My Marlin configs for Fabrikator Mini and CTC i3 Pro B
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Sd2Card.cpp 19KB

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  1. /* Arduino Sd2Card Library
  2. * Copyright (C) 2009 by William Greiman
  3. *
  4. * This file is part of the Arduino Sd2Card Library
  5. *
  6. * This Library 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 3 of the License, or
  9. * (at your option) any later version.
  10. *
  11. * This Library 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.
  15. *
  16. * You should have received a copy of the GNU General Public License
  17. * along with the Arduino Sd2Card Library. If not, see
  18. * <http://www.gnu.org/licenses/>.
  19. */
  20. #include "Marlin.h"
  21. #include "Sd2Card.h"
  22. //------------------------------------------------------------------------------
  23. #ifndef SOFTWARE_SPI
  24. // functions for hardware SPI
  25. //------------------------------------------------------------------------------
  26. // make sure SPCR rate is in expected bits
  27. #if (SPR0 != 0 || SPR1 != 1)
  28. #error unexpected SPCR bits
  29. #endif
  30. /**
  31. * Initialize hardware SPI
  32. * Set SCK rate to F_CPU/pow(2, 1 + spiRate) for spiRate [0,6]
  33. */
  34. static void spiInit(uint8_t spiRate) {
  35. // See avr processor documentation
  36. SPCR = (1 << SPE) | (1 << MSTR) | (spiRate >> 1);
  37. SPSR = spiRate & 1 || spiRate == 6 ? 0 : 1 << SPI2X;
  38. }
  39. //------------------------------------------------------------------------------
  40. /** SPI receive a byte */
  41. static uint8_t spiRec() {
  42. SPDR = 0XFF;
  43. while (!(SPSR & (1 << SPIF)));
  44. return SPDR;
  45. }
  46. //------------------------------------------------------------------------------
  47. /** SPI read data - only one call so force inline */
  48. static inline __attribute__((always_inline))
  49. void spiRead(uint8_t* buf, uint16_t nbyte) {
  50. if (nbyte-- == 0) return;
  51. SPDR = 0XFF;
  52. for (uint16_t i = 0; i < nbyte; i++) {
  53. while (!(SPSR & (1 << SPIF)));
  54. buf[i] = SPDR;
  55. SPDR = 0XFF;
  56. }
  57. while (!(SPSR & (1 << SPIF)));
  58. buf[nbyte] = SPDR;
  59. }
  60. //------------------------------------------------------------------------------
  61. /** SPI send a byte */
  62. static void spiSend(uint8_t b) {
  63. SPDR = b;
  64. while (!(SPSR & (1 << SPIF)));
  65. }
  66. //------------------------------------------------------------------------------
  67. /** SPI send block - only one call so force inline */
  68. static inline __attribute__((always_inline))
  69. void spiSendBlock(uint8_t token, const uint8_t* buf) {
  70. SPDR = token;
  71. for (uint16_t i = 0; i < 512; i += 2) {
  72. while (!(SPSR & (1 << SPIF)));
  73. SPDR = buf[i];
  74. while (!(SPSR & (1 << SPIF)));
  75. SPDR = buf[i + 1];
  76. }
  77. while (!(SPSR & (1 << SPIF)));
  78. }
  79. //------------------------------------------------------------------------------
  80. #else // SOFTWARE_SPI
  81. //------------------------------------------------------------------------------
  82. /** nop to tune soft SPI timing */
  83. #define nop asm volatile ("nop\n\t")
  84. //------------------------------------------------------------------------------
  85. /** Soft SPI receive byte */
  86. static uint8_t spiRec() {
  87. uint8_t data = 0;
  88. // no interrupts during byte receive - about 8 us
  89. cli();
  90. // output pin high - like sending 0XFF
  91. fastDigitalWrite(SPI_MOSI_PIN, HIGH);
  92. for (uint8_t i = 0; i < 8; i++) {
  93. fastDigitalWrite(SPI_SCK_PIN, HIGH);
  94. // adjust so SCK is nice
  95. nop;
  96. nop;
  97. data <<= 1;
  98. if (fastDigitalRead(SPI_MISO_PIN)) data |= 1;
