NRF52 spi_master_with_slave

[oliverhu]

currently i am using nrf52 as spi master with an imu as spi slave. based on the sdk code spi_master_with_slave, I write a sample test code to read the register value from the slave. however what i read is always FF no matter what i write to the register. 1.i comment out the buf check and int buff function 2.i set pin0.30 as ss pin and set it low when data are ready to transfer. the code is posted as follow test1.txt

[awneil]

I think the spi_master_with_slave examples is for the case when the nRF chip is being both the Master and the Slave - in a kind of "loop-back" test:

infocenter.nordicsemi.com/index.jsp

What you really want is the case where the nRF chip is just being the Master:

infocenter.nordicsemi.com/index.jsp

[oliverhu]

thank you, awneil. actually i tried Spi_master, the loop-back program ,I connected the mosi with miso. it can work properly.however i need connect the nrf52 with a slave.so I use spi_master_with_slave .according to the thread, i commented out some code like buf check and int buff function. but it still faults out. devzone.nordicsemi.com/.../nrf52-spi_master_with_spi_slave-example-always-faults-out.