4 * This file is part of BeRTOS.
6 * Bertos is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
20 * As a special exception, you may use this file as part of a free software
21 * library without restriction. Specifically, if other files instantiate
22 * templates or use macros or inline functions from this file, or you compile
23 * this file and link it with other files to produce an executable, this
24 * file does not by itself cause the resulting executable to be covered by
25 * the GNU General Public License. This exception does not however
26 * invalidate any other reasons why the executable file might be covered by
27 * the GNU General Public License.
29 * Copyright 2011 Develer S.r.l. (http://www.develer.com/)
32 * \brief Function library for secure digital memory.
34 * \author Daniele Basile <asterix@develer.com>
39 #include "cfg/cfg_sd.h"
42 #include <drv/timer.h>
43 #include <drv/hsmci_sam3.h>
46 #include <io/kblock.h>
50 #define LOG_LEVEL SD_LOG_LEVEL
51 #define LOG_FORMAT SD_LOG_FORMAT
53 #include <cpu/power.h>
55 #include <string.h> /* memset */
58 #define SD_SEND_ALL_CID BV(0)
59 #define SD_STATUS_APP_CMD BV(5)
60 #define SD_STATUS_READY BV(8)
61 #define SD_CARD_IS_LOCKED BV(25)
63 #define SD_OCR_CCS BV(30) /**< SD Card Capacity Status (CCS) */
64 #define SD_OCR_BUSY BV(31) /**< SD/MMC Card power up status bit (busy) */
66 #define SD_OCR_VDD_27_28 BV(15)
67 #define SD_OCR_VDD_28_29 BV(16)
68 #define SD_OCR_VDD_29_30 BV(17)
69 #define SD_OCR_VDD_30_31 BV(18)
70 #define SD_OCR_VDD_31_32 BV(19)
71 #define SD_OCR_VDD_32_33 BV(20)
74 #define SD_HOST_VOLTAGE_RANGE (SD_OCR_VDD_27_28 | \
82 #define CMD8_V_RANGE_CHECK_PAT 0xAA
83 #define CMD8_V_RANGE_27V_36V (0x100 | CMD8_V_RANGE_CHECK_PAT)
84 #define CMD8_V_RANGE_LOW (0x1000 | CMD8_V_RANGE_CHECK_PAT)
85 #define CMD8_V_ECHO_REPLY 0xFF
86 #define CMD8_SUPP_V_RANGE_REPLY 0xFF00
88 #define SD_STATUS_ERROR BV(19)
90 #define SD_GET_ERRORS(status) ((status) & 0xFFF80000)
91 #define SD_ADDR_TO_RCA(addr) (uint32_t)(((addr) << 16) & 0xFFFF0000)
92 #define SD_GET_STATE(status) (uint8_t)(((status) & 0x1E00) >> 9)
94 static const uint32_t tran_exp[] =
96 10000, 100000, 1000000, 10000000,
100 static const uint8_t tran_mant[] =
102 0, 10, 12, 13, 15, 20, 25, 30,
103 35, 40, 45, 50, 55, 60, 70, 80,
107 void sd_dumpCsd(SdCSD *csd);
108 void sd_dumpCid(SdCID *cid);
109 void sd_dumpSsr(SdSSR *ssr);
111 void sd_sendInit(void);
112 void sd_goIdle(void);
113 int sd_sendIfCond(Sd *sd);
114 int sd_sendAppOpCond(Sd *sd);
116 int sd_getCid(Sd *sd, SdCID *cid, uint32_t addr, uint8_t flag);
117 int sd_getCsd(Sd *sd, SdCSD *csd);
118 int sd_getSrc(Sd *sd);
120 int sd_appStatus(Sd *sd);
121 int sd_getRelativeAddr(Sd *sd);
122 int sd_getStatus(Sd *sd, SdSSR *ssr, uint32_t *buf, size_t words);
124 int sd_selectCard(Sd *sd);
125 int sd_deSelectCard(Sd *sd);
126 int sd_setBusWidth(Sd *sd, size_t len);
127 int sd_set_BlockLen(Sd *sd, size_t len);
128 void sd_setHightSpeed(Sd *sd);
131 INLINE int sd_setBus4bit(Sd *sd)
133 return sd_setBusWidth(sd, 4);
136 INLINE int sd_setBus1bit(Sd *sd)
138 return sd_setBusWidth(sd, 1);
143 static void dump(const char *label, uint32_t *r, size_t len)