  99. fastDigitalWrite(SPI_SCK_PIN, LOW);
  100. }
  101. // enable interrupts
  102. sei();
  103. return data;
  104. }
  105. //------------------------------------------------------------------------------
  106. /** Soft SPI read data */
  107. static void spiRead(uint8_t* buf, uint16_t nbyte) {
  108. for (uint16_t i = 0; i < nbyte; i++) {
  109. buf[i] = spiRec();
  110. }
  111. }
  112. //------------------------------------------------------------------------------
  113. /** Soft SPI send byte */
  114. static void spiSend(uint8_t data) {
  115. // no interrupts during byte send - about 8 us
  116. cli();
  117. for (uint8_t i = 0; i < 8; i++) {
  118. fastDigitalWrite(SPI_SCK_PIN, LOW);
  119. fastDigitalWrite(SPI_MOSI_PIN, data & 0X80);
  120. data <<= 1;
  121. fastDigitalWrite(SPI_SCK_PIN, HIGH);
  122. }
  123. // hold SCK high for a few ns
  124. nop;
  125. nop;
  126. nop;
  127. nop;
  128. fastDigitalWrite(SPI_SCK_PIN, LOW);
  129. // enable interrupts
  130. sei();
  131. }
  132. //------------------------------------------------------------------------------
  133. /** Soft SPI send block */
  134. void spiSendBlock(uint8_t token, const uint8_t* buf) {
  135. spiSend(token);
  136. for (uint16_t i = 0; i < 512; i++) {
  137. spiSend(buf[i]);
  138. }
  139. }
  140. #endif // SOFTWARE_SPI
  141. //------------------------------------------------------------------------------
  142. // send command and return error code. Return zero for OK
  143. uint8_t Sd2Card::cardCommand(uint8_t cmd, uint32_t arg) {
  144. // select card
  145. chipSelectLow();
  146. // wait up to 300 ms if busy
  147. waitNotBusy(300);
  148. // send command
  149. spiSend(cmd | 0x40);
  150. // send argument
  151. for (int8_t s = 24; s >= 0; s -= 8) spiSend(arg >> s);
  152. // send CRC
  153. uint8_t crc = 0XFF;
  154. if (cmd == CMD0) crc = 0X95; // correct crc for CMD0 with arg 0
  155. if (cmd == CMD8) crc = 0X87; // correct crc for CMD8 with arg 0X1AA
  156. spiSend(crc);
  157. // skip stuff byte for stop read
  158. if (cmd == CMD12) spiRec();
  159. // wait for response
  160. for (uint8_t i = 0; ((status_ = spiRec()) & 0X80) && i != 0XFF; i++);
  161. return status_;
  162. }
  163. //------------------------------------------------------------------------------
  164. /**
  165. * Determine the size of an SD flash memory card.
  166. *
  167. * \return The number of 512 byte data blocks in the card
  168. * or zero if an error occurs.
  169. */
  170. uint32_t Sd2Card::cardSize() {
  171. csd_t csd;
  172. if (!readCSD(&csd)) return 0;
  173. if (csd.v1.csd_ver == 0) {
  174. uint8_t read_bl_len = csd.v1.read_bl_len;
  175. uint16_t c_size = (csd.v1.c_size_high << 10)
  176. | (csd.v1.c_size_mid << 2) | csd.v1.c_size_low;
  177. uint8_t c_size_mult = (csd.v1.c_size_mult_high << 1)
  178. | csd.v1.c_size_mult_low;
  179. return (uint32_t)(c_size + 1) << (c_size_mult + read_bl_len - 7);
  180. } else if (csd.v2.csd_ver == 1) {
  181. uint32_t c_size = ((uint32_t)csd.v2.c_size_high << 16)
  182. | (csd.v2.c_size_mid << 8) | csd.v2.c_size_low;
  183. return (c_size + 1) << 10;
  184. } else {
  185. error(SD_CARD_ERROR_BAD_CSD);
  186. return 0;
  187. }
  188. }
  189. //------------------------------------------------------------------------------
  190. void Sd2Card::chipSelectHigh() {
  191. digitalWrite(chipSelectPin_, HIGH);
  192. }
  193. //------------------------------------------------------------------------------
  194. void Sd2Card::chipSelectLow() {
  195. #ifndef SOFTWARE_SPI
  196. spiInit(spiRate_);
  197. #endif // SOFTWARE_SPI
  198. digitalWrite(chipSelectPin_, LOW);
  199. }
  200. //------------------------------------------------------------------------------
  201. /** Erase a range of blocks.
