📄 mmc.c
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}
}
Usb_write_byte(Mmc_rd_byte()); /* read 16 bytes from FIFO */
Usb_write_byte(Mmc_rd_byte());
Usb_write_byte(Mmc_rd_byte());
Usb_write_byte(Mmc_rd_byte());
Usb_write_byte(Mmc_rd_byte());
Usb_write_byte(Mmc_rd_byte());
Usb_write_byte(Mmc_rd_byte());
Usb_write_byte(Mmc_rd_byte());
Usb_write_byte(Mmc_rd_byte());
Usb_write_byte(Mmc_rd_byte());
Usb_write_byte(Mmc_rd_byte());
Usb_write_byte(Mmc_rd_byte());
Usb_write_byte(Mmc_rd_byte());
Usb_write_byte(Mmc_rd_byte());
Usb_write_byte(Mmc_rd_byte());
Usb_write_byte(Mmc_rd_byte());
gl_mem_tick = MMC_DATA_TIME;
while (!Mmc_read_ready()) /* wait data in FIFO 1 */
{
if (gl_mem_tick == MMC_TIME_OUT)
{
gl_mem_failure = TRUE;
return KO;
}
}
Usb_write_byte(Mmc_rd_byte()); /* read 16 bytes from FIFO */
Usb_write_byte(Mmc_rd_byte());
Usb_write_byte(Mmc_rd_byte());
Usb_write_byte(Mmc_rd_byte());
Usb_write_byte(Mmc_rd_byte());
Usb_write_byte(Mmc_rd_byte());
Usb_write_byte(Mmc_rd_byte());
Usb_write_byte(Mmc_rd_byte());
Usb_write_byte(Mmc_rd_byte());
Usb_write_byte(Mmc_rd_byte());
Usb_write_byte(Mmc_rd_byte());
Usb_write_byte(Mmc_rd_byte());
Usb_write_byte(Mmc_rd_byte());
Usb_write_byte(Mmc_rd_byte());
Usb_write_byte(Mmc_rd_byte());
Usb_write_byte(Mmc_rd_byte());
gl_mem_tick = MMC_DATA_TIME;
while (!Mmc_read_ready()) /* wait data in FIFO 1 */
{
if (gl_mem_tick == MMC_TIME_OUT)
{
gl_mem_failure = TRUE;
return KO;
}
}
Usb_write_byte(Mmc_rd_byte()); /* read 16 bytes from FIFO */
Usb_write_byte(Mmc_rd_byte());
Usb_write_byte(Mmc_rd_byte());
Usb_write_byte(Mmc_rd_byte());
Usb_write_byte(Mmc_rd_byte());
Usb_write_byte(Mmc_rd_byte());
Usb_write_byte(Mmc_rd_byte());
Usb_write_byte(Mmc_rd_byte());
Usb_write_byte(Mmc_rd_byte());
Usb_write_byte(Mmc_rd_byte());
Usb_write_byte(Mmc_rd_byte());
Usb_write_byte(Mmc_rd_byte());
Usb_write_byte(Mmc_rd_byte());
Usb_write_byte(Mmc_rd_byte());
Usb_write_byte(Mmc_rd_byte());
Usb_write_byte(Mmc_rd_byte());
if (begin_ping_pong)
{
begin_ping_pong = FALSE;
}
else
{
while (!Usb_tx_complete()); /* wait end of transfer */
Usb_clear_TXCMPL(); /* ack transfer */
}
Usb_set_TXRDY(); /* start usb transfer */
}
gl_ptr_mem += 512;
nb_sector--; /* 1 more sector read */
}
while (nb_sector != 0);
while (!Usb_tx_complete()); /* wait end of last transfer */
Usb_clear_TXCMPL(); /* ack transfer */
return OK; /* read done */
}
/*F**************************************************************************
* NAME: mmc_write_open
*----------------------------------------------------------------------------
* PARAMS:
* pos: address of the the next write data
* global: gl_ptr_mem
*
* return:
* status: OK: open done
* KO: open not done
*----------------------------------------------------------------------------
* PURPOSE:
* Open memory card in write mode (write block)
*----------------------------------------------------------------------------
* EXAMPLE:
*----------------------------------------------------------------------------
* NOTE:
* - pos must always be synchronized on a block boundary address
*----------------------------------------------------------------------------
* REQUIREMENTS:
*****************************************************************************/
bit mmc_write_open (Uint32 pos)
{
gl_ptr_mem = pos << 9; /* gl_ptr_mem = pos * 512 */
if (mmc_mem_busy)
{
mmc_mem_busy = FALSE;
while (Mmc_card_busy()); /* wait end of programming */
}
Mmc_disable_flow_ctrl(); /* enable clock for command */
Mmc_set_write(); /* dir from uc to card */
Mmc_write_block_cmd(gl_ptr_mem); /* send write block */
// while (!Mmc_command_sent()); /* wait end of transmission */
