应用指南位cortexm0单片机numicr教程

目1简 概 性 结 目1简 概 性 结 SPI应用框 2-Bit模式下的Tx/Rx寄存器和I/O 2-Bit传送模式时序 2代码部 主函 检查SPIFlash的MID和 擦除SPI 读SPIFlash的状态寄存器 检查SPIflash的BUSY SPIFlash编 从SPIFlash读数 3调用顺 综合SPI控制器和SPI NUC100设 有关的API参考 4运行环境设置及结 测试 结 5修订历 Rev.-11简本文档描述了怎样使用NUC1xx系列芯片SPI控1简本文档描述了怎样使用NUC1xx系列芯片SPI控制器的2-bit模概本文中，I2-t主机，使用2个IahW5,华邦ps）I主机使用串行时钟（Cx），一个从机选择（Sx0）以及2通道数据输入/输出（MO0,xIs。性可配置最大传输字1~32位,一次可传输1~2MSBLSB在前传支持传送和接收Rev.-2 结下图描述了SPI控制器模块图。SPICLKx是SPI主机的串行时钟，在主机模式下SPISSx0和SPISSx1xx0x1和MO1和MISOx0引脚组合成1SPIRev.-3Core TX 结下图描述了SPI控制器模块图。SPICLKx是SPI主机的串行时钟，在主机模式下SPISSx0和SPISSx1xx0x1和MO1和MISOx0引脚组合成1SPIRev.-3Core TX RX 2-ClockSPI应用框下图是应用框图，我们设定NUC100的SPI控制器2(SPI2)作为SPI2-bit模式主机，SPICLK2是主SPI应用框下图是应用框图，我们设定NUC100的SPI控制器2(SPI2)作为SPI2-bit模式主机，SPICLK2是主机用与两个SPIflash收发数据的时钟信号，SPISS20是SPI主机的从机选择输出，MISO20和第一通道接到SPIflash0，MISO21和MOSI21组成第二通道接到SPIflash1。MOSI20组2SPI2-Bit传送模式应用框Rev.-4 (SPI2SPI-Flash SPI-Flash 2-Bit模式下的Tx/Rx寄存器和I/O在2-Bit模式中一次传送只能收发32位长度数据，MOSIx02-Bit模式下的Tx/Rx寄存器和I/O在2-Bit模式中一次传送只能收发32位长度数据，MOSIx0和MISOx0引脚组成通道0，从SPI_Tx0寄存器发送数据，用SPI_Rx0接收数据。MOSIx1和MISOx1引脚组成通道1，从SPI_Tx1寄存器发送数据，Rev.-52-Bit传送模式时序下图描述SPI2-Bit传送模式时序图2-Bit传送模式时Rev.-62-Bit传送模式时序下图描述SPI2-Bit传送模式时序图2-Bit传送模式时Rev.-6 代码部主函 代码部主函主函数中首先检查了这2个SPIflash的MID和DID，然后擦除这2个flash，接着写数据0x00~0xff到的第一页，写数据0xff~0x00到flash1的第一页，最后验证2个flashRev.-7#defineTEST_NUMBER1intmain(void){uint32_tu32ByteCount,u32FlashAddress,u32PageNumber;uint8_tDataBuffer0[256];uint8_t/*Unlocktheprotectedregisters*//*Enablethe12MHzoscillatoroscillation*/DrvSYS_SetOscCtrl(E_SYS_XTL12M,1);/*HCLKclocksource.0:external12MHz;4:internal22MHzRCoscillator*//*HCLKclockfrequency=HCLKclocksource/(HCLK_N+1)*/DrvSYS_SetClockDivider(E_SYS_HCLK_DIV,0);/*ConfigureSPI2asamaster,Type1waveform,32-bittransaction*/DrvSPI_Open(eDRVSPI_PORT2,eDRVSPI_MASTER,eDRVSPI_TYPE1,32);/*MSBfirstDrvSPI_SetEndian(eDRVSPI_PORT2,/*DisabletheautomaticslaveselectfunctionofSS0.*/Rev.Rev.-8/*Settheactivelevelofslaveselect.*/DrvSPI_SetSlaveSelectActiveLevel(eDRVSPI_PORT2,eDRVSPI_ACTIVE_LOW_FALLING);/*ConfigureSPI2as2-bittransfermode*/DrvSPI_Set2BitSerialDataIOMode(eDRVSPI_PORT2,TRUE);/*SPIclockrate1MHz*/DrvSPI_SetClock(eDRVSPI_PORT2,1000000,0);/*CheckMID&DID*//*EraseSPIflash*//*Waitready*//*initialsourcedatafor(u32ByteCount=0;u32ByteCount<256;{DataBuffer0[u32ByteCount]=}/*ProgramSPIflash*/u32FlashAddress=for(u32PageNumber=0;u32PageNumber<TEST_NUMBER;{/*pageprogramSpiFlashx2_PageProgram(DataBuffer0,u32FlashAddress,256);u32FlashAddress+=}Rev.Rev.