topic Re: SPI Problem in LPC Microcontrollers

SPI Problem

lpcware — Wed, 15 Jun 2016 17:11:08 GMT

Content originally posted in LPCWare by prismprojection on Sun Nov 30 18:41:41 MST 2014
I'm trying to configure PIO0_8/ADC0_0/TDO as a SPI data pin however it doesn't seem to be working (clock works on another pin). Is there a problem with using this pin for SPI or could I be unknowingly putting the part (LPC1547) in boundary scan mode? How can I be sure the part isn't in a debug/boundary scan mode?

Re: SPI Problem

lpcware — Wed, 15 Jun 2016 17:11:09 GMT

Content originally posted in LPCWare by fjrg76 on Fri Dec 05 17:33:50 MST 2014

Quote: prismprojection
I'm trying to configure PIO0_8/ADC0_0/TDO as a SPI data pin however it doesn't seem to be working (clock works on another pin). Is there a problem with using this pin for SPI or could I be unknowingly putting the part (LPC1547) in boundary scan mode? How can I be sure the part isn't in a debug/boundary scan mode?

I think you are trying to get something from pin PIO0_8 when (according to your text) it is not part of the SPI peripheral. (MOSI stands for Master Out, Slave In.)

Re: SPI Problem

lpcware — Wed, 15 Jun 2016 17:11:10 GMT

Content originally posted in LPCWare by R2D2 on Fri Dec 05 18:05:52 MST 2014
SSP0/1 pins can be assigned with SWM "movable functions"...

So there's no reason why it shouldn't work, if you don't connect it to JTAG :)