[Energia Library] Petit FatFS SD Card Library

[bluehash 1,581]

Thanks Calinp. Could you update the first post of this thread with a link to the latest version post. Makes it easier for members to find.

[sirri 28]

Can you please give a simple "writing" example for this library?

Thanks,

Sirri

[bluehash 1,581]

Can you please give a simple "writing" example for this library?

Thanks,

Sirri

See Calinp post above mine. There is an example in the package.

[sirri 28]

See Calinp post above mine. There is an example in the package.

Thanks, i have seen the sample but it looks quite complicated :/  I will try it soon though.

[sirri 28]

 

I have formatted my SD Card to FAT file system 

My pin connections are as below (checked in the petit fatfs libray)

(and 10 for the CS)

I have pasted t_read and t_write .txt files into the sd card..

P.S. My 16MHz Crystal is not soldered is this an issue for this task?

 

  uint8_t data;

  uint8_t _SCLK = 7;

  uint8_t _MOSI = 15;

  uint8_t _MISO = 14;  //defaults on HW SPI pins

 

I am getting this message on serial monitor and so when i check my sd card i see that t_write is still blank..

 

Press button to start...

 

Open a test file (t_read.txt).

 

Failed with rc=6

[calinp 24]

Hi Sirri,

 

From the pictures I think you are using an SD adapter that have level shifting so it can interface to 5V microcontrollers (like Arduino).

This will not work, because the MSP430 is a 3.3V device and the voltage levels from the card will be to low.

Try to connect the card directly using the first method from http://www.43oh.com/2011/02/five-cheap-breadboard-prototyping-tips-and-tricks-list-2/

( this is what I used )

 

Regards,

Calin

[sirri 28]

Hi Sirri,

 

From the pictures I think you are using an SD adapter that have level shifting so it can interface to 5V microcontrollers (like Arduino).

This will not work, because the MSP430 is a 3.3V device and the voltage levels from the card will be to low.

Try to connect the card directly using the first method from http://www.43oh.com/2011/02/five-cheap-breadboard-prototyping-tips-and-tricks-list-2/

( this is what I used )

 

Regards,

Calin

Hi Calin,

But there is also +3.3V just above +5V..  What about connecting USB 5V to there (3.3V and also 5V) ? Will that burn something? : )

Thanks,

Sirri

[calinp 24]

I looked again the picture and there is no need to supply 5V from USB to the SD board.

Try with FatFs.begin(cs_pin,16);   this will lower the SPI clock 

Check if your Energia/hardware/msp430/libraries/SPI/utility/usci_spi.cpp  and  Energia/hardware/msp430/cores/msp430/usci_isr_handler.c  files are the same as the ones in github.

 

Calin

[sirri 28]

I looked again the picture and there is no need to supply 5V from USB to the SD board.

Try with FatFs.begin(cs_pin,16);   this will lower the SPI clock 

Check if your Energia/hardware/msp430/libraries/SPI/utility/usci_spi.cpp  and  Energia/hardware/msp430/cores/msp430/usci_isr_handler.c  files are the same as the ones in github.

 

Calin

 

I have checked usci_spi.cpp and usci_isr_handler.c and i was suprised that they are really changed in github. i have replaced my files with the ones in github.

However it still doesn't work : /

Here is the result when i test the code (attached image)

Sirri

[sirri 28]

i will be very happy if someone helps. i want to do "datalogging"

[bluehash 1,581]

can you connect the SDCard directly to the LP without using your breakout board?

[sirri 28]

can you connect the SDCard directly to the LP without using your breakout board?

i can try.. will it work that way?

[bluehash 1,581]

It should. I'm not sure what your current bread board is doing.

[sirri 28]

It should. I'm not sure what your current bread board is doing.

ok, thanks bluehash, i will try it tomorrow evening and tell you the results.

[sirri 28]

@@bluehash ; i guess you are suggesting me to use this method:

 

http://www.43oh.com/2011/02/five-cheap-breadboard-prototyping-tips-and-tricks-list-2/

(number 1 : 1. SDcard breakout with headers)