  202. *
  203. * \param[in] firstBlock The address of the first block in the range.
  204. * \param[in] lastBlock The address of the last block in the range.
  205. *
  206. * \note This function requests the SD card to do a flash erase for a
  207. * range of blocks. The data on the card after an erase operation is
  208. * either 0 or 1, depends on the card vendor. The card must support
  209. * single block erase.
  210. *
  211. * \return The value one, true, is returned for success and
  212. * the value zero, false, is returned for failure.
  213. */
  214. bool Sd2Card::erase(uint32_t firstBlock, uint32_t lastBlock) {
  215. csd_t csd;
  216. if (!readCSD(&csd)) goto fail;
  217. // check for single block erase
  218. if (!csd.v1.erase_blk_en) {
  219. // erase size mask
  220. uint8_t m = (csd.v1.sector_size_high << 1) | csd.v1.sector_size_low;
  221. if ((firstBlock & m) != 0 || ((lastBlock + 1) & m) != 0) {
  222. // error card can't erase specified area
  223. error(SD_CARD_ERROR_ERASE_SINGLE_BLOCK);
  224. goto fail;
  225. }
  226. }
  227. if (type_ != SD_CARD_TYPE_SDHC) {
  228. firstBlock <<= 9;
  229. lastBlock <<= 9;
  230. }
  231. if (cardCommand(CMD32, firstBlock)
  232. || cardCommand(CMD33, lastBlock)
  233. || cardCommand(CMD38, 0)) {
  234. error(SD_CARD_ERROR_ERASE);
  235. goto fail;
  236. }
  237. if (!waitNotBusy(SD_ERASE_TIMEOUT)) {
  238. error(SD_CARD_ERROR_ERASE_TIMEOUT);
  239. goto fail;
  240. }
  241. chipSelectHigh();
  242. return true;
  243. fail:
  244. chipSelectHigh();
  245. return false;
  246. }
  247. //------------------------------------------------------------------------------
  248. /** Determine if card supports single block erase.
  249. *
  250. * \return The value one, true, is returned if single block erase is supported.
  251. * The value zero, false, is returned if single block erase is not supported.
  252. */
  253. bool Sd2Card::eraseSingleBlockEnable() {
  254. csd_t csd;
  255. return readCSD(&csd) ? csd.v1.erase_blk_en : false;
  256. }
  257. //------------------------------------------------------------------------------
  258. /**
  259. * Initialize an SD flash memory card.
  260. *
  261. * \param[in] sckRateID SPI clock rate selector. See setSckRate().
  262. * \param[in] chipSelectPin SD chip select pin number.
  263. *
  264. * \return The value one, true, is returned for success and
  265. * the value zero, false, is returned for failure. The reason for failure
  266. * can be determined by calling errorCode() and errorData().
  267. */
  268. bool Sd2Card::init(uint8_t sckRateID, uint8_t chipSelectPin) {
  269. errorCode_ = type_ = 0;
  270. chipSelectPin_ = chipSelectPin;
  271. // 16-bit init start time allows over a minute
  272. uint16_t t0 = (uint16_t)millis();
  273. uint32_t arg;
  274. // set pin modes
  275. pinMode(chipSelectPin_, OUTPUT);
  276. chipSelectHigh();
  277. pinMode(SPI_MISO_PIN, INPUT);
  278. pinMode(SPI_MOSI_PIN, OUTPUT);
  279. pinMode(SPI_SCK_PIN, OUTPUT);
  280. #ifndef SOFTWARE_SPI
  281. // SS must be in output mode even it is not chip select
  282. pinMode(SS_PIN, OUTPUT);
  283. // set SS high - may be chip select for another SPI device
  284. #if SET_SPI_SS_HIGH
  285. digitalWrite(SS_PIN, HIGH);
  286. #endif // SET_SPI_SS_HIGH
  287. // set SCK rate for initialization commands
  288. spiRate_ = SPI_SD_INIT_RATE;
  289. spiInit(spiRate_);
  290. #endif // SOFTWARE_SPI
  291. // must supply min of 74 clock cycles with CS high.
