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666 lines
18 KiB
C++
666 lines
18 KiB
C++
/* Arduino SdCard Library
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* Copyright (C) 2016 by William Greiman
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*
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* This file is part of the Arduino SdSpiCard Library
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*
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* This Library is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This Library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with the Arduino SdSpiCard Library. If not, see
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* <http://www.gnu.org/licenses/>.
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*/
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#include "SdSpiCard.h"
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// debug trace macro
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#define SD_TRACE(m, b)
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// #define SD_TRACE(m, b) Serial.print(m);Serial.println(b);
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#define SD_CS_DBG(m)
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// #define SD_CS_DBG(m) Serial.println(F(m));
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//==============================================================================
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#if USE_SD_CRC
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// CRC functions
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//------------------------------------------------------------------------------
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static uint8_t CRC7(const uint8_t* data, uint8_t n) {
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uint8_t crc = 0;
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for (uint8_t i = 0; i < n; i++) {
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uint8_t d = data[i];
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for (uint8_t j = 0; j < 8; j++) {
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crc <<= 1;
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if ((d & 0x80) ^ (crc & 0x80)) {
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crc ^= 0x09;
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}
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d <<= 1;
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}
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}
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return (crc << 1) | 1;
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}
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//------------------------------------------------------------------------------
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#if USE_SD_CRC == 1
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// Shift based CRC-CCITT
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// uses the x^16,x^12,x^5,x^1 polynomial.
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static uint16_t CRC_CCITT(const uint8_t *data, size_t n) {
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uint16_t crc = 0;
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for (size_t i = 0; i < n; i++) {
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crc = (uint8_t)(crc >> 8) | (crc << 8);
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crc ^= data[i];
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crc ^= (uint8_t)(crc & 0xff) >> 4;
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crc ^= crc << 12;
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crc ^= (crc & 0xff) << 5;
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}
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return crc;
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}
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#elif USE_SD_CRC > 1 // CRC_CCITT
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//------------------------------------------------------------------------------
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// Table based CRC-CCITT
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// uses the x^16,x^12,x^5,x^1 polynomial.
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#ifdef __AVR__
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static const uint16_t crctab[] PROGMEM = {
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#else // __AVR__
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static const uint16_t crctab[] = {
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#endif // __AVR__
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0x0000, 0x1021, 0x2042, 0x3063, 0x4084, 0x50A5, 0x60C6, 0x70E7,
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0x8108, 0x9129, 0xA14A, 0xB16B, 0xC18C, 0xD1AD, 0xE1CE, 0xF1EF,
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0x1231, 0x0210, 0x3273, 0x2252, 0x52B5, 0x4294, 0x72F7, 0x62D6,
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0x9339, 0x8318, 0xB37B, 0xA35A, 0xD3BD, 0xC39C, 0xF3FF, 0xE3DE,
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0x2462, 0x3443, 0x0420, 0x1401, 0x64E6, 0x74C7, 0x44A4, 0x5485,
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0xA56A, 0xB54B, 0x8528, 0x9509, 0xE5EE, 0xF5CF, 0xC5AC, 0xD58D,
