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746 lines
21 KiB
C
746 lines
21 KiB
C
8 years ago
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/*------------------------------------------------------------------------*/
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/* LPCXpresso176x: MMCv3/SDv1/SDv2 (SPI mode) control module */
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/*------------------------------------------------------------------------*/
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/*
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/ Copyright (C) 2015, ChaN, all right reserved.
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/
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/ * This software is a free software and there is NO WARRANTY.
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/ * No restriction on use. You can use, modify and redistribute it for
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/ personal, non-profit or commercial products UNDER YOUR RESPONSIBILITY.
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/ * Redistributions of source code must retain the above copyright notice.
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/
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/-------------------------------------------------------------------------*/
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#define SSP_CH 1 /* SSP channel to use (0:SSP0, 1:SSP1) */
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#define CCLK 100000000UL /* cclk frequency [Hz] */
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#define PCLK_SSP 50000000UL /* PCLK frequency to be supplied for SSP [Hz] */
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#define SCLK_FAST 25000000UL /* SCLK frequency under normal operation [Hz] */
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#define SCLK_SLOW 400000UL /* SCLK frequency under initialization [Hz] */
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//#define MMC_CD (!(FIO2PIN1 & _BV(1))) /* Card detect (yes:true, no:false, default:true) */
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#define MMC_WP 0 /* Write protected (yes:true, no:false, default:false) */
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#if SSP_CH == 0
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#define SSPxDR SSP0DR
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#define SSPxSR SSP0SR
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#define SSPxCR0 SSP0CR0
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#define SSPxCR1 SSP0CR1
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#define SSPxCPSR SSP0CPSR
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#define CS_LOW() {FIO0CLR2 = _BV(0);} /* Set P0.16 low */
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#define CS_HIGH() {FIO0SET2 = _BV(0);} /* Set P0.16 high */
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#define PCSSPx PCSSP0
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#define PCLKSSPx PCLK_SSP0
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#define ATTACH_SSP() {\
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__set_PINSEL(0, 15, 2); /* SCK0 */\
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__set_PINSEL(0, 17, 2); /* MISO0 */\
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__set_PINSEL(0, 18, 2); /* MOSI0 */\
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FIO0DIR |= _BV(16); /* CS# (P0.16) */\
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}
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#elif SSP_CH == 1
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#define SSPxDR SSP1DR
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#define SSPxSR SSP1SR
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#define SSPxCR0 SSP1CR0
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#define SSPxCR1 SSP1CR1
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#define SSPxCPSR SSP1CPSR
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#define CS_LOW() {FIO0CLR0 = _BV(6);} /* Set P0.6 low */
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#define CS_HIGH() {FIO0SET0 = _BV(6);} /* Set P0.6 high */
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#define PCSSPx PCSSP1
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#define PCLKSSPx PCLK_SSP1
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#define ATTACH_SSP() {\
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__set_PINSEL(0, 7, 2); /* SCK1 */\
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__set_PINSEL(0, 8, 2); /* MISO1 */\
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__set_PINSEL(0, 9, 2); /* MOSI1 */\
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FIO0DIR |= _BV(6); /* CS# (P0.6) */\
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}
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#endif
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#if PCLK_SSP * 1 == CCLK
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#define PCLKDIV_SSP PCLKDIV_1
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#elif PCLK_SSP * 2 == CCLK
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#define PCLKDIV_SSP PCLKDIV_2
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#elif PCLK_SSP * 4 == CCLK
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#define PCLKDIV_SSP PCLKDIV_4
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#elif PCLK_SSP * 8 == CCLK
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#define PCLKDIV_SSP PCLKDIV_8
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#else
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#error Invalid CCLK:PCLK_SSP combination.
