SPI slave not working

[deependra]

hi i am trying to setup a connection with CP2130 with nrf51. i am using nrf6310 kit. i flashed the spi slave example into into nrf51. on nrf51 these are the connection pins -> SPIS_MISO_PIN; (pin 20 mapped to p.2.4) SPIS_MOSI_PIN; ( pin 22 mapped to p.2.6) SPIS_SCK_PIN; ( 23 pin mapped to p.2.7) SPIS_CSN_PIN; ( 21 pin mapped to p.2 5) mode 0 , buffer size 4 LSB first

On master side

buffer size 4, mode 0 clock 6mhz , tried with 3mhz , 1.5mhz

i am receiving 4 bytes of 00 00 00 00 instead of actual data on slave program. i put a break point to spi_slave_event_handle(spi_slave_evt_t event) but it seems control is not going in this function.

i am not even receiving DEF char

i tried doing it without soft device but without soft device application does not run.

[deependra]

i checked master lines SCK , MOSI ,CS on scope its working good. i added 7.1us delay after CSN goes low for the data to be clocked out but still no result. i tried using nrf51 as a slave and PSOC 5lp as a master in both the cases no result.

[deependra]

i checked the SEMSTAT register there is no change in that. register value is always zero. please suggest something

[Stian Røed Hafskjold]

Clock frequency of 6 and 3 MHz will not work. Max is 2MHz according to the product spec. Try to lower the speed to 1 MHz or something to be sure. You defined the right board so that the pins are set correctly (define BOARD_NRF6310)? Which SDK version are you using?