is nrf52 dk support 3 wire spi interface

[pawan_v61]

hello i am new to spi, i am doing project on 3 wire spi interface. I am using 3 wire interface as Sclk,ssn,MOSI pins only , I am not using MISO pin .I am tested spi example code but does not works well.so can any one tell me that nrf52 dk -spi support 3 wire interface ( with out using MISO pin). The issue is the serial clock was not generates signals .For sending data the function "nrf_drv_spi_transfer(&spi, m_tx_buf, m_length, m_rx_buf, m_length) " was used.Every time ssn pin is low to send the data & it is set to high after sending the data.Here i am using AD9837 module as slave & it works on spi interface only.I am facing 1 issue i.e., as follows. Here the data i hexa decimal but in the example code the tx buffer must be character type

[RK]

Yes it supports it. You just set the MISO pin to -1 and even if you don't and it uses a pin, you just ignore the data.

[pawan_v61]

are you sure the spi transfer data successfully even though I aam not using Miso pin(ie., the master was not receiving any buffer data).In the data sheet the data is transfer when processor generates start & stop tasks . The processor generates start task when data is transfer from master to slave. The processor generates stop task when master receive data from slave to master.But I am not connecting MISO pin so there is no scope of receiving the slave data to master that's why there is no scope of generating stop task. Can you please confirm the processor will generate stop task & data send succesful from master to slave even though there is no data received from slave to master.