![](/media/cache/group/JapanDisplayInc_logo.jpg.50x50_q85.jpg)
Renewal Sample code, SpeedMeter Demo with MIP8F_SPI_Ver50
Dependencies: mbed MIP8F_SPI_Ver50
Introduction
Renewal Version. Number charactors count up sample like a speed meter of a car with MIP8F_SPI_Ver50
Only for LPM027M128x (400x240) ,JDI DIsplay.
Other information , please refer to https://os.mbed.com/teams/JapanDisplayInc/code/MIP8f_FRDM_sample/
Usage
Copy Setting File and Image to micro SD-CARD. you can NOT use same sample color images of OTHER VERSION SAMPLE.
a) Download the following file corresponding to the target panel, and rename file identifier (.bin -> .zip), and unzip the file on micro SD Card's root directory.
LPM027M128x (400x240) :/media/uploads/JDI_Mbed_Team/speedmeter2-400x240.bin
\SpeedMeter2-400x240 (SD card) (X:)
|-settings2.txt
|-SpeedMeter2-400x240
|- n00021 400x240 navi_mod2.bmp
b) Insert micro SD-CARD to FRDM-K64F. c) Upload binary file to FRDM-K64F.and push Reset Button.
Other information
refer to Usage on https://os.mbed.com/teams/JapanDisplayInc/code/MIP8f_FRDM_sample/
this Sample Code (.bin)
/media/uploads/JDI_Mbed_Team/mip8f_frdm_countupnumber_sample2.k64f.bin
This sample Video
SDFileSystem/SDFileSystem.cpp@10:733bfa7cf111, 2018-11-19 (annotated)
- Committer:
- JDI_Mbed_Team
- Date:
- Mon Nov 19 04:45:11 2018 +0000
- Revision:
- 10:733bfa7cf111
- Parent:
- 0:33fe30a2b785
renewal sample code, SpeedMeter demo
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
JDI_Mbed_Team | 0:33fe30a2b785 | 1 | /* SD/MMC File System Library |
JDI_Mbed_Team | 0:33fe30a2b785 | 2 | * Copyright (c) 2016 Neil Thiessen |
JDI_Mbed_Team | 0:33fe30a2b785 | 3 | * |
JDI_Mbed_Team | 0:33fe30a2b785 | 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
JDI_Mbed_Team | 0:33fe30a2b785 | 5 | * you may not use this file except in compliance with the License. |
JDI_Mbed_Team | 0:33fe30a2b785 | 6 | * You may obtain a copy of the License at |
JDI_Mbed_Team | 0:33fe30a2b785 | 7 | * |
JDI_Mbed_Team | 0:33fe30a2b785 | 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
JDI_Mbed_Team | 0:33fe30a2b785 | 9 | * |
JDI_Mbed_Team | 0:33fe30a2b785 | 10 | * Unless required by applicable law or agreed to in writing, software |
JDI_Mbed_Team | 0:33fe30a2b785 | 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
JDI_Mbed_Team | 0:33fe30a2b785 | 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
JDI_Mbed_Team | 0:33fe30a2b785 | 13 | * See the License for the specific language governing permissions and |
JDI_Mbed_Team | 0:33fe30a2b785 | 14 | * limitations under the License. |
JDI_Mbed_Team | 0:33fe30a2b785 | 15 | */ |
JDI_Mbed_Team | 0:33fe30a2b785 | 16 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 17 | #include "SDFileSystem.h" |
JDI_Mbed_Team | 0:33fe30a2b785 | 18 | #include "diskio.h" |
JDI_Mbed_Team | 0:33fe30a2b785 | 19 | #include "pinmap.h" |
JDI_Mbed_Team | 0:33fe30a2b785 | 20 | #include "SDCRC.h" |
