-/*------------------------------------------------------------------------/\r
-/ Bitbanging MMCv3/SDv1/SDv2 (in SPI mode) control module for PFF\r
-/-------------------------------------------------------------------------/\r
-/\r
-/ Copyright (C) 2010, ChaN, all right reserved.\r
-/\r
-/ * This software is a free software and there is NO WARRANTY.\r
-/ * No restriction on use. You can use, modify and redistribute it for\r
-/ personal, non-profit or commercial products UNDER YOUR RESPONSIBILITY.\r
-/ * Redistributions of source code must retain the above copyright notice.\r
-/\r
-/--------------------------------------------------------------------------/\r
- Features:\r
-\r
- * Very Easy to Port\r
- It uses only 4-6 bit of GPIO port. No interrupt, no SPI port is used.\r
-\r
- * Platform Independent\r
- You need to modify only a few macros to control GPIO ports.\r
-\r
-/-------------------------------------------------------------------------*/\r
-\r
+/* ------------------------------------------------------------------------\r
+ * Bitbanging MMCv3/SDv1/SDv2 (in SPI mode) control module for PFF\r
+ * ------------------------------------------------------------------------\r
+ *\r
+ * Copyright (C) 2010, ChaN, all right reserved.\r
+ *\r
+ * * This software is a free software and there is NO WARRANTY.\r
+ * * No restriction on use. You can use, modify and redistribute it for\r
+ * personal, non-profit or commercial products UNDER YOUR RESPONSIBILITY.\r
+ * * Redistributions of source code must retain the above copyright notice.\r
+ *\r
+ * ------------------------------------------------------------------------\r
+ * Features:\r
+ *\r
+ * - Very Easy to Port\r
+ * It uses only 4-6 bit of GPIO port. No interrupt, no SPI port is used.\r
+ *\r
+ * - Platform Independent\r
+ * You need to modify only a few macros to control GPIO ports.\r
+ *\r
+ * ------------------------------------------------------------------------\r
+ */\r
\r
#include "diskio.h"\r
-\r
-#define H8_3069F_P4DR ((volatile uint8 *)0xFFFFD3)\r
-#define H8_3069F_PBDR ((volatile uint8 *)0xFFFFDA)\r
-\r
-#define PB_BIT_SCLK (1 << 5)\r
-#define PB_BIT_MOSI (1 << 6)\r
-#define PB_BIT_MISO (1 << 7)\r
-#define P4_BIT_CS (1 << 0)\r
+#include "portconf.h"\r
+#include "spi.h"\r
\r
/*-------------------------------------------------------------------------*/\r
/* Platform dependent macros and functions needed to be modified */\r
#define DLY_US(n) do { volatile uint32 dlycnt; for (dlycnt = 0; dlycnt < (n) * 10; dlycnt++) {} } while (0) /* Delay n microseconds */\r
#define FORWARD(d) do { } while (0) /* Data in-time processing function (depends on the project) */\r
\r
-#define CS_H() do { *H8_3069F_P4DR |= P4_BIT_CS; } while (0) /* Set MMC CS "high" */\r
-#define CS_L() do { *H8_3069F_P4DR &= ~P4_BIT_CS; } while (0) /* Set MMC CS "low" */\r
