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krodkey
Joined: 12 Jul 2006
Posts: 9
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| 18F4550 with MMC/SD |
 Posted: Tue Oct 31, 2006 12:18 pm |
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I am using a 18F4550 with a 48MHz external Oscillator. So far I have been unsuccessful reading and writing to a MMC or SD card using the mmc_spi.c library. Most of my testing has been done with the MMC card. The card seems to initialize, but i cannot read or write to it. Here is my code. | Code: | #include<18F4550.h>
#use delay (clock=48000000)
#fuses HS, NOLVP, NOWDT, PUT, BROWNOUT
#define MMC_CS PIN_A1
#define MMC_CLK PIN_B1
#define MMC_DI PIN_B0
#define MMC_DO PIN_C7
#include <mmc_spi.c>
#include "lcd.h"
main()
{
int size=0;
int address=0;
int *ptr;
int value = 10;
int rd_val = -1;
lcd_init();
setup_spi(SPI_MASTER|SPI_H_TO_L|SPI_CLK_DIV_64);
ptr = &value;
size = sizeof(value);
disable_interrupts(GLOBAL);
lcd_clear();
lcd_gotoxy(1,1);
enable_interrupts(GLOBAL);
setup_oscillator(OSC_250KHZ);
if(mmc_init()==TRUE)
{
delay_ms(100);
disable_interrupts(GLOBAL);
printf(lcd_putc, "mmc init ok");
enable_interrupts(GLOBAL);
}
else
{
disable_interrupts(GLOBAL);
printf(lcd_putc, "mmc init fault");
enable_interrupts(GLOBAL);
}
setup_oscillator(FALSE);
disable_interrupts(GLOBAL);
lcd_gotoxy(1,2);
enable_interrupts(GLOBAL);
if(mmc_write_block(address, size, ptr)==TRUE)
{
delay_ms(100);
disable_interrupts(GLOBAL);
printf(lcd_putc, "write ok");
enable_interrupts(GLOBAL);
}
else
{
disable_interrupts(GLOBAL);
printf(lcd_putc, "write fault");
enable_interrupts(GLOBAL);
}
disable_interrupts(GLOBAL);
lcd_gotoxy(1,3);
enable_interrupts(GLOBAL);
if(mmc_read_block(address, size, &rd_val)==TRUE)
{
delay_ms(100);
disable_interrupts(GLOBAL);
printf(lcd_putc, "read ok");
enable_interrupts(GLOBAL);
}
else
{
disable_interrupts(GLOBAL);
printf(lcd_putc, "read fault");
enable_interrupts(GLOBAL);
}
while(1){;}
}
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output:
| Code: | mmc init ok
write fault
read fault |
any input is much appreciated.
Thanks |
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asmallri
Joined: 12 Aug 2004
Posts: 1634
Location: Perth, Australia
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| Posted: Tue Oct 31, 2006 1:40 pm |
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What hardware are you using?
