sample fat_fs

[TF mulder]

Hi,

I'm trying the  sample fat_fs  on the nRF5340 DK

1) It does build, but there is awarning

CMake Warning at D:\nRfConnect\v1.8.0\zephyr\CMakeLists.txt:722 (message):
No SOURCES given to Zephyr library: drivers__disk

2) looked with the debugger: in the main() it reaches the  LOG_ERR("Storage init ERROR!");

void main(void)

if (disk_access_init(disk_pdrv) != 0) {

LOG_ERR("Storage init ERROR!");

 

Could you please comment on the above 2 points ?

What steps should i make to have a SD-card running,  is using sample fat_fs the way to go ?

Best Regards,

Theo

[TF mulder]

Hi Simon,

Thanks for the help.

i added  nrf5340dk_nrf5340_cpuapp.overlay   with the same content as nrf52840_blip.overlay

(added in VisualStudioCode  at input files,  the tool places the file   nrf5340dk_nrf5340_cpuapp.overlay  in the  fat_fs-directory, not in the fat_fs/boards directory)

i placed the same content from nrf52840_blip.overlay   into the  nrf5340dk_nrf5340_cpuapp.overlay

it showed 2 problems:   wiggle-line under &spi1  and a wiggle-line under sdhc@0

I altered &spi1 into &spi2   now the 2 problems where gone.  so did a prestine-build, and looked in the zephyr.dts

in there i found:

spi2: spi@b000 {
#address-cells = < 0x1 >;
#size-cells = < 0x0 >;
reg = < 0xb000 0x1000 >;
interrupts = < 0xb 0x1 >;
status = "okay";
label = "SPI_2";
compatible = "nordic,nrf-spim";
sck-pin = < 0x2f >;
miso-pin = < 0x2e >;
mosi-pin = < 0x2d >;
cs-gpios = < &gpio0 0x11 0x0 >;
sdhc0: sdhc@0 {
compatible = "zephyr,mmc-spi-slot";
reg = < 0x0 >;
status = "okay";
label = "SDHC0";
spi-max-frequency = < 0x16e3600 >;
};

So now the pins ..   does sck-pin <0x2f> means   47 -> 47-32=15   so P1.15    correct??   (and so on for 0x2e, 0x2d)

in the nrf5340 dk schematic i find   p1.15  on GPIO_IF2 D13  ... so ok 

But now the cs-gpios   &gpio0 0x11 0x0        does this mean gpio0   -> P0.00    or  0x11->17-> P0.17  

P0.00 would be OK  (GPIO_IF3 / d14)   but  P0.17 is QSPI_clk (SB21)  so ocuppied.

i will try  to connect a sd-card on the pins  P1.15, P1.14, P1.13   and the CS on P0.00  ..

Then bonus question:  could i alter the pins to different location?, how is that being done in the software ?

Looking forward on your comments Simon,  thanks.

Best Regards,

Theo

[TF mulder]

Hi Simon,

Thanks again for the valuable info.  (definitely more studying on my side :-)

I connected all  and using p0.17 for the cs., and double, double checked.

unfortunately, no cigar.., still not working..   it still hits the LOG_ERR("Storage init ERROR!");  (as with my original question 2) )

maybe relevant to mention .. ??

in de 'input-files'  there are a few problems signaled:

-in the file 'nrf5340dk_nrf5340_cpuapp.dts'  a wiggle-line (at line-13)   compatible = "nordic,nrf5340-dk-nrf5340-cpuapp";

-in the file ''nrf5340_cpuapp_qkaa.dtst 3-wigglles (at line 24)

compatible = "nordic,nRF5340-CPUAPP-QKAA", "nordic,nRF5340-CPUAPP", "nordic,nRF53", "simple-bus";

 wiggles under all exept "simple-bus".