-9/*cleardatabufferfor(u32ByteCount=0;u32ByteCount<256;{DataBuffer0[u32ByteCount]=DataBuffer1[u32ByteCount]=}/*VerifySPIflash*/u32FlashAddress=0;for(u32PageNumber=0;u32PageNumber<TEST_NUMBER;{SpiFlashx2_ReadData(DataBuffer0,DataBuffer1,u32FlashAddress,256);u32FlashAddress+=0x100;for(u32ByteCount=0;u32ByteCount<256;{while(1);/*VerifyError!*/while(1);/*VerifyError!*/}/*cleardatabufferfor(u32ByteCount=0;u32ByteCount<256;{DataBuffer0[u32ByteCount]=DataBuffer1[u32ByteCount]=}}return检查SPIFlash的MID和SPI检查SPIFlash的MID和SPI主机发送0x90命令到这两个SPIflash,读回各自的制造ID(MID)和设备ID(DID)，检查读到的数据是否等于0xEF14，如果数据正确则NUC1xxSPI主机和两个flash从机连接成功。Rev.-10////ForW25Q16BV,ManufacturerID:0xEF;DeviceID:0x14voidSpiFlashx2_ReadMidDid(void){uint32_tau32SourceData[2];uint32_tau32DestinationData[2];/*configuretransactionlengthas8bits*/DrvSPI_SetBitLength(eDRVSPI_PORT2,8);/*/CS:activeDrvSPI_SetCS(eDRVSPI_PORT2,/*sendCommand:0x90,ReadManufacturer/DeviceID*/au32SourceData[0]=0x90;au32SourceData[1]=0x90;DrvSPI_BurstWrite(eDRVSPI_PORT2,&au32SourceData[0]);/*waitwhile(DrvSPI_Busy(eDRVSPI_PORT2))/*configuretransactionlengthas24bits*/DrvSPI_SetBitLength(eDRVSPI_PORT2,24);/*send24-bit'0',dummy*/au32SourceData[0]=0x0;au32SourceData[1]=0x0;DrvSPI_BurstWrite(eDRVSPI_PORT2,/*wait}Rev.Rev.-11while(DrvSPI_Busy(eDRVSPI_PORT2))/*configuretransactionlengthas16bits*/DrvSPI_SetBitLength(eDRVSPI_PORT2,16);/*receive*/au32SourceData[0]=0x0;au32SourceData[1]=DrvSPI_BurstWrite(eDRVSPI_PORT2,/*waitwhile(DrvSPI_Busy(eDRVSPI_PORT2))/*/CS:de-active*/DrvSPI_ClrCS(eDRVSPI_PORT2,eDRVSPI_SS0);/*dumpRxregisterDrvSPI_DumpRxRegister(eDRVSPI_PORT2,&au32DestinationData[0],/*checktheMIDandDIDif((au32DestinationData[0]&au32DestinationData[1]&0xffff)!=0xEF14)while(1);/*MID&DIDError*/}擦除SPISPI主机可擦除SPISPI主机可以发送0xC7命令到这两个SPIflash将其擦Rev.-12void{uint32_t/*configuretransactionlengthas8bits*/DrvSPI_SetBitLength(eDRVSPI_PORT2,8);/*/CS:activeDrvSPI_SetCS(eDRVSPI_PORT2,/*sendCommand:0x06,Writeenable*/au32SourceData[0]=0x06;au32SourceData[1]=0x06;DrvSPI_BurstWrite(eDRVSPI_PORT2,/*waitwhile(DrvSPI_Busy(eDRVSPI_PORT2))/*/CS:de-active*/DrvSPI_ClrCS(eDRVSPI_PORT2,eDRVSPI_SS0);/*/CS:activeDrvSPI_SetCS(eDRVSPI_PORT2,/*sendCommand:0xC7,ChipErase*/au32SourceData[0]=0xc7;au32SourceData[1]=0xc7;DrvSPI_BurstWrite(eDRVSPI_PORT2,/*waitwhile(DrvSPI_Busy(eDRVSPI_PORT2))Rev.Rev.