詳細(xì)開發(fā)2新唐單片機(jī)cortexm032位numicro an1022sc how to use spi2bit mode v

ApplicationNoteofNUVOTON32-bitNuMicro?NuMicro?系列 5--i Rev.簡(jiǎn) 概 性 結(jié) 代碼部 主函 擦除SPI 調(diào)用順 測(cè)試 結(jié) 修訂歷 本文中，SPI控制器配置為2-bit主機(jī)，使用2個(gè)SPIflash（W25Q16BV,華邦spiFlash）作為從機(jī)。SPI主機(jī)使用串行時(shí)鐘（SPICLKx），一個(gè)從機(jī)選擇（SPISSx0）以及2通道數(shù)據(jù)輸入輸出（MISOx0/1,MOSIx0/1）控制這兩個(gè)SPIflash。MSB或LSB傳下圖描述了SPI控制器模塊圖。SPICLKx是SPI主機(jī)的串行時(shí)鐘，在主機(jī)模式下SPISSx0SPISSx1兩腳是從機(jī)選擇腳，在從機(jī)模式下只有SPISSx0是從機(jī)選擇腳。MOSIx0MISOx0引腳組合成第一通道數(shù)據(jù)收/發(fā)腳，MOSIx1和MISOx1引腳組合成第二通道數(shù)據(jù)收/發(fā)腳ClockClock(32-TXBufer/RXBufer/2-Core1SPI下圖是應(yīng)用框圖，我們?cè)O(shè)定NUC100的SPI控制器2(SPI2)作為SPI2-bit模式主機(jī)，SPICLK2是主機(jī)用來(lái)與兩個(gè)SPIflash收發(fā)數(shù)據(jù)的時(shí)鐘信號(hào)，SPISS20是SPI主機(jī)的從機(jī)選擇輸出，MISO20和MOSI20組成第一通道接到SPIflash0，MISO21和MOSI21組成第二通道接到SPIflash1。SPI-Flash (SPI2SPI-Flash 2SPI2-Bit在2-Bit模式中一次傳送只能收發(fā)32位長(zhǎng)度數(shù)據(jù)，MOSIx0和MISOx0引腳組成通道0，從SPI_Tx0寄存器發(fā)送數(shù)據(jù)，用SPI_Rx0接收數(shù)據(jù)。MOSIx1MISOx1引腳組成通道1，從SPI_Tx1寄存器發(fā)送數(shù)據(jù)，42-Bitintmain(void){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);/*MSBfirst/*DisabletheautomaticslaveselectfunctionofSS0.*//*Settheactivelevelofslaveselect.*//*ConfigureSPI2as2-bittransfermode*//*SPIclockrate1MHz*/ /*CheckMID&DID*//*EraseSPIflash*//*Waitready*//*initialsourcedata{}/*ProgramSPIflash*/u32FlashAddress={/*pageprogramu32FlashAddress+=}/*cleardatabuffer{}/*VerifySPIflash*/{u32FlashAddress+=0x100;{while(1);/*VerifyError!*/while(1);/*VerifyError!*/}/*cleardatabuffer{}}return}}SPI主機(jī)發(fā)送0x90命令到這兩個(gè)SPIflash,讀回各自的制造ID(MID)和設(shè)備ID(DID)，檢查讀到的數(shù)據(jù)是否等于0xEF14，如果數(shù)據(jù)正確則NUC1xxSPI主機(jī)和兩個(gè)flash從機(jī)連接成功。//////ForW25Q16BV,ManufacturerID:0xEF;DeviceID:0x14voidSpiFlashx2_ReadMidDid(void){uint32_tau32SourceData[2];/*configuretransactionlengthas8bits*//*/CS:active/*sendCommand:0x90,ReadManufacturer/DeviceID*/au32SourceData[0]=0x90;au32SourceData[1]=0x90;/*wait/*configuretransactionlengthas24bits*//*send24-bit'0',dummy*/au32SourceData[0]=0x0;au32SourceData[1]=0x0;/*wait/*configuretransactionlengthas16bits*//*receive*//*wait/*/CS:de-active*//*dumpRxregister/*checktheMIDandDIDif((au32DestinationData[0]&au32DestinationData[1]&0xffff)!=0xEF14)while(1);/*MID&DIDError*/}擦除SPIvoidvoid{/*configuretransactionlengthas8bits*//*/CS:active/*sendCommand:0x06,Writeenable*/au32SourceData[0]=0x06;au32SourceData[1]=0x06;/*wait/*/CS:de-active*//*/CS:active/*sendCommand:0xC7,ChipErase*/au32SourceData[0]=0xc7;au32SourceData[1]=0xc7;/*wait/*/CS:de-active*//*/CS:de-active*/}{uint32_tau32SourceData[2];/*configuretransactionlengthas16bits*//*/CS:active/*sendCommand:0x05,Readstatusregister1*/au32SourceData[0]=0x0500;au32SourceData[1]=0x0500;/*wait/*/CS:de-active*//*dumpRxregister}voidvoid{ReturnValue=ReturnValue&1;}{uint32_tCounter;/*configuretransactionlengthas8bits*//*/CS:active/*sendCommand:0x06,Writeenable*/au32SourceData[0]=0x06;au32SourceData[1]=0x06;/*wait/*/CS:de-active*//*/CS:active/*sendCommand:0x02,Pageprogram*/au32SourceData[0]=0x02;au32SourceData[1]=0x02;/*wait/*configuretransactionlengthas24bits*//*configuretransactionlengthas24bits*//*send24-bitstartaddress*//*wait/*configuretransactionlengthas8bits*/{/*senddatatoprogram*/au32SourceData[0]=DataBuffer[Counter];/*wait}/*/CS:de-active*/}voidvoidSpiFlashx2_ReadData(uint8_t*DataBuffer0,uint8_t uint32_tByteCount){uint32_tau32SourceData[2];uint32_tCounter;/*configuretransactionlengthas8bits/*/CS:active/*sendCommand:0x03,Readdata*/au32SourceData[0]=0x03;au32SourceData[1]=0x03;/*wait/*configuretransactionlengthas24bits/*send24-bitstartaddress*//*wait/*configuretransactionlengthas8bits{/*receive*//*wait/*dumpRxregisterDataBuffer0[Counter]=(uint8_t)au32DestinationData[0];DataBuffer1[Counter]=(uint8_t)au32DestinationData[1];}/*/CS:de-active*/}1.SPIDriverReference這個(gè)SPI示例程序使用2-bit傳送模式控制兩個(gè)SPIflash，Smpl_SPI_Flashx2可以用KeilMDK編譯并通過(guò)ICE到NUC1xx系列學(xué)習(xí)板，然后用戶可以在ICE環(huán)境下執(zhí)行代碼，或者復(fù)位學(xué)習(xí)板運(yùn)行片內(nèi)Flash版本1.ImportantNuvotonproductsarenotdesigned,intended,authorizedorwarrantedforuseascomponentsinsystemsorequipmentintendedforsurgicalimntation,atomicenergycontrolinstruments,airneorspaceshipinstruments,transportationinstruments,trafficsignalinstruments,combustioncontrolinstruments,orforotherapplicationsintendedtosupportorsustainlife.Furthermore,NuvotonproductsarenotintendedforapplicationswhereinfailureofNuvotonproductscouldresultorleadtoasituationwherein alinjury,deathorseverepropertyorenvironmentaldamagecouldoccur.Nuvotoncustomersusingorsellingtheseproductsforuseinsuchapplicationsdoso