JDI_Mbed_Team | 0:33fe30a2b785 | 21 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 22 | SDFileSystem::SDFileSystem(PinName mosi, PinName miso, PinName sclk, PinName cs, const char* name, PinName cd, SwitchType cdtype, int hz) |
JDI_Mbed_Team | 0:33fe30a2b785 | 23 | : FATFileSystem(name), |
JDI_Mbed_Team | 0:33fe30a2b785 | 24 | m_Spi(mosi, miso, sclk), |
JDI_Mbed_Team | 0:33fe30a2b785 | 25 | m_Cs(cs, 1), |
JDI_Mbed_Team | 0:33fe30a2b785 | 26 | m_Cd(cd), |
JDI_Mbed_Team | 0:33fe30a2b785 | 27 | m_FREQ(hz) |
JDI_Mbed_Team | 0:33fe30a2b785 | 28 | { |
JDI_Mbed_Team | 0:33fe30a2b785 | 29 | //Initialize the member variables |
JDI_Mbed_Team | 0:33fe30a2b785 | 30 | m_CardType = CARD_NONE; |
JDI_Mbed_Team | 0:33fe30a2b785 | 31 | m_Crc = true; |
JDI_Mbed_Team | 0:33fe30a2b785 | 32 | m_LargeFrames = false; |
JDI_Mbed_Team | 0:33fe30a2b785 | 33 | m_WriteValidation = true; |
JDI_Mbed_Team | 0:33fe30a2b785 | 34 | m_Status = STA_NOINIT; |
JDI_Mbed_Team | 0:33fe30a2b785 | 35 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 36 | //Enable the internal pull-up resistor on MISO |
JDI_Mbed_Team | 0:33fe30a2b785 | 37 | pin_mode(miso, PullUp); |
JDI_Mbed_Team | 0:33fe30a2b785 | 38 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 39 | //Configure the SPI bus |
JDI_Mbed_Team | 0:33fe30a2b785 | 40 | m_Spi.format(8, 0); |
JDI_Mbed_Team | 0:33fe30a2b785 | 41 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 42 | //Configure the card detect pin |
JDI_Mbed_Team | 0:33fe30a2b785 | 43 | if (cdtype == SWITCH_POS_NO) { |
JDI_Mbed_Team | 0:33fe30a2b785 | 44 | m_Cd.mode(PullDown); |
JDI_Mbed_Team | 0:33fe30a2b785 | 45 | m_CdAssert = 1; |
JDI_Mbed_Team | 0:33fe30a2b785 | 46 | m_Cd.fall(this, &SDFileSystem::onCardRemoval); |
JDI_Mbed_Team | 0:33fe30a2b785 | 47 | } else if (cdtype == SWITCH_POS_NC) { |
JDI_Mbed_Team | 0:33fe30a2b785 | 48 | m_Cd.mode(PullDown); |
JDI_Mbed_Team | 0:33fe30a2b785 | 49 | m_CdAssert = 0; |
JDI_Mbed_Team | 0:33fe30a2b785 | 50 | m_Cd.rise(this, &SDFileSystem::onCardRemoval); |
JDI_Mbed_Team | 0:33fe30a2b785 | 51 | } else if (cdtype == SWITCH_NEG_NO) { |
JDI_Mbed_Team | 0:33fe30a2b785 | 52 | m_Cd.mode(PullUp); |
JDI_Mbed_Team | 0:33fe30a2b785 | 53 | m_CdAssert = 0; |
JDI_Mbed_Team | 0:33fe30a2b785 | 54 | m_Cd.rise(this, &SDFileSystem::onCardRemoval); |
JDI_Mbed_Team | 0:33fe30a2b785 | 55 | } else if (cdtype == SWITCH_NEG_NC) { |
JDI_Mbed_Team | 0:33fe30a2b785 | 56 | m_Cd.mode(PullUp); |
JDI_Mbed_Team | 0:33fe30a2b785 | 57 | m_CdAssert = 1; |
JDI_Mbed_Team | 0:33fe30a2b785 | 58 | m_Cd.fall(this, &SDFileSystem::onCardRemoval); |
JDI_Mbed_Team | 0:33fe30a2b785 | 59 | } else { |
JDI_Mbed_Team | 0:33fe30a2b785 | 60 | m_CdAssert = -1; |
JDI_Mbed_Team | 0:33fe30a2b785 | 61 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 62 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 63 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 64 | bool SDFileSystem::card_present() |
JDI_Mbed_Team | 0:33fe30a2b785 | 65 | { |