_________________
Regards, Andrew
http://www.brushelectronics.com/software
Home of Ethernet, SD card and Encrypted Serial Bootloaders for PICs!! |
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krodkey
Joined: 12 Jul 2006
Posts: 9
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| Posted: Tue Oct 31, 2006 1:45 pm |
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| the card slot has "ALPS" inscribed on it with the # 45008. The card buffer is a 74LCX244DT. There is also a RES-4-CTS being used for the pull-ups on pin 8, 9, card detect and write protect. |
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asmallri
Joined: 12 Aug 2004
Posts: 1634
Location: Perth, Australia
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| Posted: Tue Oct 31, 2006 2:32 pm |
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I use a different SPI setup
| Code: | | setup_spi(spi_master | spi_l_to_h | spi_clk_div_64 | spi_xmit_l_to_h); |
_________________
Regards, Andrew
http://www.brushelectronics.com/software
Home of Ethernet, SD card and Encrypted Serial Bootloaders for PICs!! |
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krodkey
Joined: 12 Jul 2006
Posts: 9
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| Posted: Tue Oct 31, 2006 2:38 pm |
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Still getting the same errors. Here is the output from the spi driver if it helps: | Code: | ERR: mmc spi is busy
ERR: mmc spi is busy
ERR: mmc spi is busy
ERR: mmc spi is busy
ERR: mmc spi is busy
ERR: mmc spi is busy
ERR: mmc spi is busy
ERR: mmc spi is busy
sent cmd 0, arg 0
i=7
cmd data in = 00
ERR: mmc spi is busy
ERR: mmc spi is busy
sent cmd 0, arg 0
i=7
cmd data in = 00
ERR: mmc spi is busy
ERR: mmc spi is busy
sent cmd 0, arg 0
i=7
cmd data in = 00
ERR: mmc spi is busy
ERR: mmc spi is busy
sent cmd 0, arg 0
i=7
cmd data in = 00
ERR: mmc spi is busy
ERR: mmc spi is busy
ERR: mmc spi is busy
ERR: mmc spi is busy
ERR: mmc spi is busy
sent cmd 0, arg 0
i=7
cmd data in = 00
ERR: mmc spi is busy
ERR: mmc spi is busy
sent cmd 0, arg 0
i=7
cmd data in = 00
ERR: mmc spi is busy
ERR: mmc spi is busy
ERR: mmc spi is busy
ERR: mmc spi is busy
ERR: mmc spi is busy
ERR: mmc spi is busy
ERR: mmc spi is busy
ERR: mmc spi is busy
sent cmd 0, arg 0
err: no start bit waiting for response
ERR: mmc spi is busy
ERR: mmc spi is busy
ERR: mmc spi is busy
ERR: mmc spi is busy
ERR: mmc spi is busy
ERR: mmc spi is busy
ERR: mmc spi is busy
ERR: mmc spi is busy
ERR: mmc spi is busy
ERR: mmc spi is busy
sent cmd 0, arg 0
i=7
cmd data in = 00
ERR: mmc spi is busy
ERR: mmc spi is busy
ERR: mmc spi is busy
ERR: after reset, device isn't idle ERR: mmc spi is busy
set block size failed
ERR: mmc spi is busy
ERR: couldn't set read block size
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PCM programmer
Joined: 06 Sep 2003
Posts: 21708
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| Posted: Tue Oct 31, 2006 2:39 pm |
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1. What is your external oscillator or crystal frequency ?
You have your #use delay() statement set for 48 MHz, but you're
using the HS fuse. The HS setting will only work for a crystal,
which is from 4 MHz to 25 MHz. This is according to Table 28-8
in the data sheet. Please post the frequency of your crystal.
2. You have various setup_oscillator() statements throughout
your code. Why are those statements in there ?
3. If you want Port B to come up as digital i/o upon power-on reset,
you must add the NOPBADEN setting to your #fuses statement. |
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krodkey
Joined: 12 Jul 2006
Posts: 9
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| Posted: Tue Oct 31, 2006 5:19 pm |
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1. Yes, you are absolutely correct. I should be using EC for my current config.
2.I inserted the oscillator statemetnts to control the speed during the card initialization. I am now realizing that the clock for the spi interface is set using the spi_setup() function.
3. Will I have to make any adjustments to the other ports(A and C) or is it only B that needs to be all digital? | Code: | #define MMC_CS PIN_A1
#define MMC_CLK PIN_B1
#define MMC_DI PIN_B0
#define MMC_DO PIN_C7 |
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krodkey
Joined: 12 Jul 2006
Posts: 9
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| Posted: Wed Nov 01, 2006 11:26 am |
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After changing some config settings I now get different errors for the sd and mmc card.