gl_mem_tick = MMC_RESP_TIME;
while (mmc_check_response() == MMC_ERR_RESP)
{
if (gl_mem_tick == MMC_TIME_OUT)
{
return KO;
}
}
if ((mmc_read_response() & MMC_TRAN_STATE_MSK) != MMC_TRAN_STATE)
{
return KO;
}
else
{
Mmc_enable_flow_ctrl(); /* stop clock when FIFO 1&2 empty */
Mmc_enable_send(); /* send data after response */
return OK;
}
}
/*F**************************************************************************
* NAME: mmc_write_close
*----------------------------------------------------------------------------
* PARAMS:
* global: gl_ptr_mem
*
* return:
*----------------------------------------------------------------------------
* PURPOSE:
* Memory card write close
* finish programming end of block
* release MMC card
*----------------------------------------------------------------------------
* EXAMPLE:
*----------------------------------------------------------------------------
* NOTE:
*----------------------------------------------------------------------------
* REQUIREMENTS:
*****************************************************************************/
void mmc_write_close (void)
{
while ((((Byte*)&gl_ptr_mem)[3] != 0x00) || ((((Byte*)&gl_ptr_mem)[2] & MMC_PAGE_MASK) != 0x00))
{
Mmc_wr_byte(0x00); /* dummy write to end of block */
gl_ptr_mem++;
}
Mmc_disable_flow_ctrl(); /* re-enable clock for CRC status */
mmc_mem_busy = TRUE; /* memory is busy */
}
/*F**************************************************************************
* NAME: mmc_write_byte
*----------------------------------------------------------------------------
* PARAMS:
* b: data to write
* global: gl_ptr_mem
*
* return:
* write status: OK: write done
* KO: write not done
*----------------------------------------------------------------------------
* PURPOSE:
* Card byte write function
*----------------------------------------------------------------------------
* EXAMPLE:
*----------------------------------------------------------------------------
* NOTE:
*----------------------------------------------------------------------------
* REQUIREMENTS:
*****************************************************************************/
bit mmc_write_byte (Byte b)
{
if (mmc_mem_busy)
{
mmc_mem_busy = FALSE;
while (Mmc_card_busy()); /* wait end of programming */
Mmc_write_block_cmd(gl_ptr_mem); /* write next block */
Mmc_enable_flow_ctrl(); /* stop clock when FIFO 1&2 empty */
Mmc_enable_send(); /* send data after response */
Mmc_wr_byte(b); /* write 1 byte to card */
gl_ptr_mem++;
return OK; /* write done */
}
else
{
Mmc_wr_byte(b); /* write 1 byte to card */
gl_ptr_mem++;
/* check if end of block */
if ((((Byte*)&gl_ptr_mem)[3] == 0x00) && ((((Byte*)&gl_ptr_mem)[2] & MMC_PAGE_MASK) == 0x00))
{
Mmc_disable_flow_ctrl(); /* re-enable clock for CRC status */
mmc_mem_busy = TRUE; /* memory is busy */
}
return OK; /* write done */
}
}
/*F**************************************************************************
* NAME: mmc_write_sector
*----------------------------------------------------------------------------
* PARAMS:
* nb_sector: number of contiguous sector to write
* global: gl_ptr_mem
*
* return:
* write status: OK: write done
* KO: write not done
*----------------------------------------------------------------------------
* PURPOSE:
* This function is an optimized function that writes nb-sector * 512 bytes
* from USB controller to MMC card
*----------------------------------------------------------------------------
* EXAMPLE:
*----------------------------------------------------------------------------
* NOTE:
* nb_sector always >= 1, can not be zero
