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manish12
Joined: 18 Jan 2009
Posts: 15
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| WHAT IS/SHOULD THE SIZE OF CARD AND WHAT TYPE ? |
 Posted: Mon Jan 19, 2009 1:21 am |
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| I AM USING 512MB SD CARD , BUT NOT SUCEESES. |
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asmallri
Joined: 12 Aug 2004
Posts: 1634
Location: Perth, Australia
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| Re: WHAT IS/SHOULD THE SIZE OF CARD AND WHAT TYPE ? |
| Posted: Mon Jan 19, 2009 6:48 pm |
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| manish12 wrote: | | I AM USING 512MB SD CARD , BUT NOT SUCEESES. |
Why would you use FAT32 on such a small SD card?
FAT16 is SIGNIFICANTLY faster than FAT32 when used with a PIC.
_________________
Regards, Andrew
http://www.brushelectronics.com/software
Home of Ethernet, SD card and Encrypted Serial Bootloaders for PICs!! |
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manish12
Joined: 18 Jan 2009
Posts: 15
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| Posted: Mon Jan 19, 2009 10:52 pm |
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I am concerned about the fat32 code given,
code for fat 32, so I am not able to use lower memory value i.e 32MB even it is fast . |
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asmallri
Joined: 12 Aug 2004
Posts: 1634
Location: Perth, Australia
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| Posted: Tue Jan 20, 2009 3:47 am |
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| manish12 wrote: | I am concerned about the fat32 code given,
code for fat 32, so I am not able to use lower memory value i.e 32MB even it is fast . |
FAT16 supports up to 2GB
_________________
Regards, Andrew
http://www.brushelectronics.com/software
Home of Ethernet, SD card and Encrypted Serial Bootloaders for PICs!! |
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manish12
Joined: 18 Jan 2009
Posts: 15
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| Posted: Tue Jan 20, 2009 4:42 am |
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| how you format it ? |
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asmallri
Joined: 12 Aug 2004
Posts: 1634
Location: Perth, Australia
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| Posted: Tue Jan 20, 2009 7:28 am |
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| manish12 wrote: | | how you format it ? |
To format an SD/MMC card for FAT16, from windows select the drive (SD/MMC Card), right click, select format. On the file system drop down box select FAT. It will then format using FAT16.
_________________
Regards, Andrew
http://www.brushelectronics.com/software
Home of Ethernet, SD card and Encrypted Serial Bootloaders for PICs!! |
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manish12
Joined: 18 Jan 2009
Posts: 15
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| Posted: Tue Jan 20, 2009 12:02 pm |
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check it yourself.
any way for those who haven't format the memory size > 32bm windows not support for fat16, it will show as fat but from fdisk you will find that it is fat32 .
and for 32bm it is format with fat16 only! by default |
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asmallri
Joined: 12 Aug 2004
Posts: 1634
Location: Perth, Australia
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| Posted: Tue Jan 20, 2009 4:11 pm |
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| manish12 wrote: | | check it yourself. |
I develop and sell File System Software for PICs and am continually testing cards and features. I regularly format cards from 256MB to 2GB with FAT16 as part of my test procedures for my software to identify the FAT used.
| Quote: |
any way for those who haven't format the memory size > 32bm windows not support for fat16, it will show as fat but from fdisk you will find that it is fat32 . |
No this is not true. Perhaps there is something wrong with your windows installation.
| Quote: | | and for 32bm it is format with fat16 only! by default |
Here is an extract of a Kingston 2GB card initially formatted to FAT32
| Code: |
Partition boot sector:
00000050 - 20 20 46 41 54 33 32 20 20 20 33 C9 8E D1 BC F4 FAT32 3ɎѼô
Volume is FAT32
Bytes per Sector = 512
Reserved Sectors = 34
Sectors per Cluster = 8
Cluster_size_bytes = 4096
Root directory Entries = 0
Total Sectors = 3921920
Sectors for FAT = 3823
FAT 1 address = 0x00004400
FAT 2 address = 0x001E2200
Root directory address = 0x003C0000
Data area address = 0x003C0000
Root directory sectors = 0
Sectors for data = 3914240
Total Clusters = 489280
Hidden Sectors = 0 |
Here is the same card formatted to FAT16 using the procedure I described above:
| Code: |
Partition boot sector:
0001E630 - 4D 45 20 20 20 20 46 41 54 31 36 20 20 20 33 C9 ME FAT16 3É
Volume is FAT16
Bytes per Sector = 512
Reserved Sectors = 4
Sectors per Cluster = 64
Cluster_size_bytes = 32768
Root directory Entries = 512
Total Sectors = 4022029
Sectors for FAT = 246
FAT 1 address = 0x0001EE00
FAT 2 address = 0x0003DA00
Root directory address = 0x0005C600
Data area address = 0x00060600
Root directory sectors = 32
Sectors for data = 4021501
Total Clusters = 62835
Hidden Sectors = 243
|
You can clearly see the card has been formatted to FAT16.
_________________
Regards, Andrew
http://www.brushelectronics.com/software
Home of Ethernet, SD card and Encrypted Serial Bootloaders for PICs!! |
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manish12
Joined: 18 Jan 2009
Posts: 15
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| Posted: Tue Jan 20, 2009 11:31 pm |
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You might be right, I may be wrong.
Thank you!
I highly appreciate your efforts
I now I can suggest to others. |
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CLK.Tech
Joined: 30 Apr 2009
Posts: 5
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| Posted: Thu Apr 30, 2009 4:36 am |
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Hi guys!
Just a question: does anybody migrate this code to a PIC24 device? I'm trying that and I have so much errors.
The SPI Hardware runs properly but some loops fail.
Did anybody do that? |
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dynamitron
Joined: 18 Mar 2009
Posts: 38
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| Posted: Tue Apr 13, 2010 3:22 pm |
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I must says that I have try all the driver and format methods mentionned in the diffrent posts of this forum. For my case, none of them was a success.