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#endif
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#define FCLK_FAST() { SSPxCR0 = (SSPxCR0 & 0x00FF) | ((PCLK_SSP / 2 / SCLK_FAST) - 1) << 8; }
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#define FCLK_SLOW() { SSPxCR0 = (SSPxCR0 & 0x00FF) | ((PCLK_SSP / 2 / SCLK_SLOW) - 1) << 8; }
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/*--------------------------------------------------------------------------
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Module Private Functions
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---------------------------------------------------------------------------*/
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#include "LPC176x.h"
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#include "diskio.h"
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/* MMC/SD command */
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#define CMD0 (0) /* GO_IDLE_STATE */
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#define CMD1 (1) /* SEND_OP_COND (MMC) */
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#define ACMD41 (0x80+41) /* SEND_OP_COND (SDC) */
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#define CMD8 (8) /* SEND_IF_COND */
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#define CMD9 (9) /* SEND_CSD */
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#define CMD10 (10) /* SEND_CID */
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#define CMD12 (12) /* STOP_TRANSMISSION */
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#define ACMD13 (0x80+13) /* SD_STATUS (SDC) */
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#define CMD16 (16) /* SET_BLOCKLEN */
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#define CMD17 (17) /* READ_SINGLE_BLOCK */
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#define CMD18 (18) /* READ_MULTIPLE_BLOCK */
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#define CMD23 (23) /* SET_BLOCK_COUNT (MMC) */
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#define ACMD23 (0x80+23) /* SET_WR_BLK_ERASE_COUNT (SDC) */
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#define CMD24 (24) /* WRITE_BLOCK */
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#define CMD25 (25) /* WRITE_MULTIPLE_BLOCK */
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#define CMD32 (32) /* ERASE_ER_BLK_START */
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#define CMD33 (33) /* ERASE_ER_BLK_END */
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#define CMD38 (38) /* ERASE */
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#define CMD48 (48) /* READ_EXTR_SINGLE */
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#define CMD49 (49) /* WRITE_EXTR_SINGLE */
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#define CMD55 (55) /* APP_CMD */
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#define CMD58 (58) /* READ_OCR */
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static volatile
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DSTATUS Stat = STA_NOINIT; /* Physical drive status */
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static volatile
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UINT Timer1, Timer2; /* 1kHz decrement timer stopped at zero (disk_timerproc()) */
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static
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BYTE CardType; /* Card type flags */
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/*-----------------------------------------------------------------------*/
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/* Send/Receive data to the MMC (Platform dependent) */
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/*-----------------------------------------------------------------------*/
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/* Exchange a byte */
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static
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BYTE xchg_spi (
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BYTE dat /* Data to send */
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)
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{
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SSPxDR = dat;
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while (SSPxSR & 0x10) ;
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return SSPxDR;
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}
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/* Receive multiple byte */
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static
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void rcvr_spi_multi (
