SPI DEFAULT PIN CONFIGURATION

[dkj047]

Hi

What are the default SPI configuration in nrf52840 for miso, mosi, clk, cs? What are default the pull up, pull down configuration ?

Thanks

[haakonsh]

See the reset values of the SPIM's Registers. Pull resistors are controlled by the GPIO peripheral and they are unconnected by default. 

[dkj047]

hi thanks

Does that mean I can set the pull resistors by GPIO ?

[haakonsh]

Yes, use nrf_gpio_cfg to set the configuration of a gpio. Why do you need pull resistors for SPI btw?

[dkj047]

I'm having some power consumption issues while accessing the SD Card through the SPI lines. So just making sure everything is intact with SPI connection in hardware and firmware

[haakonsh]

Then I suggest you open up a new ticket for that issue where you give us as much information as possible, as the current post is about SPI configuration and it being sufficiently answered :) 

[dkj047]

Thanks but the problem seems to be with the sd card, multiple sector write consuming more current. I don't think that is anything to do with nordic. That's why not posting about sd card issue.