud_swaudio_stubsrc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xhopaaminc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xaud_swAudioHALinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xhaldbgshellinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xpcacopencpuinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08amaziot_bloom_os_sdkutils -IF:/3.asr-b/cat.1-asr1606/1.software/BLOOM_OS_1606_OPENCPU_1191_A08/amaziot_bloom_os_sdk/sample/libraries/20.1_file_xtuaminc -IF:/3.asr-b/cat.1-asr1606/1.software/BLOOM_OS_1606_OPENCPU_1191_A08/amaziot_bloom_os_sdk/sample/libraries/20.1_file_xtuatcmdsinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08/amaziot_bloom_os_sdk/librariesamxtu -o buildobj/ext_at_cmds.o F:/3.asr-b/cat.1-asr1606/1.software/BLOOM_OS_1606_OPENCPU_1191_A08/amaziot_bloom_os_sdk/sample/libraries/20.1_file_xtu/atcmds/src/ext_at_cmds.c armcc.exe -c --cpu Cortex-R4 --no_unaligned_access -g -O2 --apcs /inter --diag_suppress 2084,1,2,177,188,223,550,1296,2795,6319,9931,9933 --diag_error=warning --gnu --thumb --loose_implicit_cast -DDATA_COLLECTOR_IMPL -DISPT_OVER_SSP -DDIAG_SSP_DOUBLE_BUFFER_USE_DYNAMIC_ALLOCATION -DENV_XSCALE -DL1_DCXO_ENABLED -DLTE_HIGH_MOBILITY_OPTIMIZATION -DRUN_XIP_MODE -DCRANE_Z2 -DCA_LONG_IPC_MSG -DNEZHA3 -DNEZHA3_1826 -DUPGRADE_PLMS -DUPGRADE_PLMS_SR -DLTE_GSMMULTIBCCH -DGPLC_LTE_RSSI_SCAN -DL1V_NEW_RSSI -DUPGRADE_PLMS_3G -DUPGRADE_PLMS_L1 -DUPGRADE_FG_PLMS -DFG_PLMS_URR -DUPGRADE_L1A_FG_PLMS -DUPGRADE_PLMS_STAGE_2 -DUPGRADE_MBCCH -DMULTI_BCCH_READY_IND -DURR_MRAT_ICS_SEARCH -DUPGRADE_ICS -DMRAT_NAS -DUPGRADE_PLMS_SEARCH_API -DICS_MBCCH -DICS_MBCCH_2G_RSSI -DDIAG_NEWPP -DPHS_SW_DEMO -DPHS_SW_DEMO_TTC -DPHS_SW_DEMO_TTC_PM -DFULL_SYSTEM -D_DDR_INIT_ -D_TAVOR_HARBELL_ -DUPGRADE_ARBEL_PLATFORM -D_TAVOR_B0_SILICON_ -DTDL1C_SPY_ENABLE -DDLM_TAVOR -DTAVOR -DFLAVOR_DUALCORE -DDEBUG_D2_MOR_REG_RESEREVED_ENABLE -D_DIAG_USE_COMMSTACK_ -D_TAVOR_DIAG_ -DPM_DEBUG_MODE_ENABLED -DPM_D2FULL_MODE -DPM_EXT_DBG_INT_ARR -DFEATURE_WB_AMR_PS -DMACRO_FOR_LWG -DHL_LWG -DOPTIMIZE_FOR_2G_BCCH -DPLAT_TEST -D_FDI_USE_OSA_ -DPLAT_USE_THREADX -DLWIP_IPNETBUF_SUPPORT -DCRANE_MCU_DONGLE -DAT_OVER_UART -DPHS_SW_DEMO_TTC_PM -DUPGRADE_LTE_ONLY -DEXT_AT_MODEM_SUPPORT -DLTEONLY_THIN_SINGLE_SIM -DLFS_FILE_SYS -DLFS_FILE_SYS_V2 -DPSM_ENABLE -DNO_PAHO_MQTT -DNO_XML -DNO_LWM2M -DREMOVE_MBEDTLS -DNO_AT_NET -DCRANE_SD_NOT_SUPPORT -DNTP -DYMODEM_EEH_DUMP -DENABLE_DM_LTEONLY -DLTEONLY_THIN -DNO_EXTEND_MY_Q_AT -DNOT_SUPPORT_HTTPS -DNOT_SUPPORT_PM813 -DCRANEL_4MRAM -DREMOVE_PB -DUART_NEW_VERSION -DREMOVE_MEP -DREMOVE_SMS -DREMOVE_ENVSIM -DAPN_INCODE -DLTEONLY_THIN_SINGLE_SIM_2MFLASH -DASR160X_OPENCPU_FEATURE -DENABLE_UART3_FEATRUE -DENABLE_UART4_FEATRUE -DYUGE_MBEDTLS_3_2_1 -DENABLE_MAC_TX_DATA_LOGGING -DDISABLE_NVRAM_ACCESS -DINTEL_UPGRADE_EE_HANDLER_SUPPORT -DLTE_W_PS -DL1_DUAL_MODE -DUPGRADE_HERMON_DUAL -DINTEL_UPGRADE_DUAL_RAT -DINTEL_UPGRADE_GPRS_CIPHER_FLUSH -DUPGRADE_ENHANCED_QUAD_BAND -DINTEL_2CHIP_PLAT -DI_2CHIP_PLAT -DUPGRDE_TAVOR_COMMUNICATION -DRUN_WIRELESS_MODEM -DFLAVOR_DDR12MB_GB1MB5 -DFEATURE_SHMEM -DACIPC_ENABLE_NEW_CALLBACK_MECHANISM -DRELIABLE_DATA -DMAP_NSS -DTV_FNAME=""SW_PLATFORM=PMD2NONE PHS_SW_DEMO PHS_SW_DEMO_PM SRCNUCLEUS FULL_SYSTEM NOACRTC PDFLT PLAT_TEST PV2 DIAGOSHMEM NVM WITHL1V"" -DTV_FDESC=""SW_DESCRIPTION="" -DENABLE_ACIPC -D_DATAOMSL_ENABLED_ -DUSB_CABLE_DETECTION_VIA_PMIC -DMIPS_TEST -DMIPS_TEST_RAM -DFLAVOR_DIET_RAM -DNVM_INCLUDE -DMSL_INCLUDE -DMSL_POOL_MEM -DNO_AUDIO -DOSA_QUEUE_NAMES -D_DIAG_DISABLE_USB_ -DOSA_NUCLEUS -DOSA_USED -DPM_D2NONE_MODE -DCRANE_SOC_TEMPERATURE_SENSOR -DL1_SW_UPDATE_FOR_DIGRF -DPHS_L1_SW_UPDATE_R7 -DUPGRADE_LTE -DFRBD_CALIB_NVM -DFRBD_AGC_CALIB -DFRBD_FDT_CALIB -DHSPA_MPR -DCAPT_PARAMS_OPTIMIZE -DL1_WB_R99_ONLY -DL1V_WB_R99_ONLY -DINTERGRATED_RF_SUPPORT -DL1_RX_DIV_SUPPORT -DENABLE_OOS_HANDLING -DTAVOR_D2_WB_L1_SUPPORT -DL1_DDR_HIGH_FREQ -DUPGRADE_DIGRF3G_SUPPORT -DW_PS_PLUS_G_PAGING -D"NO_APLP=0" -DINTEL_UPGRADE_UNIFIED_VOICE_TASK -DINTEL_UPGRADE_R99 -DAPLP_SPY_ENABLE -D__TARGET_FEATURE_DOUBLEWORD -DWHOLE_UMTS_STACK -DUSE_TTPCOM_CSR_BLUETOOTH_AUDIO_GAIN_CONTROL -DL1_UPGRADE_R5 -DUPGRADE_EDGE -DUPGRADE_R4_FS1 -DINTEL_UPGRADE_GSM_CRL_IF -DUPGRADE_EGPRS_M -DINTEL_UPGRADE_EGPRS_M -DINTEL_UPGRADE_RF_PARAMS_IN_CF_TDS -DINTEL_UPGRADE_2SAMPLES_PER_SYMBOL -D"GPRS_MULTISLOT_CLASS=12" -D"EGPRS_MULTISLOT_CLASS=12" -DMARVELL_UPGRADE_BSIC_REDESIGN -DMSL_INCLUDE -DINTEL_HERMON_SAC -DCRANE_CUST_BUILD -DL1_SW_UPDATE_FOR_DIGRF -DFLAVOR_COM -DSILICON_PV2 -DSILICON_SEAGULL -DSILICON_TTC_CORE_SEAGULL -DPCAC_INCLUDE -Otime -DBUILD_DATE=""11 17 2023"" -DBUILD_TIME=""15:05:23"" -Iatcmdsinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xhoptelephonyyugeinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xhalUARTinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xhalcoreinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xhalPMUinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xhalGPIOinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xosposixinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xdiagdiag_logicsrc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xcswSysCfginc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xcswplatforminc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xenvwin32inc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xcswBSPinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xcswplatformdev_platbuild -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xososainc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xosthreadxinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xosnu_xscaleinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xpcacpsminc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xpcachttpclientsrc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xdiagdiag_logicinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xhoptimerinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xhopintcinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xcswPMinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xhoppminc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xsoftutilTickManagerinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xhopBSPinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xhoptelephonyatcmdsrvinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xhoptelephonyatparserinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xhoptelephonysdkinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xpcachttpclientinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xpcacciinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xpcaclwipv4v6srcinclude -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xpcaclwipv4v6srcincludearch -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xpcaclwipv4v6srcincludeipv4 -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xpcaclwipv4v6srcincludeipv6 -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xpcaclwipv4v6srcincludelwip -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xpcaclwipv4v6srcincludenetif -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xhopmmi_matinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xtavorArbelinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xtavorenvinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xhoptelephonymodeminc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xpcacdusterinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xpcacfotainc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xhalI2Cinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xhalACIPCinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xsoftutilfatsysflash -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xsoftutilFDIsrcINCLUDE -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xhalMMUinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xsoftutilFDIsrcFDI_ADD -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xsoftutilFDIsrcFM_INC -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xsoftutilfatsysfshdr -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xsoftutillittlefsinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xpcacttsinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xpcacdialinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xsoftutilcsw_memoryinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xhoputilitiesinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xhopcommpminc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xsoftutilnvminc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xsoftutilEEhandlerinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xsoftutilEEhandlersrc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xhopRTCinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xhoptelephonyci_clientinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xhalBT_deviceinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xhalUARTinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xhopmrdinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xhopdmainc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xsoftutilsoftutilinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xhalSPIinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xpcacwebsocketinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xpcacatnet_srvinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xsoftutilfotacomminc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xaud_swAudioinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xaud_swACM_COMMinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xaud_swaudio_stubsrc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xhopaaminc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xaud_swAudioHALinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xhaldbgshellinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08includeasr160xpcacopencpuinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08amaziot_bloom_os_sdkutils -IF:/3.asr-b/cat.1-asr1606/1.software/BLOOM_OS_1606_OPENCPU_1191_A08/amaziot_bloom_os_sdk/sample/libraries/20.1_file_xtuaminc -IF:/3.asr-b/cat.1-asr1606/1.software/BLOOM_OS_1606_OPENCPU_1191_A08/amaziot_bloom_os_sdk/sample/libraries/20.1_file_xtuatcmdsinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08/amaziot_bloom_os_sdk/librariesamxtu -o buildobj/am_file.o F:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08/amaziot_bloom_os_sdk/libraries/am/xtu/am_file.c armlink.exe buildobj/main.o buildobj/ext_at_cmds.o buildobj/ext_at_controller.o buildobj/am_file.o -o F:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08outbinArbel_PMD2NONE_40M.axf --via F:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08prebuilt_1606lArbel_PMD2NONE_targ_objliblist.txt --elf --scatter F:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08prebuilt_1606lCrane_DS_4M_Ram_2M_Flash_XIP_CIPSRAM_Common_SingleSIM.sct --predefine="-DLTEONLY_THIN_SINGLE_SIM" --map --symbols --info sizes,totals --list F:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08outbinArbel_PMD2NONE_40M.map --keep init.o(Header) --keep init.o(Vectors) --diag_suppress 6312,6314,6319,6329 --feedback F:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08outfeedbackLinkOptLteonlyThin_SingleSim_NoSMS.txt F:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08toolsbuildimage_1606l.bat SDK_PROD_TYPE : [DM] SDK_CUST_SKU : [THIN_SINGLE_SIM_NO_SMS] SDK_PS_MODE : [LTEONLY] SDK_CHIP_VER : [Z2A0] SDK_OS_TYPE : [TX] Platform Convertion Tools v4.01 with PS option extension Convertion done! |INPUT |outbincp_1606L.bin |MARK |NAME |EXEADDR .LOADADDR.LENGTH .CPZLADDR|COMPRESS STASTIC | |--------|--------|--------.--------.--------.--------|------------------------------| |This Is LteOnly 4M| |RW_CPZ_1|DDR_RW_ |7e11c000.80064154.0000cdc4.80065000|0000cdc4->00003000 |This Is LteOnly 4M| |RW_CPZ_2|PS_NCAH |7e388000.80070f18.00001300.80068000|00001300->00001000 |This Is LteOnly 4M| |RW_CPZ_3|ITCM |7e3dac00.80072218.0000f51c.80069000|0000f51c->0000a000 |This Is LteOnly 4M| |RW_CPZ_4|CODE_PS |7e1ad000.80081734.0002fc58.80073000|0002fc58->0001e000 |This Is LteOnly 4M| |RW_CPZ_5|CODEPSB |7e1df000.800b138c.000339c0.80091000|000339c0->0001b000 |This Is LteOnly 4M| |RW_CPZ_6|CODEPSC |7e216000.800e4d4c.000323ec.800ac000|000323ec->0001b000 |This Is LteOnly 4M| |RW_CPZ_7|CODEPSD |7e24c000.80117138.00028d88.800c7000|00028d88->0001a000 |This Is LteOnly 4M| |RW_CPZ_8|CODEPSE |7e27a000.8013fec0.0002e310.800e1000|0002e310->0001a000 |This Is LteOnly 4M| |RW_CPZ_9|CODEPSF |7e2ac000.8016e1d0.0001c948.800fb000|0001c948->00011000 |This Is LteOnly 4M| |RW_CPZ_A|CODE_PL |7e2cd000.8018ab18.0002f914.8010c000|0002f914->0001e000 |This Is LteOnly 4M| |RW_CPZ_B|CODEPLB |7e2fd000.801ba42c.00038d38.8012a000|00038d38->00021000 |This Is LteOnly 4M| |RW_CPZ_C|CODEPLC |7e337000.801f3164.000268d4.8014b000|000268d4->00012000 |--------|--------|--------.--------.--------.--------|------------------------------| | | 0x00202a38 -> 0x00146000| | | 2.010(MB) -> 1.273(MB)| |------------------------------------------------------------------------------------| cp_1606L.axf cp_1606L.bin cp_1606L.map gnumake: Leaving directory `F:/3.asr-b/cat.1-asr1606/1.software/BLOOM_OS_1606_OPENCPU_1191_A08/amaziot_bloom_os_sdk/sample/libraries/20.1_file_xtu' "copy NEZHAC_CP_CNR_MIFI_TX.bin to ./ " 已復制 1 個文件。
4.6 生成固件
參考入門中開發工具，生成工具。
4.7 查看現象
固件下載到模組后，觀察Debug串口現象。如下，