  292. for (uint8_t i = 0; i < 10; i++) spiSend(0XFF);
  293. // command to go idle in SPI mode
  294. while ((status_ = cardCommand(CMD0, 0)) != R1_IDLE_STATE) {
  295. if (((uint16_t)millis() - t0) > SD_INIT_TIMEOUT) {
  296. error(SD_CARD_ERROR_CMD0);
  297. goto fail;
  298. }
  299. }
  300. // check SD version
  301. if ((cardCommand(CMD8, 0x1AA) & R1_ILLEGAL_COMMAND)) {
  302. type(SD_CARD_TYPE_SD1);
  303. } else {
  304. // only need last byte of r7 response
  305. for (uint8_t i = 0; i < 4; i++) status_ = spiRec();
  306. if (status_ != 0XAA) {
  307. error(SD_CARD_ERROR_CMD8);
  308. goto fail;
  309. }
  310. type(SD_CARD_TYPE_SD2);
  311. }
  312. // initialize card and send host supports SDHC if SD2
  313. arg = type() == SD_CARD_TYPE_SD2 ? 0X40000000 : 0;
  314. while ((status_ = cardAcmd(ACMD41, arg)) != R1_READY_STATE) {
  315. // check for timeout
  316. if (((uint16_t)millis() - t0) > SD_INIT_TIMEOUT) {
  317. error(SD_CARD_ERROR_ACMD41);
  318. goto fail;
  319. }
  320. }
  321. // if SD2 read OCR register to check for SDHC card
  322. if (type() == SD_CARD_TYPE_SD2) {
  323. if (cardCommand(CMD58, 0)) {
  324. error(SD_CARD_ERROR_CMD58);
  325. goto fail;
  326. }
  327. if ((spiRec() & 0XC0) == 0XC0) type(SD_CARD_TYPE_SDHC);
  328. // discard rest of ocr - contains allowed voltage range
  329. for (uint8_t i = 0; i < 3; i++) spiRec();
  330. }
  331. chipSelectHigh();
  332. #ifndef SOFTWARE_SPI
  333. return setSckRate(sckRateID);
  334. #else // SOFTWARE_SPI
  335. return true;
  336. #endif // SOFTWARE_SPI
  337. fail:
  338. chipSelectHigh();
  339. return false;
  340. }
  341. //------------------------------------------------------------------------------
  342. /**
  343. * Read a 512 byte block from an SD card.
  344. *
  345. * \param[in] blockNumber Logical block to be read.
  346. * \param[out] dst Pointer to the location that will receive the data.
  347. * \return The value one, true, is returned for success and
  348. * the value zero, false, is returned for failure.
  349. */
  350. bool Sd2Card::readBlock(uint32_t blockNumber, uint8_t* dst) {
  351. // use address if not SDHC card
  352. if (type()!= SD_CARD_TYPE_SDHC) blockNumber <<= 9;
  353. if (cardCommand(CMD17, blockNumber)) {
  354. error(SD_CARD_ERROR_CMD17);
  355. goto fail;
  356. }
  357. return readData(dst, 512);
  358. fail:
  359. chipSelectHigh();
  360. return false;
  361. }
  362. //------------------------------------------------------------------------------
  363. /** Read one data block in a multiple block read sequence
  364. *
  365. * \param[in] dst Pointer to the location for the data to be read.
  366. *
  367. * \return The value one, true, is returned for success and
  368. * the value zero, false, is returned for failure.
