USB to USB flash Drive File Copier

[newbie]

i have a data sheet of the display...some of the characters of the are found in there but some aren't. these reason i have my eyes set on these weird character is because i think they would be the key to sorting the file names since the appear in between them.basing on the pictures above, do you have any idea on how i can sort the file names so that i can print only one file name per line? ive been trying joe's suggestion but so far i have no success.

[Archangel]

i have a data sheet of the display...some of the characters of the are found in there but some aren't. these reason i have my eyes set on these weird character is because i think they would be the key to sorting the file names since the appear in between them.basing on the pictures above, do you have any idea on how i can sort the file names so that i can print only one file name per line? ive been trying joe's suggestion but so far i have no success.

Hi Newbie,
Sometimes weird characters are due to the clock or baud being off. They can occur if the LCD's power is not bypassed adequately with a capacitor. What I do to check things like this is to make a counter loop which outputs a count from 0 to xxx and also outputs a space after and also outputs the counter variables actual count, and I watch for the character to appear and see what number makes it so.

[Archangel]

Something like this

B var word
counter var word
main:
counter = 0
b = 0
lcdout $FE,1    ' Clear LCD
for counter = 0 to 255


LCDOUT $fe,$2,b," ",#counter
PAUSE 250
b = b + 1
next counter
goto main

[mackrackit]

About a year ago I had the bright idea of using a PIC and a VDIP1 to transfer file to a Burny 2.5 CNC controller. I could never get it working properly and gave up.

The Burny was never happy with the data being sent to it. My simulation software worked fine. I wonder if what newbie is seeing was the problem with the Burny?

Somehow the VDIP is sending "ghost" info??

[newbie]

hi guys thanks for the replies but i think i got it...
the weird characters were carriage returns ($0d).

i used this code..

CRET VAR BYTE
CRET = $0D
SERIN2 VinTXD,84,[WAIT(CRET),STR FILE1\12 \CRET,WAIT(CRET), STR FILE2\12 \CRET,WAIT(CRET),STR FILE3\12 \CRET,WAIT(CRET),STR FILE4\12 \CRET]

as you can see i waited for every occurrence of the carriage return and saved the characters found between them into an array of string.

the weird characters that you can see at the end of some files names in the lcd are i think blank or null arrays since i allocated 12 array places for every file name found but not all of them would be 12 characters long..some are less.

now could you suggest any better way of storing these file names?
because i think if i do it this way, my pic microcontroller would quickly run out of space to save all of the characters from the file names and if the flash drive inserted is very populated then the files names not saved in the array would not be displayed.

[Archangel]

If the file names are always the same, you could assign them each a number, and store the names in eprom, or if they have all the same name with a number, even easier, just display the name followed by the number received. Unless I am missing something due to inadequate supply of coffee .

[mackrackit]

You might try what Joe suggested before and pre-populate the arrays with a known value.