topic SPI Chip Select in Kinetis Microcontrollers https://community.nxp.com/t5/Kinetis-Microcontrollers/SPI-Chip-Select/m-p/361445#M18367 <HTML><HEAD></HEAD><BODY><P>I'm using Kinetis MCUs. I wonder if it is possible to connect two SPI slave devices shared the same SS line. One of the SS lines contains a NOT logic gate so I can select the slave device by changing its GPIO value in callback function. Is it possible?</P></BODY></HTML> Thu, 18 Dec 2014 07:18:57 GMT josephchen 2014-12-18T07:18:57Z SPI Chip Select https://community.nxp.com/t5/Kinetis-Microcontrollers/SPI-Chip-Select/m-p/361445#M18367 <HTML><HEAD></HEAD><BODY><P>I'm using Kinetis MCUs. I wonder if it is possible to connect two SPI slave devices shared the same SS line. One of the SS lines contains a NOT logic gate so I can select the slave device by changing its GPIO value in callback function. Is it possible?</P></BODY></HTML> Thu, 18 Dec 2014 07:18:57 GMT https://community.nxp.com/t5/Kinetis-Microcontrollers/SPI-Chip-Select/m-p/361445#M18367 josephchen 2014-12-18T07:18:57Z Re: SPI Chip Select https://community.nxp.com/t5/Kinetis-Microcontrollers/SPI-Chip-Select/m-p/361446#M18368 <HTML><HEAD></HEAD><BODY><P>Hi Joseph，</P><P>After learned your statement, I think this scenario can work out.</P><P>But I don't consider this method is good enough, I will prefer to share SPI_MISO、SPI_MOSI、SPI_SCLK pin, then use the different GPIO as the SS pin to select the external device.<BR />Have a great day,<BR />Ping</P><P></P><P>-----------------------------------------------------------------------------------------------------------------------<BR />Note: If this post answers your question, please click the Correct Answer button. Thank you!<BR />-----------------------------------------------------------------------------------------------------------------------</P></BODY></HTML> Tue, 06 Jan 2015 02:54:29 GMT https://community.nxp.com/t5/Kinetis-Microcontrollers/SPI-Chip-Select/m-p/361446#M18368 jeremyzhou 2015-01-06T02:54:29Z