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0x3653, 0x2672, 0x1611, 0x0630, 0x76D7, 0x66F6, 0x5695, 0x46B4,
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0xB75B, 0xA77A, 0x9719, 0x8738, 0xF7DF, 0xE7FE, 0xD79D, 0xC7BC,
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0x48C4, 0x58E5, 0x6886, 0x78A7, 0x0840, 0x1861, 0x2802, 0x3823,
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0xC9CC, 0xD9ED, 0xE98E, 0xF9AF, 0x8948, 0x9969, 0xA90A, 0xB92B,
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0x5AF5, 0x4AD4, 0x7AB7, 0x6A96, 0x1A71, 0x0A50, 0x3A33, 0x2A12,
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0xDBFD, 0xCBDC, 0xFBBF, 0xEB9E, 0x9B79, 0x8B58, 0xBB3B, 0xAB1A,
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0x6CA6, 0x7C87, 0x4CE4, 0x5CC5, 0x2C22, 0x3C03, 0x0C60, 0x1C41,
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0xEDAE, 0xFD8F, 0xCDEC, 0xDDCD, 0xAD2A, 0xBD0B, 0x8D68, 0x9D49,
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0x7E97, 0x6EB6, 0x5ED5, 0x4EF4, 0x3E13, 0x2E32, 0x1E51, 0x0E70,
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0xFF9F, 0xEFBE, 0xDFDD, 0xCFFC, 0xBF1B, 0xAF3A, 0x9F59, 0x8F78,
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0x9188, 0x81A9, 0xB1CA, 0xA1EB, 0xD10C, 0xC12D, 0xF14E, 0xE16F,
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0x1080, 0x00A1, 0x30C2, 0x20E3, 0x5004, 0x4025, 0x7046, 0x6067,
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0x83B9, 0x9398, 0xA3FB, 0xB3DA, 0xC33D, 0xD31C, 0xE37F, 0xF35E,
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0x02B1, 0x1290, 0x22F3, 0x32D2, 0x4235, 0x5214, 0x6277, 0x7256,
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0xB5EA, 0xA5CB, 0x95A8, 0x8589, 0xF56E, 0xE54F, 0xD52C, 0xC50D,
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0x34E2, 0x24C3, 0x14A0, 0x0481, 0x7466, 0x6447, 0x5424, 0x4405,
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0xA7DB, 0xB7FA, 0x8799, 0x97B8, 0xE75F, 0xF77E, 0xC71D, 0xD73C,
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0x26D3, 0x36F2, 0x0691, 0x16B0, 0x6657, 0x7676, 0x4615, 0x5634,
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0xD94C, 0xC96D, 0xF90E, 0xE92F, 0x99C8, 0x89E9, 0xB98A, 0xA9AB,
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0x5844, 0x4865, 0x7806, 0x6827, 0x18C0, 0x08E1, 0x3882, 0x28A3,
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0xCB7D, 0xDB5C, 0xEB3F, 0xFB1E, 0x8BF9, 0x9BD8, 0xABBB, 0xBB9A,
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0x4A75, 0x5A54, 0x6A37, 0x7A16, 0x0AF1, 0x1AD0, 0x2AB3, 0x3A92,
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0xFD2E, 0xED0F, 0xDD6C, 0xCD4D, 0xBDAA, 0xAD8B, 0x9DE8, 0x8DC9,
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0x7C26, 0x6C07, 0x5C64, 0x4C45, 0x3CA2, 0x2C83, 0x1CE0, 0x0CC1,
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0xEF1F, 0xFF3E, 0xCF5D, 0xDF7C, 0xAF9B, 0xBFBA, 0x8FD9, 0x9FF8,
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0x6E17, 0x7E36, 0x4E55, 0x5E74, 0x2E93, 0x3EB2, 0x0ED1, 0x1EF0
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};
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static uint16_t CRC_CCITT(const uint8_t* data, size_t n) {
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uint16_t crc = 0;
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for (size_t i = 0; i < n; i++) {
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#ifdef __AVR__
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crc = pgm_read_word(&crctab[(crc >> 8 ^ data[i]) & 0XFF]) ^ (crc << 8);
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#else // __AVR__
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crc = crctab[(crc >> 8 ^ data[i]) & 0XFF] ^ (crc << 8);
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#endif // __AVR__
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}
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return crc;
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}
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#endif // CRC_CCITT
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#endif // USE_SD_CRC
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//==============================================================================
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// SdSpiCard member functions
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//------------------------------------------------------------------------------
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bool SdSpiCard::begin(SdSpiDriver* spi, uint8_t csPin, SPISettings settings) {
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m_spiActive = false;
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m_errorCode = SD_CARD_ERROR_NONE;
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m_type = 0;
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m_spiDriver = spi;
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uint16_t t0 = curTimeMS();
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uint32_t arg;
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m_spiDriver->begin(csPin);
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m_spiDriver->setSpiSettings(SD_SCK_HZ(250000));
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spiStart();
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// must supply min of 74 clock cycles with CS high.