SD Errors: | Code: | 11 ERR: mmc spi is busy
11 ERR: mmc spi is busy
11 ERR: mmc spi is busy
11 ERR: mmc spi is busy
11 ERR: mmc spi is busy
11 ERR: mmc spi is busy
11 ERR: mmc spi is busy
11 ERR: mmc spi is busy
11 ERR: mmc spi is busy
11 ERR: mmc spi is busy
11 ERR: mmc spi is busy
11 ERR: mmc spi is busy
11 ERR: mmc spi is busy
11 ERR: mmc spi is busy
11 ERR: mmc spi is busy
11 ERR: mmc spi is busy
11 ERR: mmc spi is busy
11 ERR: mmc spi is busy
11 ERR: mmc spi is busy
11 ERR: mmc spi is busy
11 ERR: mmc spi is busy
11 ERR: mmc spi is
11 ERR: mmc spi is busy
11 ERR: mmc spi is busy
11 ERR: mmc spi is busy
11 ERR: mmc spi is busy
11 ERR: mmc spi is busy
11 ERR: mmc spi is busy
11 ERR: mmc spi is busy
11 ERR: mmc spi is busy
11 ERR: mmc spi is busy
11 ERR: mmc spi is busy
11 ERR: mmc spi is busy
11 ERR: mmc spi is busy
11 ERR: mmc spi is busy
11 ERR: mmc spi is busy
11 ERR: mmc spi is busy
11 ERR: mmc spi is busy
11 ERR: mmc spi is busy
11 ERR: mmc spi is busy
11 ERR: mmc spi is busy
11 ERR: mmc spi is busy
11 ERR: mmc spi is busy
11 ERR: mmc spi is busy
11 ERR: mmc spi is busy
11 ERR: mmc spi is busy
11 ERR: mmc spi is busy
11 ERR: mmc spi is busy
11 ERR: mmc spi is busy
11 ERR: mmc spi is busy
1 ERR: after reset, device isn't idle11 ERR: mmc spi is busy
set block size failed
11 ERR: mmc spi is busy
4 ERR: couldn't set read block size |
"11 ERR:" is comming from the mmc_send_command procedure during initialization. "1 ERR:" is right after the init procedure regains control and the rest are from a write and read operation(which would obviously fail due to the failure in the init.
MMC Errors: | Code: |
sent cmd 0, arg 0
i=7
cmd data in = 00
sent cmd 0, arg 0
12 err: no start bit waiting for response
11 ERR: mmc spi is busy
11 ERR: mmc spi is busy
sent cmd 0, arg 0
12 err: no start bit waiting for response
11 ERR: mmc spi is busy
11 ERR: mmc spi is busy
sent cmd 0, arg 0
12 err: no start bit waiting for response
11 ERR: mmc spi is busy
11 ERR: mmc spi is busy
sent cmd 0, arg 0
12 err: no start bit waiting for response
11 ERR: mmc spi is busy
11 ERR: mmc spi is busy
sent cmd 0, arg 0
i=7
cmd data in = 00
11 ERR: mmc spi is busy
11 ERR: mmc spi is busy
sent cmd 0, arg 0
i=7
cmd data in = 00
sent cmd 0, arg 0
12 err: no start bit waiting for response
11 ERR: mmc spi is busy
11 ERR: mmc spi is busy
sent cmd 0, arg 0
12 err: no start bit waiting for response
11 ERR: mmc spi is busy
11 ERR: mmc spi is busy
sent cmd 0, arg 0
12 err: no start bit waiting for response
11 ERR: mmc spi is busy
11 ERR: mmc spi is busy
sent cmd 0, arg 0
12 err: no start bit waiting for response
11 ERR: mmc spi is busy
11 ERR: mmc spi is
sent cmd 0, arg 0
12 err: no start bit waiting for response
11 ERR: mmc spi is busy
11 ERR: mmc spi is busy
sent cmd 0, arg 0
i=7
cmd data in = 00
11 ERR: mmc spi is busy
11 ERR: mmc spi is busy
sent cmd 0, arg 0
i=7
cmd data in = 00
sent cmd 0, arg 0
12 err: no start bit waiting for response
11 ERR: mmc spi is busy
11 ERR: mmc spi is busy
sent cmd 0, arg 0
12 err: no start bit waiting for response
11 ERR: mmc spi is busy
11 ERR: mmc spi is busy
sent cmd 0, arg 0
12 err: no start bit waiting for response
11 ERR: mmc spi is busy
11 ERR: mmc spi is busy
sent cmd 0, arg 0
12 err: no start bit waiting for response
11 ERR: mmc spi is busy
11 ERR: mmc spi is busy
sent cmd 0, arg 0
12 err: no start bit waiting for response
11 ERR: mmc spi is busy
1 ERR: after reset, device isn't idle
sent cmd 16, arg 512
i=7
cmd data in = 00
11 ERR: mmc spi is busy
write byte failed. Nothing written!