-#define CK_H() do { *H8_3069F_PBDR |= PB_BIT_SCLK; } while (0) /* Set MMC SCLK "high" */\r
-#define CK_L() do { *H8_3069F_PBDR &= ~PB_BIT_SCLK; } while (0) /* Set MMC SCLK "low" */\r
-#define DI_H() do { *H8_3069F_PBDR |= PB_BIT_MOSI; } while (0) /* Set MMC DI "high" */\r
-#define DI_L() do { *H8_3069F_PBDR &= ~PB_BIT_MOSI; } while (0) /* Set MMC DI "low" */\r
-#define DO ((*H8_3069F_PBDR & PB_BIT_MISO) ? 1 : 0) /* Get MMC DO value (high:true, low:false) */\r
-\r
-\r
/*--------------------------------------------------------------------------\r
-\r
- Module Private Functions\r
-\r
----------------------------------------------------------------------------*/\r
+ Module Private Functions\r
+ ---------------------------------------------------------------------------*/\r
\r
/* Definitions for MMC/SDC command */\r
#define CMD0 (0x40+0) /* GO_IDLE_STATE */\r
#define CMD1 (0x40+1) /* SEND_OP_COND (MMC) */\r
-#define ACMD41 (0xC0+41) /* SEND_OP_COND (SDC) */\r
+#define ACMD41 (0xC0+41) /* SEND_OP_COND (SDC) */\r
#define CMD8 (0x40+8) /* SEND_IF_COND */\r
#define CMD16 (0x40+16) /* SET_BLOCKLEN */\r
#define CMD17 (0x40+17) /* READ_SINGLE_BLOCK */\r
#define CT_SDC (CT_SD1|CT_SD2) /* SD */\r
#define CT_BLOCK 0x08 /* Block addressing */\r
\r
-\r
-\r
-static\r
-BYTE CardType; /* b0:MMC, b1:SDv1, b2:SDv2, b3:Block addressing */\r
-\r
-\r
-\r
-/*-----------------------------------------------------------------------*/\r
-/* Transmit a byte to the MMC (bitbanging) */\r
-/*-----------------------------------------------------------------------*/\r
-\r
-static\r
-void xmit_mmc (\r
- BYTE d /* Data to be sent */\r
-)\r
-{\r
- if (d & 0x80) DI_H(); else DI_L(); /* bit7 */\r
- CK_H(); CK_L();\r
- if (d & 0x40) DI_H(); else DI_L(); /* bit6 */\r
- CK_H(); CK_L();\r
- if (d & 0x20) DI_H(); else DI_L(); /* bit5 */\r
- CK_H(); CK_L();\r
- if (d & 0x10) DI_H(); else DI_L(); /* bit4 */\r
- CK_H(); CK_L();\r
- if (d & 0x08) DI_H(); else DI_L(); /* bit3 */\r
- CK_H(); CK_L();\r
- if (d & 0x04) DI_H(); else DI_L(); /* bit2 */\r
- CK_H(); CK_L();\r
- if (d & 0x02) DI_H(); else DI_L(); /* bit1 */\r
- CK_H(); CK_L();\r
- if (d & 0x01) DI_H(); else DI_L(); /* bit0 */\r
- CK_H(); CK_L();\r
-}\r
-\r
-\r
-\r
-/*-----------------------------------------------------------------------*/\r
-/* Receive a byte from the MMC (bitbanging) */\r
-/*-----------------------------------------------------------------------*/\r
-\r
-static\r
-BYTE rcvr_mmc (void)\r
-{\r
- BYTE r;\r
-\r
-\r
- DI_H(); /* Send 0xFF */\r
-\r
- r = 0; if (DO) r++; /* bit7 */\r
- CK_H(); CK_L();\r
- r <<= 1; if (DO) r++; /* bit6 */\r
- CK_H(); CK_L();\r
- r <<= 1; if (DO) r++; /* bit5 */\r
- CK_H(); CK_L();\r
- r <<= 1; if (DO) r++; /* bit4 */\r
- CK_H(); CK_L();\r
- r <<= 1; if (DO) r++; /* bit3 */\r
- CK_H(); CK_L();\r
- r <<= 1; if (DO) r++; /* bit2 */\r
- CK_H(); CK_L();\r
