topic Re: LPC 1769 Using SSP SSEL as GPIO in LPC Microcontrollers https://community.nxp.com/t5/LPC-Microcontrollers/LPC-1769-Using-SSP-SSEL-as-GPIO/m-p/520967#M3911 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by LabRat on Wed Aug 20 09:22:47 MST 2014</STRONG><BR /><HR /><SPAN style="color: #0000ff;"><STRONG>Quote: Scavmaster</STRONG><BR />Can I use SSEL1 as GPIO whilst using SSP1?</SPAN><HR /><BR /><BR /><SPAN>Of course. PINSEL0 is setting pin function of P0.6 (default is 0 = GPIO).</SPAN><BR /><BR /><SPAN>Probably your SSP init or board init is setting this pin function to SSEL1&nbsp;&nbsp; :) </SPAN><BR /><BR /><BR /></BODY></HTML> Wed, 15 Jun 2016 17:45:07 GMT lpcware 2016-06-15T17:45:07Z LPC 1769 Using SSP SSEL as GPIO https://community.nxp.com/t5/LPC-Microcontrollers/LPC-1769-Using-SSP-SSEL-as-GPIO/m-p/520966#M3910 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by Scavmaster on Wed Aug 20 08:40:09 MST 2014</STRONG><BR /><SPAN>Hi,</SPAN><BR /><BR /><SPAN>I am using LPC1769 SSP1 for SPI communitcation on a AOA Kit Dev. Board.</SPAN><BR /><BR /><SPAN>For now I am only using one sensor which is why I am using the provided SSEL1 and it works just fine.</SPAN><BR /><BR /><SPAN>Due to the project I am working on I need to keep expandability in mind, so I would like to have two SSEL signals in future. </SPAN><BR /><SPAN>I was thinking about using the provided SSEL1 for as long as possible as it is working right now and then use a second GPIO pin for the second slave select I will generate in future. Therefore of course I need to disable the provided SSEL1 function and use the same pin as GPIO so I can have my own slave selection working, right?</SPAN><BR /><BR /><SPAN>The data sheet says P0.6 can be used for four functions one of which is GPIO and another SSEL1. Nothing mentioned about a forced function in case of using SSP as far as I can tell.</SPAN><BR /><BR /><SPAN>Still I am struggeling using SSEL1 as GPIO. As soon as I am using SSP module, P0.6 works as SSEL1.</SPAN><BR /><SPAN>I checked my hardware initialization for a couple of times and I am almost certain I am not initializing that pin as SSEL1 but as GPIO.</SPAN><BR /><BR /><SPAN>Am I getting something wrong here? Am I doing something wrong here? Can I use SSEL1 as GPIO whilst using SSP1?</SPAN><BR /><BR /><SPAN>Thanks a lot!</SPAN><BR /></BODY></HTML> Wed, 15 Jun 2016 17:45:06 GMT https://community.nxp.com/t5/LPC-Microcontrollers/LPC-1769-Using-SSP-SSEL-as-GPIO/m-p/520966#M3910 lpcware 2016-06-15T17:45:06Z Re: LPC 1769 Using SSP SSEL as GPIO https://community.nxp.com/t5/LPC-Microcontrollers/LPC-1769-Using-SSP-SSEL-as-GPIO/m-p/520967#M3911 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by LabRat on Wed Aug 20 09:22:47 MST 2014</STRONG><BR /><HR /><SPAN style="color: #0000ff;"><STRONG>Quote: Scavmaster</STRONG><BR />Can I use SSEL1 as GPIO whilst using SSP1?</SPAN><HR /><BR /><BR /><SPAN>Of course. PINSEL0 is setting pin function of P0.6 (default is 0 = GPIO).</SPAN><BR /><BR /><SPAN>Probably your SSP init or board init is setting this pin function to SSEL1&nbsp;&nbsp; :) </SPAN><BR /><BR /><BR /></BODY></HTML> Wed, 15 Jun 2016 17:45:07 GMT https://community.nxp.com/t5/LPC-Microcontrollers/LPC-1769-Using-SSP-SSEL-as-GPIO/m-p/520967#M3911 lpcware 2016-06-15T17:45:07Z Re: LPC 1769 Using SSP SSEL as GPIO https://community.nxp.com/t5/LPC-Microcontrollers/LPC-1769-Using-SSP-SSEL-as-GPIO/m-p/520968#M3912 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by Scavmaster on Thu Aug 21 02:15:19 MST 2014</STRONG><BR /><SPAN>Thanks!</SPAN><BR /><SPAN>It appears I have to check my code again... </SPAN></BODY></HTML> Wed, 15 Jun 2016 17:45:08 GMT https://community.nxp.com/t5/LPC-Microcontrollers/LPC-1769-Using-SSP-SSEL-as-GPIO/m-p/520968#M3912 lpcware 2016-06-15T17:45:08Z