Counting led blinks..

[mackrackit]

Open the SDFS file and look at the CE_xxx .
Your card did not initialize. Could be lots of things from a loose wire to a bad card. Bad as in file format corrupt to just wore out.
If the connections are good see if the card can be read in a PC, check the format.

[tacbanon]

Oh my, I think I broke my sdcard module. I double checked the wires I'm using and I reconnect and disconnect them to the devboard more than 10 times still the same result. The SDCard is okay (its in FAT format). I remembered I connect it to PortB earlier the same port where the keypad is also connected. this could have ruin the module...

[tacbanon]

For the mean time while I'm waiting for my new sdcard module(will come within a week). I will try to study on eeprom(Pic18F4550's internal). Thank you again to this wonderful forum(people) and to macrackit for the precious time... until nextime.

regards,
tacbanon

[tacbanon]

Hi, I've been playing some time with READ and Write command on the internal eeprom, I'm having trouble updating DATA @6,5,"54321". Probably I'm doing it the hard way. Can you help me out what I'm doing wrong?

'My Tested Prototype with Pic18F4550 and EEPROMInclude "modedefs.bas"
INCLUDE "C:\PBP\USB18\EE_Vars.pbp"           ; Include the EE_var routines
asm
    __CONFIG    _CONFIG1L, _PLLDIV_5_1L & _CPUDIV_OSC1_PLL2_1L & _USBDIV_2_1L
    __CONFIG    _CONFIG2L, _PWRT_ON_2L & _BOR_ON_2L  & _BORV_2_2L  & _VREGEN_ON_2L   
    __CONFIG    _CONFIG2H, _WDT_OFF_2H 
    __CONFIG    _CONFIG3H, _MCLRE_ON_3H & _LPT1OSC_OFF_3H & _PBADEN_OFF_3H & _CCP2MX_ON_3H 
    __CONFIG    _CONFIG4L, _STVREN_ON_4L & _LVP_OFF_4L & _ICPRT_OFF_4L  & _XINST_OFF_4L & _DEBUG_OFF_4L 
endasm
DEFINE    OSC 48
ADCON1 = 15               ' Set all I/Os to Digital      
CMCON = 7                 ' Disable Comparators
INTCON2.7 = 0
'EEprom data
'U1    VAR WORD  :  @  EE_var  _U1, WORD, 9999 ' for later use
 
DATA @0,5,"12345"
DATA @6,5,"54321"
DATA @13,5,"14332"
DATA @19,5,"24432"
DATA @25,5,"85921"


TRISA = %00000000
TRISD = %00000000
PORTD = %00000000
TRISB = %11110000    ' Set Keypad I/O 
PORTB = 0             ' Set columns LOW  
PortA = 0


myvarkey    var byte
ByteA        var Byte[6]  
B0          var byte[5]
cnt         var byte
x           var byte
cnt = 0
asciichar var byte
address var byte
    '    ---------------------------------[Program Start]----------------------------------------------
serout2 PortD.5,T9600,[$1B,$63,$30]  
pause 200
serout2 PortD.5,84,[$1B,$45,"EEPROM"]
serout2 PortD.5,84,[$D,"Studies"]
serout2 PortD.5,84,[$1B,$63,$30]
pause 2000
Serout2 PortD.5,84, [$1B,$45]
main:


@ READKEYPAD _myvarkey
lookup myvarkey,[0,"123A456B789C*0#D"],Key 
Serout2 PortD.5,84, [$1B,$45,"Key = ",Key]
 
if Key = "#"  and cnt < 6 then
     if ByteA[0]="1" and ByteA[1]="9" then   ' wait 19 is pressed before updating 
        Serout2 PortD.5,84, [$D, "Special Key"]        
        pause 20
        serout2 PortD.5,84,[$D,str ByteA\cnt]
        READ 6,x
         for address=6 to x+6
            Write address+1, ByteA[address]
         next address
        cnt=0   
     endif  
     
else                         
     ByteA[cnt]=Key
     Serout2 PortD.5,84, [$D, ">" , ByteA[cnt]]
     cnt=cnt+1


Endif


if cnt > 5 then
Serout2 PortD.5,84, [$D, "5Digits only"]
cnt = 0
ENdif




if Key = "A" then
READ 0,x
serout2 PortD.5,84,[$D,Dec x," "]
pause 1000
for address=0 to x
    READ address,asciichar
    serout2 PortD.5,84,[$D,asciichar]
next address
pause 1000
cnt = 0
endif


if Key = "B" then
READ 6,x
serout2 PortD.5,84,[$D,Dec x," "]
pause 1000
for address=0+6 to x+6
    READ address,asciichar
    serout2 PortD.5,84,[$D,asciichar]
next address
pause 1000
cnt = 0
endif


if Key = "C" then
READ 13,x
serout2 PortD.5,84,[$D,Dec x," "]
pause 1000
for address=0+13 to x+13
    READ address,asciichar
    serout2 PortD.5,84,[$D,asciichar]
next address
pause 1000
cnt = 0
endif


if Key = "D" then
READ 19,x
serout2 PortD.5,84,[$D,Dec x," "]
pause 1000
for address=0+19 to x +19
    READ address,asciichar
    serout2 PortD.5,84,[$D,asciichar]
next address
pause 1000
cnt = 0
endif


if Key = "*" then
READ 25,x
serout2 PortD.5,84,[$D,Dec x," "]
pause 1000
for address=0+25 to x +25
    READ address,asciichar
    serout2 PortD.5,84,[$D,asciichar]
next address
pause 1000
cnt = 0
endif
pause 500
goto main

But updating Data @0 ,"12345" was not a problem, I'm stuck passed @0 location.

regards,
tacbanon

[mackrackit]

This:

DATA @0,"12345"
DATA @6,"54321"

produces this when the EEPROM is read back

31

32

33

34

35

00

35

34

33

32

31

00

FF

FF

Is that what you want?

Did you find out what went bad with the SD card module? You can always use the SD card socket without all the other stuff on the module, it is easy if the MCU is running ~3 volts.

[tacbanon]

DATA @0,"12345"
DATA @6,"54321"

Sorry If I was not being clear... how can I rewrite them and read back as in the format of "56988" or "65431".
Before overwriting DATA @6,"54321" I can read back as "54321". But after updating it gives me like Hex numbers.

I don't know exactly what happened to sdcard it just dont work as before. But I will try to test it again later.

thanks,
tacbanon

[tacbanon]

Hi mackrackit, sorry if was not making clear. I want to read back from eeprom in the format of example "12345" or "65432" and I can do this uisng the following code.

if Key = "A" then
READ 0,x
serout2 PortD.5,84,[$D,Dec x," "]
pause 1000
for address=0 to x
    READ address,asciichar
    serout2 PortD.5,84,[$D,asciichar]
next address
pause 1000
cnt = 0
endif

And I noticed that if I rewrite the value of DATA @6,5,"54321" by entering "19325" and read it back I get "QZu" not "19325"..how do I resolve this?
I will try to test the sdcard tonight, hope something comes up....

thanks,
tacbanon

[tacbanon]

Hi I finally got my eeporm problem solved..I figured that it needs 2 location space in between.

DATA @0,5,"12345"
DATA @7,5,"54321"
DATA @14,5,"14332"
DATA @21,5,"24432"
DATA @28,5,"85921"

works great...
BTW just want to ask if there is a possible to press a key that consist of several characters, for example if I pressed key 1 in successive I can get a character 'a','b','c'. similar to a cellphone keypad.

regards,
tacbanon