LPCXpresso IDEのトピックLPC11A14 UART question https://community.nxp.com/t5/LPCXpresso-IDE/LPC11A14-UART-question/m-p/587638#M27733 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by tyassin on Tue Mar 04 06:11:52 MST 2014</STRONG><BR /><SPAN>Hello,</SPAN><BR /><BR /><SPAN>I have read the datasheet for this device and have a question about IIR-register.</SPAN><BR /><SPAN>In this register there is a flag in IIR[3:1] that can give you status of the UART. One of these flags are when IIR[3:1] is 0x3 'Receive Line Status (RLS)'. In this register, which now is called Line status register(LSR?????) is the first bit 0 'RDR(Receive Data Ready)' if there is data ready to be read from FIFO.</SPAN><BR /><BR /><SPAN>My question is what is the difference between this flag and the when the status of IIR[3:1] is 0x02 'Receive Data Available(RDA)'?</SPAN><BR /><BR /><SPAN>Thank you</SPAN></BODY></HTML> Wed, 15 Jun 2016 22:48:39 GMT lpcware 2016-06-15T22:48:39Z LPC11A14 UART question https://community.nxp.com/t5/LPCXpresso-IDE/LPC11A14-UART-question/m-p/587638#M27733 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by tyassin on Tue Mar 04 06:11:52 MST 2014</STRONG><BR /><SPAN>Hello,</SPAN><BR /><BR /><SPAN>I have read the datasheet for this device and have a question about IIR-register.</SPAN><BR /><SPAN>In this register there is a flag in IIR[3:1] that can give you status of the UART. One of these flags are when IIR[3:1] is 0x3 'Receive Line Status (RLS)'. In this register, which now is called Line status register(LSR?????) is the first bit 0 'RDR(Receive Data Ready)' if there is data ready to be read from FIFO.</SPAN><BR /><BR /><SPAN>My question is what is the difference between this flag and the when the status of IIR[3:1] is 0x02 'Receive Data Available(RDA)'?</SPAN><BR /><BR /><SPAN>Thank you</SPAN></BODY></HTML> Wed, 15 Jun 2016 22:48:39 GMT https://community.nxp.com/t5/LPCXpresso-IDE/LPC11A14-UART-question/m-p/587638#M27733 lpcware 2016-06-15T22:48:39Z