I decided to buy the driver from asmallri (brushelectronics.com) and they works out of the box !! Everything went perfect after having simply formated my 2 gb SD card with a camera. For the moment, I do not even know if the card is formated in FAT16 or 32.
I am able to create a file with the pic, write into it, read it and send it over rs232.
On my PC, I can read the file, modify it and if I put back the card on the pic, I see the modification done on the PC.
Dynamitron. |
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Scythe
Joined: 05 Mar 2010
Posts: 5
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| Posted: Thu May 13, 2010 11:46 am |
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| Code working without any problem. But I couldn't manage to update the contents of file previously opened and written. Whenever I tried to log something new, it overwrites the previous value. Is there anyway to overcome this ? |
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neochrome32
Joined: 09 Jun 2013
Posts: 153
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| FAT32 with Tomi |
| Posted: Mon Jun 10, 2013 8:56 pm |
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this is the demo code
| Code: |
// main.c
#include <main.h>
// Current Pin Setup for the SDCARD //
// TESTED SO FAR AND WORKING //
/*
Transcend SD 2GIG (cheap o card) - WORKING
*/
/* THESE ARE MY CHIP SPECIFICS */
#define MMC_CS PIN_c2
#define MMC_CLK PIN_c3
#define MMC_DI PIN_C4
#define MMC_DO PIN_C5
#define MMCSD_PIN_SELECT MMC_CS //o
#define MMCSD_PIN_SCL MMC_CLK //o
#define MMCSD_PIN_SDI MMC_DI //i
#define MMCSD_PIN_SDO MMC_DO //o
#use FAST_IO(C)
#include <string.h>
#include "mmcsd.c"
#include "gofat.c" // Tomi- Fat32 using CCS C (2007) Modified MMCSD.C Driver
void PrintData(char *data, long len){
long i;
long j;
long k;
int8 step1;
//int8 step2;
printf ("Showing Block Length: %lx [%lu byte(s)]\n", len,len);
j = 0;
step1=0;
//step2=0;
for (i = 0; i < len; i++){
printf (" %02X", data[i]);
if((i%8)==7)
putc(' ');
if (j >= 31) {
printf (" | ");
for (k = (i - 31); k <= i; k++) {
if (! isalnum (data[k])) printf (".");
else printf ("%c", data[k]);
if((k%8)==7)
putc(' ');
}
printf ("\r\n");
j = 0;
} else {
j++;
}
}
putc('\n');
}
/*------------- FAT32 TESTING -----------*/
char buffer[512];
int8 *ptra;
char filename[32]; // 32 size names, (TESTED WITH 8+3 type though this worked)
int32 AllocSpace;
char fs; // File system ID (for when you open systems, this supports 2 only (save on already bloated ram usage)
int8 g;
void main(){
/* my chip specifics */
setup_wdt(WDT_OFF);
setup_timer_3(T3_DISABLED | T3_DIV_BY_1);
setup_timer_4(T4_DISABLED,0,1);
setup_timer_5(T5_DISABLED | T5_DIV_BY_1);
setup_timer_6(T6_DISABLED,0,1);
setup_adc(ADC_OFF);
setup_comparator(NC_NC_NC_NC);// This device COMP currently not supported by the PICWizard
/* end */
printf("\n\nBooting...\n\n");
ptra = &(buffer[0]);
// ALL YOU NEED REALLY IS mcscd_init() and InitFat()
if(mmcsd_init()==MMCSD_GOODEC){
AllocSpace=InitFAT(); // (AllocSpace ot really needed, but can be used to verify FAT32 startup)
printf("ROOT LOCATION : %Lu\n", AllocSpace+2); // print the location
ReadSector(AllocSpace+2,ptra); // READ Sector into buffer (ptra is the pointer for buffer[]) the first sector of the FS part - again not really important
PrintData(Buffer,512);
}
strcpy(filename,"FASTROM.TXT");
// CREATE THE FILE if you KNOW this file doesn't exist on your sdcard. otherwise leave commented out
/*
fs=fopen(filename, 'w');
printf("chunk 0... ");
strcpy(buffer, "new file\r\n");
fwrite(buffer, strlen(buffer),fs);
fclose(fs);
*/
/* IN THIS part, we're demonstrating that you can append text to a file,
IMPORTANT NOTE is before you can append another set of text you need to close file and reopen again .
seems important otherwise your just going to over write the buffer, fclose just writes the buffer to sector.
*/
/*
fs=fopen(filename, 'a');
printf("chunk 1... ");
strcpy(buffer, "something new to put in to the rom ball.\r\n");
fwrite(buffer, strlen(buffer),fs);
fclose(fs);
fs=fopen(filename, 'a');
printf("chunk 2... ");
strcpy(buffer, "i want to make sure this works ok. \r\n");
fwrite(buffer, strlen(buffer),fs);
fclose(fs);
fs=fopen(filename, 'a');
printf("chunk 3... ");
strcpy(buffer, "**I dont know what to put in to the rom, but i want to see it work like this **\r\n");
fwrite(buffer, strlen(buffer),fs);
fclose(fs);
fs=fopen(filename, 'a');
printf("chunk 4... ");
strcpy(buffer, "**Need something better than just a few bytes of text though... how hmm**\r\n");
fwrite(buffer, strlen(buffer),fs);
fclose(fs);
*/
/* check out the data, this worked */
/* for this test to work, make a file On your sdcard, name it "test.txt" and put in 'hello world' for example or anything you like
if successfull you should get the data..