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spiUnselect();
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for (uint8_t i = 0; i < 10; i++) {
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spiSend(0XFF);
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}
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spiSelect();
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// command to go idle in SPI mode
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while (cardCommand(CMD0, 0) != R1_IDLE_STATE) {
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if (isTimedOut(t0, SD_INIT_TIMEOUT)) {
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error(SD_CARD_ERROR_CMD0);
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goto fail;
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}
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}
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#if USE_SD_CRC
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if (cardCommand(CMD59, 1) != R1_IDLE_STATE) {
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error(SD_CARD_ERROR_CMD59);
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goto fail;
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}
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#endif // USE_SD_CRC
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// check SD version
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while (1) {
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if (cardCommand(CMD8, 0x1AA) == (R1_ILLEGAL_COMMAND | R1_IDLE_STATE)) {
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type(SD_CARD_TYPE_SD1);
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break;
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}
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for (uint8_t i = 0; i < 4; i++) {
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m_status = spiReceive();
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}
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if (m_status == 0XAA) {
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type(SD_CARD_TYPE_SD2);
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break;
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}
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if (isTimedOut(t0, SD_INIT_TIMEOUT)) {
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error(SD_CARD_ERROR_CMD8);
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goto fail;
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}
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}
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// initialize card and send host supports SDHC if SD2
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arg = type() == SD_CARD_TYPE_SD2 ? 0X40000000 : 0;
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while (cardAcmd(ACMD41, arg) != R1_READY_STATE) {
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// check for timeout
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if (isTimedOut(t0, SD_INIT_TIMEOUT)) {
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error(SD_CARD_ERROR_ACMD41);
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goto fail;
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}
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}
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// if SD2 read OCR register to check for SDHC card
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if (type() == SD_CARD_TYPE_SD2) {
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if (cardCommand(CMD58, 0)) {
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error(SD_CARD_ERROR_CMD58);
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goto fail;
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}
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if ((spiReceive() & 0XC0) == 0XC0) {
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type(SD_CARD_TYPE_SDHC);
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}
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// Discard rest of ocr - contains allowed voltage range.
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for (uint8_t i = 0; i < 3; i++) {
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spiReceive();
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}
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}
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spiStop();
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m_spiDriver->setSpiSettings(settings);
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return true;
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fail:
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spiStop();
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return false;
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}
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//------------------------------------------------------------------------------
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// send command and return error code. Return zero for OK
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uint8_t SdSpiCard::cardCommand(uint8_t cmd, uint32_t arg) {
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// select card
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if (!m_spiActive) {
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spiStart();
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}
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// wait if busy
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waitNotBusy(SD_WRITE_TIMEOUT);
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#if USE_SD_CRC
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// form message
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uint8_t buf[6];
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buf[0] = (uint8_t)0x40U | cmd;
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buf[1] = (uint8_t)(arg >> 24U);
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buf[2] = (uint8_t)(arg >> 16U);
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buf[3] = (uint8_t)(arg >> 8U);
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buf[4] = (uint8_t)arg;
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// add CRC
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buf[5] = CRC7(buf, 5);
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// send message
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spiSend(buf, 6);
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#else // USE_SD_CRC
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// send command
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spiSend(cmd | 0x40);
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// send argument
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uint8_t *pa = reinterpret_cast<uint8_t *>(&arg);
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for (int8_t i = 3; i >= 0; i--) {
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spiSend(pa[i]);
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}
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// send CRC - correct for CMD0 with arg zero or CMD8 with arg 0X1AA
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spiSend(cmd == CMD0 ? 0X95 : 0X87);
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#endif // USE_SD_CRC
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// skip stuff byte for stop read
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if (cmd == CMD12) {
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spiReceive();
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}
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// wait for response
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for (uint8_t i = 0; ((m_status = spiReceive()) & 0X80) && i != 0XFF; i++) {
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}
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return m_status;
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}
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//------------------------------------------------------------------------------
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uint32_t SdSpiCard::cardSize() {
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csd_t csd;
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return readCSD(&csd) ? sdCardCapacity(&csd) : 0;
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}
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//------------------------------------------------------------------------------
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bool SdSpiCard::erase(uint32_t firstBlock, uint32_t lastBlock) {
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csd_t csd;
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if (!readCSD(&csd)) {
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goto fail;
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}
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// check for single block erase
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if (!csd.v1.erase_blk_en) {
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// erase size mask
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uint8_t m = (csd.v1.sector_size_high << 1) | csd.v1.sector_size_low;
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if ((firstBlock & m) != 0 || ((lastBlock + 1) & m) != 0) {
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// error card can't erase specified area
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error(SD_CARD_ERROR_ERASE_SINGLE_BLOCK);
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goto fail;
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}
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}
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if (m_type != SD_CARD_TYPE_SDHC) {
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firstBlock <<= 9;
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lastBlock <<= 9;
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}
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if (cardCommand(CMD32, firstBlock)
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|| cardCommand(CMD33, lastBlock)
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|| cardCommand(CMD38, 0)) {
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error(SD_CARD_ERROR_ERASE);
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goto fail;
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}
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if (!waitNotBusy(SD_ERASE_TIMEOUT)) {
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error(SD_CARD_ERROR_ERASE_TIMEOUT);
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goto fail;
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}
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spiStop();
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return true;
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fail:
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spiStop();
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return false;
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}
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//------------------------------------------------------------------------------
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bool SdSpiCard::eraseSingleBlockEnable() {
