物聯(lián)網(wǎng)行業(yè)中通信斷線(xiàn)重連現(xiàn)象介紹以及如何實(shí)現(xiàn)

一 概述

斷線(xiàn)重連是指在計(jì)算機(jī)網(wǎng)絡(luò)中，當(dāng)網(wǎng)絡(luò)連接遇到異常中斷或者斷開(kāi)時(shí)，系統(tǒng)會(huì)自動(dòng)嘗試重新建立連接，以保證網(wǎng)絡(luò)通信的連續(xù)性和穩(wěn)定性。這是一種常見(jiàn)的網(wǎng)絡(luò)通信技術(shù)，廣泛應(yīng)用于各種計(jì)算機(jī)網(wǎng)絡(luò)場(chǎng)景，包括互聯(lián)網(wǎng)、局域網(wǎng)、廣域網(wǎng)等。下面我們分別從含義、步驟、實(shí)現(xiàn)方式、重要性的方面分別展開(kāi)講解。

當(dāng)計(jì)算機(jī)在進(jìn)行網(wǎng)絡(luò)通信時(shí)，可能會(huì)遇到各種意外情況導(dǎo)致連接中斷，比如網(wǎng)絡(luò)故障、設(shè)備故障、鏈路故障、網(wǎng)絡(luò)擁塞等。當(dāng)連接中斷時(shí)，原本建立的通信鏈路將無(wú)法繼續(xù)傳遞數(shù)據(jù)，此時(shí)就需要通過(guò)斷線(xiàn)重連技術(shù)來(lái)重新建立連接。在斷線(xiàn)重連過(guò)程中，首先會(huì)檢測(cè)當(dāng)前連接是否已經(jīng)中斷，可以通過(guò)發(fā)送心跳包、接收心跳回應(yīng)等方式來(lái)檢測(cè)連接的可用性。如果發(fā)現(xiàn)連接已經(jīng)中斷，系統(tǒng)會(huì)自動(dòng)觸發(fā)斷線(xiàn)重連操作。

斷線(xiàn)重連操作通常包括以下幾個(gè)步驟：1. 斷開(kāi)當(dāng)前連接：當(dāng)檢測(cè)到連接中斷后，系統(tǒng)會(huì)主動(dòng)斷開(kāi)當(dāng)前連接，釋放相關(guān)資源。2. 嘗試重新建立連接：系統(tǒng)會(huì)按照預(yù)先設(shè)定的規(guī)則或者策略，嘗試重新建立連接。這個(gè)過(guò)程可以包括多次嘗試，每次嘗試可能采用不同的方式或參數(shù)進(jìn)行。3. 連接驗(yàn)證和協(xié)商：當(dāng)重新建立連接時(shí)，通常需要進(jìn)行連接驗(yàn)證和協(xié)商，以確保雙方的通信能力和參數(shù)兼容，避免發(fā)生通信錯(cuò)誤或者數(shù)據(jù)丟失。4. 恢復(fù)數(shù)據(jù)傳輸：一旦連接成功建立，系統(tǒng)會(huì)恢復(fù)之前中斷的數(shù)據(jù)傳輸，保證數(shù)據(jù)的完整性和連續(xù)性。這個(gè)過(guò)程可能包括重發(fā)未確認(rèn)的數(shù)據(jù)包、重建傳輸隊(duì)列等。

斷線(xiàn)重連技術(shù)的實(shí)現(xiàn)可以采用多種方式，例如在應(yīng)用層、傳輸層或者網(wǎng)絡(luò)層實(shí)現(xiàn)，具體的實(shí)現(xiàn)方法和機(jī)制會(huì)根據(jù)不同的網(wǎng)絡(luò)環(huán)境和應(yīng)用需求而有所差異。

斷線(xiàn)重連技術(shù)的重要性在于保證網(wǎng)絡(luò)通信的可靠性和穩(wěn)定性。在大規(guī)模的網(wǎng)絡(luò)環(huán)境中，網(wǎng)絡(luò)中斷或者故障是不可避免的，但通過(guò)斷線(xiàn)重連技術(shù)，系統(tǒng)能夠快速自動(dòng)地進(jìn)行連接恢復(fù)，減少網(wǎng)絡(luò)中斷對(duì)應(yīng)用和用戶(hù)的影響。

