Sd card code

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  1. - 29th October 2010, 09:27 #1
    NURULHAIZA's Avatar
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    Default Sd card code

    i would like to request code using pic basic for sd card reader......
  2. - 29th October 2010, 11:16 #2
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    http://melabs.com/resources/samples/pbp/sdfs3.htm
  3. - 30th October 2010, 01:48 #3
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    Smile sd card reader

    thanks....
  4. - 1st November 2010, 09:34 #4
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    Default sd card reader

    can i request for sd card reader code in PBP version 2.6??
  5. - 1st November 2010, 09:47 #5
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    As far as I can see the code I linked to previously IS for v2.6 - at least that's what it says, second line of code:
    Code:
    'Name        : sdfs3.pbp
'Compiler    : PICBASIC PRO Compiler 2.6 (PBPL only)
'Assembler   : MPASM
'Target PIC  : PIC16F4550
    <table style="width: 141px; height: 21px;"><tbody><tr><td class="number">
    </td><td class="content">
    </td></tr></tbody></table>
  6. - 2nd November 2010, 01:44 #6
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    Default sd card reader

    sorry..it's my bad..it's PBP 2.5 version that i used...
    thanks..
  7. - 2nd November 2010, 01:51 #7
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    The link provided works for 2.5 also. PBPL is the key.
    Dave
    Always wear safety glasses while programming.
  8. - 3rd November 2010, 00:52 #8
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    Thumbs up sd card reader

    thanks....
  9. - 4th November 2010, 00:56 #9
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    does this also support SDHC cards?
  10. - 4th November 2010, 11:06 #10
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    SDFS was modified for FAT32 and can be found here
    http://www.picbasic.co.uk/forum/show...7887#post77887
    It works for me as is but is not being maintained.
    Dave
    Always wear safety glasses while programming.
  11. - 11th November 2010, 06:00 #11
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    Default sd card reader

    i have try to compile the source code that you gave, but there are a lot of error...one of them are Redefinition of LABEL SD_CS.i would like to know what are the meaning of this error?? i have google but it not helping....

    thanks
  12. - 11th November 2010, 11:27 #12
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    Looks like you tried compiling SDFS.BAS as a stand alone, it is an "include".
    Did you read "sdreadme.txt"?
    Did you write any code to use the include? If so, post it.
    Dave
    Always wear safety glasses while programming.
  13. - 12th November 2010, 01:08 #13
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    Default sd card reader

    this is the code....
    Code:
        Define    OSC    20    ' 20 MHz oscillator

' Alias PIC pins and registers for SD/MMC card
SD_WE        Var    PORTA.4    ' SD card write protect
SD_WE_TRIS    Var    TRISA.4    ' SD card write protect direction
SDI        Var    PORTB.0    ' SPI data in
SDI_TRIS    Var    TRISB.0    ' SPI data in direction
SCL        Var    PORTB.1    ' SPI clock
SCL_TRIS    Var    TRISB.1    ' SPI clock direction
SD_CS        Var    PORTB.3    ' SD card chip select
SD_CS_TRIS    Var    TRISB.3    ' SD card chip select direction
SD_CD        Var    PORTB.4    ' SD card detect
SD_CD_TRIS    Var    TRISB.4    ' SD card detect direction
SDO        Var    PORTC.7    ' SPI data out
SDO_TRIS    Var    TRISC.7    ' SPI data out direction


' Include the SD/MMC subroutines (found in http://melabs.com/resources/samples/pbp/sdfs3.zip)
    Include "SDFS.PBP"
    SDC_UseHardSPI = TRUE    ' Use hardware SSP port for SPI.

    ADCON1 = 15        ' All I/O pins digital
    Pause 100

    ' FSInit initializes the card and reads all the preliminary information from it
    Gosub FSInit
    Serout2 PORTC.6, 84, ["Init: ", Dec FAT_error, " ", Dec SDC_status, " ", Dec SDC_response, $d, $a]
    If (FAT_error != 0) Then Stop

    ' Display card directory
    Gosub FINDfirst        ' Find first file on card
    While (FAT_error = 0)
        Serout2 PORTC.6, 84, [Str FAT_FileName\11, $d, $a]
        Gosub FINDnext    ' Find next file on card
    Wend