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csd_t csd;
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return readCSD(&csd) ? csd.v1.erase_blk_en : false;
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}
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//------------------------------------------------------------------------------
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bool SdSpiCard::isBusy() {
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bool rtn = true;
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bool spiActive = m_spiActive;
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if (!spiActive) {
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spiStart();
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}
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for (uint8_t i = 0; i < 8; i++) {
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if (0XFF == spiReceive()) {
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rtn = false;
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break;
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}
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}
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if (!spiActive) {
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spiStop();
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}
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return rtn;
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}
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//------------------------------------------------------------------------------
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bool SdSpiCard::isTimedOut(uint16_t startMS, uint16_t timeoutMS) {
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#if WDT_YIELD_TIME_MICROS
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static uint32_t last;
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if ((micros() - last) > WDT_YIELD_TIME_MICROS) {
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SysCall::yield();
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last = micros();
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}
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#endif // WDT_YIELD_TIME_MICROS
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return (curTimeMS() - startMS) > timeoutMS;
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}
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//------------------------------------------------------------------------------
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bool SdSpiCard::readBlock(uint32_t blockNumber, uint8_t* dst) {
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SD_TRACE("RB", blockNumber);
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// use address if not SDHC card
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if (type() != SD_CARD_TYPE_SDHC) {
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blockNumber <<= 9;
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}
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if (cardCommand(CMD17, blockNumber)) {
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error(SD_CARD_ERROR_CMD17);
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goto fail;
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}
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if (!readData(dst, 512)) {
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goto fail;
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}
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spiStop();
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return true;
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fail:
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spiStop();
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return false;
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}
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//------------------------------------------------------------------------------
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bool SdSpiCard::readBlocks(uint32_t block, uint8_t* dst, size_t count) {
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if (!readStart(block)) {
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return false;
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}
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for (uint16_t b = 0; b < count; b++, dst += 512) {
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if (!readData(dst, 512)) {
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return false;
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}
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}
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return readStop();
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}
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//------------------------------------------------------------------------------
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bool SdSpiCard::readData(uint8_t *dst) {
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return readData(dst, 512);
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}
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//------------------------------------------------------------------------------
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bool SdSpiCard::readData(uint8_t* dst, size_t count) {
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#if USE_SD_CRC
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uint16_t crc;
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#endif // USE_SD_CRC
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// wait for start block token
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uint16_t t0 = curTimeMS();
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while ((m_status = spiReceive()) == 0XFF) {
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if (isTimedOut(t0, SD_READ_TIMEOUT)) {
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error(SD_CARD_ERROR_READ_TIMEOUT);
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goto fail;
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}
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}
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if (m_status != DATA_START_BLOCK) {
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error(SD_CARD_ERROR_READ);
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goto fail;
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}
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// transfer data
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if ((m_status = spiReceive(dst, count))) {
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error(SD_CARD_ERROR_DMA);
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goto fail;
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}
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#if USE_SD_CRC
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// get crc
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crc = (spiReceive() << 8) | spiReceive();
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if (crc != CRC_CCITT(dst, count)) {
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error(SD_CARD_ERROR_READ_CRC);
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goto fail;
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}
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#else
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// discard crc
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spiReceive();
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spiReceive();
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#endif // USE_SD_CRC
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return true;
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fail:
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spiStop();
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return false;
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}
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//------------------------------------------------------------------------------
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bool SdSpiCard::readOCR(uint32_t* ocr) {
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uint8_t *p = reinterpret_cast<uint8_t*>(ocr);
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if (cardCommand(CMD58, 0)) {
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error(SD_CARD_ERROR_CMD58);
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goto fail;
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}
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for (uint8_t i = 0; i < 4; i++) {
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p[3 - i] = spiReceive();
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}
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spiStop();
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return true;
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fail:
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spiStop();
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return false;
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}
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//------------------------------------------------------------------------------
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/** read CID or CSR register */
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bool SdSpiCard::readRegister(uint8_t cmd, void* buf) {
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uint8_t* dst = reinterpret_cast<uint8_t*>(buf);
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if (cardCommand(cmd, 0)) {
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error(SD_CARD_ERROR_READ_REG);
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goto fail;
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}
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if (!readData(dst, 16)) {
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goto fail;
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}
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spiStop();
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return true;
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fail:
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spiStop();
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return false;
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}
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//------------------------------------------------------------------------------
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bool SdSpiCard::readStart(uint32_t blockNumber) {
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SD_TRACE("RS", blockNumber);
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if (type() != SD_CARD_TYPE_SDHC) {
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blockNumber <<= 9;
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}
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if (cardCommand(CMD18, blockNumber)) {
|
|
error(SD_CARD_ERROR_CMD18);
|
|
goto fail;
|
|
}
|
|
// spiStop();
|
|
return true;
|
|
|
|
fail:
|
|
spiStop();
|
|
return false;
|
|
}
|
|
//-----------------------------------------------------------------------------
|
|
bool SdSpiCard::readStatus(uint8_t* status) {
|
|
// retrun is R2 so read extra status byte.