-13/*/CS:de-active*/DrvSPI_ClrCS(eDRVSPI_PORT2,eDRVSPI_SS0);}读SPIFlash的状态读SPIFlash的状态寄存器SPI主机发送0x05命令到这两个SPIFlash可以读回各自的状态寄存器Rev.-14uint32_t{uint32_tau32SourceData[2];uint32_tau32DestinationData[2];/*configuretransactionlengthas16bits*/DrvSPI_SetBitLength(eDRVSPI_PORT2,16);/*/CS:activeDrvSPI_SetCS(eDRVSPI_PORT2,/*sendCommand:0x05,Readstatusregister1*/au32SourceData[0]=0x0500;au32SourceData[1]=0x0500;DrvSPI_BurstWrite(eDRVSPI_PORT2,/*waitwhile(DrvSPI_Busy(eDRVSPI_PORT2))/*/CS:de-active*/DrvSPI_ClrCS(eDRVSPI_PORT2,eDRVSPI_SS0);/*dumpRxregisterDrvSPI_DumpRxRegister(eDRVSPI_PORT2,&au32DestinationData[0],return((au32DestinationData[0]|au32DestinationData[1])&}检查SPIflash的BUSY检查SPIflash的BUSYSPI主机读回SPIflash状态寄存器1的值并检查SPIflash是否正Rev.-15void{uint32_tReturnValue=SpiFlash2_ReadStatusReg1();ReturnValue=ReturnValue&1;}while(ReturnValue!=0);//checktheBUSY}SPIFlash编SPI主机发送SPIFlash编SPI主机发送0x02命令到SPIflash，可以对其Rev.-16voidSpiFlashx2_PageProgram(uint8_t*DataBuffer,uint32_tStartAddress,uint32_t{uint32_tau32SourceData[2];uint32_tCounter;/*configuretransactionlengthas8bits*/DrvSPI_SetBitLength(eDRVSPI_PORT2,8);/*/CS:activeDrvSPI_SetCS(eDRVSPI_PORT2,/*sendCommand:0x06,Writeenable*/au32SourceData[0]=0x06;au32SourceData[1]=0x06;DrvSPI_BurstWrite(eDRVSPI_PORT2,/*waitwhile(DrvSPI_Busy(eDRVSPI_PORT2))/*/CS:de-active*/DrvSPI_ClrCS(eDRVSPI_PORT2,eDRVSPI_SS0);/*/CS:activeDrvSPI_SetCS(eDRVSPI_PORT2,/*sendCommand:0x02,Pageprogram*/au32SourceData[0]=0x02;au32SourceData[1]=0x02;DrvSPI_BurstWrite(eDRVSPI_PORT2,/*waitwhile(DrvSPI_Busy(eDRVSPI_PORT2))Rev.Rev.-17/*configuretransactionlengthas24bits*/DrvSPI_SetBitLength(eDRVSPI_PORT2,24);/*send24-bitstartaddress*/au32SourceData[0]=StartAddress;au32SourceData[1]=DrvSPI_BurstWrite(eDRVSPI_PORT2,/*waitwhile(DrvSPI_Busy(eDRVSPI_PORT2))/*configuretransactionlengthas8bits*/DrvSPI_SetBitLength(eDRVSPI_PORT2,8);for(Counter=0;Counter<ByteCount;{/*senddatatoprogram*/au32SourceData[0]=DataBuffer[Counter];au32SourceData[1]=DrvSPI_BurstWrite(eDRVSPI_PORT2,/*waitwhile(DrvSPI_Busy(eDRVSPI_PORT2))}/*/CS:de-active*/DrvSPI_ClrCS(eDRVSPI_PORT2,eDRVSPI_SS0);}从SPIFlashSPI主机发送从SPIFlashSPI主机发送0x03命令到SPIFlash可以Rev.