应用笔记linux lora开发

目录原理概 应用开 LoRa目录原理概 应用开 LoRa库主要 主流 源 免责声 1SPISPILoRa从机通PCIe接口的系统（SPI，SPI主机控制器驱动采GPIO-basedbitbangingSPIMasterGPIOSPI的功能。如果引脚兼容LoRa模块，12.1LoRa主要API说明在2.2中说明。LoRa库主初始化及系统状态部2.1GPIONRESET、DIO0DIO1IoT-3968LGPIO3-15、GPIO3-102intSX1276InitIo(void无2.2LoRaPCIe2.2LoRaPCIe3mode=0;bits=intspi_init(intargc,char*argv[])externintgRST_GPIO;gRST_GPIO=111;gDIO0_GPIO=gDIO1_GPIO=2.2spidev系统SPI2.3SPI2.4LoRa2.2spidev系统SPI2.3SPI2.4LoRa在LoRa调制模式下并没有明确的通信速率的概念，但有等效通信速率，最高可以37.5kbps。欲了解等效通信速率的介绍，可参考《SX1278_ag.pdf30页前后的内容。通4voidSX1276Init(void无无uint8_t无"-D--device devicetouse(default/dev/spidev1.0)\n""-s--speed maxspeed(Hz)\n""-d-- delay"-b-- bitsperword"-l-- "-H--cpha clockphase\n""-O--cpol "-L--lsb "-C--cs-highchipselectactivehigh\n""-3-- SI/SOsignalschar*arg[]={"./LoraDemo","-D","/dev/spidev3.0"};ret=spi_init(ARRAY_SIZE(arg),arg);speed=delay=2.5LoRa2.62.72.82.9()2.105void无无voidSX1276RxStateEnter(void无无void无无2.5LoRa2.62.72.82.9()2.105void无无voidSX1276RxStateEnter(void无无void无无voidSX1276TxPower(uint8_tpwr无voidSX1276Set_SF_BW(uint8_tSF,uint8_tSF：扩频因子[6:64712882569512101024112048124096BW：带宽[07.8kHz110.4kHz215.6kHz320.8kHz431.2kHz541.6kHz6kHz,7:125kHz,8:250kHz,9:500kHz,other:无无2.2.2通讯democase0）2.11DIO02.122.132.2.2通讯democase0）2.11DIO02.122.132.14DIO16uint8_t无0：DIO0电平为低；1：DIO0uint8_tSX1276TxData(uint8_t*pbuf,uint8_tsize,uint8_tcrc32flagvoidSX1276RxDataRead(uint8_t*pbuf,uint8_t*size,uint8_t无uint8_t无0：DIO0电平为低；1：DIO02.15CAD2.16CAD2.17CAD2.18CAD1.25秒左右的唤醒信号，这个唤醒信号的2.197uint8_tSX1276SendRemoteWakeUpPackage(doubleSignalTime,uint8_t*pbuf,2.15CAD2.16CAD2.17CAD2.18CAD1.25秒左右的唤醒信号，这个唤醒信号的2.197uint8_tSX1276SendRemoteWakeUpPackage(doubleSignalTime,uint8_t*pbuf,uint8_tSX1276CADRxData(doubleSignalTime,uint8_t*pbuf,uint8_tvoid无无void无无void无无程序退出部2.20GPIO2.21spi测试程主流程序退出部2.20GPIO2.21spi测试程主流2.3.2编译8CFLAGS+=-src:=main.cLDFLAGS+=-L${CURDIR}CFLAGS+=LIBRARIES=-#all:clean$(obj):$(CC)$(CFLAGS)${LDFLAGS}$^-o$@-g@rmvoidspi_release(void无无voidSX1276Release(void无无2.3源92.3源9 GuangzhouZLGMCUDevelopmentCo., File**File **Lastmodified 8-**Last ****Created **Created ** ****Modified **Modified ** ** **Modified **Modified ** ** **Modified **Modified ** **Descriptions: 优化CAD功能#include<stdio.h>#include#include#include#include"sx1276.h"#include"spidev.h"#defineARRAY_SIZE(a)(sizeof(a)/sizeof((a)[0]))/*GlobalVarstatic ucRxbuf[PACK_LENGTH]={ /*接收数据缓冲区staticuint8_t ucTxbuf[PACK_LENGTH]={0}; /*发送数据缓冲区*/staticuint8_t UPwr=20,CADMode=0,modeChanged=0; /*UPwr:5~20bBm*/intloop=1;**Function ****input **outputvoiddelayms(unsignedintuiNum){unsignedinti=0;}}voidsignal_hander(int{intchoice=-printf("Whatdoyouwanttoprintf("\tA.SwitchtoNormalRx //CADMode=printf("\tB.SwitchtoNormalTx //CADMode=printf("\tC.SwitchtoCadRx //CADMode=printf("\tD.SwitchtoCadTx //CADMode=if(choice<32)choice=casecaseif(CADMode!