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BYTE *buff, /* Pointer to data buffer */
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UINT btr /* Number of bytes to receive (16, 64 or 512) */
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)
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{
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UINT n;
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WORD d;
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SSPxCR0 |= 0x000F; /* Select 16-bit mode */
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for (n = 0; n < 8; n++) /* Push 8 frames into pipeline */
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SSPxDR = 0xFFFF;
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btr -= 16;
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while (btr >= 2) { /* Receive the data block into buffer */
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btr -= 2;
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while (!(SSPxSR & _BV(2))) ; /* Wait for any data in receive FIFO */
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d = SSPxDR;
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SSPxDR = 0xFFFF;
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*buff++ = d >> 8;
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*buff++ = d;
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}
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for (n = 0; n < 8; n++) { /* Pop remaining frames from pipeline */
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while (!(SSPxSR & _BV(2))) ;
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d = SSPxDR;
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*buff++ = d >> 8;
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*buff++ = d;
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}
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SSPxCR0 &= 0xFFF7; /* Select 8-bit mode */
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}
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#if _DISKIO_WRITE
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/* Send multiple byte */
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static
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void xmit_spi_multi (
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const BYTE *buff, /* Pointer to the data */
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UINT btx /* Number of bytes to send (multiple of 16) */
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)
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{
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UINT n;
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WORD d;
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SSPxCR0 |= 0x000F; /* Select 16-bit mode */
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for (n = 0; n < 8; n++) { /* Push 8 frames into pipeline */
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d = *buff++;
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d = d << 8 | *buff++;
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SSPxDR = d;
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}
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btx -= 16;
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while (btx >= 2) { /* Transmit data block */
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btx -= 2;
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d = *buff++;
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d = d << 8 | *buff++;
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while (!(SSPxSR & _BV(2))) ; /* Wait for any data in receive FIFO */
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SSPxDR; SSPxDR = d;
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}
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for (n = 0; n < 8; n++) { /* Flush pipeline */
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while (!(SSPxSR & _BV(2))) ;
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SSPxDR;
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}
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SSPxCR0 &= 0xFFF7; /* Select 8-bit mode */
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}
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#endif
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/*-----------------------------------------------------------------------*/
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/* Wait for card ready */
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/*-----------------------------------------------------------------------*/
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static
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int wait_ready ( /* 1:Ready, 0:Timeout */
