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Dasat
Joined: 07 Feb 2012
Posts: 5
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| MMC card |
 Posted: Wed Feb 15, 2012 6:27 am |
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I've been battling with this mmc code. I'm trying to interface it with PIC18F4520. I observed that it seems the card is not initiliazing at all, so I would like to clarify this before moving to reading and writing at all. Pls help me view the code and make any suggestions. Thanks.
I'm using the inbuilt mmc_spi.c.
| Code: |
#include <nokia3310driver.c>
#use delay (clock=20000000)
#use rs232(baud=9600,xmit=PIN_C6,rcv=PIN_C7)
#fuses HS,NOWDT,NOBROWNOUT,NOLVP
#define MMC_CS PIN_C1
#define MMC_CLK PIN_C3
#define MMC_DI PIN_C4
#define MMC_DO PIN_C5
#include <mmc_spi.c>
int i,display;
signed int16 ad;
char dat;
int16 size;
int8 data[64];
int *ptr;//pointer to array
int32 adres;
void main() {
adres = &data[0];
size = 8;
ptr = data;
SETUP_SPI(SPI_MASTER | SPI_CLK_DIV_64 | SPI_L_TO_H |SPI_XMIT_L_TO_H );
setup_wdt(WDT_OFF);
setup_timer_0(RTCC_INTERNAL);
setup_timer_1 ( T1_DISABLED | T1_DIV_BY_8 );
setup_timer_2(T2_DIV_BY_1,199,5);
initlcd();
mmc_init();
if (mmc_init()==0)
putlcdchar("mmc init succ");
else
putlcdchar("mmc unsucces");
delay_us(100);
// put values in my array;
/*for (i=0; i<64; i++){
data[i] = 1;
}
for (i=0; i<64; i++){
ad =mmc_write_block(adres, size, *ptr);
if (ad==0)
putlcdchar("write was successful");
else
putlcdchar("write was un");
adres++;
}
dat = mmc_read_data();
} |
_________________
Believe and u would see |
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temtronic
Joined: 01 Jul 2010
Posts: 9243
Location: Greensville,Ontario
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| Posted: Wed Feb 15, 2012 6:32 am |
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Tell us what hardware you're using.
That's PIC, interface and mmc card specs. |
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Dasat
Joined: 07 Feb 2012
Posts: 5
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| Posted: Wed Feb 15, 2012 10:56 am |
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I'm still working with simulation on ISIS not yet setting it up. But the PIC is 18F4520
_________________
Believe and u would see |
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temtronic
Joined: 01 Jul 2010
Posts: 9243
Location: Greensville,Ontario
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| Posted: Wed Feb 15, 2012 12:51 pm |
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You will NEVER,EVER get the ISIS ( Proteus) simulation to work..
Can't be done, it is full of bugs,errors and faulty DRCs.
Get REAL hardware...program a REAL PIC, then and only then will it work.
BTW you CANNOT get a 5 volt PIC and a 3 volt SD card to work if they are the ONLY devices you have,NEVER,EVER going to happen.
well,maybe once, then the magic smoke comes out and you've destroyed both devices.... |
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asmallri
Joined: 12 Aug 2004
Posts: 1635
Location: Perth, Australia
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| Posted: Sat Feb 18, 2012 3:55 am |
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| temtronic wrote: | You will NEVER,EVER get the ISIS ( Proteus) simulation to work..
Can't be done, it is full of bugs,errors and faulty DRCs. |
Funny thing, one of my customers used my file system driver with Proteus. I like you said it will never work. I had to eat humble pie because he got it working. :-)
_________________
Regards, Andrew
http://www.brushelectronics.com/software
Home of Ethernet, SD card and Encrypted Serial Bootloaders for PICs!! |
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