詳細(xì)開(kāi)發(fā)2新唐單片機(jī)cortexm032位22numicro mini51uart

議題UART特性UART方塊圖UARTUARTIrDARS-485UARTUARTUARTUART獨(dú)立可編程波特率發(fā)生完全可編程的串口特UART接收/發(fā)送支持單獨(dú)的16/16字節(jié)緩支持IrDASIRUART方塊圖

使用22.1184MHz使用22.1184MHzUART方塊圖888Status888Status&Status&RX_FIFORX_FIFOBaudRateGeneratorControlandStatusBaudRateGeneratorControlandStatusregistersTXshiftregister

BaudRXshiftregisterSerialRXshiftregister

SerialDataNote:UARTequips16bytesUART時(shí)序設(shè)定完全可編程串行接奇,偶或者無(wú)校驗(yàn)奇,偶或者無(wú)校驗(yàn)

DATA(5-

5~5~1~波特率發(fā)生波特0BAUART_CLK/[16*0BAUART_CLK/[(B+1)*(A+2)],Bmust>=Mode1BAUART_CLK/(A+2),AmustUART時(shí)序設(shè)定xUART自動(dòng)流控功/CTS引腳可以喚醒/CTS/RTSChip/RTS/CTSFlowSerialtoFlowParalleltoRxTxBUSIrDA模式支持IrDA發(fā)送和接SOUTSOUTTXEmitInfraredTransceiverDetectInfraredIRCRRXIrDA模式START

STOP

010011100(fromuart 010011100(encoder(decorder

3/16bit0100101001

b b(Touart

it

1 10START0

Bitpulse

STOPRS-485模3種模正常操作模式(自動(dòng)地址識(shí)別模式(自動(dòng)方向控制模式(

UART中中斷使中斷指中斷標(biāo)清除標(biāo)BUF_ERR_IF‘1’到INT_MODEM(CTS狀態(tài)變寫(xiě)‘1’到RLS_IF(BIForFEF寫(xiě)‘1’到寫(xiě)INT_RDA(選讀UART寄存器映UART址UART_BA=UART_BA+RUART接收寄存器UART_BA+WUART發(fā)送保持寄存器UART_BA+UART中斷使能寄存器UART_BA+UART緩沖控制寄存器UART_BA+UART線控制寄存器UART_BA+UARTModem控制寄存器UART_BA+UARTModem狀態(tài)寄存器UART_BA+UART_BA+UART_BA+UART超時(shí)寄存UART_BA+UART波特率除數(shù)寄存UART_BA+UARTIrDA控制寄存器UART_BA+UART_BA+UART示UART波特率數(shù)據(jù)長(zhǎng)度8bits校驗(yàn):Disable停止位:1bitUART流程相UART示例代碼，使用驅(qū)動(dòng)MAINint32_tmain{STR_UART_T/*使能并選UART時(shí)鐘源/*12MHz外部晶振DrvSYS_SetOscCtrl(XTL_CLK,/*12M晶振穩(wěn)定/*選擇UART時(shí)鐘源:12Mhz/*GPIOUART示例代碼，使用驅(qū)動(dòng)/*打開(kāi){

=====}UART示例代碼，使用驅(qū)動(dòng) voidSend(int{UART0->THR=ch;if(ch=={UART0->THR='\r';}}char{while{{return(UART0-}}}UART示例代碼MAINfunction–4int32_tmain{GCR->P1_MFP.ALT|=GCR->P1_MFP.ALT|=//UARTUART示例代碼UART0->FCR_BITS.TFRUART0->FCR_BITS.RFR級(jí)別UART0->FCR_BITS.RTS_TRI_LEV=//無(wú)校UART0->LCR_BITS.PBE=UART0->LCR_BITS.WLS=UART0->LCR_BITS.