--

then to be sure the connections i made to the sd-card  ( im using: https://www.sparkfun.com/products/544 )

p1.15  connected to 'sck'

p1.14 connected to 'DO'

p1.13 connected to 'DI'

p0.17 connected to 'CS'

vdd   connected to 'VCC'

gnd connected to 'GND'

Please your comments again.. (lets nail this :-)

Best Regards,

Theo

[Simon]

If you don't figure it out I will try to get ahold of an SD card reader, so I can actually run and debug the program myself.

[TF mulder]

When i switch off the power of the board, and then connect the CS of the card to the GND,  and power up the board, the the sc-card gives a response !!    When after that i deconnect the cs from the GND and push reset then it does not respond(errors). as te be expected. When i then connect the CS to the ground again and give the board a reset, then it does not respond(Errors).   

So only after putting the board power OFF, then on (with the CS   to GND) then the sd-card response.

So where is the cs-gpios going to ??

[TF mulder]

Hi Simon,

I would like to let you know:  i have now managed to write some data to the SD-card and read it back.

using disk_access_write(),  disk_access_read()

I will add a seperate gpio-pin to be used as CS for the SdCard.

==>  but actualy the question:  cs-gpios going to ??   would be nice to know..,  how, that could/should be resolved.  (But now at least im not blocked by this issue)

To have writing a file onto the SD-CARD, that a PC will understand needs some more then 

disk_access_write(),  disk_access_read()  Correct?

What do i need to look into to have data to be written onto the SD-card? , such that the PC doe understand.

Thanks  Simon for the help.

I'm looking forward to your reply

Best Regards,

Theo

[Simon]

Ah, I'm really sorry for not seeing this earlier. Try using another pin than P0.17 for CS. If you take a look at nRF5340 DK Hardware --> External memory you can see that P0.17 is connected to SCLK of the nRF5340DK onboard flash (to use it, you must cut SB11 and short SB21). Try to use another pin like P1.12 for CS.

If you turn the nRF5340 DK upside down, you can see the GPIOs that are occupied by onboard functionality.

Best regards,

Simon

[TF mulder]

Hi Simon,

Thanks..

I did change the pin number before.., but just checked again,

this time (i tried manny more pins before),   i used cs-gpios = <&gpio0 10 GPIO_ACTIVE_LOW>;

But the P0.10 pin is just not active its floating.

And in the (Visual Studio Code) under DeviceTree/Gpio  neither &gpio0, nor &gpio0 is showing any signal that could reate to  cs-gpios.

Best Regards,

Theo

[TF mulder]

Hi Simon,

Got It now :-)

I was looking how to control GPIO pins in general, and came across this tiket:

https://devzone.nordicsemi.com/f/nordic-q-a/67320/unsupported-pin-error-when-using-pins-on-port-1-of-the-nrf52840dongle/275624#275624

Now i added in the fat_fs sample:  main.c file

gpio0dev = device_get_binding("GPIO_0");

And behold... the    cs-gpios  on P0.10  is now working !!

But still ... in the (Visual Studio Code) under DeviceTree/Gpio  neither &gpio0, nor &gpio0 is showing any signal that could relate to  cs-gpios

Thanks Simon for all the help.

Remains this (new)question:   

To have writing a file onto the SD-CARD, that a PC will understand needs some more then 

disk_access_write(),  disk_access_read()  Correct?

What do i need to look into,  to have data to be written onto the SD-card? , such that the PC does understand.

Best Regards,

Theo

[Simon]

TF mulder said:

And behold... the    cs-gpios  on P0.10  is now working !!

I'm happy you finally made it work

TF mulder said:

Remains this (new)question:   

To have writing a file onto the SD-CARD, that a PC will understand needs some more then 

disk_access_write(),  disk_access_read()  Correct?

What do i need to look into,  to have data to be written onto the SD-card? , such that the PC does understand.

Would you be able to open a new ticket and ask about this? Since the initial issues ("No SOURCES given to Zephyr library: drivers__disk" and "Storage init ERROR!") seems to be resolved.

Best regards,

Simon