nrf52840 spi not working

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bobr530
 
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nrf52840 spi not working

Post by bobr530 »

QSPI Flash example program works (internal spi) but spi FRAM and spi MAX31856 Universal Thermocouple Amplifier example programs don't work (temperature is always 0.0) so the question is are there known problems with SPI on the ItsyBitsy nrf52840 Express programmed in Arduino?

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dastels
 
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Re: nrf52840 spi not working

Post by dastels »

What are your connections like? Can you post clear closeups?

Dave

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bobr530
 
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Re: nrf52840 spi not working

Post by bobr530 »

Thanks for the quick response!

My MAX31856 and ItsyBitsynrf52840 are on headers on a pcb, it doesn't make a useful picture.

If there are known issues with isp on the ItsyBitsy, then I wll purchase Ic2 thermocouple amplifiers. If you are pretty sure the isp on the ItsyBitsy does work then I will continue troubleshooting. I have to make a quick decision.

I am using the "hardware isp option" pins 23, 24, 25, and 19 as the CS

next I will try a fresh new pair boards and use jumpers so I can move pins around.

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bobr530
 
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Re: nrf52840 spi not working

Post by bobr530 »

in the previous reply, I meant spi NOT isp!

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