綜上，斷線(xiàn)重連是一種計(jì)算機(jī)網(wǎng)絡(luò)中常用的技術(shù)手段，用于在網(wǎng)絡(luò)連接中斷時(shí)自動(dòng)重新建立連接。通過(guò)斷線(xiàn)重連技術(shù)，可以確保網(wǎng)絡(luò)通信的連續(xù)性和穩(wěn)定性，提升用戶(hù)體驗(yàn)和應(yīng)用性能。

二 掉線(xiàn)重連組件的使用

1 Gitee鏈接地址

組件位于amaziot_bloom_os_sdklibrariesamam_net.c

Gitee源碼地址：https://gitee.com/ning./hongdou

Github源碼地址：https://github.com/ayumid/hongdou

2 應(yīng)用層組件功能介紹

提供重連機(jī)制，設(shè)備掉線(xiàn)后，需要重新連接服務(wù)器，可以參考本組件，或者直接在組件上修改。本例調(diào)用了部分TCP組件，MQTT組件和切卡組件API。

使用該組件，必須同時(shí)使用AT組件，文件組件，TCP組件，掉線(xiàn)組件，掉線(xiàn)重連組件。

3 代碼講解

1 dtu_wait_dev_reg_net

功能：該函數(shù)用于，駐網(wǎng)，每隔3s查詢(xún)一次駐網(wǎng)情況，超過(guò)20次后，復(fù)位模組。

參數(shù)：無(wú)

返回值：無(wú)

示例：

//等待駐網(wǎng)
dtu_wait_dev_reg_net();

2 dtu_main_check_net_thread

功能：該函數(shù)用于，維護(hù)網(wǎng)絡(luò)連接，掉線(xiàn)后重連。

參數(shù)：

返回值：無(wú)

示例：

//創(chuàng)建主任務(wù)，包括網(wǎng)絡(luò)連接，死循環(huán)中檢查網(wǎng)絡(luò)連接情況，斷連后重新連接
status = OSATaskCreate(&dtu_task_ref, dtu_task_stack, DTU_TASK_STACK_SIZE, 150, "main_task", dtu_main_check_net_thread, NULL);
ASSERT(status == OS_SUCCESS);

3 dtu_checknet_task_init

功能：該函數(shù)用于，創(chuàng)建網(wǎng)絡(luò)重連任務(wù)，以及相關(guān)資源初始化。

參數(shù)：無(wú)

返回值：無(wú)

示例：

//網(wǎng)絡(luò)保持任務(wù)初始化
dtu_checknet_task_init();

4 Demo實(shí)戰(zhàn)

4.1 創(chuàng)建一個(gè)Demo

復(fù)制20.4_trans_xtu示例工程，到同一個(gè)文件夾下，修改文件名為20.7_netreconnect_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(kāi)main.c，修改main.c，加入am.h等頭文件，如圖：

4.4 修改代碼

示例使用的是板載5x6卡，用戶(hù)的硬件可能是使用外置卡，或者是三合一全網(wǎng)通卡，因?yàn)橛布先N卡使用的模組SIM卡接口不一樣（外置卡SIM1，5x6卡和三合一卡SIM2），所以，需要通過(guò)一個(gè)全局變量來(lái)制定SIM卡硬件接口。

extern外部變量SDK_INIT_SIM_SELECT_VALUE，這里判斷了是否使用外置卡，這個(gè)宏定義在Makefile里面定義。

在Phase1Inits_enter中，宏定義判斷是否要包含對(duì)SDK_INIT_SIM_SELECT_VALUE變量的修改。

在Phase2Inits_exit 調(diào)用文件組件提供的對(duì)外API，如圖：

4.5 編譯

在SDK根目錄打開(kāi)命令行，輸入命令.build.bat -l .amaziot_bloom_os_sdksamplelibraries20.7_netreconnect_xtu