148 kprintf("\n%s [\n", label);
149 for (i = 0; i < len; i++)
156 kprintf("%08lx ", r[i]);
159 kprintf("\n] len=%d\n\n", i);
163 void sd_dumpCsd(SdCSD *csd)
167 LOG_INFO("VERSION: %d.0\n", csd->structure ? 2 : 1);
168 LOG_INFO("CARD COMMAND CLASS: %d\n", csd->ccc);
169 LOG_INFO("MAX DATA RATE: %ld\n", csd->max_data_rate);
170 LOG_INFO("WRITE BLK LEN BITS: %ld\n", csd->write_blk_bits);
171 LOG_INFO("READ BLK LEN BITS: %ld\n", csd->read_blk_bits);
172 LOG_INFO("ERASE SIZE: %ld\n", csd->erase_size);
173 LOG_INFO("BLK NUM: %ld\n", csd->block_num);
174 LOG_INFO("BLK LEN: %ld\n", csd->block_len);
175 LOG_INFO("CAPACITY %ld\n", csd->capacity);
176 LOG_INFO("FLAG Write: WP %d, W MISALIGN %d\n", csd->write_partial, csd->write_misalign);
177 LOG_INFO("FLAG Read: RP %d, R MISALIGN %d\n", csd->read_partial, csd->read_misalign);
181 void sd_dumpCid(SdCID *cid)
185 LOG_INFO("MANFID: %d\n", cid->manfid);
186 LOG_INFO("OEMID: %d\n", cid->oemid);
187 LOG_INFO("SERIAL: %ld\n", cid->serial);
188 LOG_INFO("PROD_NAME: %s\n", cid->prod_name);
189 LOG_INFO("REV: %d.%d\n", cid->m_rev, cid->l_rev);
190 LOG_INFO("OFF,Y,M: %lx, %ld %ld\n", cid->year_off, (BCD_TO_INT_32BIT(cid->year_off) / 12) + 2000,
191 (BCD_TO_INT_32BIT(cid->year_off) % 12));
194 void sd_dumpSsr(SdSSR *ssr)
198 LOG_INFO("BUS_WIDTH: %d\n", ssr->bus_width);
199 LOG_INFO("TYPE: %d\n", ssr->card_type);
200 LOG_INFO("AU_TYPE: %d\n", ssr->au_size);
201 LOG_INFO("ERASE_SIZE: %d\n", ssr->erase_size);
202 LOG_INFO("SPEED_CLASS: %d\n", ssr->speed_class);
206 static int sd_decodeCsd(SdCSD *csd, uint32_t *resp, size_t len)
212 csd->structure = UNSTUFF_BITS(resp, 126, 2);
213 csd->ccc = UNSTUFF_BITS(resp, 84, 12);
215 csd->max_data_rate = tran_exp[UNSTUFF_BITS(resp, 96, 3)] * tran_mant[UNSTUFF_BITS(resp, 99, 4)];
220 * - Version 1.01-1.10
221 * - Version 2.00/Standard Capacity
223 * - Version 2.00/High Capacity
227 if (csd->structure == 0)
229 // (C_size + 1) x 2^(C_SIZE_MUL+2)
230 csd->block_num = (1 + UNSTUFF_BITS(resp, 62, 12)) << (UNSTUFF_BITS(resp, 47, 3) + 2);
232 csd->read_blk_bits = UNSTUFF_BITS(resp, 80, 4);
233 csd->write_blk_bits = UNSTUFF_BITS(resp, 22, 4);
235 csd->block_len = 1 << csd->read_blk_bits;
236 csd->capacity = csd->block_num * csd->block_len;
238 csd->read_partial = UNSTUFF_BITS(resp, 79, 1);
239 csd->read_misalign = UNSTUFF_BITS(resp, 77, 1);
241 csd->write_misalign = UNSTUFF_BITS(resp, 78, 1);
242 csd->write_partial = UNSTUFF_BITS(resp, 21, 1);
244 if (UNSTUFF_BITS(resp, 46, 1))
248 else if(csd->write_blk_bits >= 9)
250 csd->erase_size = UNSTUFF_BITS(resp, 39, 7) + 1;
251 csd->erase_size <<= csd->write_blk_bits - 9;
256 else if (csd->structure == 1)
258 kprintf("csize %ld\n", UNSTUFF_BITS(resp, 48, 22));
259 csd->capacity = (1 + UNSTUFF_BITS(resp, 48, 22)) << 10;
261 csd->write_blk_bits = 9;
262 csd->write_partial = 0;
263 csd->write_misalign = 0;
265 csd->read_blk_bits = 9;
266 csd->read_partial = 0;
267 csd->read_misalign = 0;
270 // the block size if fixed to 512kb
271 csd->block_len = (1 << csd->write_blk_bits) << 10;
277 kprintf("Unrecognised CSD structure version %d\n", csd->structure);
284 void sd_sendInit(void)
286 hsmci_init(NULL); //TODO: REMOVE IT!