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UINT wt /* Timeout [ms] */
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)
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{
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BYTE d;
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Timer2 = wt;
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do {
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d = xchg_spi(0xFF);
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/* This loop takes a time. Insert rot_rdq() here for multitask envilonment. */
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} while (d != 0xFF && Timer2); /* Wait for card goes ready or timeout */
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return (d == 0xFF) ? 1 : 0;
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}
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/*-----------------------------------------------------------------------*/
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/* Deselect card and release SPI */
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/*-----------------------------------------------------------------------*/
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static
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void deselect (void)
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{
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CS_HIGH(); /* CS = H */
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xchg_spi(0xFF); /* Dummy clock (force DO hi-z for multiple slave SPI) */
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}
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/*-----------------------------------------------------------------------*/
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/* Select card and wait for ready */
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/*-----------------------------------------------------------------------*/
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static
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int select (void) /* 1:OK, 0:Timeout */
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{
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CS_LOW(); /* CS = L */
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xchg_spi(0xFF); /* Dummy clock (force DO enabled) */
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if (wait_ready(500)) return 1; /* Leading busy check: Wait for card ready */
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deselect(); /* Timeout */
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return 0;
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}
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/*-----------------------------------------------------------------------*/
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/* Control SPI module (Platform dependent) */
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/*-----------------------------------------------------------------------*/
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static
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void power_on (void) /* Enable SSP module and attach it to I/O pads */
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{
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__set_PCONP(PCSSPx, 1); /* Enable SSP module */
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__set_PCLKSEL(PCLKSSPx, PCLKDIV_SSP); /* Select PCLK frequency for SSP */
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SSPxCPSR = 2; /* CPSDVSR=2 */
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SSPxCR0 = 0x0007; /* Set mode: SPI mode 0, 8-bit */
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SSPxCR1 = 0x2; /* Enable SSP with Master */
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ATTACH_SSP(); /* Attach SSP module to I/O pads */
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CS_HIGH(); /* Set CS# high */
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for (Timer1 = 10; Timer1; ) ; /* 10ms */
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}
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static
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void power_off (void) /* Disable SPI function */
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{
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select(); /* Wait for card ready */
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deselect();
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}
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/*-----------------------------------------------------------------------*/
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/* Receive a data packet from the MMC */