sent cmd 16, arg 1
12 err: no start bit waiting for response
4 ERR: couldn't set read block size
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All output and errors come from the mmc_send_command procedure except "1 ERR:" which comes from mmc_init. The errors following the "1 ERR:" are generated from the mmc_init procedure.
I am not sure exactly what this is telling me other than the fact that I have some issues somewhere.
Any suggestions?? |
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PCM programmer
Joined: 06 Sep 2003
Posts: 21708
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| Posted: Wed Nov 01, 2006 12:32 pm |
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Did you change the setup_spi() function parameters to be the same
as asmallri's settings ? He's using SPI mode 0. Your original code
was set for Mode 2. Mode 0 samples data on the rising edge, which
is what the MMC spec says to use for SPI timing.
http://www.totalphase.com/support/articles/article03/#modes
I suggest that you change that line of code to match asmallri's settings. |
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krodkey
Joined: 12 Jul 2006
Posts: 9
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| Posted: Wed Nov 01, 2006 12:37 pm |
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| Implemented that line of code before the last error posting. |
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krodkey
Joined: 12 Jul 2006
Posts: 9
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| Posted: Wed Nov 01, 2006 12:49 pm |
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Latest Version of my code: | Code: |
#include<18F4550.h>
#use delay (clock=48000000)
#fuses EC ,NOLVP, PUT, BROWNOUT, NOWDT, NOPROTECT, DEBUG, NOPBADEN, CPUDIV1, VREGEN, NOUSBDIV
#define MMC_CS PIN_A1
#define MMC_CLK PIN_B1
#define MMC_DI PIN_B0
#define MMC_DO PIN_C7
#include <mmc_spi.c>
#include <usb_cdc.h>
#include "lcd.h"
void main(void)
{
int size=0;
int address=0;
int *ptr;
int value = 10;
int rd_val = -1;
char c = 'q';
lcd_init();
usb_init();
c=usb_cdc_getc();
setup_spi(SPI_MASTER|SPI_L_TO_H|SPI_CLK_DIV_64|SPI_XMIT_L_TO_H);
ptr = &value;
size = sizeof(value);
disable_interrupts(GLOBAL);
lcd_clear();
lcd_gotoxy(1,1);
enable_interrupts(GLOBAL);
if(mmc_init()==TRUE)
{
disable_interrupts(GLOBAL);
printf(lcd_putc, "mmc init ok");
enable_interrupts(GLOBAL);
}
else
{
disable_interrupts(GLOBAL);
printf(lcd_putc, "mmc init fault");
enable_interrupts(GLOBAL);
}
disable_interrupts(GLOBAL);
lcd_gotoxy(1,2);
enable_interrupts(GLOBAL);
if(mmc_write_block(address, size, ptr)==TRUE)
{
disable_interrupts(GLOBAL);
printf(lcd_putc, "write ok");
enable_interrupts(GLOBAL);
}
else
{
disable_interrupts(GLOBAL);
printf(lcd_putc, "write fault");
enable_interrupts(GLOBAL);
}
disable_interrupts(GLOBAL);
lcd_gotoxy(1,3);
enable_interrupts(GLOBAL);
if(mmc_read_block(address, size, &rd_val)==TRUE)
{
delay_ms(100);
disable_interrupts(GLOBAL);
printf(lcd_putc, "read ok");
enable_interrupts(GLOBAL);
}
else
{
disable_interrupts(GLOBAL);
printf(lcd_putc, "read fault");
enable_interrupts(GLOBAL);
}
while(1){;}
}
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bjf10
Joined: 26 Nov 2006
Posts: 1
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| Posted: Sun Nov 26, 2006 5:00 pm |
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| Code: | if(mmc_init()==TRUE)
{
disable_interrupts(GLOBAL);
printf(lcd_putc, "mmc init ok");
enable_interrupts(GLOBAL);
} |
Shouldn't that be:
| Code: | f(mmc_init()==FALSE
{
disable_interrupts(GLOBAL);
printf(lcd_putc, "mmc init ok");
enable_interrupts(GLOBAL);
} |
the mmc_init() function returns a ZERO if everything goes well...
