Datasheet

Programming PIC Microcontrollers in BASIC - mikroElektronika

Here’s an example for using Compact Flash card from BASIC. A set of files is written on CF card.

This can be checked later by plugging the CF card on a PC or a digital camera. Observe the way the

file is being written:

● First, write-to-file is initialized, telling to PIC that all consecutive CF_File_Write_Byte

instructions will write to a new file;

● Then, actual write of data is performed (with CF_File_Write_Byte);

● Finally, finish of write-to-file cycle is signallized with call to CF_File_Write_Complete

routine. At that moment, the newly created file is given its name.

program CompactFlash_File

' for PIC18

dim i1 as word

dim index as byte

dim fname as char[9]

dim ext as char[4]

sub procedure Init

TRISC = 0 ' PORTC is output. We'll

use it only to signal

' end of our program.

CF_Init_Port(PORTB, PORTD) ' Initialize ports

nop

loop until CF_DETECT(PORTB) = true ' Wait until CF card is

inserted

Delay_ms(50) ' Wait for a while until

the card is stabilized

end sub ' i.e. its power supply

is stable and CF card

' controller is on

main:

ext = "txt" ' File extensions will be

"txt"

index = 0 ' Index of file to be

written

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