[11-17 15:11:50:973]debug> enter main [11-17 15:11:50:973] [11-17 15:11:51:053]dtu_trans_conf_file_write[235] open file for write OK [11-17 15:12:00:978]heartflag:1 [11-17 15:12:00:978]dtu_trans_conf_file_write[235] open file for write OK [11-17 15:12:10:981]heartflag:2 [11-17 15:12:10:981]dtu_trans_conf_file_write[235] open file for write OK [11-17 15:12:20:979]heartflag:3 [11-17 15:12:20:979]dtu_trans_conf_file_write[235] open file for write OK [11-17 15:12:30:980]heartflag:4 [11-17 15:12:30:980]dtu_trans_conf_file_write[235] open file for write OK [11-17 15:12:40:982]heartflag:5 [11-17 15:12:40:982]dtu_trans_conf_file_write[235] open file for write OK [11-17 15:12:50:982]heartflag:6 [11-17 15:12:50:982]dtu_trans_conf_file_write[235] open file for write OK [11-17 15:13:00:966]heartflag:7 [11-17 15:13:00:966]dtu_trans_conf_file_write[235] open file for write OK [11-17 15:13:10:982]heartflag:8 [11-17 15:13:10:982]dtu_trans_conf_file_write[235] open file for write OK [11-17 15:13:20:982]heartflag:9 [11-17 15:13:20:982]dtu_trans_conf_file_write[235] open file for write OK [11-17 15:13:30:983]heartflag:10 [11-17 15:13:30:983]dtu_trans_conf_file_write[235] open file for write OK [11-17 15:13:40:971]heartflag:11 [11-17 15:13:40:971]dtu_trans_conf_file_write[235] open file for write OK [11-17 15:13:50:982]heartflag:12 [11-17 15:13:50:982]dtu_trans_conf_file_write[235] open file for write OK [11-17 15:14:00:984]heartflag:13 [11-17 15:14:00:984]dtu_trans_conf_file_write[235] open file for write OK [11-17 15:14:10:984]heartflag:14 [11-17 15:14:10:984]dtu_trans_conf_file_write[235] open file for write OK [11-17 15:14:20:986]heartflag:15 [11-17 15:14:20:986]dtu_trans_conf_file_write[235] open file for write OK [11-17 15:14:30:986]heartflag:16 [11-17 15:14:30:986]dtu_trans_conf_file_write[235] open file for write OK [11-17 15:14:40:986]heartflag:17 [11-17 15:14:40:986]dtu_trans_conf_file_write[235] open file for write OK [11-17 15:14:50:986]heartflag:18 [11-17 15:14:50:986]dtu_trans_conf_file_write[235] open file for write OK [11-17 15:15:00:987]heartflag:19 [11-17 15:15:00:987]dtu_trans_conf_file_write[235] open file for write OK [11-17 15:15:10:987]heartflag:20 [11-17 15:15:10:987]dtu_trans_conf_file_write[235] open file for write OK [11-17 15:15:20:989]heartflag:21 [11-17 15:15:20:989]dtu_trans_conf_file_write[235] open file for write OK [11-17 15:15:30:988]heartflag:22 [11-17 15:15:30:988]dtu_trans_conf_file_write[235] open file for write OK
5 總結
根據實驗現象，用戶在實現自己項目中的數據保存業務，可以直接修改當前Demo中結構體里面的變量，移植到項目中就可以了。
注：本文部分內容來源于網絡，如有侵權，請及時聯系我們。
本文章源自奇跡物聯開源的物聯網應用知識庫Cellular IoT Wiki，更多技術干貨歡迎關注收藏Wiki：Cellular IoT Wiki 知識庫（Cellular IoT Wiki 知識庫）
歡迎同學們走進AmazIOT知識庫的世界！
這里是為物聯網人構建的技術應用百科，以便幫助你更快更簡單的開發物聯網產品。
Cellular IoT Wiki初心：
在我們長期投身于蜂窩物聯網 ODM/OEM 解決方案的實踐過程中，一直被物聯網技術碎片化與產業資源碎片化的問題所困擾。從產品定義、芯片選型，到軟硬件研發和測試，物聯網技術的碎片化以及產業資源的碎片化，始終對團隊的產品開發交付質量和效率形成制約。為了減少因物聯網碎片化而帶來的重復開發工作，我們著手對物聯網開發中高頻應用的技術知識進行沉淀管理，并基于 Bloom OS 搭建了不同平臺的 RTOS 應用生態。后來我們發現，很多物聯網產品開發團隊都面臨著相似的困擾，于是，我們決定向全體物聯網行業開發者開放奇跡物聯內部沉淀的應用技術知識庫 Wiki，期望能為更多物聯網產品開發者減輕一些重復造輪子的負擔。
Cellular IoT Wiki沉淀的技術內容方向如下：
奇跡物聯的業務服務范圍：基于自研的NB-IoT、Cat1、Cat4等物聯網模組，為客戶物聯網ODM/OEM解決方案服務。我們的研發技術中心在石家莊，PCBA生產基地分布在深圳、石家莊、北京三個工廠，滿足不同區域&不同量產規模&不同產品開發階段的生產制造任務。跟傳統PCBA工廠最大的區別是我們只服務物聯網行業客戶。
連接我們，和10000+物聯網開發者一起 降低技術和成本門檻
讓蜂窩物聯網應用更簡單~~
哈哈你終于滑到最重要的模塊了，
千萬不！要！劃！走！忍住沖動！~
歡迎加入飛書“開源技術交流群”，隨時找到我們哦~
點擊鏈接如何加入奇跡物聯技術話題群（如何加入奇跡物聯技術話題群）可以獲取加入技術話題群攻略
Hey 物聯網從業者，
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