NOTE: appears that you can only load 512bytes at a time, (im sure we all knew that already)
*/
//strcpy(filename, "STUFF1/FILE1.TXT"); // this was a demo to see if i could do directories - it worked. NOTE: STUFF1/FILE1.TXT, there is NO leading '/'
strcpy(filename, "STUFF1/FILE1.TXT"); // note this is in CAPS? seems i haven't worked out yet how to use the ansi names (long names) this works anyways
fs=fopen(filename, 'r'); //r=read. if this file doesn't exist, the file is created!
fread(buffer,256, fs); // this will read 32 bytes from the file... i suspect tho that if you read off the end of a file, that is also loaded, hmm
buffer[256]=0; // null char at the end, as fread does NOT terminate string... this is RAW
fclose(fs);
printf("String from File: TEST.TXT was %s\n" , buffer);
delay_ms(1000);
printf("\nDone.:");
for(;;);
}
|
[/code] |
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neochrome32
Joined: 09 Jun 2013
Posts: 153
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| main.h |
| Posted: Mon Jun 10, 2013 8:57 pm |
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main.c
this code is really specific to the chip im using, but i tried to make sure it didn't bother the rest of the code and to keep it as generic as possible
| Code: |
#include <18F46K22.h>
#device *=16
#FUSES NOXINST
#FUSES NOPBADEN //PORTB pins are configured as analog input channels on RESET
#fuses HSH,PUT,NOPROTECT,NOLVP,NOWDT,NOBROWNOUT,PLLEN,NOPBADEN,WDT128
#device WRITE_EEPROM = NOINT
#use delay(crystal=8M, clock=32000000)
#use rs232(baud=115200,parity=N,xmit=PIN_D1,rcv=PIN_D2,bits=8,stream=PORT1)
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neochrome32
Joined: 09 Jun 2013
Posts: 153
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| mmcsd.c |
| Posted: Mon Jun 10, 2013 8:59 pm |
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again i needed something for SDcards only, BUT this served....
there are modifications to the one Tomi did, NOT MUCH though mind...
i used this code really to get the read sector and write sector working in the follow codes (gofat.c) and (gofat.h)
| Code: |
/////////////////////////////////////////////////////////////////////////
//// MMCSD.c ////
//// ////
//// This is a low-level driver for MMC and SD cards. ////
//// ////
//// --User Functions-- ////
//// ////
//// mmcsd_init(): Initializes the media. ////
//// ////
//// mmcsd_read_byte(a, p) ////
//// Reads a byte from the MMC/SD card at location a, saves to ////
//// pointer p. Returns 0 if OK, non-zero if error. ////
//// ////
//// mmcsd_read_data(a, n, p) ////
//// Reads n bytes of data from the MMC/SD card starting at address ////
//// a, saves result to pointer p. Returns 0 if OK, non-zero if ////
//// error. ////
//// ////
//// mmcsd_flush_buffer() ////
//// The two user write functions (mmcsd_write_byte() and ////
//// mmcsd_write_data()) maintain a buffer to speed up the writing ////
//// process. Whenever a read or write is performed, the write ////
//// buffer is loaded with the specified page and only the ////
//// contents of this buffer is changed. If any future writes ////
//// cross a page boundary then the buffer in RAM is written ////
//// to the MMC/SD and then the next page is loaded into the ////
//// buffer. mmcsd_flush_buffer() forces the contents in RAM ////
//// to the MMC/SD card. Returns 0 if OK, non-zero if errror. ////
//// ////
//// mmcsd_write_byte(a, d) ////
//// Writes data byte d to the MMC/SD address a. Intelligently ////
//// manages a write buffer, therefore you may need to call ////
//// mmcsd_flush_buffer() to flush the buffer. ////
//// ////
//// mmcsd_write_data(a, n, p) ////
//// Writes n bytes of data from pointer p to the MMC/SD card ////
//// starting at address a. This function intelligently manages ////
//// a write buffer, therefore if you may need to call ////
//// mmcsd_flush_buffer() to flush any buffered characters. ////
//// returns 0 if OK, non-zero if error. ////
//// ////
//// mmcsd_read_block(a, s, p) ////
//// Reads an entire page from the SD/MMC. Keep in mind that the ////
//// start of the read has to be aligned to a block ////
//// (Address % 512 = 0). Therefore s must be evenly divisible by ////
//// 512. At the application level it is much more effecient to ////
//// to use mmcsd_read_data() or mmcsd_read_byte(). Returns 0 ////
//// if successful, non-zero if error. ////
//// ////
