spi clock problem

Question

Hi, 
 I'm trying to use winbond spi flash (w25q64fv) 
 but i have a problem with spi as you can see in below image clock stop before receiving data from spi flash, do you have any idea why??? 
 
 here is what should i see based on datasheet 
 
 here is my code for spi_master_init() 
 static void spi_master_init()
{
 uint32_t err_code = NRF_SUCCESS;

 // Configure SPI master.
 spi_master_config_t spi_config = SPI_MASTER_INIT_DEFAULT;

	spi_config.SPI_Pin_SCK = SPIM0_SCK_PIN;
	spi_config.SPI_Pin_MISO = SPIM0_MISO_PIN;
	spi_config.SPI_Pin_MOSI = SPIM0_MOSI_PIN;
	spi_config.SPI_Pin_SS = SPIM0_SS_PIN;

	spi_config.SPI_CONFIG_CPHA	= SPI_CONFIG_CPHA_Leading;
	spi_config.SPI_CONFIG_CPOL	= SPI_CONFIG_CPOL_ActiveHigh;
	
	spi_config.SPI_Freq = SPI_FREQUENCY_FREQUENCY_K500;
	
 spi_config.SPI_CONFIG_ORDER = SPI_CONFIG_ORDER_MsbFirst;
	
 err_code = spi_master_open(SPI_MASTER_0, &spi_config);
 APP_ERROR_CHECK(err_code);

 // Register event handler for SPI master.
 spi_master_evt_handler_reg(SPI_MASTER_0, spi_master_0_event_handler);
}

void spi_master_0_event_handler(spi_master_evt_t spi_master_evt)
{
	// nothing
}
 
 And here is my code for reading Status Register 1 (w25q64fv) 
 uint8_t readSR1() 
{ 
	uint8_t rx_data = 0x00;
	uint8_t tx_data[2] = {0x05, 0xff};
	
	spi_master_send_recv(SPI_MASTER_0, tx_data, 2, &rx_data, 1);
	
 return rx_data;
}

nszmnsky · Accepted Answer

I haven't used your flash, and I have only browsed the datasheet. Is it possible that the 0x05 should read register 1 would return all zero's? Try changing command to 0x90 to read the Manufact./Dev. ID (looks like would also need to change code to read 6 bytes) and see if you get correct data out. 
 I'd also suggest double checking pins - MOSI connected to DI, MISO to DO, and that /WP and /HOLD are pulled high.