  369. */
  370. bool Sd2Card::readData(uint8_t *dst) {
  371. chipSelectLow();
  372. return readData(dst, 512);
  373. }
  374. //------------------------------------------------------------------------------
  375. bool Sd2Card::readData(uint8_t* dst, uint16_t count) {
  376. // wait for start block token
  377. uint16_t t0 = millis();
  378. while ((status_ = spiRec()) == 0XFF) {
  379. if (((uint16_t)millis() - t0) > SD_READ_TIMEOUT) {
  380. error(SD_CARD_ERROR_READ_TIMEOUT);
  381. goto fail;
  382. }
  383. }
  384. if (status_ != DATA_START_BLOCK) {
  385. error(SD_CARD_ERROR_READ);
  386. goto fail;
  387. }
  388. // transfer data
  389. spiRead(dst, count);
  390. // discard CRC
  391. spiRec();
  392. spiRec();
  393. chipSelectHigh();
  394. return true;
  395. fail:
  396. chipSelectHigh();
  397. return false;
  398. }
  399. //------------------------------------------------------------------------------
  400. /** read CID or CSR register */
  401. bool Sd2Card::readRegister(uint8_t cmd, void* buf) {
  402. uint8_t* dst = reinterpret_cast<uint8_t*>(buf);
  403. if (cardCommand(cmd, 0)) {
  404. error(SD_CARD_ERROR_READ_REG);
  405. goto fail;
  406. }
  407. return readData(dst, 16);
  408. fail:
  409. chipSelectHigh();
  410. return false;
  411. }
  412. //------------------------------------------------------------------------------
  413. /** Start a read multiple blocks sequence.
  414. *
  415. * \param[in] blockNumber Address of first block in sequence.
  416. *
  417. * \note This function is used with readData() and readStop() for optimized
  418. * multiple block reads. SPI chipSelect must be low for the entire sequence.
  419. *
  420. * \return The value one, true, is returned for success and
  421. * the value zero, false, is returned for failure.
  422. */
  423. bool Sd2Card::readStart(uint32_t blockNumber) {
  424. if (type()!= SD_CARD_TYPE_SDHC) blockNumber <<= 9;
  425. if (cardCommand(CMD18, blockNumber)) {
  426. error(SD_CARD_ERROR_CMD18);
  427. goto fail;
  428. }
  429. chipSelectHigh();
  430. return true;
  431. fail:
  432. chipSelectHigh();
  433. return false;
  434. }
  435. //------------------------------------------------------------------------------
  436. /** End a read multiple blocks sequence.
  437. *
  438. * \return The value one, true, is returned for success and
  439. * the value zero, false, is returned for failure.
  440. */
  441. bool Sd2Card::readStop() {
  442. chipSelectLow();
  443. if (cardCommand(CMD12, 0)) {
  444. error(SD_CARD_ERROR_CMD12);
  445. goto fail;
  446. }
  447. chipSelectHigh();
  448. return true;
  449. fail:
  450. chipSelectHigh();
  451. return false;
  452. }
  453. //------------------------------------------------------------------------------
  454. /**
  455. * Set the SPI clock rate.
  456. *
  457. * \param[in] sckRateID A value in the range [0, 6].
  458. *
  459. * The SPI clock will be set to F_CPU/pow(2, 1 + sckRateID). The maximum
  460. * SPI rate is F_CPU/2 for \a sckRateID = 0 and the minimum rate is F_CPU/128
  461. * for \a scsRateID = 6.
  462. *
  463. * \return The value one, true, is returned for success and the value zero,
  464. * false, is returned for an invalid value of \a sckRateID.
  465. */
  466. bool Sd2Card::setSckRate(uint8_t sckRateID) {
  467. if (sckRateID > 6) {
  468. error(SD_CARD_ERROR_SCK_RATE);
  469. return false;
  470. }
  471. spiRate_ = sckRateID;
  472. return true;
  473. }
  474. //------------------------------------------------------------------------------
  475. // wait for card to go not busy
  476. bool Sd2Card::waitNotBusy(uint16_t timeoutMillis) {
  477. uint16_t t0 = millis();
  478. while (spiRec() != 0XFF) {
  479. if (((uint16_t)millis() - t0) >= timeoutMillis) goto fail;
  480. }
  481. return true;
  482. fail:
  483. return false;
  484. }
  485. //------------------------------------------------------------------------------
  486. /**
  487. * Writes a 512 byte block to an SD card.
  488. *
  489. * \param[in] blockNumber Logical block to be written.
  490. * \param[in] src Pointer to the location of the data to be written.
  491. * \return The value one, true, is returned for success and
  492. * the value zero, false, is returned for failure.