//// mmcsd_write_block(a, s, p): ////
//// Writes an entire page to the SD/MMC. This will write an ////
//// entire page to the SD/MMC, so the address and size must be ////
//// evenly divisble by 512. At the application level it is much ////
//// more effecient to use mmcsd_write_data() or mmcsd_write_byte().////
//// Returns 0 if successful, non-zero if error. ////
//// ////
//// mmcsd_print_cid(): Displays all data in the Card Identification ////
//// Register. Note this only works on SD cards. ////
//// ////
//// mmcsd_print_csd(): Displays all data in the Card Specific Data ////
//// Register. Note this only works on SD cards. ////
//// ////
//// ////
//// --Non-User Functions-- ////
//// ////
//// mmcsd_go_idle_state(): Sends the GO_IDLE_STATE command to the ////
//// SD/MMC. ////
//// mmcsd_send_op_cond(): Sends the SEND_OP_COND command to the ////
//// SD. Note this command only works on SD. ////
//// mmcsd_send_if_cond(): Sends the SEND_IF_COND command to the ////
//// SD. Note this command only works on SD. ////
//// mmcsd_sd_status(): Sends the SD_STATUS command to the SD. Note ////
//// This command only works on SD cards. ////
//// mmcsd_send_status(): Sends the SEND_STATUS command to the ////
//// SD/MMC. ////
//// mmcsd_set_blocklen(): Sends the SET_BLOCKLEN command along with ////
//// the desired block length. ////
//// mmcsd_app_cmd(): Sends the APP_CMD command to the SD. This only ////
//// works on SD cards and is used just before any ////
//// SD-only command (e.g. send_op_cond()). ////
//// mmcsd_read_ocr(): Sends the READ_OCR command to the SD/MMC. ////
//// mmcsd_crc_on_off(): Sends the CRC_ON_OFF command to the SD/MMC ////
//// along with a bit to turn the CRC on/off. ////
//// mmcsd_send_cmd(): Sends a command and argument to the SD/MMC. ////
//// mmcsd_get_r1(): Waits for an R1 response from the SD/MMC and ////
//// then saves the response to a buffer. ////
//// mmcsd_get_r2(): Waits for an R2 response from the SD/MMC and ////
//// then saves the response to a buffer. ////
//// mmcsd_get_r3(): Waits for an R3 response from the SD/MMC and ////
//// then saves the response to a buffer. ////
//// mmcsd_get_r7(): Waits for an R7 response from the SD/MMC and ////
//// then saves the response to a buffer. ////
//// mmcsd_wait_for_token(): Waits for a specified token from the ////
//// SD/MMC. ////
//// mmcsd_crc7(): Generates a CRC7 using a pointer to some data, ////
//// and how many bytes long the data is. ////
//// mmcsd_crc16(): Generates a CRC16 using a pointer to some data, ////
//// and how many bytes long the data is. ////
//// ////
/////////////////////////////////////////////////////////////////////////
//// (C) Copyright 2007 Custom Computer Services ////
//// This source code may only be used by licensed users of the CCS ////
//// C compiler. This source code may only be distributed to other ////
//// licensed users of the CCS C compiler. No other use, ////
//// reproduction or distribution is permitted without written ////
//// permission. Derivative programs created using this software ////
//// in object code form are not restricted in any way. ////
/////////////////////////////////////////////////////////////////////////
#ifndef MMCSD_C
#define MMCSD_C
/////////////////////
//// ////
//// User Config ////
//// ////
/////////////////////
#include "stdint.h"
#ifndef MMCSD_PIN_SCL
#define MMCSD_PIN_SCL PIN_C3 //o
#define MMCSD_PIN_SDI PIN_C4 //i
#define MMCSD_PIN_SDO PIN_C5 //o
#define MMCSD_PIN_SELECT PIN_B4 //o
#endif
#use spi(MASTER, DI=MMCSD_PIN_SDI, DO=MMCSD_PIN_SDO, CLK=MMCSD_PIN_SCL, BITS=8, MSB_FIRST, MODE=3, stream=mmcsd_spi, BAUD=10000)
////////////////////////
//// ////
//// Useful Defines ////
//// ////
////////////////////////
enum MMCSD_err
{MMCSD_GOODEC = 0,
MMCSD_IDLE = 0x01,
MMCSD_ERASE_RESET = 0x02,
MMCSD_ILLEGAL_CMD = 0x04,
MMCSD_CRC_ERR = 0x08,
MMCSD_ERASE_SEQ_ERR = 0x10,
MMCSD_ADDR_ERR = 0x20,
MMCSD_PARAM_ERR = 0x40,
RESP_TIMEOUT = 0x80};
#define GO_IDLE_STATE 0
#define SEND_OP_COND 1
#define SEND_IF_COND 8
#define SEND_CSD 9
#define SEND_CID 10
#define SD_STATUS 13
#define SEND_STATUS 13
#define SET_BLOCKLEN 16
#define READ_SINGLE_BLOCK 17
#define WRITE_BLOCK 24
#define SD_SEND_OP_COND 41
#define APP_CMD 55
#define READ_OCR 58
#define CRC_ON_OFF 59
#define IDLE_TOKEN 0x01
#define DATA_START_TOKEN 0xFE
#define MMCSD_MAX_BLOCK_SIZE 512
////////////////////////
/// ///
