【意法半导体 STM32 WL55】LoRa 测试

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本文介绍了意法半导体 Nucleo-WL55JC 开发板的通过 AT 指令实现 LoRa 调试的项目设计。

测试

打开官方 Demo 例程 LoRaWAN_AT_Slave，

路径 STM32Cube_FW_WL_V1.3.0\Projects\NUCLEO-WL55JC\Applications\LoRaWAN\LoRaWAN_AT_Slave\

该工程的功能是通过串口发送 AT 指令配置 LoRa 从机。

根据前一篇关于工程测试的介绍，编译和上传 LoRaWAN_AT_Slave 工程至开发板。

硬件连接

Micro 数据线连接开发板 ST-LINK 和电脑；

AT指令

打开串口调试助手，波特率 9600 bps

发送 AT 回车换行，回复 OK ，表明实现通信。

ATZ

发送 ATZ 指令，实现芯片复位，并串口打印初始化信息

AT?

发送 AT? 反馈相应的帮助信息 AT? to list all available functions

AT+<CMD>?        : Helpon<CMD>

AT+<CMD>         : Run<CMD>

AT+<CMD>=<value> : Setthevalue

AT+<CMD>=?       : Getthevalue

AT+VERGettheFWversion

AT+VL=<Level><CR>. SettheVerboseLevel=[0:Off .. 3:High]

AT+LTIMEGetthelocaltimeinUTCformat

ATZTrigaMCUreset

AT+RFS: RestoreEEPROMFactorySettings

AT+CS: StorecurrentcontexttoEEPROM

AT+APPEUI=<XX:XX:XX:XX:XX:XX:XX:XX><CR>. GetorSettheAppEui

AT+NWKKEY=<XX:XX:XX:XX:XX:XX:XX:XX:XX:XX:XX:XX:XX:XX:XX:XX><CR>: GetorSettheNetworkKey

AT+APPKEY=<XX:XX:XX:XX:XX:XX:XX:XX:XX:XX:XX:XX:XX:XX:XX:XX><CR>: GetorSettheApplicationKey

AT+NWKSKEY=<XX:XX:XX:XX:XX:XX:XX:XX:XX:XX:XX:XX:XX:XX:XX:XX><CR>: GetorSettheNetworkSessionKey

AT+APPSKEY=<XX:XX:XX:XX:XX:XX:XX:XX:XX:XX:XX:XX:XX:XX:XX:XX><CR>: GetorSettheApplicationSessionKey

AT+DADDR=<XXXXXXXX><CR>. GetorSettheDeviceaddress

AT+DEUI=<XX:XX:XX:XX:XX:XX:XX:XX><CR>. GetorSettheDeviceEUI

AT+NWKID=<NwkID><CR>. GetorSettheNetworkID=[0..127]

AT+JOIN=<Mode><CR>. JoinnetworkwithMode=[0:ABP, 1:OTAA]

AT+LINKC. PiggybackaLinkCheckRequesttothenextuplink

AT+SEND=<Port>:<Ack>:<Payload><CR>. SendbinarydatawiththeapplicationPort=[1..199] andAck=[0:unconfirmed, 1:confirmed]

AT+ADR=<ADR><CR>. GetorSettheAdaptiveDataRatesettingADR=[0:off, 1:on]

AT+DR=<DataRate><CR>. GetorSettheTxDataRate=[0..7]

AT+BAND=<BandID><CR>. GetorSettheActiveRegionBandID=[0:AS923, 1:AU915, 2:CN470, 3:CN779, 4:EU433, 5:EU868, 6:KR920, 7:IN865, 8:US915, 9:RU864]

AT+CLASS=<Class><CR>. GetorSettheDeviceClass=[A, B, C]

AT+DCS=<DutyCycle><CR>. GetorSettheETSIDutyCycle=[0:disable, 1:enable] -Onlyfortesting

AT+JN1DL=<Delay><CR>. GetorSettheJoinAcceptDelaybetweentheendoftheTxandtheJoinRxWindow1inms

AT+JN2DL=<Delay><CR>. GetorSettheJoinAcceptDelaybetweentheendoftheTxandtheJoinRxWindow2inms

AT+RX1DL=<Delay><CR>. GetorSetthedelaybetweentheendoftheTxandtheRxWindow1inms

AT+RX2DL=<Delay><CR>. GetorSetthedelaybetweentheendoftheTxandtheRxWindow2inms

AT+RX2DR=<DataRate><CR>. GetorSettheRx2windowDataRate=[0..7]