288 if (hsmci_sendCmd(0, 0, HSMCI_CMDR_SPCMD_INIT | HSMCI_CMDR_RSPTYP_NORESP))
289 LOG_ERR("INIT: %lx\n", HSMCI_SR);
295 hsmci_setSpeed(HSMCI_INIT_SPEED, false);
296 if (hsmci_sendCmd(0, 0, HSMCI_CMDR_RSPTYP_NORESP))
297 LOG_ERR("GO_IDLE: %lx\n", HSMCI_SR);
300 int sd_sendIfCond(Sd *sd)
302 if (hsmci_sendCmd(8, CMD8_V_RANGE_27V_36V, HSMCI_CMDR_RSPTYP_48_BIT))
304 LOG_ERR("IF_COND %lx\n", HSMCI_SR);
307 hsmci_readResp(&(sd->status), 1);
308 if (((sd->status) & 0xFFF) == CMD8_V_RANGE_27V_36V)
310 LOG_INFO("IF_COND: %lx\n", (sd->status));
313 LOG_ERR("IF_COND: %lx\n", (sd->status));
317 int sd_sendAppOpCond(Sd *sd)
319 if (hsmci_sendCmd(55, 0, HSMCI_CMDR_RSPTYP_48_BIT))
321 LOG_ERR("APP_CMD %lx\n", HSMCI_SR);
325 hsmci_readResp(&(sd->status), 1);
326 if ((sd->status) & (SD_STATUS_APP_CMD | SD_STATUS_READY))
328 if (hsmci_sendCmd(41, SD_HOST_VOLTAGE_RANGE | SD_OCR_CCS, HSMCI_CMDR_RSPTYP_48_BIT))// se cmd 8 va ok.
330 LOG_ERR("APP_OP_COND %lx\n", HSMCI_SR);
335 hsmci_readResp(&(sd->status), 1);
336 if ((sd->status) & SD_OCR_BUSY)
338 LOG_INFO("SD power up! Hight Capability [%d]\n", (bool)((sd->status) & SD_OCR_CCS));
348 int sd_getCid(Sd *sd, SdCID *cid, uint32_t addr, uint8_t flag)
352 memset(cid, 0, sizeof(SdCID));
354 uint8_t idx = 9; // CMD9 get cid from gived sd address (RCA)
355 if (flag & SD_SEND_ALL_CID)
359 if (hsmci_sendCmd(idx, SD_ADDR_TO_RCA(addr), HSMCI_CMDR_RSPTYP_136_BIT))
361 LOG_ERR("GET_CID %lx\n", HSMCI_SR);
367 hsmci_readResp(resp, 4);
368 LOG_INFOB(dump("CID", resp, 4););
370 cid->manfid = UNSTUFF_BITS(resp, 120, 8);
371 cid->oemid = UNSTUFF_BITS(resp, 104, 16);
372 cid->prod_name[0] = UNSTUFF_BITS(resp, 96, 8);
373 cid->prod_name[1] = UNSTUFF_BITS(resp, 88, 8);
374 cid->prod_name[2] = UNSTUFF_BITS(resp, 80, 8);
375 cid->prod_name[3] = UNSTUFF_BITS(resp, 72, 8);
376 cid->prod_name[4] = UNSTUFF_BITS(resp, 64, 8);
377 cid->m_rev = UNSTUFF_BITS(resp, 60, 4);
378 cid->l_rev = UNSTUFF_BITS(resp, 56, 4);
379 cid->serial = (uint32_t)UNSTUFF_BITS(resp, 24, 32);
380 cid->year_off = UNSTUFF_BITS(resp, 8, 12);
386 int sd_getCsd(Sd *sd, SdCSD *csd)
390 memset(csd, 0, sizeof(SdCSD));
392 LOG_INFO("Send to RCA: %lx\n", SD_ADDR_TO_RCA(sd->addr));
393 if (hsmci_sendCmd(9, SD_ADDR_TO_RCA(sd->addr), HSMCI_CMDR_RSPTYP_136_BIT))
395 LOG_ERR("GET_CSD %lx\n", HSMCI_SR);
401 hsmci_readResp(resp, 4);
402 LOG_INFOB(dump("CSD", resp, 4););
403 sd_decodeCsd(csd, resp, 4);
409 int sd_getRelativeAddr(Sd *sd)