/// Global Variables ///
/// ///
////////////////////////
uint8_t g_mmcsd_buffer[MMCSD_MAX_BLOCK_SIZE];
int1 g_CRC_enabled;
int1 g_MMCSDBufferChanged;
uint32_t g_mmcsdBufferAddress;
enum _card_type{SD, MMC} g_card_type;
uint32_t g_mmcsdPartitionOffset;
/////////////////////////////
//// ////
//// Function Prototypes ////
//// ////
/////////////////////////////
MMCSD_err mmcsd_init(int32 offset);
MMCSD_err mmcsd_read_data(uint32_t address, uint16_t size, uint8_t* ptr);
MMCSD_err mmcsd_read_block(uint32_t address, uint16_t size, uint8_t* ptr);
MMCSD_err mmcsd_write_data(uint32_t address, uint16_t size, uint8_t* ptr);
MMCSD_err mmcsd_write_block(uint32_t address, uint16_t size, uint8_t* ptr);
MMCSD_err mmcsd_go_idle_state(void);
MMCSD_err mmcsd_send_op_cond(void);
MMCSD_err mmcsd_send_if_cond(uint8_t r7[]);
MMCSD_err mmcsd_print_csd();
MMCSD_err mmcsd_print_cid();
MMCSD_err mmcsd_sd_status(uint8_t r2[]);
MMCSD_err mmcsd_send_status(uint8_t r2[]);
MMCSD_err mmcsd_set_blocklen(uint32_t blocklen);
MMCSD_err mmcsd_read_single_block(uint32_t address);
MMCSD_err mmcsd_write_single_block(uint32_t address);
MMCSD_err mmcsd_sd_send_op_cond(void);
MMCSD_err mmcsd_app_cmd(void);
MMCSD_err mmcsd_read_ocr(uint8_t* r1);
MMCSD_err mmcsd_crc_on_off(int1 crc_enabled);
MMCSD_err mmcsd_send_cmd(uint8_t cmd, uint32_t arg);
MMCSD_err mmcsd_get_r1(void);
MMCSD_err mmcsd_get_r2(uint8_t r2[]);
MMCSD_err mmcsd_get_r3(uint8_t r3[]);
MMCSD_err mmcsd_get_r7(uint8_t r7[]);
MMCSD_err mmcsd_wait_for_token(uint8_t token);
uint8_t mmcsd_crc7(char *data, uint8_t length);
uint16_t mmcsd_crc16(char *data, uint8_t length);
void mmcsd_select();
void mmcsd_deselect();
/// Fast Functions ! ///
MMCSD_err mmcsd_load_buffer(void);
MMCSD_err mmcsd_flush_buffer(void);
MMCSD_err mmcsd_move_buffer(uint32_t new_addr);
MMCSD_err mmcsd_read_byte(uint32_t addr, char* data);
MMCSD_err mmcsd_write_byte(uint32_t addr, char data);
void mmcsd_check_part(uint16_t off)
{
printf("find offset from physical to logical %X\r\n",g_mmcsd_buffer[off] ) ;
if (g_mmcsd_buffer[off + 1] == 0x00)
{ printf("check part OK \r\n");
g_mmcsdPartitionOffset = g_mmcsd_buffer[off];
// active partition
/* uint8_t t;
t = g_mmcsd_buffer[off + 4];
if (t == 0x04 || t == 0x06 || t == 0x0B)
{
// FAT16 or FAT32 partition
= make32(
g_mmcsd_buffer[off + 11], g_mmcsd_buffer[off + 10],
g_mmcsd_buffer[off + 9], g_mmcsd_buffer[off + 8]) * MMCSD_MAX_BLOCK_SIZE;
}*/
}
}
//////////////////////////////////
//// ////
//// Function Implementations ////
//// ////
//////////////////////////////////
MMCSD_err mmcsd_init(){
uint8_t
i,
r1;
printf("CARD Starting... \r\n");
g_CRC_enabled = TRUE;
g_mmcsdBufferAddress = 0;
output_drive(MMCSD_PIN_SCL);
output_drive(MMCSD_PIN_SDO);
output_drive(MMCSD_PIN_SELECT);
output_float(MMCSD_PIN_SDI);
mmcsd_deselect();
delay_ms(15);
/* begin initialization */
i = 0;
do{
delay_ms(1);
mmcsd_select();
r1=mmcsd_go_idle_state();
mmcsd_deselect();
i++;
if(i == 0xFF){
mmcsd_deselect();
return r1;
}
} while(!bit_test(r1, 0));
i = 0;
do{
delay_ms(1);
mmcsd_select();
r1=mmcsd_send_op_cond();
mmcsd_deselect();
i++;
if(i == 0xFF){
mmcsd_deselect();
return r1;
}
} while(r1 & MMCSD_IDLE);
/* figure out if we have an SD or MMC */
mmcsd_select();
r1=mmcsd_app_cmd();
r1=mmcsd_sd_send_op_cond();
mmcsd_deselect();
printf("The card is: 0x%2X => ",r1);
/* an mmc will return an 0x04 here */
if(r1 == 0x04){
g_card_type = MMC; printf("MMC.\r\n");}
else{
g_card_type = SD; printf("SD.\r\n");
// mmcsd_print_cid();
// mmcsd_print_csd();
}
delay_ms(200);
/* set block length to 512 bytes */
mmcsd_select();
r1 = mmcsd_set_blocklen(MMCSD_MAX_BLOCK_SIZE);
if(r1 != MMCSD_GOODEC){
mmcsd_deselect();
return r1;
}
mmcsd_deselect();
mmcsd_select();
r1 = mmcsd_crc_on_off(0);
if(r1 != MMCSD_GOODEC) {
mmcsd_deselect();
return r1;
}
mmcsd_deselect();
r1 = mmcsd_load_buffer();
g_mmcsdPartitionOffset = 0;
//mmcsd_check_part(0x1EE);
//mmcsd_check_part(0x1DE);
//mmcsd_check_part(0x1CE);
//mmcsd_check_part(0x1BE);
//we need to calculate the offset adresss between phy. and logic. address from the offset sector at the address 0x1C6
// printf("find offset from physical to logical %X\r\n",g_mmcsd_buffer[0x1C6] ) ;
//more detail at http://www.secure-digital-card-source-code-driver.com/layout-of-a-mmc-or-sd-card-with-fat/the-boot-record
if (g_mmcsd_buffer[0x1C6] < 80 )
g_mmcsdBufferAddress = g_mmcsd_buffer[0x1C6]*0x200;
// for card => 1GByte need to add more offset