PS F:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08
λ .build.bat -l .amaziot_bloom_os_sdksamplelibraries20.7_netreconnect_xtu
子目錄或文件 outbin 已經(jīng)存在。
命令語(yǔ)法不正確。
子目錄或文件 buildobj 已經(jīng)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/20.7_netreconnect_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 -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 21 2023"" -DBUILD_TIME=""15:44:12"" -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/20.7_netreconnect_xtuaminc -IF:/3.asr-b/cat.1-asr1606/1.software/BLOOM_OS_1606_OPENCPU_1191_A08/amaziot_bloom_os_sdk/sample/libraries/20.7_netreconnect_xtuatcmdsinc -IF:3.asr-bcat.1-asr16061.softwareBLOOM_OS_1606_OPENCPU_1191_A08/amaziot_bloom_os_sdk/librariesamxtu -DDTU_BASED_ON_TCP -DDTU_TYPE_5X6 -DDTU_UART_115200_BAUD  -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/20.7_netreconnect_xtu/atcmds/src/ext_at_cmds.c
armlink.exe buildobj/main.o buildobj/ext_at_cmds.o buildobj/ext_at_controller.o buildobj/am_file.o buildobj/am_at.o buildobj/am_trans.o buildobj/am_socket.o buildobj/am_hb.o buildobj/am_net.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_ |7e11c000.80066514.0000d188.80067000|0000d188->00003000
|This Is LteOnly 4M|
|RW_CPZ_2|PS_NCAH |7e388000.8007369c.00001300.8006a000|00001300->00001000
|This Is LteOnly 4M|
|RW_CPZ_3|ITCM    |7e3dac00.8007499c.0000f51c.8006b000|0000f51c->0000a000
|This Is LteOnly 4M|
|RW_CPZ_4|CODE_PS |7e1ad000.80083eb8.0002fc5c.80075000|0002fc5c->0001e000
|This Is LteOnly 4M|
|RW_CPZ_5|CODEPSB |7e1df000.800b3b14.000339bc.80093000|000339bc->0001b000
|This Is LteOnly 4M|
|RW_CPZ_6|CODEPSC |7e216000.800e74d0.000323ec.800ae000|000323ec->0001b000
|This Is LteOnly 4M|
|RW_CPZ_7|CODEPSD |7e24c000.801198bc.00028d88.800c9000|00028d88->0001a000
|This Is LteOnly 4M|
|RW_CPZ_8|CODEPSE |7e27a000.80142644.0002e310.800e3000|0002e310->0001a000
|This Is LteOnly 4M|
|RW_CPZ_9|CODEPSF |7e2ac000.80170954.0001c948.800fd000|0001c948->00011000
|This Is LteOnly 4M|
|RW_CPZ_A|CODE_PL |7e2cd000.8018d29c.0002f914.8010e000|0002f914->0001e000
|This Is LteOnly 4M|
|RW_CPZ_B|CODEPLB |7e2fd000.801bcbb0.00038d58.8012c000|00038d58->00021000
|This Is LteOnly 4M|
|RW_CPZ_C|CODEPLC |7e337000.801f5908.000268d4.8014d000|000268d4->00012000
|--------|--------|--------.--------.--------.--------|------------------------------|
|                                                     |      0x002051dc -> 0x00148000|
|                                                     |       2.020(MB) ->  1.281(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/20.7_netreconnect_xtu'
"copy NEZHAC_CP_CNR_MIFI_TX.bin to ./ "

已復(fù)制         1 個(gè)文件。

4.6 生成固件

參考入門(mén)中開(kāi)發(fā)工具，生成工具。

4.7 查看現(xiàn)象

固件下載到模組后，通過(guò)AT串口配置服務(wù)器地址，等待設(shè)備連接服務(wù)器后，斷開(kāi)關(guān)閉服務(wù)器，設(shè)備會(huì)離線(xiàn)，之后打開(kāi)服務(wù)器。設(shè)備會(huì)重新連接。