- r <<= 1; if (DO) r++; /* bit1 */\r
- CK_H(); CK_L();\r
- r <<= 1; if (DO) r++; /* bit0 */\r
- CK_H(); CK_L();\r
-\r
- return r;\r
-}\r
-\r
-\r
+static BYTE CardType; /* b0:MMC, b1:SDv1, b2:SDv2, b3:Block addressing */\r
\r
/*-----------------------------------------------------------------------*/\r
/* Skip bytes on the MMC (bitbanging) */\r
/*-----------------------------------------------------------------------*/\r
\r
-static\r
-void skip_mmc (\r
- WORD n /* Number of bytes to skip */\r
-)\r
+/* Number of bytes to skip */\r
+static void skip_mmc(WORD n)\r
{\r
- DI_H(); /* Send 0xFF */\r
-\r
- do {\r
- CK_H(); CK_L();\r
- CK_H(); CK_L();\r
- CK_H(); CK_L();\r
- CK_H(); CK_L();\r
- CK_H(); CK_L();\r
- CK_H(); CK_L();\r
- CK_H(); CK_L();\r
- CK_H(); CK_L();\r
- } while (--n);\r
+ do {\r
+ spi_rx();\r
+ } while (--n);\r
}\r
\r
-\r
-\r
/*-----------------------------------------------------------------------*/\r
/* Deselect the card and release SPI bus */\r
/*-----------------------------------------------------------------------*/\r
\r
-static\r
-void release_spi (void)\r
+static void release_spi(void)\r
{\r
- CS_H();\r
- rcvr_mmc();\r
+ spi_deselect();\r
+ spi_rx();\r
}\r
\r
\r
/* Send a command packet to MMC */\r
/*-----------------------------------------------------------------------*/\r
\r
-static\r
+ static\r
BYTE send_cmd (\r
- BYTE cmd, /* Command byte */\r
- DWORD arg /* Argument */\r
-)\r
+ BYTE cmd, /* Command byte */\r
+ DWORD arg /* Argument */\r
+ )\r
{\r
- BYTE n, res;\r
-\r
-\r
- if (cmd & 0x80) { /* ACMD<n> is the command sequense of CMD55-CMD<n> */\r
- cmd &= 0x7F;\r
- res = send_cmd(CMD55, 0);\r
- if (res > 1) return res;\r
- }\r
-\r
- /* Select the card */\r
- CS_H(); rcvr_mmc();\r
- CS_L(); rcvr_mmc();\r
-\r
- /* Send a command packet */\r
- xmit_mmc(cmd); /* Start + Command index */\r
- xmit_mmc((BYTE)(arg >> 24)); /* Argument[31..24] */\r
- xmit_mmc((BYTE)(arg >> 16)); /* Argument[23..16] */\r
- xmit_mmc((BYTE)(arg >> 8)); /* Argument[15..8] */\r
- xmit_mmc((BYTE)arg); /* Argument[7..0] */\r
- n = 0x01; /* Dummy CRC + Stop */\r
- if (cmd == CMD0) n = 0x95; /* Valid CRC for CMD0(0) */\r
- if (cmd == CMD8) n = 0x87; /* Valid CRC for CMD8(0x1AA) */\r
- xmit_mmc(n);\r
-\r
- /* Receive a command response */\r
- n = 10; /* Wait for a valid response in timeout of 10 attempts */\r
- do {\r
- res = rcvr_mmc();\r
- } while ((res & 0x80) && --n);\r
-\r
- return res; /* Return with the response value */\r
+ BYTE n, res;\r
+\r
+\r
+ if (cmd & 0x80) { /* ACMD<n> is the command sequense of CMD55-CMD<n> */\r
+ cmd &= 0x7F;\r
+ res = send_cmd(CMD55, 0);\r
+ if (res > 1) return res;\r
+ }\r
+\r
+ /* Select the card */\r
+ spi_deselect(); spi_rx();\r
+ spi_select(SpiTarget_SDCARD); spi_rx();\r
+\r
+ /* Send a command packet */\r
+ spi_tx(cmd); /* Start + Command index */\r
