2 SPI masters

Question

Hello, 
 
 I am needing to use two separate SPI masters, but I'm running out of pins. Are all of the pins compatible with SPI or are there some I should avoid. I'm thinking of taking the pins used by the buttons, is this a good idea and how do I remove the buttons from devicetree? 
 
 Thanks in advance!

Håkon Alseth · Accepted Answer

Hi, 
 
 Sorry, the former config still left uart1 in a "secure" state. 
 Try these: 
 CONFIG_TFM_SECURE_UART=n
CONFIG_TFM_LOG_LEVEL_SILENCE=y

If it still does not work, could you share the updated .config? 
 
 *edit* forgot the last question: 
 mmelv said: I think the problem might be that I'm using pins that are default for buttons for my SPI MISO, MOSI, and SCK. I think the asset tracker has button handlers whereas my other implementation that the code works on doesn't. How can I remove the buttons and modify the asset tracker to work without buttons? I'm unable to do /delete-node/ buttons. 
 You can delete the buttons by setting this in your overlay file: 
 /delete-node/ &{/buttons}; 
 
 You may also have to set CONFIG_DK_LIBRARY=n 
 
 Kind regards, 
 Håkon

2 SPI masters

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