else
g_mmcsdBufferAddress = g_mmcsd_buffer[0x1C6]*0x200 + 0x10000;
printf("offset Adr : %lX\r\n",g_mmcsdBufferAddress ) ;
g_mmcsdPartitionOffset=g_mmcsdBufferAddress; ;
r1 = mmcsd_load_buffer();
if (g_mmcsd_buffer[0] == 0xEB){
printf("Boot sector found.\n" ) ;
}
return r1;
}
MMCSD_err mmcsd_read_data(uint32_t address, uint16_t size, uint8_t* ptr)
{
MMCSD_err r1;
uint16_t i; // counter for loops
for(i = 0; i < size; i++)
{
r1 = mmcsd_read_byte(address++, ptr++);
if(r1 != MMCSD_GOODEC)
return r1;
}
return MMCSD_GOODEC;
}
MMCSD_err mmcsd_read_block(uint32_t address, uint16_t size, uint8_t* ptr)
{
MMCSD_err ec;
uint16_t i; // counter for loops
// send command
mmcsd_select();
ec = mmcsd_read_single_block(address);
if(ec != MMCSD_GOODEC)
{
mmcsd_deselect();
return ec;
}
// wait for the data start token
ec = mmcsd_wait_for_token(DATA_START_TOKEN);
if(ec != MMCSD_GOODEC)
{
mmcsd_deselect();
return ec;
}
// read in the data
for(i = 0; i < size; i += 1)
ptr[i] = spi_xfer(mmcsd_spi, 0xFF);
if(g_CRC_enabled)
{
/* check the crc */
if(make16(spi_xfer(mmcsd_spi, 0xFF), spi_xfer(mmcsd_spi, 0xFF)) != mmcsd_crc16(g_mmcsd_buffer, MMCSD_MAX_BLOCK_SIZE))
{
mmcsd_deselect();
return MMCSD_CRC_ERR;
}
}
else
{
/* have the card transmit the CRC, but ignore it */
spi_xfer(mmcsd_spi, 0xFF);
spi_xfer(mmcsd_spi, 0xFF);
}
mmcsd_deselect();
//printf("print block \r\n") ;
//for(i = 0; i < 32; i += 1)
// printf("adr :%x -> %X \r\n", i, ptr[i] ) ;
// printf(" %c ", ptr[i] ) ;
return MMCSD_GOODEC;
}
MMCSD_err mmcsd_write_data(uint32_t address, uint16_t size, uint8_t* ptr)
{
MMCSD_err ec;
uint16_t i; // counter for loops
for(i = 0; i < size; i++)
{
ec = mmcsd_write_byte(address++, *ptr++);
// if (*ptr++ != 0x00)
// printf(" writ data at adr : -> %lX data -> %X : i = %X, size = %X\r\n", address, ptr[i],i,size ) ;
if(ec != MMCSD_GOODEC)
return ec;
}
return MMCSD_GOODEC;
}
MMCSD_err mmcsd_write_block(uint32_t address, uint16_t size, uint8_t* ptr)
{
MMCSD_err ec;
uint16_t i;
// send command
mmcsd_select();
ec = mmcsd_write_single_block(address);
if(ec != MMCSD_GOODEC)
{
mmcsd_deselect();
return ec;
}
// send a data start token
spi_xfer(mmcsd_spi, DATA_START_TOKEN);
// send all the data
for(i = 0; i < size; i += 1)
spi_xfer(mmcsd_spi, ptr[i]);
// if the CRC is enabled we have to calculate it, otherwise just send an 0xFFFF
if(g_CRC_enabled)
spi_xfer(mmcsd_spi, mmcsd_crc16(ptr, size));
else
{
spi_xfer(mmcsd_spi, 0xFF);
spi_xfer(mmcsd_spi, 0xFF);
}
// get the error code back from the card; "data accepted" is 0bXXX00101
ec = mmcsd_get_r1();
if(ec & 0x0A)
{
mmcsd_deselect();
return ec;
}
// wait for the line to go back high, this indicates that the write is complete
while(spi_xfer(mmcsd_spi, 0xFF) == 0);
mmcsd_deselect();
return MMCSD_GOODEC;
}
MMCSD_err mmcsd_go_idle_state(void)
{
mmcsd_send_cmd(GO_IDLE_STATE, 0);
return mmcsd_get_r1();
}
MMCSD_err mmcsd_send_op_cond(void)
{
mmcsd_send_cmd(SEND_OP_COND, 0);
return mmcsd_get_r1();
}
MMCSD_err mmcsd_send_if_cond(uint8_t r7[])
{
mmcsd_send_cmd(SEND_IF_COND, 0x45A);
return mmcsd_get_r7(r7);
}
MMCSD_err mmcsd_print_csd()
{
uint8_t
buf[16],
i,
r1;
// MMCs don't support this command
if(g_card_type == MMC)
return MMCSD_PARAM_ERR;
mmcsd_select();
mmcsd_send_cmd(SEND_CSD, 0);
r1 = mmcsd_get_r1();
if(r1 != MMCSD_GOODEC)
{
mmcsd_deselect();
return r1;
}
r1 = mmcsd_wait_for_token(DATA_START_TOKEN);
if(r1 != MMCSD_GOODEC)
{
mmcsd_deselect();
return r1;
}
for(i = 0; i < 16; i++)
buf[i] = spi_xfer(mmcsd_spi, 0xFF);
mmcsd_deselect();
printf("\r\nCSD_STRUCTURE: %X", (buf[0] & 0x0C) >> 2);
printf("\r\nTAAC: %X", buf[1]);
printf("\r\nNSAC: %X", buf[2]);
printf("\r\nTRAN_SPEED: %X", buf[3]);
printf("\r\nCCC: %lX", (make16(buf[4], buf[5]) & 0xFFF0) >> 4);
printf("\r\nREAD_BL_LEN: %X", buf[5] & 0x0F);
printf("\r\nREAD_BL_PARTIAL: %X", (buf[6] & 0x80) >> 7);
printf("\r\nWRITE_BLK_MISALIGN: %X", (buf[6] & 0x40) >> 6);
printf("\r\nREAD_BLK_MISALIGN: %X", (buf[6] & 0x20) >> 5);
printf("\r\nDSR_IMP: %X", (buf[6] & 0x10) >> 4);
printf("\r\nC_SIZE: %lX", (((buf[6] & 0x03) << 10) | (buf[7] << 2) | ((buf[8] & 0xC0) >> 6)));
printf("\r\nVDD_R_CURR_MIN: %X", (buf[8] & 0x38) >> 3);
printf("\r\nVDD_R_CURR_MAX: %X", buf[8] & 0x07);
printf("\r\nVDD_W_CURR_MIN: %X", (buf[9] & 0xE0) >> 5);
printf("\r\nVDD_W_CURR_MAX: %X", (buf[9] & 0x1C) >> 2);
printf("\r\nC_SIZE_MULT: %X", ((buf[9] & 0x03) << 1) | ((buf[10] & 0x80) >> 7));
printf("\r\nERASE_BLK_EN: %X", (buf[10] & 0x40) >> 6);
