Fatsfs example (SDK 14) does not works (Mount Failed)

[Renato Silva]

I am trying to test the fatfs example (SDK14) using the 10056 DK.

I do nothing modification and it results in...

<info> app: FATFS example started.
<info> app: Initializing disk 0 (SDC)...
<info> app: Capacity: 59400 MB
<info> app: Mounting volume...
<info> app: Mount failed.

I saw that the problem occurs in this line, but I dont know tha reason.

NRF_LOG_INFO("Mounting volume...");
ff_result = f_mount(&fs, "", 1);
if (ff_result)
{
NRF_LOG_INFO("Mount failed.");
return;
}

In sdk_config.h I chenged the #define NRFX_SPIM_MISO_PULL_CFG to 0 and added a pulldown in the MISO.

Anyone has this same problem?

[Turbo J]

MISO needs a pullup according to SD spec. A 64GB card would require ExFat support - which may not be enabled by default in FATFS. Try a <=32GB card, these are shipped with FAT32 filesystem.

[Renato Silva]

Hi Turbo J,

Now I am using a 32GB card (FAT32).

In the sdk_config.h I have the follow config

// <o> NRF_SPI_DRV_MISO_PULLUP_CFG - MISO PIN pull-up configuration.

// <0=> NRF_GPIO_PIN_NOPULL
// <1=> NRF_GPIO_PIN_PULLDOWN
// <3=> NRF_GPIO_PIN_PULLUP

#ifndef NRF_SPI_DRV_MISO_PULLUP_CFG
#define NRF_SPI_DRV_MISO_PULLUP_CFG 3
#endif

Furthermore, I am using a 1k resistor as pullup on MISO pin.

With these steps I couldnt to do the example works.

When I run the example I have the follow messages.

<info> app: FATFS example.
<info> app: Initializing disk 0 (SDC)...
<info> app: Capacity: 30436 MB
<info> app: Mounting volume...
<info> app: Mount failed.

[Einar Thorsrud]

Hi,

What is the return code from the call to f_mount() in main.c? This again comes from find_volume() in ff.c. Looking at the return code or stepping through the find_volume() function should give some insight into what is happening.

[Renato Silva]

I resolved this question when I formated the sdcard to FAT32.

Now, I am trying add this example in my custom solution I am have the follow error after add the paths and files.

nrf_log_frontend.c:92:35: error: unknown type name 'nrf_log_module_dynamic_data_t'

I am trying use variables and strutuctures that are in nrf_log_internal but the Segger tell me that the types and variables declared in this file doenst exists. I dont know if I forgot to set any flag into sdk_config.h

Ps. I already added the path to the file where is declared the "nrf_log_module_dynamic_data_t"

 variable.

[Einar Thorsrud]

I see. No wonder it did not work earlier then.

Please make a new question/thread for the log issue, as keeping unrelated topics to separate threads make it much easier to keep track of things.