-Brian. |
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krodkey
Joined: 12 Jul 2006
Posts: 9
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| Posted: Mon Nov 27, 2006 12:28 pm |
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| Thanks. I did notice that after the last post, but that was the least of my probs. I finally got a chance to put the board on a good scope and was able to see that timing was a major issue. The built in delay functions were giving inconsistent values. Once this was corrected I was able to initialize the card and received an R1 response. I have not tried to write to the card yet but that will be soon to come. |
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Picmouse
Joined: 20 Mar 2007
Posts: 7
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| Posted: Tue Mar 20, 2007 6:14 pm |
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 Hello, you me this presenting the same problem that had krodkey, but I don't understand like it was the solution. In my case use an oscillator of 20MHz.
This is the code that I have:
| Code: | #include <18F4550.h>
#fuses HS,NOWDT,NOPROTECT,NOLVP,NODEBUG
#use delay(clock=20000000)
#use rs232(baud=9600,parity=N,xmit=PIN_D1,force_sw)
#define MMC_CLK PIN_B1
#define MMC_DI PIN_B0
#define MMC_DO PIN_C7
#define MMC_CS PIN_B3
#include <mmc_spi.c>
#use standard_io(A)
#use standard_io(B)
#use standard_io(C)
#use standard_io(D)
#use standard_io(E)
void main (void){
set_tris_c(0b00010011);
set_tris_b(0b00000001);
setup_spi(spi_master | spi_l_to_h | spi_clk_div_64 | spi_xmit_l_to_h);
if(mmc_init ()!=0) printf("\r\n ERROR\r\n");
else printf("\r\n OK\r\n");
while(1){
}
} |
Always these errors:
| Quote: | sent cmd 0, arg 0
err: no start bit waiting for response
sent cmd 0, arg 0
err: no start bit waiting for response
sent cmd 0, arg 0
err: no start bit waiting for response
sent cmd 0, arg 0
err: no start bit waiting for response
sent cmd 0, arg 0
err: no start bit waiting for response
ERR: after reset, device isn't idle |
Please they can help me?
Last edited by Picmouse on Wed Mar 21, 2007 9:22 am; edited 1 time in total |
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ckielstra
Joined: 18 Mar 2004
Posts: 3680
Location: The Netherlands
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| Posted: Wed Mar 21, 2007 6:50 am |
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Check your hardware:
- Are you using an MMC or SD card?
- Are both the MMC card and the PIC running at 3.3V? If not, than you will have to add voltage level converters.
- Do you have pull-up resistors (100k) on Data_in and Data_out?
- Note that the data lines are crossed; MMC_DO of the PIC must be connected to Data_In (pin 2) of the MMC. MMC_DI of the PIC is connected to Data_Out (pin 7) of the MMC. |
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