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Hopefully this will help??

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Hello all,

I am passing a string to a function and doing some operation on that string. Basically I am stripping out strings within the original string. Using a comma separation, I pass the strin ...

I have found that in sector 0x18 the files have their lengths in bytes stored as here
http://www.ecgf.uakron.edu/grover/web/ee470/labs/SDCardMap.pdf
I have managed to read this whole sector into the ...

I have just checked using Hexedit. The bytes appear as they should !!
But taking this one step further I have formatted the card, created a text file and found the start sector for the file. Multip ...

Success,

I have successfully ( I think ) written the the SD Card. Problem now is how to get the data off the card. I would like to write some custom VB code to read the raw data from the card. D ...

Have used an OR gate to raise the level back to 5V for the PIC. This is the output from the OR gate when I send the mmc_spi init command (DO line on top for reference)

http://i1143.photobucket.com ...

Hi,

Pull up added to DO line (from SD Card). Data now seen on pic pin (but no response yet) probably difference in voltage, would a Transistor switch work, I understand the SPI bus can operate at ...

Nt quite sure I follow you 100%, are you saying I need the level conversion from 3.3V SD card to 5V pic before the card will transmit anything? I am not getting anything from the card (3.3V from the S ...

Granted,
A level conversion would be required, but have probed on the output (from SD Card) line and there is not even 3.3 V there, so level conversion will not work.

Do my scope output even look ...

Hello all,

I am trying to add an SD Card to my PIC design. I currently have a board with the correct voltage levels connected to to SD Card (3.3V) which are connected to pins C3,C4,C5 and B3 (I am ...

I have tried this encryption on a PIC16F687 using the following:-
in encode and decode functions i have added

return data;

in my main

char testdata[8]={1,2,3,4,5,6,7,8};
c ...

I have managed to get my GLCD working 80x32 lines Bolymin, with graphics and custom alphabets etc.
I would like to know if it is possible to invert the X and Y lines for the LCD. Basically I would ...

OK, so now I have put a scope on the Data and RS lines. I know that the data is being clocked into the LCD and that the RS is correct, low for command high for data. I see this happening on the scre ...

I know I can write commands to the screen because I am able to change the contrast of the rectangle that is displayed. But I cannot send data to the screen.
I have set the initial line to 0x40, set ...

What does your code output?
How does your code know when it has a string to read from your serial port?
Are there any other serial messages sent from your GPS device?