ColdFire/68K Microcontrollers and ProcessorsのトピックFull duplex https://community.nxp.com/t5/ColdFire-68K-Microcontrollers/Full-duplex/m-p/183574#M7592 <HTML><HEAD></HEAD><BODY><P>Using a 56F8257 I am attempting to get a full duplex spi (slave) working. The receive is working and the reply works but the first char is sent twice.</P><P>&nbsp;</P><P>The MC56F825X reference manual section 12.3.4 talks about data being retransmitted. I am using SS and I do not know if this is the problem. I am not sure how to handle this. The data should only be sent when the master clocks the data out.</P><P>&nbsp;</P><P>I am not sure of the sequence of loading the TX, enabling the TX interrupt and waiting for the master to start the TX.</P><P>&nbsp;</P><P>Any suggestions?</P></BODY></HTML> Fri, 27 Jul 2012 05:55:12 GMT barbercolman 2012-07-27T05:55:12Z Full duplex https://community.nxp.com/t5/ColdFire-68K-Microcontrollers/Full-duplex/m-p/183574#M7592 <HTML><HEAD></HEAD><BODY><P>Using a 56F8257 I am attempting to get a full duplex spi (slave) working. The receive is working and the reply works but the first char is sent twice.</P><P>&nbsp;</P><P>The MC56F825X reference manual section 12.3.4 talks about data being retransmitted. I am using SS and I do not know if this is the problem. I am not sure how to handle this. The data should only be sent when the master clocks the data out.</P><P>&nbsp;</P><P>I am not sure of the sequence of loading the TX, enabling the TX interrupt and waiting for the master to start the TX.</P><P>&nbsp;</P><P>Any suggestions?</P></BODY></HTML> Fri, 27 Jul 2012 05:55:12 GMT https://community.nxp.com/t5/ColdFire-68K-Microcontrollers/Full-duplex/m-p/183574#M7592 barbercolman 2012-07-27T05:55:12Z