=printf("SwitchtoNormalRxMode...\n");CADMode=0;modeChanged=}printf("SystemalreadyinNormalRx}casecaseif(CADMode!=printf("SwitchtoNormalTxMode...\n");CADMode=1;modeChanged=}printf("SystemalreadyinNormalTx}casecaseif(CADMode!=CADMode=2;modeChanged=}printf("SystemalreadyinCadRx}casecaseif(CADModecasecaseif(CADMode!=CADMode=3;modeChanged=}printf("SystemalreadyinCadTx}casecaseprintf("goingto//releasesysgpioloop=0;printf("PleaseinputletterABCDorQ.\n");}}int{return0;}externintgRST_GPIO;externint**Function ** initgpio&**input ****input **output **Returned voidSystemInit(intargc,char*argv[]){intret=//gRST_GPIO=gDIO0_GPIO=gDIO1_GPIO=printf("RST:%d,DIO0:%d,DIO1:%d\n",gRST_GPIO,gDIO0_GPIO,SX1276InitIo();//default111106and//mode=0;bits=speed=delay=char*arg[]={"./LoraDemo","-D","/dev/spidev3.0"};ret=spi_init(ARRAY_SIZE(arg),arg);if(ret<0}}**Function ** **input **output **Returned intmain(intargc,char*argv[]){doublecrssi; uint16_tRxCounterdoublecrssi; uint16_tRxCounter=uint16_ttemp=0x5f,CADCounter=0;uint32_tFreq;//复位并检测SPIprintf("%sSPIisok\n"func SPIprintf("%sSPIerror..\nfunc SPI}Freq=470000000;UPwr=fprintf(stdout,"InitComplete!\n\rFreq:%uhz,UPower:%2udBm\n",Freq,UPwr);fprintf(stdout,"PressCtrl+Ctocallthemenu\n\n");=0;SX1276SetSleep();}case0://NormalRxcase0://NormalRx//RF芯片FIFO中的数据读取出来,1CRC32if(j>0){printf("Pack:%4d\n",crssi=SX1276GetRSSI();printf("revdata:");for(temp=0;temp<j;temp++)//printrxprintf("%c",}}//continuerecvice...}case1://NormalTxModememcpy(ucTxbuf,"Hello",6);if(0SX1276TxData(ucTxbuf,6,1//1CRC32}printf("txsuccessfully,backtorxmode\n");CADMode=0;case2://CadRxMode//printf("%d\n",LINE);//printf("%d\n",LINEif(1==SX1276Dio1State()){crssi=if(1==SX1276Dio1State()){crssi=for(temp=0;temp<j;temp++)//printrxprintf("%c",}}}}}CADSampling\n");}case3://CadTxModememcpy(ucTxbuf,"Hello",6);6,1)!=0){fprintf(stderr,"\nTX}printf("txsuccessfully,backtorxmode\n");CADMode=2;}}//releasesysgpioreturn}}//releasesysgpioreturn}EndOfFile销售与服务网广州致远电子有限公全国销售与服务电话销售与服务网广州致远电子有限公全国销售与服务电话：400-888-全国服务电话：400-888-销售与服务网络室电话：0755-829416830755-电话：027-62436478508电话：0571-厦（百脑会）2705室701电话您