-18voidSpiFlashx2_ReadData(uint8_t*DataBuffer0,uint8_t*DataBuffer1,uint32_tStartAddress,uint32_tByteCount){uint32_tau32SourceData[2];uint32_tau32DestinationData[2];uint32_tCounter;/*configuretransactionlengthas8bits*/DrvSPI_SetBitLength(eDRVSPI_PORT2,8);/*/CS:activeDrvSPI_SetCS(eDRVSPI_PORT2,/*sendCommand:0x03,Readdata*/au32SourceData[0]=0x03;au32SourceData[1]=0x03;DrvSPI_BurstWrite(eDRVSPI_PORT2,/*waitwhile(DrvSPI_Busy(eDRVSPI_PORT2))/*configuretransactionlengthas24bits*/DrvSPI_SetBitLength(eDRVSPI_PORT2,24);/*send24-bitstartaddress*/au32SourceData[0]=StartAddress;au32SourceData[1]=DrvSPI_BurstWrite(eDRVSPI_PORT2,/*waitwhile(DrvSPI_Busy(eDRVSPI_PORT2))/*configuretransactionlengthas8bitsRev.Rev.-19DrvSPI_SetBitLength(eDRVSPI_PORT2,for(Counter=0;Counter<ByteCount;{/*receive*/au32SourceData[0]=0x0;au32SourceData[1]=DrvSPI_BurstWrite(eDRVSPI_PORT2,/*waitwhile(DrvSPI_Busy(eDRVSPI_PORT2))/*dumpRxregisterDrvSPI_DumpRxRegister(eDRVSPI_PORT2,&au32DestinationData[0],2);DataBuffer0[Counter]=(uint8_t)au32DestinationData[0];DataBuffer1[Counter]=(uint8_t)au32DestinationData[1];}/*/CS:de-active*/DrvSPI_ClrCS(eDRVSPI_PORT2,eDRVSPI_SS0);}3调用顺综合SPI控制器和Rev.-203调用顺综合SPI控制器和Rev.-20NUC100设硬件初始化：使能12MHz晶振，设置HCLK时钟源及NUC100设硬件初始化：使能12MHz晶振，设置HCLK时钟源及其分配置I控制器2为主机，-tz整片擦除这两个SPIflash对这两个SPIFlash的第一页写入互补的数据从两个SPIFlash中读出数据并检查关闭SPI控制器有关的API参考SPIDriverReferenceRev.-21 运行环境设置及结 运行环境设置及结-Is，slE下载到x系列学习板，然后用户可以在E环境下执行代码，或者复位学习板运行片内h结Rev.-225修订历Rev.-23版5修订历Rev.-23版本日描1.初次发ImportantNuvotonproductsImportantNuvotonproductsarenotdesigned,intended,authorizedorwarrantedforuseascomponentsinsystemsorequipmentintendedforsurgicalimplantation,atomicenergycontrolinstruments,airplaneorspaceshipinstruments,transportationinstruments,trafficsignalinstruments,combustioncontrolinstruments,orforotherapplicationsintendedtosupportorsustainlife.Furthermore,NuvotonproductsarenotintendedforapplicationswhereinfailureofNuvotonproductscouldresultorleadtoasituationwhereinpersonalinjury,deathorseverepropertyorenvironmentaldamagecouldoccur.NuvotoncustomersusingorsellingtheseproductsforuseinsuchapplicationsdosoattheirownriskandagreetofullyindemnifyNuvotonforanydamagesresultingfromsuchimproperuseorsales.Pleasenotethatalldataandspecificationsaresubjecttochangewithoutnotice.Allt