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/*-----------------------------------------------------------------------*/
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static
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int rcvr_datablock ( /* 1:OK, 0:Error */
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BYTE *buff, /* Data buffer */
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UINT btr /* Data block length (byte) */
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)
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{
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BYTE token;
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Timer1 = 200;
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do { /* Wait for DataStart token in timeout of 200ms */
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token = xchg_spi(0xFF);
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/* This loop will take a time. Insert rot_rdq() here for multitask envilonment. */
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} while ((token == 0xFF) && Timer1);
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if(token != 0xFE) return 0; /* Function fails if invalid DataStart token or timeout */
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rcvr_spi_multi(buff, btr); /* Store trailing data to the buffer */
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xchg_spi(0xFF); xchg_spi(0xFF); /* Discard CRC */
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return 1; /* Function succeeded */
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}
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/*-----------------------------------------------------------------------*/
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/* Send a data packet to the MMC */
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/*-----------------------------------------------------------------------*/
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#if _DISKIO_WRITE
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static
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int xmit_datablock ( /* 1:OK, 0:Failed */
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const BYTE *buff, /* Ponter to 512 byte data to be sent */
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BYTE token /* Token */
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)
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{
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BYTE resp;
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if (!wait_ready(500)) return 0; /* Leading busy check: Wait for card ready to accept data block */
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xchg_spi(token); /* Send token */
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if (token == 0xFD) return 1; /* Do not send data if token is StopTran */
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xmit_spi_multi(buff, 512); /* Data */
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xchg_spi(0xFF); xchg_spi(0xFF); /* Dummy CRC */
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resp = xchg_spi(0xFF); /* Receive data resp */
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return (resp & 0x1F) == 0x05 ? 1 : 0; /* Data was accepted or not */
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/* Busy check is done at next transmission */
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}
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#endif
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/*-----------------------------------------------------------------------*/
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/* Send a command packet to the MMC */
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/*-----------------------------------------------------------------------*/
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static
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BYTE send_cmd ( /* Return value: R1 resp (bit7==1:Failed to send) */
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BYTE cmd, /* Command index */
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DWORD arg /* Argument */
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||
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)
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{
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BYTE n, res;
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if (cmd & 0x80) { /* Send a CMD55 prior to ACMD<n> */
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cmd &= 0x7F;
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res = send_cmd(CMD55, 0);
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||