*----------------------------------------------------------------------------
* REQUIREMENTS:
*****************************************************************************/
bit mmc_write_sector (Uint16 nb_sector)
{
Byte i;
do
{
if (mmc_mem_busy)
{
mmc_mem_busy = FALSE;
while (Mmc_card_busy()); /* wait end of programming */
Mmc_write_block_cmd(gl_ptr_mem); /* write next block */
Mmc_enable_flow_ctrl(); /* stop clock when FIFO 1&2 empty */
Mmc_enable_send(); /* send data after response */
}
for (i = 8; i != 0; i--) /* write 8x64b = 512b */
{
while (!Usb_rx_complete()); /* wait end of reception */
Mmc_wr_byte(Usb_read_byte()); /* write 16 bytes to FIFO */
Mmc_wr_byte(Usb_read_byte());
Mmc_wr_byte(Usb_read_byte());
Mmc_wr_byte(Usb_read_byte());
Mmc_wr_byte(Usb_read_byte());
Mmc_wr_byte(Usb_read_byte());
Mmc_wr_byte(Usb_read_byte());
Mmc_wr_byte(Usb_read_byte());
Mmc_wr_byte(Usb_read_byte());
Mmc_wr_byte(Usb_read_byte());
Mmc_wr_byte(Usb_read_byte());
Mmc_wr_byte(Usb_read_byte());
Mmc_wr_byte(Usb_read_byte());
Mmc_wr_byte(Usb_read_byte());
Mmc_wr_byte(Usb_read_byte());
Mmc_wr_byte(Usb_read_byte());
while (Mmc_write_busy()); /* wait no more data in FIFO 1 */
Mmc_wr_byte(Usb_read_byte()); /* write 16 bytes to FIFO */
Mmc_wr_byte(Usb_read_byte());
Mmc_wr_byte(Usb_read_byte());
Mmc_wr_byte(Usb_read_byte());
Mmc_wr_byte(Usb_read_byte());
Mmc_wr_byte(Usb_read_byte());
Mmc_wr_byte(Usb_read_byte());
Mmc_wr_byte(Usb_read_byte());
Mmc_wr_byte(Usb_read_byte());
Mmc_wr_byte(Usb_read_byte());
Mmc_wr_byte(Usb_read_byte());
Mmc_wr_byte(Usb_read_byte());
Mmc_wr_byte(Usb_read_byte());
Mmc_wr_byte(Usb_read_byte());
Mmc_wr_byte(Usb_read_byte());
Mmc_wr_byte(Usb_read_byte());
while (Mmc_write_busy()); /* wait no more data in FIFO 1 */
Mmc_wr_byte(Usb_read_byte()); /* write 16 bytes to FIFO */
Mmc_wr_byte(Usb_read_byte());
Mmc_wr_byte(Usb_read_byte());
Mmc_wr_byte(Usb_read_byte());
Mmc_wr_byte(Usb_read_byte());
Mmc_wr_byte(Usb_read_byte());
Mmc_wr_byte(Usb_read_byte());
Mmc_wr_byte(Usb_read_byte());
Mmc_wr_byte(Usb_read_byte());
Mmc_wr_byte(Usb_read_byte());
Mmc_wr_byte(Usb_read_byte());
Mmc_wr_byte(Usb_read_byte());
Mmc_wr_byte(Usb_read_byte());
Mmc_wr_byte(Usb_read_byte());
Mmc_wr_byte(Usb_read_byte());
Mmc_wr_byte(Usb_read_byte());
while (Mmc_write_busy()); /* wait no more data in FIFO 1 */
Mmc_wr_byte(Usb_read_byte()); /* write 16 bytes to FIFO */
Mmc_wr_byte(Usb_read_byte());
Mmc_wr_byte(Usb_read_byte());
Mmc_wr_byte(Usb_read_byte());
Mmc_wr_byte(Usb_read_byte());
Mmc_wr_byte(Usb_read_byte());
Mmc_wr_byte(Usb_read_byte());
Mmc_wr_byte(Usb_read_byte());
Mmc_wr_byte(Usb_read_byte());
Mmc_wr_byte(Usb_read_byte());
Mmc_wr_byte(Usb_read_byte());
Mmc_wr_byte(Usb_read_byte());
Mmc_wr_byte(Usb_read_byte());
Mmc_wr_byte(Usb_read_byte());
Mmc_wr_byte(Usb_read_byte());
Mmc_wr_byte(Usb_read_byte());
Usb_clear_RXOUT_PP(); /* usb read acknowledgement */
}
/* always end of page */
Mmc_disable_flow_ctrl(); /* re-enable clock for CRC status */
mmc_mem_busy = TRUE;
gl_ptr_mem += 512;
nb_sector--; /* 1 more sector written */
while (!Mmc_data_sent()); /* wait end of transmission */
}
while (nb_sector != 0);
return OK; /* write done */
}
/*F**************************************************************************
* NAME: mmc_format
*----------------------------------------------------------------------------
* PARAMS:
*
* return:
* Address of the format parameter structure in code
*----------------------------------------------------------------------------
* PURPOSE:
* This function is called by the fat_format function and returns a pointer
* to a table containing the format parameters.