412 if (hsmci_sendCmd(3, 0, HSMCI_CMDR_RSPTYP_48_BIT))
414 LOG_ERR("RCA: %lx\n", HSMCI_SR);
418 hsmci_readResp(&sd->addr, 1);
419 sd->addr = sd->addr >> 16;
421 LOG_INFOB(dump("RCA", &sd->addr, 1););
426 int sd_appStatus(Sd *sd)
429 LOG_INFO("Send to RCA: %lx\n", SD_ADDR_TO_RCA(sd->addr));
430 if (hsmci_sendCmd(13, SD_ADDR_TO_RCA(sd->addr), HSMCI_CMDR_RSPTYP_48_BIT))
432 LOG_ERR("STATUS: %lx\n", HSMCI_SR);
433 sd->status |= SD_STATUS_ERROR;
437 hsmci_readResp(&(sd->status), 1);
438 LOG_INFOB(dump("STATUS", &(sd->status), 1););
440 LOG_INFO("State[%d]\n", SD_GET_STATE(sd->status));
442 if (sd->status & SD_STATUS_READY)
449 INLINE int sd_cardSelection(Sd *sd, uint32_t rca)
452 LOG_INFO("Select RCA: %lx\n", rca);
453 if (hsmci_sendCmd(7, rca, HSMCI_CMDR_RSPTYP_R1B))
455 LOG_ERR("SELECT_SD: %lx\n", HSMCI_SR);
456 sd->status |= SD_STATUS_ERROR;
461 hsmci_readResp(&(sd->status), 1);
462 LOG_INFOB(dump("SELECT_SD", &(sd->status), 1););
464 LOG_INFO("State[%d]\n", SD_GET_STATE(sd->status));
466 if (sd->status & SD_STATUS_READY)
472 int sd_selectCard(Sd *sd)
475 uint32_t rca = SD_ADDR_TO_RCA(sd->addr);
476 LOG_INFO("Select RCA: %lx\n", rca);
477 if (hsmci_sendCmd(7, rca, HSMCI_CMDR_RSPTYP_R1B))
479 LOG_ERR("SELECT_SD: %lx\n", HSMCI_SR);
484 hsmci_readResp(&(sd->status), 1);
486 LOG_INFOB(dump("SELECT_SD", &(sd->status), 1););
487 LOG_INFO("State[%d]\n", SD_GET_STATE(sd->status));
489 if (sd->status & SD_STATUS_READY)
495 int sd_deSelectCard(Sd *sd)
501 rca = SD_ADDR_TO_RCA(sd->addr + 1);
503 LOG_INFO("Select RCA: %lx\n", rca);
505 if (hsmci_sendCmd(7, rca, HSMCI_CMDR_RSPTYP_NORESP))
507 LOG_ERR("DESELECT_SD: %lx\n", HSMCI_SR);
514 int sd_setBusWidth(Sd *sd, size_t len)
518 if (hsmci_sendCmd(55, SD_ADDR_TO_RCA(sd->addr), HSMCI_CMDR_RSPTYP_48_BIT))
520 LOG_ERR("APP_CMD %lx\n", HSMCI_SR);
524 hsmci_readResp(&(sd->status), 1);
525 if ((sd->status) & (SD_STATUS_APP_CMD | SD_STATUS_READY))
527 hsmci_setBusWidth(len);
533 if (hsmci_sendCmd(6, arg, HSMCI_CMDR_RSPTYP_48_BIT))
535 LOG_ERR("SET_BUS_WIDTH CMD: %lx\n", HSMCI_SR);
539 hsmci_readResp(&(sd->status), 1);
541 LOG_INFOB(dump("SET_BUS_WIDTH", &(sd->status), 1););
542 LOG_INFO("State[%d]\n", SD_GET_STATE(sd->status));
544 if (sd->status & SD_STATUS_READY)
548 LOG_ERR("SET_BUS_WIDTH REP %lx\n", (sd->status));
553 int sd_set_BlockLen(Sd *sd, size_t len)
557 if (hsmci_sendCmd(16, len, HSMCI_CMDR_RSPTYP_48_BIT))
559 LOG_ERR("SET_BLK_LEN: %lx\n", HSMCI_SR);
563 hsmci_readResp(&(sd->status), 1);