AT+RX2FQ=<Freq><CR>. GetorSettheRx2windowFreqinHz

AT+TXP=<Power><CR>. GetorSettheTransmitPower=[0..15](validrangeaccordingtoregion)

AT+PGSLOT=<Period><CR>. SetorGettheunicastpingslotPeriod=[0:1s .. 7:128s](=2^Period)

AT+TTONEStartsRFTonetest

AT+TRSSIStartsRFRSSItonetest

AT+TCONF=<FreqinHz>:<PowerindBm>:<LoraBandwidth<0to6>, orRxFSKBandwidthinHz>:<LoraSForFSKdatarate (bps)>:<CodingRate4/5, 4/6, 4/7, 4/8>:

<Lna>:<PABoost>:<Modulation0:FSK, 1:Lora, 2:BPSK, 3:MSK>:<PayloadLeninBytes>:<FskDeviationinHz>:<LowDrOpt0:off, 1:on, 2:Auto>:

<BTproduct: 0:noGaussianFilterApplied, 1:BT=0,3, 2:BT=0,5, 3:BT=0,7, 4:BT=1><CR>. ConfigureRFtest

AT+TCONF=868000000:14:50000:50000:4/5:0:0:0:16:25000:2:3/*FSK*/

AT+TCONF=868000000:14:10000:10000:4/5:0:0:3:16:25000:2:3/*MSK*/

AT+TCONF=868000000:14:4:12:4/5:0:0:1:16:25000:2:3/*LORA*/

AT+TTX=<PacketNb><CR>. StartsRFTxtest: Nbofpacketssent

AT+TRX=<PacketNb><CR>. StartsRFRxtest: Nbofpacketsexpected

AT+TTH=<Fstart>,<Fstop>,<Fdelta>,<PacketNb><CR>. StartsRFTxhoppingtestfromFstarttoFstopinHzorMHz, FdeltainHz

AT+TOFFStopson-goingRFtest

AT+CERTIF=<Mode><CR>. SetthemoduleinLoraWanCertificationwithJoinMode=[0:ABP, 1:OTAA]

AT+BATGetthebatteryLevelinmV



OK

复制代码

效果

发送 AT+VER? 回复

详见 AT 指令定义文件 lore_at.h ，路径 Application/User/LoRaWAN/App/

/* AT Command strings. Commands start with AT */

/* General commands */

#define AT_VER        "+VER"

#define AT_VL         "+VL"

#define AT_LTIME      "+LTIME"

#define AT_RESET      "Z"



/* Context Store */

#define AT_RFS        "+RFS"

#define AT_CS         "+CS"



/* Keys, IDs and EUIs management commands */

#define AT_JOINEUI    "+APPEUI" /*to match with V1.0.x specification- For V1.1.x "+APPEUI" will be replaced by "+JOINEUI"*/

#define AT_NWKKEY     "+NWKKEY"

#define AT_APPKEY     "+APPKEY"

#define AT_NWKSKEY    "+NWKSKEY"

#define AT_APPSKEY    "+APPSKEY"

#define AT_DADDR      "+DADDR"

#define AT_DEUI       "+DEUI"

#define AT_NWKID      "+NWKID"



/* LoRaWAN join and send data commands */

#define AT_JOIN       "+JOIN"

#define AT_LINKC      "+LINKC"

#define AT_SEND       "+SEND"



/* LoRaWAN network management commands */

#define AT_ADR        "+ADR"

#define AT_DR         "+DR"

#define AT_BAND       "+BAND"

#define AT_CLASS      "+CLASS"

#define AT_DCS        "+DCS"

#define AT_JN1DL      "+JN1DL"

#define AT_JN2DL      "+JN2DL"

#define AT_RX1DL      "+RX1DL"

#define AT_RX2DL      "+RX2DL"

#define AT_RX2DR      "+RX2DR"

#define AT_RX2FQ      "+RX2FQ"

#define AT_TXP        "+TXP"

#define AT_PGSLOT     "+PGSLOT"



/* Radio tests commands */

#define AT_TTONE      "+TTONE"

#define AT_TRSSI      "+TRSSI"

#define AT_TCONF      "+TCONF"

#define AT_TTX        "+TTX"

#define AT_TRX        "+TRX"

#define AT_TTH        "+TTH"

#define AT_TOFF       "+TOFF"



/* Radio access commands */

#define AT_REGW       "+REGW"

#define AT_REGR       "+REGR"



/* LoraWAN Certif command */

#define AT_CERTIF     "+CERTIF"



/* Information command */

#define AT_BAT        "+BAT"