|
|
if (cardAcmd(ACMD13, 0) || spiReceive()) {
|
|
error(SD_CARD_ERROR_ACMD13);
|
|
goto fail;
|
|
}
|
|
if (!readData(status, 64)) {
|
|
goto fail;
|
|
}
|
|
spiStop();
|
|
return true;
|
|
|
|
fail:
|
|
spiStop();
|
|
return false;
|
|
}
|
|
//-----------------------------------------------------------------------------
|
|
void SdSpiCard::spiStart() {
|
|
if (!m_spiActive) {
|
|
spiActivate();
|
|
spiSelect();
|
|
m_spiActive = true;
|
|
}
|
|
}
|
|
//-----------------------------------------------------------------------------
|
|
void SdSpiCard::spiStop() {
|
|
if (m_spiActive) {
|
|
spiUnselect();
|
|
spiSend(0XFF);
|
|
spiDeactivate();
|
|
m_spiActive = false;
|
|
}
|
|
}
|
|
//------------------------------------------------------------------------------
|
|
bool SdSpiCard::readStop() {
|
|
if (cardCommand(CMD12, 0)) {
|
|
error(SD_CARD_ERROR_CMD12);
|
|
goto fail;
|
|
}
|
|
spiStop();
|
|
return true;
|
|
|
|
fail:
|
|
spiStop();
|
|
return false;
|
|
}
|
|
//------------------------------------------------------------------------------
|
|
// wait for card to go not busy
|
|
bool SdSpiCard::waitNotBusy(uint16_t timeoutMS) {
|
|
uint16_t t0 = curTimeMS();
|
|
#if WDT_YIELD_TIME_MICROS
|
|
// Call isTimedOut first to insure yield is called.
|
|
while (!isTimedOut(t0, timeoutMS)) {
|
|
if (spiReceive() == 0XFF) {
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
#else // WDT_YIELD_TIME_MICROS
|
|
// Check not busy first since yield is not called in isTimedOut.