565 LOG_INFOB(dump("SET_BLK_LEN", &(sd->status), 1););
566 LOG_INFO("State[%d]\n", SD_GET_STATE(sd->status));
568 sd->b.blk_size = len;
570 if (sd->status & SD_STATUS_READY)
576 int sd_getStatus(Sd *sd, SdSSR *ssr, uint32_t *buf, size_t words)
581 // Status reply with 512bit data, so the block size in byte is 64
582 hsmci_read(buf, words, 64);
584 if (hsmci_sendCmd(55, SD_ADDR_TO_RCA(sd->addr), HSMCI_CMDR_RSPTYP_48_BIT))
586 LOG_ERR("APP_CMD %lx\n", HSMCI_SR);
590 hsmci_readResp(&(sd->status), 1);
591 if (sd->status & (SD_STATUS_APP_CMD | SD_STATUS_READY))
593 if (hsmci_sendCmd(13, 0, HSMCI_CMDR_RSPTYP_48_BIT |
594 BV(HSMCI_CMDR_TRDIR) | HSMCI_CMDR_TRCMD_START_DATA | HSMCI_CMDR_TRTYP_SINGLE))
596 LOG_ERR("STATUS CMD: %lx\n", HSMCI_SR);
600 hsmci_readResp(&(sd->status), 1);
601 LOG_INFOB(dump("STATUS", &(sd->status), 1););
602 LOG_INFO("State[%d]\n", SD_GET_STATE(sd->status));
604 if (sd->status & SD_STATUS_READY)
606 hsmci_waitTransfer();
608 LOG_INFOB(dump("STATUS", buf, words););
609 memset(ssr, 0, sizeof(SdSSR));
610 ssr->bus_width = UNSTUFF_BITS(buf, 510, 2);
611 ssr->card_type = UNSTUFF_BITS(buf, 480, 16);
612 ssr->au_size = UNSTUFF_BITS(buf, 432, 8);
613 ssr->speed_class = UNSTUFF_BITS(buf, 440, 8);
614 ssr->erase_size = UNSTUFF_BITS(buf, 408, 24);
624 void sd_setHightSpeed(Sd *sd)
627 hsmci_setSpeed(HSMCI_HIGH_SPEED, HSMCI_HS_MODE);
631 static size_t sd_SdReadDirect(struct KBlock *b, block_idx_t idx, void *buf, size_t offset, size_t size)
634 ASSERT(!((uint32_t)buf & 0x3));
637 LOG_INFO("reading from block %ld, offset %d, size %d\n", idx, offset, size);
639 if (sd_selectCard(sd) < 0)
641 sd->status |= SD_STATUS_ERROR;
645 hsmci_read(buf, size / 4, sd->b.blk_size);
647 if (hsmci_sendCmd(17, idx * sd->b.blk_size + offset, HSMCI_CMDR_RSPTYP_48_BIT |
648 BV(HSMCI_CMDR_TRDIR) | HSMCI_CMDR_TRCMD_START_DATA | HSMCI_CMDR_TRTYP_SINGLE))
650 LOG_ERR("SIGLE_BLK_READ: %lx\n", HSMCI_SR);
655 hsmci_readResp(&(sd->status), 1);
657 LOG_INFOB(dump("SIGLE_BLK_READ", &(sd->status), 1););
658 LOG_INFO("State[%d]\n", SD_GET_STATE(sd->status));
660 if (sd->status & SD_STATUS_READY)
662 hsmci_waitTransfer();
671 static size_t sd_SdWriteDirect(KBlock *b, block_idx_t idx, const void *buf, size_t offset, size_t size)
674 ASSERT(!((uint32_t)buf & 0x3));
677 const uint32_t *_buf = (const uint32_t *)buf;
678 LOG_INFO("reading from block %ld, offset %d, size %d\n", idx, offset, size);
680 if (sd_selectCard(sd) < 0)
