nRf51822 SPI Slave not working properly

[Brajesh]

Hi All,

I am facing a strange problem. The scenario is that nRF51822 is acting as SPI SLave while MSP430 is acting as SPI Master. Using the SPI slave example as an app I'm configuring nRF as Slave. And running an App on MSP to send a byte on MOSI line. Problem is the data that i get from Master in RX_BUF of slave is not matching with the data what Master is actually sending but the data sent in response to Master from Slave is matching. Master is getting a data (0xCF) that Slave is sending, if there would be any problem in connectin set up the Slave will send either 0xAA/0x55. I dont get this strange problem , Can anyone help me out over here ? Brajesh

[Daniel Tralamazza]

I ran into similar issues, the 7100 ns delay is the key here. Make sure you have the proper delay between chip select and clock. Ofc both need the same mode, in my case mode1.