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Last activity 2017-08-30 09:38:06 +0200 by Martin Børs-Lind flag of Norway

Writing in SD card at fixed time-intervals by reading from ADC

Hi,

I have successfully sampled my signal using SAADC example at a sampling frequency of 10 Hz. I am using a flag in the saadc_callback() function which I read from the main() function and accordingly instruct to write the sampled ... (more)

39
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no
votes
1
answer
Last activity 2017-08-29 10:39:27 +0200 by Jørgen Holmefjord flag of Norway

Changing SD card configuration pins doesn't work on nrf52832

Hi, I am a beginner and trying to understand the SD card example for nrf52 DK. When I change the pins from the given configuration

#define SDC_CS_PIN ARDUINO_10_PIN
#define SDC_MOSI_PIN ARDUINO_11_PIN
#define SDC_SCK_PIN ARDUINO_13_PIN
#define SDC_MISO_PIN ARDUINO_12_PIN

to the following ... (more)

111
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4
votes
1
answer
Last activity 2017-08-16 09:51:35 +0200 by Nicolas Brunner flag of Switzerland

FatFs example SDK14.0.0 not working

I'm using the PCA10056 with a SD card connected via P1.12-P1.15. When i use the FatFs example of SDK13.0.0, it's works fine. but when i use the FatFs example of SDK14.0.0, the ... (more)

31
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no
answers
Last activity 2017-07-22 12:48:29 +0200 by Khan

Different master instances for two slaves in nrf51422

Hi All,

I am using nrf51422, SDK 12.0.0, an SPI OLED display 128x32, and an SD card.

I want to interface an OLED display and an SD card onto the nrf51422. Although my SD card and the OLED ... (more)

167
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no
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no
answers
Last activity 2017-03-20 14:12:45 +0200 by Ankush

f_mkfs returns FR_DISK_ERROR

Hi all,

I my application I am interfacing SD card with nrf52 using FATFS file system. I am observing some weird behavior while doing this. I have two SD cards, one of 2GB sandisk and another of 8 GB Transcend ... (more)

168
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2
votes
1
answer
Last activity 2017-02-06 11:18:03 +0200 by Sigurd flag of Norway

Could not find SD Card (SDCard) library and example in Keil IDE after nRF5 SDK 12.2 Keil4 installation

Hi,

I downloaded the nrF5 SDK V12.2 from: https://www.nordicsemi.com/eng/Produc...

after unzip, I could see the SDCard library under "<Nordic Project>\nRF5_SDK_12.2.0_f012efa\components\libraries\sdcard"

I am a Keil user, so I ran ... (more)

323
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no
answers
Last activity 2017-01-17 16:10:18 +0200 by Ankush

Code getting restarted after getting error as FR_DISK_ERR

Hi,

I am working on interfacing SD card with nrf52. I am sampling SAADC at 1000 sps and trying to write over SD card as well as sending over BLE. Both operations are working fine but after FR_DISK_ERR , entire code ... (more)

568
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1
vote
1
answer
Last activity 2017-01-10 08:44:01 +0200 by Ankush

How to use DMA in NRF52 while writing on SD card, while BLE is also operating?

Hi,

In my application of interfacing SD card with nrf52, I am using SAADC to sample the input signal at 1000 samples per seconds. These samples I am combining in 84 packets each consisting 12 samples and 20 bytes. In ... (more)

660
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2
votes
2
answers
Last activity 2017-01-04 15:05:03 +0200 by Ankush

How to open and access files in directory other than root directory in fatfs ?

Hi ,

I am working interfacing SD card with nrf52 using fatfs example given in SDK 12.0.0. While writing to text file created in root directory, code gets stopped as size of file becomes greater than 300kB. Is it ... (more)

321
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1
vote
no
answers
Last activity 2016-12-16 08:53:34 +0200 by Ankush

How to Write to SD Card at high rate ?

Hi All,

I have just started working on interfacing SD card with nrf52 using SDK 12.0. I have to write to SD card at a rate of 84 packets per second and each packet consists of 20 bytes. I ... (more)

65
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no
votes
1
answer
Last activity 2016-12-12 14:36:22 +0200 by Ole Bauck flag of Norway

f_gets function in nef52 12.0 sdk issue

Hi ,

I am trying to interface SD card with nrf52. For this I am using fatfs example of new 12.0 sdk. I can able to write the data to file but when I am taking the data from terminal ... (more)

374
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1
vote
no
answers
Last activity 2016-12-11 12:31:36 +0200 by Ankush

unable to read the data from file using f_read in fatfs example of nrf52

Hi,

I am interfacing micro SD card with nrf52 using fatfs example in sdk 12.0. As I am beginner, first I wanted to perform operations like read, write, delete and some basic functions with files. I am able to ... (more)

343
views
no
votes
1
answer
Last activity 2016-09-08 09:47:14 +0200 by Bart

NRF52 won't initialize micro-SD card into SPI mode

Hello people,

I'd like to use the NRF52832 (QFAAB0) / PCA 10040 / S132 development board as a data logger. For that I soldered a micro-sd card reader and started using the code found in another topic.

Any attempt to initialize ... (more)

483
views
no
votes
1
answer
Last activity 2016-02-22 13:20:12 +0200 by Martin Børs-Lind flag of Norway

MP3 decoding

Hi,

Can nRF52 do MP3 decoding with SD card? Any example library we can use? thanks.

2k
views
10
votes
2
answers
Last activity 2014-09-29 11:02:29 +0200 by Salman

NRF51822 SD Card [closed]

Has anyone been able to get the NRF8122 working with an SD card, using SPI or any other means?

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