nRF51822 MISO problem

[chimaera]

hi i make spi connection between nrf and lpc1788 . nrf as slave and lpc1788 as master. i got data from lpc but when i send data to lpc nothing send . when using another nrf az master conection work in both side, i change mosi pin but not working. Using the SPI slave example as an app.

spi master config

SPI_bt->Control(ARM_SPI_MODE_MASTER | ARM_SPI_CPOL0_CPHA0 | ARM_SPI_MSB_LSB | ARM_SPI_SS_MASTER_UNUSED | ARM_SPI_DATA_BITS(8), 125000);

code on lpc {

// CS low

bt_ON;

GUI_Delay(50);

SPI_bt->Send("Hello",5);

SPI_bt->Receive(st,10);

while(SPI_bt->GetStatus().busy);

GUI_Delay(50);

//CS high

bt_OFF; }

j-link RTT viewer loge

0> Received 625: Hello

0> Transfer 625: N o r d ic

i check lpc spi with another lpc slave ,is work. tnx,

[bjorn-spockeli]

Hi Chimaera, which SDK (version number) is the SPI Slave Example that you're using from? Can you attach a logic trace of the MISO, MOSI , CLK and CS pins?

[chimaera]

hi bJorn. thanks for your attention. my problem solved . i use examples pack 11.0.0.2 alpha. every thing work good in nRF51822 . my problem from the lpc1788 board. i use ssp1 . miso set on 0_12 and is same for USB2 PWREN , connected to LM3526-L and 5V with 24K resistor. i changed the lpc pin and every thing working perfect.

thanks again.