printf("\r\nSECTOR_SIZE: %X", ((buf[10] & 0x3F) << 1) | ((buf[11] & 0x80) >> 7));
printf("\r\nWP_GRP_SIZE: %X", buf[11] & 0x7F);
printf("\r\nWP_GRP_ENABLE: %X", (buf[12] & 0x80) >> 7);
printf("\r\nR2W_FACTOR: %X", (buf[12] & 0x1C) >> 2);
printf("\r\nWRITE_BL_LEN: %X", ((buf[12] & 0x03) << 2) | ((buf[13] & 0xC0) >> 6));
printf("\r\nWRITE_BL_PARTIAL: %X", (buf[13] & 0x20) >> 5);
printf("\r\nFILE_FORMAT_GRP: %X", (buf[14] & 0x80) >> 7);
printf("\r\nCOPY: %X", (buf[14] & 0x40) >> 6);
printf("\r\nPERM_WRITE_PROTECT: %X", (buf[14] & 0x20) >> 5);
printf("\r\nTMP_WRITE_PROTECT: %X", (buf[14] & 0x10) >> 4);
printf("\r\nFILE_FORMAT: %X", (buf[14] & 0x0C) >> 2);
printf("\r\nCRC: %X", buf[15]);
return r1;
}
MMCSD_err mmcsd_print_cid()
{
uint8_t
buf[16],
i,
r1;
// MMCs don't support this command
if(g_card_type == MMC)
return MMCSD_PARAM_ERR;
mmcsd_select();
mmcsd_send_cmd(SEND_CID, 0);
r1 = mmcsd_get_r1();
if(r1 != MMCSD_GOODEC)
{
mmcsd_deselect();
return r1;
}
r1 = mmcsd_wait_for_token(DATA_START_TOKEN);
if(r1 != MMCSD_GOODEC)
{
mmcsd_deselect();
return r1;
}
for(i = 0; i < 16; i++)
buf[i] = spi_xfer(mmcsd_spi, 0xFF);
mmcsd_deselect();
printf("\r\nManufacturer ID: %X", buf[0]);
printf("\r\nOEM/Application ID: %c%c", buf[1], buf[2]);
printf("\r\nOEM/Application ID: %c%c%c%c%c", buf[3], buf[4], buf[5], buf[6], buf[7]);
printf("\r\nProduct Revision: %X", buf[8]);
printf("\r\nSerial Number: %X%X%X%X", buf[9], buf[10], buf[11], buf[12]);
printf("\r\nManufacturer Date Code: %X%X", buf[13] & 0x0F, buf[14]);
printf("\r\nCRC-7 Checksum: %X", buf[15]);
return r1;
}
MMCSD_err mmcsd_sd_status(uint8_t r2[])
{
uint8_t i;
mmcsd_select();
mmcsd_send_cmd(APP_CMD, 0);
r2[0]=mmcsd_get_r1();
mmcsd_deselect();
mmcsd_select();
mmcsd_send_cmd(SD_STATUS, 0);
for(i = 0; i < 64; i++)
spi_xfer(mmcsd_spi, 0xFF);
mmcsd_deselect();
return mmcsd_get_r2(r2);
}
MMCSD_err mmcsd_send_status(uint8_t r2[])
{
mmcsd_send_cmd(SEND_STATUS, 0);
return mmcsd_get_r2(r2);
}
MMCSD_err mmcsd_set_blocklen(uint32_t blocklen)
{
mmcsd_send_cmd(SET_BLOCKLEN, blocklen);
return mmcsd_get_r1();
}
MMCSD_err mmcsd_read_single_block(uint32_t address)
{
mmcsd_send_cmd(READ_SINGLE_BLOCK, address);
return mmcsd_get_r1();
}
MMCSD_err mmcsd_write_single_block(uint32_t address)
{
mmcsd_send_cmd(WRITE_BLOCK, address);
return mmcsd_get_r1();
}
MMCSD_err mmcsd_sd_send_op_cond(void)
{
mmcsd_send_cmd(SD_SEND_OP_COND, 0);
return mmcsd_get_r1();
}
MMCSD_err mmcsd_app_cmd(void)
{
mmcsd_send_cmd(APP_CMD, 0);
return mmcsd_get_r1();
}
MMCSD_err mmcsd_read_ocr(int r3[])
{
mmcsd_send_cmd(READ_OCR, 0);
return mmcsd_get_r3(r3);
}
MMCSD_err mmcsd_crc_on_off(int1 crc_enabled)
{
mmcsd_send_cmd(CRC_ON_OFF, crc_enabled);
g_CRC_enabled = crc_enabled;
return mmcsd_get_r1();
}
MMCSD_err mmcsd_send_cmd(uint8_t cmd, uint32_t arg)
{
uint8_t packet[6]; // the entire command, argument, and crc in one variable
// construct the packet
// every command on an SD card is or'ed with 0x40
packet[0] = cmd | 0x40;
packet[1] = make8(arg, 3);
packet[2] = make8(arg, 2);
packet[3] = make8(arg, 1);
packet[4] = make8(arg, 0);
// calculate the crc if needed
if(g_CRC_enabled)
packet[5] = mmcsd_crc7(packet, 5);
else
packet[5] = 0xFF;
// transfer the command and argument, with an extra 0xFF hacked in there
spi_xfer(mmcsd_spi, packet[0]);
spi_xfer(mmcsd_spi, packet[1]);
spi_xfer(mmcsd_spi, packet[2]);
spi_xfer(mmcsd_spi, packet[3]);
spi_xfer(mmcsd_spi, packet[4]);
spi_xfer(mmcsd_spi, packet[5]);
//! spi_write2(packet[0]);
//! spi_write2(packet[1]);
//! spi_write2(packet[2]);
//! spi_write2(packet[3]);
//! spi_write2(packet[4]);
//! spi_write2(packet[5]);
return MMCSD_GOODEC;
}
MMCSD_err mmcsd_get_r1(void)
{
uint8_t
response = 0, // place to hold the response coming back from the SPI line
timeout = 0xFF; // maximum amount loops to wait for idle before getting impatient and leaving the function with an error code
// loop until timeout == 0
while(timeout)
{
// read what's on the SPI line
// the SD/MMC requires that you leave the line high when you're waiting for data from it
response = spi_xfer(mmcsd_spi, 0xFF);
//response = spi_xfer(mmcsd_spi, 0x00);//leave the line idle
// check to see if we got a response
if(response != 0xFF)
{
// fill in the response that we got and leave the function
return response;
}
// wait for a little bit longer
timeout--;
}
// for some reason, we didn't get a response back from the card