|
|
while (spiReceive() != 0XFF) {
|
|
if (isTimedOut(t0, timeoutMS)) {
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
#endif // WDT_YIELD_TIME_MICROS
|
|
}
|
|
//------------------------------------------------------------------------------
|
|
bool SdSpiCard::writeBlock(uint32_t blockNumber, const uint8_t* src) {
|
|
SD_TRACE("WB", blockNumber);
|
|
// use address if not SDHC card
|
|
if (type() != SD_CARD_TYPE_SDHC) {
|
|
blockNumber <<= 9;
|
|
}
|
|
if (cardCommand(CMD24, blockNumber)) {
|
|
error(SD_CARD_ERROR_CMD24);
|
|
goto fail;
|
|
}
|
|
if (!writeData(DATA_START_BLOCK, src)) {
|
|
goto fail;
|
|
}
|
|
|
|
#define CHECK_PROGRAMMING 0
|
|
#if CHECK_PROGRAMMING
|
|
// wait for flash programming to complete
|
|
if (!waitNotBusy(SD_WRITE_TIMEOUT)) {
|
|
error(SD_CARD_ERROR_WRITE_TIMEOUT);
|
|
goto fail;
|
|
}
|
|
// response is r2 so get and check two bytes for nonzero
|
|
if (cardCommand(CMD13, 0) || spiReceive()) {
|
|
error(SD_CARD_ERROR_CMD13);
|
|
goto fail;
|
|
}
|
|
#endif // CHECK_PROGRAMMING
|
|
|
|
spiStop();
|
|
return true;
|
|
|
|
fail:
|
|
spiStop();
|
|
return false;
|
|
}
|
|
//------------------------------------------------------------------------------
|
|
bool SdSpiCard::writeBlocks(uint32_t block, const uint8_t* src, size_t count) {
|
|
if (!writeStart(block)) {
|
|
goto fail;
|
|
}
|
|
for (size_t b = 0; b < count; b++, src += 512) {
|
|
if (!writeData(src)) {
|
|
goto fail;
|
|
}
|
|
}
|
|
return writeStop();
|
|
|
|
fail:
|
|
spiStop();
|
|
return false;
|
|
}
|
|
//------------------------------------------------------------------------------
|
|
bool SdSpiCard::writeData(const uint8_t* src) {
|
|
// wait for previous write to finish
|
|
if (!waitNotBusy(SD_WRITE_TIMEOUT)) {
|
|
error(SD_CARD_ERROR_WRITE_TIMEOUT);
|
|
goto fail;
|
|
}
|
|
if (!writeData(WRITE_MULTIPLE_TOKEN, src)) {
|
|
goto fail;
|
|
}
|
|
return true;
|
|
|
|
fail:
|
|
spiStop();
|
|
return false;
|
|
}
|
|
//------------------------------------------------------------------------------
|
|
// send one block of data for write block or write multiple blocks
|
|
bool SdSpiCard::writeData(uint8_t token, const uint8_t* src) {
|
|
#if USE_SD_CRC
|
|
uint16_t crc = CRC_CCITT(src, 512);
|
|
#else // USE_SD_CRC
|
|
uint16_t crc = 0XFFFF;
|
|
#endif // USE_SD_CRC
|
|
spiSend(token);
|
|
spiSend(src, 512);
|
|
spiSend(crc >> 8);
|
|
spiSend(crc & 0XFF);
|
|
|
|
m_status = spiReceive();
|
|
if ((m_status & DATA_RES_MASK) != DATA_RES_ACCEPTED) {
|
|
error(SD_CARD_ERROR_WRITE);
|
|
goto fail;
|
|
}
|
|
return true;
|
|
|
|
fail:
|
|
spiStop();
|
|
return false;
|
|
}
|
|
//------------------------------------------------------------------------------
|
|
bool SdSpiCard::writeStart(uint32_t blockNumber) {
|
|
// use address if not SDHC card
|
|
if (type() != SD_CARD_TYPE_SDHC) {
|
|
blockNumber <<= 9;
|
|
}
|
|
if (cardCommand(CMD25, blockNumber)) {
|
|
error(SD_CARD_ERROR_CMD25);
|
|
goto fail;
|
|
}
|
|
return true;
|
|
|
|
fail:
|
|
spiStop();
|
|
return false;
|
|
}
|
|
//------------------------------------------------------------------------------
|
|
bool SdSpiCard::writeStart(uint32_t blockNumber, uint32_t eraseCount) {
|
|
SD_TRACE("WS", blockNumber);
|
|
// send pre-erase count
|
|
if (cardAcmd(ACMD23, eraseCount)) {
|
|
error(SD_CARD_ERROR_ACMD23);
|
|
goto fail;
|
|
}
|
|
// use address if not SDHC card
|
|
if (type() != SD_CARD_TYPE_SDHC) {
|
|
blockNumber <<= 9;
|
|
}
|
|
if (cardCommand(CMD25, blockNumber)) {
|
|
error(SD_CARD_ERROR_CMD25);
|
|
goto fail;
|
|
}
|
|
return true;
|
|
|
|
fail:
|
|
spiStop();
|
|
return false;
|
|
}
|
|
//------------------------------------------------------------------------------
|
|
bool SdSpiCard::writeStop() {
|
|
if (!waitNotBusy(SD_WRITE_TIMEOUT)) {
|
|
goto fail;
|
|
}
|
|
spiSend(STOP_TRAN_TOKEN);
|
|
spiStop();
|
|
return true;
|
|
|
|
fail:
|
|
error(SD_CARD_ERROR_STOP_TRAN);
|
|
spiStop();
|
|
return false;
|
|
}
|