How to write SDcard with fatfs on different pin.

[y001]

Hi,

I am using fatfs of nRF5_SDK_15.0.0_a53641a.

I am writing a program with keil.

I am currently doing SPI communication with BLENanov2(nRF52832) and SD card with fatfs. 

#define SDC_SCK_PIN     2   ///< SDC serial clock (SCK) pin.
#define SDC_MOSI_PIN    29  ///< SDC serial data in (DI) pin.
#define SDC_MISO_PIN    30  ///< SDC serial data out (DO) pin.
#define SDC_CS_PIN      28  ///< SDC chip select (CS) pin.

I tried writing fatfs by SPI communication with the pin setting as above and it was possible to write without problem.

At this time, in sdk_config

// <e> SPI0_ENABLED - Enable SPI0 instance
//==========================================================
#ifndef SPI0_ENABLED
#define SPI0_ENABLED 1
#endif
// <q> SPI0_USE_EASY_DMA  - Use EasyDMA
 
#ifndef SPI0_USE_EASY_DMA
#define SPI0_USE_EASY_DMA 1
#endif
// </e>
// <e> SPI1_ENABLED - Enable SPI1 instance
//==========================================================
#ifndef SPI1_ENABLED
#define SPI1_ENABLED 0
#endif
// <q> SPI1_USE_EASY_DMA  - Use EasyDMA
 
#ifndef SPI1_USE_EASY_DMA
#define SPI1_USE_EASY_DMA 1
#endif
// </e>
// <e> SPI2_ENABLED - Enable SPI2 instance

It has become like.

Here,SPI communication will be done with a different pin

#define SDC_SCK_PIN     8   ///< SDC serial clock (SCK) pin.
#define SDC_MOSI_PIN    6  ///< SDC serial data in (DI) pin.
#define SDC_MISO_PIN    7  ///< SDC serial data out (DO) pin.
#define SDC_CS_PIN      3  ///< SDC chip select (CS) pin.

When I set the pin like this,I can not write SDcard.

Please tell me how to resolve.

Thank you.

[awneil]

y001 said:

,I can not write SDcard

So what debugging have you done to find where it's going wrong?

Have you confirmed that all those pins are available for use?

Use 'Insert Code' to properly post source code:

[Jørgen Holmefjord]

Please make sure you do not initialize UART or NRF_LOG in the application. The pins P0.05-P0.08 is by default used for UART interface on the nRF52-DK.

[y001]

Thank you for reply!

The chenged part is only pin number.

After changing the pin, I used the LED to check if it is usable.

Should I show all thw contents of main.c?

[y001]

Thank you for reply!

It is written that the nRF52DK you are using can be used with SPI for P0.06-P0.08,but should I change the setting?

I would be happy if you let me know if you know the solution.

[Jørgen Holmefjord]

Yes, any GPIO of the nRF52832 can be used for UART interface. Did you check your code and make sure that you do not initialize UART of NRF_LOG with UART backend on the same pins?

Can you upload your main.c and sdk_config.h files?