  493. */
  494. bool Sd2Card::writeBlock(uint32_t blockNumber, const uint8_t* src) {
  495. // use address if not SDHC card
  496. if (type() != SD_CARD_TYPE_SDHC) blockNumber <<= 9;
  497. if (cardCommand(CMD24, blockNumber)) {
  498. error(SD_CARD_ERROR_CMD24);
  499. goto fail;
  500. }
  501. if (!writeData(DATA_START_BLOCK, src)) goto fail;
  502. // wait for flash programming to complete
  503. if (!waitNotBusy(SD_WRITE_TIMEOUT)) {
  504. error(SD_CARD_ERROR_WRITE_TIMEOUT);
  505. goto fail;
  506. }
  507. // response is r2 so get and check two bytes for nonzero
  508. if (cardCommand(CMD13, 0) || spiRec()) {
  509. error(SD_CARD_ERROR_WRITE_PROGRAMMING);
  510. goto fail;
  511. }
  512. chipSelectHigh();
  513. return true;
  514. fail:
  515. chipSelectHigh();
  516. return false;
  517. }
  518. //------------------------------------------------------------------------------
  519. /** Write one data block in a multiple block write sequence
  520. * \param[in] src Pointer to the location of the data to be written.
  521. * \return The value one, true, is returned for success and
  522. * the value zero, false, is returned for failure.
  523. */
  524. bool Sd2Card::writeData(const uint8_t* src) {
  525. chipSelectLow();
  526. // wait for previous write to finish
  527. if (!waitNotBusy(SD_WRITE_TIMEOUT)) goto fail;
  528. if (!writeData(WRITE_MULTIPLE_TOKEN, src)) goto fail;
  529. chipSelectHigh();
  530. return true;
  531. fail:
  532. error(SD_CARD_ERROR_WRITE_MULTIPLE);
  533. chipSelectHigh();
  534. return false;
  535. }
  536. //------------------------------------------------------------------------------
  537. // send one block of data for write block or write multiple blocks
  538. bool Sd2Card::writeData(uint8_t token, const uint8_t* src) {
  539. spiSendBlock(token, src);
  540. spiSend(0xff); // dummy crc
  541. spiSend(0xff); // dummy crc
  542. status_ = spiRec();
  543. if ((status_ & DATA_RES_MASK) != DATA_RES_ACCEPTED) {
  544. error(SD_CARD_ERROR_WRITE);
  545. goto fail;
  546. }
  547. return true;
  548. fail:
  549. chipSelectHigh();
  550. return false;
  551. }
  552. //------------------------------------------------------------------------------
  553. /** Start a write multiple blocks sequence.
  554. *
  555. * \param[in] blockNumber Address of first block in sequence.
  556. * \param[in] eraseCount The number of blocks to be pre-erased.
  557. *
  558. * \note This function is used with writeData() and writeStop()
  559. * for optimized multiple block writes.
  560. *
  561. * \return The value one, true, is returned for success and
  562. * the value zero, false, is returned for failure.
  563. */
  564. bool Sd2Card::writeStart(uint32_t blockNumber, uint32_t eraseCount) {
  565. // send pre-erase count
  566. if (cardAcmd(ACMD23, eraseCount)) {
  567. error(SD_CARD_ERROR_ACMD23);
  568. goto fail;
  569. }
  570. // use address if not SDHC card
  571. if (type() != SD_CARD_TYPE_SDHC) blockNumber <<= 9;
  572. if (cardCommand(CMD25, blockNumber)) {
  573. error(SD_CARD_ERROR_CMD25);
  574. goto fail;
  575. }
  576. chipSelectHigh();
  577. return true;
  578. fail:
  579. chipSelectHigh();
  580. return false;
  581. }
  582. //------------------------------------------------------------------------------
  583. /** End a write multiple blocks sequence.
  584. *
  585. * \return The value one, true, is returned for success and
  586. * the value zero, false, is returned for failure.
  587. */
  588. bool Sd2Card::writeStop() {
  589. chipSelectLow();
  590. if (!waitNotBusy(SD_WRITE_TIMEOUT)) goto fail;
  591. spiSend(STOP_TRAN_TOKEN);
  592. if (!waitNotBusy(SD_WRITE_TIMEOUT)) goto fail;
  593. chipSelectHigh();
  594. return true;
  595. fail:
  596. error(SD_CARD_ERROR_STOP_TRAN);
  597. chipSelectHigh();
  598. return false;
  599. }