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if (res > 1) return res;
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||
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}
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|
|
/* Select the card and wait for ready except to stop multiple block read */
|
||
|
|
if (cmd != CMD12) {
|
||
|
|
deselect();
|
||
|
|
if (!select()) return 0xFF;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Send command packet */
|
||
|
|
xchg_spi(0x40 | cmd); /* Start + command index */
|
||
|
|
xchg_spi((BYTE)(arg >> 24)); /* Argument[31..24] */
|
||
|
|
xchg_spi((BYTE)(arg >> 16)); /* Argument[23..16] */
|
||
|
|
xchg_spi((BYTE)(arg >> 8)); /* Argument[15..8] */
|
||
|
|
xchg_spi((BYTE)arg); /* Argument[7..0] */
|
||
|
|
n = 0x01; /* Dummy CRC + Stop */
|
||
|
|
if (cmd == CMD0) n = 0x95; /* Valid CRC for CMD0(0) */
|
||
|
|
if (cmd == CMD8) n = 0x87; /* Valid CRC for CMD8(0x1AA) */
|
||
|
|
xchg_spi(n);
|
||
|
|
|
||
|
|
/* Receive command resp */
|
||
|
|
if (cmd == CMD12) xchg_spi(0xFF); /* Diacard following one byte when CMD12 */
|
||
|
|
n = 10; /* Wait for response (10 bytes max) */
|
||
|
|
do
|
||
|
|
res = xchg_spi(0xFF);
|
||
|
|
while ((res & 0x80) && --n);
|
||
|
|
|
||
|
|
return res; /* Return received response */
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
/*--------------------------------------------------------------------------
|
||
|
|
|
||
|
|
Public Functions
|
||
|
|
|
||
|
|
---------------------------------------------------------------------------*/
|
||
|
|
|
||
|
|
|
||
|
|
/*-----------------------------------------------------------------------*/
|
||
|
|
/* Initialize disk drive */
|
||
|
|
/*-----------------------------------------------------------------------*/
|
||
|
|
|
||
|
|
DSTATUS disk_initialize (
|
||
|
|
BYTE drv /* Physical drive number (0) */
|
||
|
|
)
|
||
|
|
{
|
||
|
|
BYTE n, cmd, ty, ocr[4];
|
||
|
|
|
||
|
|
|
||
|
|
if (drv) return STA_NOINIT; /* Supports only drive 0 */
|
||
|
|
power_on(); /* Initialize SPI */
|
||
|
|
|
||
|
|
if (Stat & STA_NODISK) return Stat; /* Is a card existing in the soket? */
|
||
|
|
|
||
|
|
FCLK_SLOW();
|
||
|
|
for (n = 10; n; n--) xchg_spi(0xFF); /* Send 80 dummy clocks */
|
||
|
|
|
||
|
|
ty = 0;
|
||
|
|
if (send_cmd(CMD0, 0) == 1) { /* Put the card SPI state */
|
||
|
|
Timer1 = 1000; /* Initialization timeout = 1 sec */
|
||
|
|
if (send_cmd(CMD8, 0x1AA) == 1) { /* Is the catd SDv2? */
|
||
|
|
for (n = 0; n < 4; n++) ocr[n] = xchg_spi(0xFF); /* Get 32 bit return value of R7 resp */
|
||
|
|
if (ocr[2] == 0x01 && ocr[3] == 0xAA) { /* Does the card support 2.7-3.6V? */
|
||
|
|
while (Timer1 && send_cmd(ACMD41, 1UL << 30)) ; /* Wait for end of initialization with ACMD41(HCS) */
|
||
|
|
if (Timer1 && send_cmd(CMD58, 0) == 0) { /* Check CCS bit in the OCR */
|
||
|
|
for (n = 0; n < 4; n++) ocr[n] = xchg_spi(0xFF);
|
||
|
|
ty = (ocr[0] & 0x40) ? CT_SD2 | CT_BLOCK : CT_SD2; /* Check if the card is SDv2 */
|
||
|
|
}
|
||
|
|
}
|
||
|
|
} else { /* Not an SDv2 card */
|
||
|
|
if (send_cmd(ACMD41, 0) <= 1) { /* SDv1 or MMCv3? */
|
||
|
|
ty = CT_SD1; cmd = ACMD41; /* SDv1 (ACMD41(0)) */
|
||
|
|
} else {
|
||
|
|
ty = CT_MMC; cmd = CMD1; /* MMCv3 (CMD1(0)) */
|
||
|
|
}
|
||
|
|
while (Timer1 && send_cmd(cmd, 0)) ; /* Wait for the card leaves idle state */
|
||
|
|
if (!Timer1 || send_cmd(CMD16, 512) != 0) /* Set block length: 512 */
|
||
|
|
ty = 0;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
CardType = ty; /* Card type */
|
||
|
|
deselect();
|
||
|
|
|
||
|
|
if (ty) { /* OK */
|
||
|
|
FCLK_FAST(); /* Set fast clock */
|
||
|
|
Stat &= ~STA_NOINIT; /* Clear STA_NOINIT flag */
|
||
|
|
} else { /* Failed */
|
||
|
|
power_off();
|
||
|
|
Stat = STA_NOINIT;
|
||
|
|
}
|
||
|
|
|
||
|
|
return Stat;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
/*-----------------------------------------------------------------------*/
|
||
|
|
/* Get disk status */
|
||
|
|
/*-----------------------------------------------------------------------*/
|
||
|
|
|
||
|
|
DSTATUS disk_status (
|
||
|
|
BYTE drv /* Physical drive number (0) */
|
||
|
|
)
|
||
|
|
{
|
||
|
|
if (drv) return STA_NOINIT; /* Supports only drive 0 */
|
||
|
|
|
||
|
|
return Stat; /* Return disk status */
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
/*-----------------------------------------------------------------------*/
|
||
|
|
/* Read sector(s) */
|
||
|
|
/*-----------------------------------------------------------------------*/
|
||
|
|
|
||
|
|
DRESULT disk_read (
|
||
|
|
BYTE drv, /* Physical drive number (0) */
|
||
|
|
BYTE *buff, /* Pointer to the data buffer to store read data */
|
||
|
|
DWORD sector, /* Start sector number (LBA) */
|
||
|
|