+ spi_tx((BYTE)(arg >> 24)); /* Argument[31..24] */\r
+ spi_tx((BYTE)(arg >> 16)); /* Argument[23..16] */\r
+ spi_tx((BYTE)(arg >> 8)); /* Argument[15..8] */\r
+ spi_tx((BYTE)arg); /* Argument[7..0] */\r
+ n = 0x01; /* Dummy CRC + Stop */\r
+ if (cmd == CMD0) n = 0x95; /* Valid CRC for CMD0(0) */\r
+ if (cmd == CMD8) n = 0x87; /* Valid CRC for CMD8(0x1AA) */\r
+ spi_tx(n);\r
+\r
+ /* Receive a command response */\r
+ n = 10; /* Wait for a valid response in timeout of 10 attempts */\r
+ do {\r
+ res = spi_rx();\r
+ } while ((res & 0x80) && --n);\r
+\r
+ return res; /* Return with the response value */\r
}\r
\r
\r
\r
/*--------------------------------------------------------------------------\r
\r
- Public Functions\r
+ Public Functions\r
\r
----------------------------------------------------------------------------*/\r
+ ---------------------------------------------------------------------------*/\r
\r
\r
/*-----------------------------------------------------------------------*/\r
\r
DSTATUS disk_initialize (void)\r
{\r
- BYTE n, cmd, ty, buf[4];\r
- UINT tmr;\r
-\r
-\r
- INIT_PORT();\r
-\r
- CS_H();\r
- skip_mmc(10); /* Dummy clocks */\r
-\r
- ty = 0;\r
- if (send_cmd(CMD0, 0) == 1) { /* Enter Idle state */\r
- if (send_cmd(CMD8, 0x1AA) == 1) { /* SDv2 */\r
- for (n = 0; n < 4; n++) buf[n] = rcvr_mmc(); /* Get trailing return value of R7 resp */\r
- if (buf[2] == 0x01 && buf[3] == 0xAA) { /* The card can work at vdd range of 2.7-3.6V */\r
- for (tmr = 1000; tmr; tmr--) { /* Wait for leaving idle state (ACMD41 with HCS bit) */\r
- if (send_cmd(ACMD41, 1UL << 30) == 0) break;\r
- DLY_US(1000);\r
- }\r
- if (tmr && send_cmd(CMD58, 0) == 0) { /* Check CCS bit in the OCR */\r
- for (n = 0; n < 4; n++) buf[n] = rcvr_mmc();\r
- ty = (buf[0] & 0x40) ? CT_SD2 | CT_BLOCK : CT_SD2; /* SDv2 (HC or SC) */\r
- }\r
- }\r
- } else { /* SDv1 or MMCv3 */\r
- if (send_cmd(ACMD41, 0) <= 1) {\r
- ty = CT_SD1; cmd = ACMD41; /* SDv1 */\r
- } else {\r
- ty = CT_MMC; cmd = CMD1; /* MMCv3 */\r
- }\r
- for (tmr = 1000; tmr; tmr--) { /* Wait for leaving idle state */\r
- if (send_cmd(ACMD41, 0) == 0) break;\r
- DLY_US(1000);\r
- }\r
- if (!tmr || send_cmd(CMD16, 512) != 0) /* Set R/W block length to 512 */\r
- ty = 0;\r
- }\r
- }\r
- CardType = ty;\r
- release_spi();\r
-\r
- return ty ? 0 : STA_NOINIT;\r
+ BYTE n, cmd, ty, buf[4];\r
+ UINT tmr;\r
+\r
+ INIT_PORT();\r
+\r
+ spi_deselect();\r
+ skip_mmc(10); /* Dummy clocks */\r
+\r
+ ty = 0;\r
+ if (send_cmd(CMD0, 0) == 1) { /* Enter Idle state */\r
+ if (send_cmd(CMD8, 0x1AA) == 1) { /* SDv2 */\r
+ for (n = 0; n < 4; n++) buf[n] = spi_rx(); /* Get trailing return value of R7 resp */\r
+ if (buf[2] == 0x01 && buf[3] == 0xAA) { /* The card can work at vdd range of 2.7-3.6V */\r
+ for (tmr = 1000; tmr; tmr--) { /* Wait for leaving idle state (ACMD41 with HCS bit) */\r
+ if (send_cmd(ACMD41, 1UL << 30) == 0) break;\r