682 sd->status |= SD_STATUS_ERROR;
686 hsmci_write(_buf, size / 4, sd->b.blk_size);
688 if (hsmci_sendCmd(24, idx * sd->b.blk_size + offset, HSMCI_CMDR_RSPTYP_48_BIT |
689 HSMCI_CMDR_TRCMD_START_DATA | HSMCI_CMDR_TRTYP_SINGLE))
691 LOG_ERR("SIGLE_BLK_WRITE: %lx\n", HSMCI_SR);
696 hsmci_readResp(&(sd->status), 1);
698 LOG_INFOB(dump("SIGLE_BLK_WR", &(sd->status), 1););
699 LOG_INFO("State[%d]\n", SD_GET_STATE(sd->status));
701 if (sd->status & SD_STATUS_READY)
703 hsmci_waitTransfer();
713 static int sd_SdError(KBlock *b)
716 return SD_GET_ERRORS(sd->status);
719 static void sd_SdClearerr(KBlock *b)
725 static bool sd_blockInit(Sd *sd, KFile *ch)
729 memset(sd, 0, sizeof(*sd));
730 DB(sd->b.priv.type = KBT_SD);
732 /* Wait a few moments for supply voltage to stabilize */
733 timer_delay(SD_START_DELAY);
740 ticks_t start = timer_clock();
741 bool sd_power_on = false;
744 if (!sd_sendAppOpCond(sd))
751 while (timer_clock() - start < SD_INIT_TIMEOUT);
757 if(sd_getCid(sd, &cid, 0, SD_SEND_ALL_CID) < 0)
764 if (sd_getRelativeAddr(sd) < 0)
768 LOG_INFO("RCA: %0lx\n", sd->addr);
772 if (sd_getCsd(sd, &csd) < 0)
776 sd->b.blk_cnt = csd.block_num * (csd.block_len / SD_DEFAULT_BLOCKLEN);
777 LOG_INFO("blk_size %d, blk_cnt %ld\n", sd->b.blk_size, sd->b.blk_cnt);
781 if (sd_appStatus(sd) < 0)
783 LOG_INFO("STATUS: %ld\n", sd->status);
787 if (sd->status & SD_CARD_IS_LOCKED)
789 LOG_INFO("SD is locked!\n");
793 if (sd->status & SD_STATUS_READY)
796 sd_set_BlockLen(sd, SD_DEFAULT_BLOCKLEN);
798 sd_setHightSpeed(sd);
801 #if CONFIG_SD_AUTOASSIGN_FAT
802 disk_assignDrive(&sd->b, 0);
808 LOG_ERR("SD not ready.\n");
812 static const KBlockVTable sd_unbuffered_vt =
814 .readDirect = sd_SdReadDirect,
815 .writeDirect = sd_SdWriteDirect,
818 .clearerr = sd_SdClearerr,
821 static const KBlockVTable sd_buffered_vt =
823 .readDirect = sd_SdReadDirect,
824 .writeDirect = sd_SdWriteDirect,
826 .readBuf = kblock_swReadBuf,
827 .writeBuf = kblock_swWriteBuf,
828 .load = kblock_swLoad,
829 .store = kblock_swStore,
832 .clearerr = sd_SdClearerr,
835 bool sd_hw_initUnbuf(Sd *sd, KFile *ch)
837 if (sd_blockInit(sd, ch))
839 sd->b.priv.vt = &sd_unbuffered_vt;
846 static uint8_t sd_buf[SD_DEFAULT_BLOCKLEN];
848 bool sd_hw_initBuf(Sd *sd, KFile *ch)
850 if (sd_blockInit(sd, ch))
852 sd->b.priv.buf = sd_buf;
853 sd->b.priv.flags |= KB_BUFFERED | KB_PARTIAL_WRITE;
854 sd->b.priv.vt = &sd_buffered_vt;
855 sd->b.priv.vt->load(&sd->b, 0);