// return the proper error codes
return RESP_TIMEOUT;
}
MMCSD_err mmcsd_get_r2(uint8_t r2[])
{
r2[1] = mmcsd_get_r1();
r2[0] = spi_xfer(mmcsd_spi, 0xFF);
return 0;
}
MMCSD_err mmcsd_get_r3(uint8_t r3[])
{
return mmcsd_get_r7(r3);
}
MMCSD_err mmcsd_get_r7(uint8_t r7[])
{
uint8_t i; // counter for loop
// the top byte of r7 is r1
r7[4]=mmcsd_get_r1();
// fill in the other 4 bytes
for(i = 0; i < 4; i++)
r7[3 - i] = spi_xfer(mmcsd_spi, 0xFF);
return r7[4];
}
MMCSD_err mmcsd_wait_for_token(uint8_t token)
{
MMCSD_err r1;
// get a token
r1 = mmcsd_get_r1();
// check to see if the token we recieved was the one that we were looking for
if(r1 == token)
return MMCSD_GOODEC;
// if that wasn't right, return the error
return r1;
}
unsigned int8 mmcsd_crc7(char *data,uint8_t length)
{
uint8_t i, ibit, c, crc;
crc = 0x00; // Set initial value
for (i = 0; i < length; i++, data++)
{
c = *data;
for (ibit = 0; ibit < 8; ibit++)
{
crc = crc << 1;
if ((c ^ crc) & 0x80) crc = crc ^ 0x09; // ^ is XOR
c = c << 1;
}
crc = crc & 0x7F;
}
shift_left(&crc, 1, 1); // MMC card stores the result in the top 7 bits so shift them left 1
// Should shift in a 1 not a 0 as one of the cards I have won't work otherwise
return crc;
}
uint16_t mmcsd_crc16(char *data, uint8_t length)
{
uint8_t i, ibit, c;
uint16_t crc;
crc = 0x0000; // Set initial value
for (i = 0; i < length; i++, data++)
{
c = *data;
for (ibit = 0; ibit < 8; ibit++)
{
crc = crc << 1;
if ((c ^ crc) & 0x8000) crc = crc ^ 0x1021; // ^ is XOR
c = c << 1;
}
crc = crc & 0x7FFF;
}
shift_left(&crc, 2, 1); // MMC card stores the result in the top 7 bits so shift them left 1
// Should shift in a 1 not a 0 as one of the cards I have won't work otherwise
return crc;
}
void mmcsd_select()
{
output_low(MMCSD_PIN_SELECT);
}
void mmcsd_deselect()
{
spi_xfer(mmcsd_spi, 0xFF);
output_high(MMCSD_PIN_SELECT);
}
MMCSD_err mmcsd_load_buffer(void)
{
g_MMCSDBufferChanged = FALSE;
return(mmcsd_read_block(g_mmcsdBufferAddress, MMCSD_MAX_BLOCK_SIZE, g_mmcsd_buffer));
}
MMCSD_err mmcsd_flush_buffer(void)
{
if (g_MMCSDBufferChanged)
{ //printf(" flush buffer \r\n");
g_MMCSDBufferChanged = FALSE;
return(mmcsd_write_block(g_mmcsdBufferAddress, MMCSD_MAX_BLOCK_SIZE, g_mmcsd_buffer));
}
return(0); //ok
}
MMCSD_err mmcsd_move_buffer(uint32_t new_addr)
{
MMCSD_err ec = MMCSD_GOODEC;
uint32_t
//cur_block,
new_block,address;
//int value;
// make sure we're still on the same block
//cur_block = g_mmcsdBufferAddress - (g_mmcsdBufferAddress % MMCSD_MAX_BLOCK_SIZE);
// new_block = (new_addr) % MMCSD_MAX_BLOCK_SIZE;
// printf(" move buffer: new ad = %lX, new_addr mod max_block --> %lX \n\r", new_addr, new_block) ;
address = new_addr-g_mmcsdPartitionOffset;
// new_block = new_addr - (new_addr % MMCSD_MAX_BLOCK_SIZE);
new_block = address - (address % MMCSD_MAX_BLOCK_SIZE);
// printf(" move buffer: new block befor offset = %lX \n\r", new_block) ;
new_block += g_mmcsdPartitionOffset;
// printf(" move buffer: g_mmcsdBufferAddress = %lX \n\r", g_mmcsdBufferAddress) ;
// printf(" move buffer: new block = %lX \n\r", new_block) ;
//if(cur_block != new_block)
if(g_mmcsdBufferAddress != new_block)
{ // printf(" move buffer: g_mmcsdBufferAddress = %lX :new block = %lX \n\r", g_mmcsdBufferAddress, new_block ) ;
// dump the old buffer
if (g_MMCSDBufferChanged)
{ printf(" update data\n\r") ;
ec = mmcsd_flush_buffer();
if(ec != MMCSD_GOODEC)
return ec;
g_MMCSDBufferChanged = FALSE;
}
// figure out the best place for a block
g_mmcsdBufferAddress = new_block;
// printf(" move buffer: new_block = %lX \n\r", g_mmcsdBufferAddress) ;
// load up a new buffer
ec = mmcsd_load_buffer();
//printf("move_buffer: load new buffer: \r\n");
// for(address= 0 ; address <= 0x20; address++)
// {
// printf(" %c", g_mmcsd_buffer[address]) ;
// }
// printf("\r\n");
}
return ec;
}
MMCSD_err mmcsd_read_byte(uint32_t addr, char* data)
{
MMCSD_err ec;
ec = mmcsd_move_buffer(addr);
if(ec != MMCSD_GOODEC)
{
return ec;
}
*data = g_mmcsd_buffer[addr % MMCSD_MAX_BLOCK_SIZE];
return MMCSD_GOODEC;
}
MMCSD_err mmcsd_write_byte(uint32_t addr, char data){
//int32 value;
MMCSD_err ec;
ec = mmcsd_move_buffer(addr);
if(ec != MMCSD_GOODEC)
return ec;
g_mmcsd_buffer[addr % MMCSD_MAX_BLOCK_SIZE] = data;
// value = addr % MMCSD_MAX_BLOCK_SIZE;
// printf("value=%lX:x%c ",value,g_mmcsd_buffer[value]) ;
g_MMCSDBufferChanged = TRUE;
return MMCSD_GOODEC;
}
#endif
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