+ DLY_US(1000);\r
+ }\r
+ if (tmr && send_cmd(CMD58, 0) == 0) { /* Check CCS bit in the OCR */\r
+ for (n = 0; n < 4; n++) buf[n] = spi_rx();\r
+ ty = (buf[0] & 0x40) ? CT_SD2 | CT_BLOCK : CT_SD2; /* SDv2 (HC or SC) */\r
+ }\r
+ }\r
+ } else { /* SDv1 or MMCv3 */\r
+ if (send_cmd(ACMD41, 0) <= 1) {\r
+ ty = CT_SD1; cmd = ACMD41; /* SDv1 */\r
+ } else {\r
+ ty = CT_MMC; cmd = CMD1; /* MMCv3 */\r
+ }\r
+ for (tmr = 1000; tmr; tmr--) { /* Wait for leaving idle state */\r
+ if (send_cmd(ACMD41, 0) == 0) break;\r
+ DLY_US(1000);\r
+ }\r
+ if (!tmr || send_cmd(CMD16, 512) != 0) /* Set R/W block length to 512 */\r
+ ty = 0;\r
+ }\r
+ }\r
+ CardType = ty;\r
+ release_spi();\r
+\r
+ return ty ? 0 : STA_NOINIT;\r
}\r
\r
\r
/*-----------------------------------------------------------------------*/\r
\r
DRESULT disk_readp (\r
- BYTE *buff, /* Pointer to the read buffer (NULL:Read bytes are forwarded to the stream) */\r
- DWORD lba, /* Sector number (LBA) */\r
- WORD ofs, /* Byte offset to read from (0..511) */\r
- WORD cnt /* Number of bytes to read (ofs + cnt mus be <= 512) */\r
-)\r
+ BYTE *buff, /* Pointer to the read buffer (NULL:Read bytes are forwarded to the stream) */\r
+ DWORD lba, /* Sector number (LBA) */\r
+ WORD ofs, /* Byte offset to read from (0..511) */\r
+ WORD cnt /* Number of bytes to read (ofs + cnt mus be <= 512) */\r
+ )\r
{\r
- DRESULT res;\r
- BYTE d;\r
- WORD bc, tmr;\r
+ DRESULT res;\r
+ BYTE d;\r
+ WORD bc, tmr;\r
\r
\r
- if (!(CardType & CT_BLOCK)) lba *= 512; /* Convert to byte address if needed */\r
+ if (!(CardType & CT_BLOCK)) lba *= 512; /* Convert to byte address if needed */\r
\r
- res = RES_ERROR;\r
- if (send_cmd(CMD17, lba) == 0) { /* READ_SINGLE_BLOCK */\r
+ res = RES_ERROR;\r
+ if (send_cmd(CMD17, lba) == 0) { /* READ_SINGLE_BLOCK */\r
\r
- tmr = 1000;\r
- do { /* Wait for data packet in timeout of 100ms */\r
- DLY_US(100);\r
- d = rcvr_mmc();\r
- } while (d == 0xFF && --tmr);\r
+ tmr = 1000;\r
+ do { /* Wait for data packet in timeout of 100ms */\r
+ DLY_US(100);\r
+ d = spi_rx();\r
+ } while (d == 0xFF && --tmr);\r
\r
- if (d == 0xFE) { /* A data packet arrived */\r
- bc = 514 - ofs - cnt;\r
+ if (d == 0xFE) { /* A data packet arrived */\r
+ bc = 514 - ofs - cnt;\r
\r
- /* Skip leading bytes */\r
- if (ofs) skip_mmc(ofs);\r
+ /* Skip leading bytes */\r
+ if (ofs) skip_mmc(ofs);\r
\r
- /* Receive a part of the sector */\r
- if (buff) { /* Store data to the memory */\r
- do\r
- *buff++ = rcvr_mmc();\r
- while (--cnt);\r
- } else { /* Forward data to the outgoing stream */\r
- do {\r
- d = rcvr_mmc();\r
- FORWARD(d);\r
- } while (--cnt);\r
- }\r
+ /* Receive a part of the sector */\r
+ if (buff) { /* Store data to the memory */\r
+ do\r
+ *buff++ = spi_rx();\r
+ while (--cnt);\r
+ } else { /* Forward data to the outgoing stream */\r
+ do {\r
+ d = spi_rx();\r