5 總結(jié)

根據(jù)實(shí)驗(yàn)現(xiàn)象，按照本文所述流程，可以實(shí)現(xiàn)串口模式切換。

本文章源自奇跡物聯(lián)開(kāi)源的物聯(lián)網(wǎng)應(yīng)用知識(shí)庫(kù)Cellular IoT Wiki，更多技術(shù)干貨歡迎關(guān)注收藏Wiki：Cellular IoT Wiki 知識(shí)庫(kù)（https://rckrv97mzx.feishu.cn/wiki/wikcnBvAC9WOkEYG5CLqGwm6PHf）

歡迎同學(xué)們走進(jìn)AmazIOT知識(shí)庫(kù)的世界！

這里是為物聯(lián)網(wǎng)人構(gòu)建的技術(shù)應(yīng)用百科，以便幫助你更快更簡(jiǎn)單的開(kāi)發(fā)物聯(lián)網(wǎng)產(chǎn)品。

Cellular IoT Wiki初心：

在我們長(zhǎng)期投身于蜂窩物聯(lián)網(wǎng) ODM/OEM 解決方案的實(shí)踐過(guò)程中，一直被物聯(lián)網(wǎng)技術(shù)碎片化與產(chǎn)業(yè)資源碎片化的問(wèn)題所困擾。從產(chǎn)品定義、芯片選型，到軟硬件研發(fā)和測(cè)試，物聯(lián)網(wǎng)技術(shù)的碎片化以及產(chǎn)業(yè)資源的碎片化，始終對(duì)團(tuán)隊(duì)的產(chǎn)品開(kāi)發(fā)交付質(zhì)量和效率形成制約。為了減少因物聯(lián)網(wǎng)碎片化而帶來(lái)的重復(fù)開(kāi)發(fā)工作，我們著手對(duì)物聯(lián)網(wǎng)開(kāi)發(fā)中高頻應(yīng)用的技術(shù)知識(shí)進(jìn)行沉淀管理，并基于 Bloom OS 搭建了不同平臺(tái)的 RTOS 應(yīng)用生態(tài)。后來(lái)我們發(fā)現(xiàn)，很多物聯(lián)網(wǎng)產(chǎn)品開(kāi)發(fā)團(tuán)隊(duì)都面臨著相似的困擾，于是，我們決定向全體物聯(lián)網(wǎng)行業(yè)開(kāi)發(fā)者開(kāi)放奇跡物聯(lián)內(nèi)部沉淀的應(yīng)用技術(shù)知識(shí)庫(kù) Wiki，期望能為更多物聯(lián)網(wǎng)產(chǎn)品開(kāi)發(fā)者減輕一些重復(fù)造輪子的負(fù)擔(dān)。

Cellular IoT Wiki沉淀的技術(shù)內(nèi)容方向如下：

奇跡物聯(lián)的業(yè)務(wù)服務(wù)范圍：基于自研的NB-IoT、Cat1、Cat4等物聯(lián)網(wǎng)模組，為客戶(hù)物聯(lián)網(wǎng)ODM/OEM解決方案服務(wù)。我們的研發(fā)技術(shù)中心在石家莊，PCBA生產(chǎn)基地分布在深圳、石家莊、北京三個(gè)工廠，滿(mǎn)足不同區(qū)域&不同量產(chǎn)規(guī)模&不同產(chǎn)品開(kāi)發(fā)階段的生產(chǎn)制造任務(wù)。跟傳統(tǒng)PCBA工廠最大的區(qū)別是我們只服務(wù)物聯(lián)網(wǎng)行業(yè)客戶(hù)。

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讓蜂窩物聯(lián)網(wǎng)應(yīng)用更簡(jiǎn)單~~

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Hey 物聯(lián)網(wǎng)從業(yè)者，

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這里是奇跡物聯(lián)的物聯(lián)網(wǎng)應(yīng)用技術(shù)開(kāi)源wiki主陣地，歡迎關(guān)注公眾號(hào)，不迷路～

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