UINT count /* Number of sectors to read (1..128) */
|
||
|
|
)
|
||
|
|
{
|
||
|
|
BYTE cmd;
|
||
|
|
|
||
|
|
|
||
|
|
if (drv || !count) return RES_PARERR; /* Check parameter */
|
||
|
|
if (Stat & STA_NOINIT) return RES_NOTRDY; /* Check if drive is ready */
|
||
|
|
if (!(CardType & CT_BLOCK)) sector *= 512; /* LBA ot BA conversion (byte addressing cards) */
|
||
|
|
|
||
|
|
cmd = count > 1 ? CMD18 : CMD17; /* READ_MULTIPLE_BLOCK : READ_SINGLE_BLOCK */
|
||
|
|
if (send_cmd(cmd, sector) == 0) {
|
||
|
|
do {
|
||
|
|
if (!rcvr_datablock(buff, 512)) break;
|
||
|
|
buff += 512;
|
||
|
|
} while (--count);
|
||
|
|
if (cmd == CMD18) send_cmd(CMD12, 0); /* STOP_TRANSMISSION */
|
||
|
|
}
|
||
|
|
deselect();
|
||
|
|
|
||
|
|
return count ? RES_ERROR : RES_OK; /* Return result */
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
/*-----------------------------------------------------------------------*/
|
||
|
|
/* Write sector(s) */
|
||
|
|
/*-----------------------------------------------------------------------*/
|
||
|
|
|
||
|
|
#if _DISKIO_WRITE
|
||
|
|
DRESULT disk_write (
|
||
|
|
BYTE drv, /* Physical drive number (0) */
|
||
|
|
const BYTE *buff, /* Ponter to the data to write */
|
||
|
|
DWORD sector, /* Start sector number (LBA) */
|
||
|
|
UINT count /* Number of sectors to write (1..128) */
|
||
|
|
)
|
||
|
|
{
|
||
|
|
if (drv || !count) return RES_PARERR; /* Check parameter */
|
||
|
|
if (Stat & STA_NOINIT) return RES_NOTRDY; /* Check drive status */
|
||
|
|
if (Stat & STA_PROTECT) return RES_WRPRT; /* Check write protect */
|
||
|
|
|
||
|
|
if (!(CardType & CT_BLOCK)) sector *= 512; /* LBA ==> BA conversion (byte addressing cards) */
|
||
|
|
|
||
|
|
if (count == 1) { /* Single sector write */
|
||
|
|
if ((send_cmd(CMD24, sector) == 0) /* WRITE_BLOCK */
|
||
|
|
&& xmit_datablock(buff, 0xFE)) {
|
||
|
|
count = 0;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else { /* Multiple sector write */
|
||
|
|
if (CardType & CT_SDC) send_cmd(ACMD23, count); /* Predefine number of sectors */
|
||
|
|
if (send_cmd(CMD25, sector) == 0) { /* WRITE_MULTIPLE_BLOCK */
|
||
|
|
do {
|
||
|
|
if (!xmit_datablock(buff, 0xFC)) break;
|
||
|
|
buff += 512;
|
||
|
|
} while (--count);
|
||
|
|
if (!xmit_datablock(0, 0xFD)) count = 1; /* STOP_TRAN token */
|
||
|
|
}
|
||
|
|
}
|
||
|
|
deselect();
|
||
|
|
|
||
|
|
return count ? RES_ERROR : RES_OK; /* Return result */
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
|
||
|
|
/*-----------------------------------------------------------------------*/
|
||
|
|
/* Miscellaneous drive controls other than data read/write */
|
||
|
|
/*-----------------------------------------------------------------------*/
|
||
|
|
|
||
|
|
#if _DISKIO_IOCTL
|
||
|
|
|
||
|
|
DRESULT disk_ioctl (
|
||
|
|
BYTE drv, /* Physical drive number (0) */
|
||
|
|
BYTE cmd, /* Control command code */
|
||
|
|
void *buff /* Pointer to the conrtol data */
|
||
|
|
)
|
||
|
|
{
|
||
|
|
DRESULT res;
|
||
|
|
BYTE n, csd[16], *ptr = buff;
|
||
|
|
DWORD *dp, st, ed, csize;
|
||
|
|
#if _DISKIO_ISDIO
|
||
|
|
SDIO_CMD *sdio = buff;
|
||
|
|
BYTE rc, *buf;
|
||
|
|
UINT dc;
|
||
|
|
#endif
|
||
|
|
|
||
|
|
if (drv) return RES_PARERR; /* Check parameter */
|
||
|
|
if (Stat & STA_NOINIT) return RES_NOTRDY; /* Check if drive is ready */
|
||
|
|
|
||
|
|
res = RES_ERROR;
|
||
|
|
|
||
|
|
switch (cmd) {
|
||
|
|
case CTRL_SYNC: /* Wait for end of internal write process of the drive */
|
||
|
|
if (select()) res = RES_OK;
|
||
|
|
break;
|
||
|
|
|
||
|
|
case GET_SECTOR_COUNT: /* Get drive capacity in unit of sector (DWORD) */
|
||
|
|
if ((send_cmd(CMD9, 0) == 0) && rcvr_datablock(csd, 16)) {
|
||
|
|
if ((csd[0] >> 6) == 1) { /* SDC ver 2.00 */
|
||
|
|
csize = csd[9] + ((WORD)csd[8] << 8) + ((DWORD)(csd[7] & 63) << 16) + 1;
|
||
|
|
*(DWORD*)buff = csize << 10;
|
||
|
|
} else { /* SDC ver 1.XX or MMC ver 3 */
|
||
|
|
n = (csd[5] & 15) + ((csd[10] & 128) >> 7) + ((csd[9] & 3) << 1) + 2;
|
||
|
|
csize = (csd[8] >> 6) + ((WORD)csd[7] << 2) + ((WORD)(csd[6] & 3) << 10) + 1;
|
||
|
|
*(DWORD*)buff = csize << (n - 9);
|
||
|
|
}
|
||
|
|
res = RES_OK;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
|
||
|
|
case GET_BLOCK_SIZE: /* Get erase block size in unit of sector (DWORD) */
|
||
|
|
if (CardType & CT_SD2) { /* SDC ver 2.00 */
|
||
|
|
if (send_cmd(ACMD13, 0) == 0) { /* Read SD status */
|
||
|
|
xchg_spi(0xFF);
|
||
|
|
if (rcvr_datablock(csd, 16)) { /* Read partial block */
|
||
|
|
for (n = 64 - 16; n; n--) xchg_spi(0xFF); /* Purge trailing data */
|
||
|
|
*(DWORD*)buff = 16UL << (csd[10] >> 4);
|
||
|
|
res = RES_OK;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
} else { /* SDC ver 1.XX or MMC */
|
||
|
|
if ((send_cmd(CMD9, 0) == 0) && rcvr_datablock(csd, 16)) { /* Read CSD */
