Error in running sd card example

[ashish_shukla]

Hi all, 

I've a custom board in which I'm trying to interface SD card with nRF52840 chip. 

I've checked connections with multimeter for connectivity and  added pins accordingly in the code. 

I'm adding snippet of the connections. 

 

I get following error with example 

<info> app: FATFS example started.
<info> app: Initializing disk 0 (SDC)...
<info> app: Disk initialization failed.

Can someone plz help in figuring out reason for this error and how to resolve it ? 

[Simonr]

Hi

Previously I've seen this error code when the NRF_SPI_DRV_MISO_PULLUP_CFG was set to pull down in sdk_config.h and has been resolved by setting this define to NRF_GPIO_PIN_NOPULL.

Best regards,

Simon

[ashish_shukla]

This problem was solved. It was a hardware bug - MISO and MOSI pins were swapped in the hardware.