*----------------------------------------------------------------------------
* EXAMPLE:
*----------------------------------------------------------------------------
* NOTE:
* MMC FORMAT PARAMETERS
* CAPACITY LBAs CYL HDs S/T CLUSTs S/C S/F FAT HID
* 4MB 7872 123 2 32 975 8 3 12 32
* 8MB 15680 245 2 32 1950 8 6 12 32
* 16MB 31360 490 2 32 3908 8 12 12 32
* 28MB 54784 428 4 32 13652 4 54 16 32
* 32MB 62720 490 4 32 15632 4 62 16 32
* 64MB 125440 490 8 32 31282 4 123 16 32
* 128MB 250880 980 8 32 62581 4 245 16 32
* 256MB 501760 980 16 32 62720 8 245 16 32
*----------------------------------------------------------------------------
* REQUIREMENTS:
*****************************************************************************/
s_format code * mmc_format (void)
{
code s_format mmc_tab_format[]=
{
/* nb_cylinder, nb_head, nb_sector, nb_hidden, nb_sector_per_cluster */
{ (Uint16)123, (Byte)2, (Byte)32, (Byte)32, (Byte)8 }, /* 4MB */
{ (Uint16)245, (Byte)2, (Byte)32, (Byte)32, (Byte)8 }, /* 8MB */
{ (Uint16)490, (Byte)2, (Byte)32, (Byte)32, (Byte)8 }, /* 16MB */
{ (Uint16)428, (Byte)4, (Byte)32, (Byte)32, (Byte)4 }, /* 28MB */
{ (Uint16)490, (Byte)4, (Byte)32, (Byte)32, (Byte)4 }, /* 32MB */
{ (Uint16)490, (Byte)8, (Byte)32, (Byte)32, (Byte)4 }, /* 64MB */
{ (Uint16)980, (Byte)8, (Byte)32, (Byte)32, (Byte)4 }, /* 128MB */
{ (Uint16)980, (Byte)16, (Byte)32, (Byte)32, (Byte)8 }, /* 256MB */
};
/* -- MMC Type Selection -- */
if (Mmc_disk_size() >= MMC_SIZE_256MB) return &mmc_tab_format[MMC_256MB];
if (Mmc_disk_size() >= MMC_SIZE_128MB) return &mmc_tab_format[MMC_128MB];
if (Mmc_disk_size() >= MMC_SIZE_64MB) return &mmc_tab_format[MMC_64MB];
if (Mmc_disk_size() >= MMC_SIZE_32MB) return &mmc_tab_format[MMC_32MB];
if (Mmc_disk_size() >= MMC_SIZE_28MB) return &mmc_tab_format[MMC_28MB];
if (Mmc_disk_size() >= MMC_SIZE_16MB) return &mmc_tab_format[MMC_16MB];
if (Mmc_disk_size() >= MMC_SIZE_8MB) return &mmc_tab_format[MMC_8MB];
return &mmc_tab_format[MMC_4MB];
}
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