|
||
|
|
if (CardType & CT_SD1) { /* SDC ver 1.XX */
|
||
|
|
*(DWORD*)buff = (((csd[10] & 63) << 1) + ((WORD)(csd[11] & 128) >> 7) + 1) << ((csd[13] >> 6) - 1);
|
||
|
|
} else { /* MMC */
|
||
|
|
*(DWORD*)buff = ((WORD)((csd[10] & 124) >> 2) + 1) * (((csd[11] & 3) << 3) + ((csd[11] & 224) >> 5) + 1);
|
||
|
|
}
|
||
|
|
res = RES_OK;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
|
||
|
|
case CTRL_TRIM: /* Erase a block of sectors (used when _USE_TRIM in ffconf.h is 1) */
|
||
|
|
if (!(CardType & CT_SDC)) break; /* Check if the card is SDC */
|
||
|
|
if (disk_ioctl(drv, MMC_GET_CSD, csd)) break; /* Get CSD */
|
||
|
|
if (!(csd[0] >> 6) && !(csd[10] & 0x40)) break; /* Check if sector erase can be applied to the card */
|
||
|
|
dp = buff; st = dp[0]; ed = dp[1]; /* Load sector block */
|
||
|
|
if (!(CardType & CT_BLOCK)) {
|
||
|
|
st *= 512; ed *= 512;
|
||
|
|
}
|
||
|
|
if (send_cmd(CMD32, st) == 0 && send_cmd(CMD33, ed) == 0 && send_cmd(CMD38, 0) == 0 && wait_ready(30000)) { /* Erase sector block */
|
||
|
|
res = RES_OK; /* FatFs does not check result of this command */
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
|
||
|
|
/* Following commands are never used by FatFs module */
|
||
|
|
|
||
|
|
case MMC_GET_TYPE: /* Get MMC/SDC type (BYTE) */
|
||
|
|
*ptr = CardType;
|
||
|
|
res = RES_OK;
|
||
|
|
break;
|
||
|
|
|
||
|
|
case MMC_GET_CSD: /* Read CSD (16 bytes) */
|
||
|
|
if (send_cmd(CMD9, 0) == 0 && rcvr_datablock(ptr, 16)) { /* READ_CSD */
|
||
|
|
res = RES_OK;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
|
||
|
|
case MMC_GET_CID: /* Read CID (16 bytes) */
|
||
|
|
if (send_cmd(CMD10, 0) == 0 && rcvr_datablock(ptr, 16)) { /* READ_CID */
|
||
|
|
res = RES_OK;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
|
||
|
|
case MMC_GET_OCR: /* Read OCR (4 bytes) */
|
||
|
|
if (send_cmd(CMD58, 0) == 0) { /* READ_OCR */
|
||
|
|
for (n = 4; n; n--) *ptr++ = xchg_spi(0xFF);
|
||
|
|
res = RES_OK;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
|
||
|
|
case MMC_GET_SDSTAT: /* Read SD status (64 bytes) */
|
||
|
|
if (send_cmd(ACMD13, 0) == 0) { /* SD_STATUS */
|
||
|
|
xchg_spi(0xFF);
|
||
|
|
if (rcvr_datablock(ptr, 64)) res = RES_OK;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
#if _DISKIO_ISDIO
|
||
|
|
case ISDIO_READ:
|
||
|
|
sdio = buff;
|
||
|
|
if (send_cmd(CMD48, 0x80000000 | sdio->func << 28 | sdio->addr << 9 | ((sdio->ndata - 1) & 0x1FF)) == 0) {
|
||
|
|
for (Timer1 = 1000; (rc = xchg_spi(0xFF)) == 0xFF && Timer1; ) ;
|
||
|
|
if (rc == 0xFE) {
|
||
|
|
for (buf = sdio->data, dc = sdio->ndata; dc; dc--) *buf++ = xchg_spi(0xFF);
|
||
|
|
for (dc = 514 - sdio->ndata; dc; dc--) xchg_spi(0xFF);
|
||
|
|
res = RES_OK;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
case ISDIO_WRITE:
|
||
|
|
sdio = buff;
|
||
|
|
if (send_cmd(CMD49, 0x80000000 | sdio->func << 28 | sdio->addr << 9 | ((sdio->ndata - 1) & 0x1FF)) == 0) {
|
||
|
|
xchg_spi(0xFF); xchg_spi(0xFE);
|
||
|
|
for (buf = sdio->data, dc = sdio->ndata; dc; dc--) xchg_spi(*buf++);
|
||
|
|
for (dc = 514 - sdio->ndata; dc; dc--) xchg_spi(0xFF);
|
||
|
|
if ((xchg_spi(0xFF) & 0x1F) == 0x05) res = RES_OK;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
case ISDIO_MRITE:
|
||
|
|
sdio = buff;
|
||
|
|
if (send_cmd(CMD49, 0x84000000 | sdio->func << 28 | sdio->addr << 9 | sdio->ndata >> 8) == 0) {
|
||
|
|
xchg_spi(0xFF); xchg_spi(0xFE);
|
||
|
|
xchg_spi(sdio->ndata);
|
||
|
|
for (dc = 513; dc; dc--) xchg_spi(0xFF);
|
||
|
|
if ((xchg_spi(0xFF) & 0x1F) == 0x05) res = RES_OK;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
#endif
|
||
|
|
default:
|
||
|
|
res = RES_PARERR;
|
||
|
|
}
|
||
|
|
|
||
|
|
deselect();
|
||
|
|
return res;
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
|
||
|
|
/*-----------------------------------------------------------------------*/
|
||
|
|
/* Device timer function */
|
||
|
|
/*-----------------------------------------------------------------------*/
|
||
|
|
/* This function must be called from timer interrupt routine in period
|
||
|
|
/ of 1 ms to generate card control timing.
|
||
|
|
*/
|
||
|
|
|
||
|
|
void disk_timerproc (void)
|
||
|
|
{
|
||
|
|
WORD n;
|
||
|
|
BYTE s;
|
||
|
|
|
||
|
|
|
||
|
|
n = Timer1; /* 1kHz decrement timer stopped at 0 */
|
||
|
|
if (n) Timer1 = --n;
|
||
|
|
n = Timer2;
|
||
|
|
if (n) Timer2 = --n;
|
||
|
|
|
||
|
|
s = Stat;
|
||
|
|
if (MMC_WP) { /* Write protected */
|
||
|
|
s |= STA_PROTECT;
|
||
|
|
} else { /* Write enabled */
|
||
|
|
s &= ~STA_PROTECT;
|
||
|
|
}
|
||
|
|
//if (MMC_CD) { /* Card is in socket */
|
||
|
|
s &= ~STA_NODISK;
|
||
|
|
//} else { /* Socket empty */
|
||
|
|
// s |= (STA_NODISK | STA_NOINIT);
|
||
|
|
//}
|
||
|
|
Stat = s;
|
||
|
|
}
|
||
|
|
|