' This section defines a specific short (8.3) filename
'  Note that spaces are use in empty elements and must be upper case for Windows
    FAT_FileName[0] = "T"
    FAT_FileName[1] = "E"
    FAT_FileName[2] = "S"
    FAT_FileName[3] = "T"
    FAT_FileName[4] = "1"
    FAT_FileName[5] = " "
    FAT_FileName[6] = " "
    FAT_FileName[7] = " "
    FAT_FileName[8] = "T"
    FAT_FileName[9] = "X"
    FAT_FileName[10] = "T"

' Set file time to 8:30:10 and date to 1/1/2008
    FAT_seconds = 5
    FAT_minutes = 30
    FAT_hours = 8
    FAT_day = 1
    FAT_month = 1
    FAT_year = 28

' Open a file for write
    FAT_mode = "w"        ' Write mode
    Gosub FSfopen        ' Open file pointed to by Byte array FAT_FileName
    Serout2 PORTC.6, 84, ["Open for write: ", Dec FAT_error, $d, $a]
    If (FAT_error != 0) Then Stop

' Write to file
    FAT_src[0] = "A"
    FAT_src[1] = "B"
    FAT_src[2] = "C"
    FAT_count = 3
    Gosub FSfwrite
    Serout2 PORTC.6, 84, [ "Write ", Dec FAT_error, $d, $a]
    If (FAT_error != 0) Then Stop

' Close file
    Gosub FSfclose
    Serout2 PORTC.6, 84, [ "Close ", Dec FAT_error, $d, $a]
    If (FAT_error != 0) Then Stop

' Open a file for read
    FAT_mode = "r"        ' Read mode
    Gosub FSfopen        ' Open file pointed to by Byte array FAT_FileName
    Serout2 PORTC.6, 84, ["Open: ", Dec FAT_error, $d, $a]
    If (FAT_error != 0) Then Stop

' Read and display the whole file
    FAT_count = 1        ' Read 1 byte to buffer at a time
    Gosub FSfread
    While (FAT_error = 0)
        Serout2 PORTC.6, 84, [FAT_dest[0]]
        FAT_count = 1    ' Read 1 byte to buffer at a time
        Gosub FSfread
    Wend
    Serout2 PORTC.6, 84, [ "Read: ", Dec FAT_error, $d, $a]

' Delete a file
'    Gosub FSremove        ' Delete file pointed to by Byte array FAT_FileName
'    Serout2 PORTC.6, 84, ["Remove: ", Dec FAT_error, $d, $a]
'    If (FAT_error != 0) Then Stop

' Rename a file
' FAT_FileName2 is new name
'    FAT_FileName2[0] = "T"
'    FAT_FileName2[1] = "E"
'    FAT_FileName2[2] = "S"
'    FAT_FileName2[3] = "T"
'    FAT_FileName2[4] = "2"
'    FAT_FileName2[5] = " "
'    FAT_FileName2[6] = " "
'    FAT_FileName2[7] = " "
'    FAT_FileName2[8] = "T"
'    FAT_FileName2[9] = "X"
'    FAT_FileName2[10] = "T"
'    Gosub FSrename        ' Rename file pointed to by Byte array FAT_FileName
'    Serout2 PORTC.6, 84, ["Rename: ", Dec FAT_error, $d, $a]
'    If (FAT_error != 0) Then Stop

    End
  14. - 12th November 2010, 01:29 #14
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    Default sd card reader

    this are the code
    Attached Files Attached Files
  15. - 12th November 2010, 01:41 #15
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    I ran your code, it looks like the file SDFS3 that cam with the download, and it compiled fine.
    The only way I can reproduce your error is to try compiling SDFS.

    Using PBPL
    target is 18F4550

    What other errors are you getting?
    Dave
    Always wear safety glasses while programming.
  16. - 13th November 2010, 02:31 #16
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    Default sd card reader

    i don't have the PBPL box in my widow..here are the picture..
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  17. - 13th November 2010, 02:46 #17
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    Default sd card reader

    i have use the new version of MCS..i'm using the 3.0.0.5 version. but i'm facing a new problem which is this " The Microchip assembler (MPSM) only allows up to 62 character to be used for path and filename".....
  18. - 13th November 2010, 07:31 #18
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    Hi,
    Then simply change the location (path) and/or filename of your sourcefile so that the complete path and filename is less than 62 characters - simple as that.

    As an example, having your source files in project folder in a PIC folder in MyDocuments is bad as the full path might be:
    C:\Documents and Settings\Nurulhaiza\My Documents\PIC\MySDFSProject\Source.pbp which is 78 characters. Moving it to C:\PIC\MySDFSProject\Source.pbp will work as the path and filename now is 31 characters.
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