+ FORWARD(d);\r
+ } while (--cnt);\r
+ }\r
\r
- /* Skip trailing bytes and CRC */\r
- skip_mmc(bc);\r
+ /* Skip trailing bytes and CRC */\r
+ skip_mmc(bc);\r
\r
- res = RES_OK;\r
- }\r
- }\r
+ res = RES_OK;\r
+ }\r
+ }\r
\r
- release_spi();\r
+ release_spi();\r
\r
- return res;\r
+ return res;\r
}\r
\r
\r
#if _USE_WRITE\r
\r
DRESULT disk_writep (\r
- const BYTE *buff, /* Pointer to the bytes to be written (NULL:Initiate/Finalize sector write) */\r
- DWORD sa /* Number of bytes to send, Sector number (LBA) or zero */\r
-)\r
+ const BYTE *buff, /* Pointer to the bytes to be written (NULL:Initiate/Finalize sector write) */\r
+ DWORD sa /* Number of bytes to send, Sector number (LBA) or zero */\r
+ )\r
{\r
- DRESULT res;\r
- WORD bc, tmr;\r
- static WORD wc;\r
-\r
-\r
- res = RES_ERROR;\r
-\r
- if (buff) { /* Send data bytes */\r
- bc = (WORD)sa;\r
- while (bc && wc) { /* Send data bytes to the card */\r
- xmit_mmc(*buff++);\r
- wc--; bc--;\r
- }\r
- res = RES_OK;\r
- } else {\r
- if (sa) { /* Initiate sector write process */\r
- if (!(CardType & CT_BLOCK)) sa *= 512; /* Convert to byte address if needed */\r
- if (send_cmd(CMD24, sa) == 0) { /* WRITE_SINGLE_BLOCK */\r
- xmit_mmc(0xFF); xmit_mmc(0xFE); /* Data block header */\r
- wc = 512; /* Set byte counter */\r
- res = RES_OK;\r
- }\r
- } else { /* Finalize sector write process */\r
- bc = wc + 2;\r
- while (bc--) xmit_mmc(0); /* Fill left bytes and CRC with zeros */\r
- if ((rcvr_mmc() & 0x1F) == 0x05) { /* Receive data resp and wait for end of write process in timeout of 300ms */\r
- for (tmr = 10000; rcvr_mmc() != 0xFF && tmr; tmr--) /* Wait for ready (max 1000ms) */\r
- DLY_US(100);\r
- if (tmr) res = RES_OK;\r
- }\r
- release_spi();\r
- }\r
- }\r
-\r
- return res;\r
+ DRESULT res;\r
+ WORD bc, tmr;\r
+ static WORD wc;\r
+\r
+\r
+ res = RES_ERROR;\r
+\r
+ if (buff) { /* Send data bytes */\r
+ bc = (WORD)sa;\r
+ while (bc && wc) { /* Send data bytes to the card */\r
+ spi_tx(*buff++);\r
+ wc--; bc--;\r
+ }\r
+ res = RES_OK;\r
+ } else {\r
+ if (sa) { /* Initiate sector write process */\r
+ if (!(CardType & CT_BLOCK)) sa *= 512; /* Convert to byte address if needed */\r
+ if (send_cmd(CMD24, sa) == 0) { /* WRITE_SINGLE_BLOCK */\r
+ spi_tx(0xFF); spi_tx(0xFE); /* Data block header */\r
+ wc = 512; /* Set byte counter */\r
+ res = RES_OK;\r
+ }\r
+ } else { /* Finalize sector write process */\r
+ bc = wc + 2;\r
+ while (bc--) spi_tx(0); /* Fill left bytes and CRC with zeros */\r
+ if ((spi_rx() & 0x1F) == 0x05) { /* Receive data resp and wait for end of write process in timeout of 300ms */\r
+ for (tmr = 10000; spi_rx() != 0xFF && tmr; tmr--) /* Wait for ready (max 1000ms) */\r
+ DLY_US(100);\r
+ if (tmr) res = RES_OK;\r
+ }\r
+ release_spi();\r
+ }\r
+ }\r
+\r
+ return res;\r
}\r
#endif\r
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