JDI_Mbed_Team | 0:33fe30a2b785 | 66 | //Check the card socket |
JDI_Mbed_Team | 0:33fe30a2b785 | 67 | checkSocket(); |
JDI_Mbed_Team | 0:33fe30a2b785 | 68 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 69 | //Return whether or not a card is present |
JDI_Mbed_Team | 0:33fe30a2b785 | 70 | return !(m_Status & STA_NODISK); |
JDI_Mbed_Team | 0:33fe30a2b785 | 71 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 72 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 73 | SDFileSystem::CardType SDFileSystem::card_type() |
JDI_Mbed_Team | 0:33fe30a2b785 | 74 | { |
JDI_Mbed_Team | 0:33fe30a2b785 | 75 | //Check the card socket |
JDI_Mbed_Team | 0:33fe30a2b785 | 76 | checkSocket(); |
JDI_Mbed_Team | 0:33fe30a2b785 | 77 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 78 | //Return the card type |
JDI_Mbed_Team | 0:33fe30a2b785 | 79 | return m_CardType; |
JDI_Mbed_Team | 0:33fe30a2b785 | 80 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 81 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 82 | bool SDFileSystem::crc() |
JDI_Mbed_Team | 0:33fe30a2b785 | 83 | { |
JDI_Mbed_Team | 0:33fe30a2b785 | 84 | //Return whether or not CRC is enabled |
JDI_Mbed_Team | 0:33fe30a2b785 | 85 | return m_Crc; |
JDI_Mbed_Team | 0:33fe30a2b785 | 86 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 87 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 88 | void SDFileSystem::crc(bool enabled) |
JDI_Mbed_Team | 0:33fe30a2b785 | 89 | { |
JDI_Mbed_Team | 0:33fe30a2b785 | 90 | //Check the card socket |
JDI_Mbed_Team | 0:33fe30a2b785 | 91 | checkSocket(); |
JDI_Mbed_Team | 0:33fe30a2b785 | 92 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 93 | //Just update the member variable if the card isn't initialized |
JDI_Mbed_Team | 0:33fe30a2b785 | 94 | if (m_Status & STA_NOINIT) { |
JDI_Mbed_Team | 0:33fe30a2b785 | 95 | m_Crc = enabled; |
JDI_Mbed_Team | 0:33fe30a2b785 | 96 | return; |
JDI_Mbed_Team | 0:33fe30a2b785 | 97 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 98 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 99 | //Enable or disable CRC |
JDI_Mbed_Team | 0:33fe30a2b785 | 100 | if (enabled && !m_Crc) { |
JDI_Mbed_Team | 0:33fe30a2b785 | 101 | //Send CMD59(0x00000001) to enable CRC |
JDI_Mbed_Team | 0:33fe30a2b785 | 102 | m_Crc = true; |
JDI_Mbed_Team | 0:33fe30a2b785 | 103 | commandTransaction(CMD59, 0x00000001); |
JDI_Mbed_Team | 0:33fe30a2b785 | 104 | } else if (!enabled && m_Crc) { |
JDI_Mbed_Team | 0:33fe30a2b785 | 105 | //Send CMD59(0x00000000) to disable CRC |
JDI_Mbed_Team | 0:33fe30a2b785 | 106 | commandTransaction(CMD59, 0x00000000); |
JDI_Mbed_Team | 0:33fe30a2b785 | 107 | m_Crc = false; |
JDI_Mbed_Team | 0:33fe30a2b785 | 108 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 109 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 110 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 111 | bool SDFileSystem::large_frames() |
JDI_Mbed_Team | 0:33fe30a2b785 | 112 | { |
JDI_Mbed_Team | 0:33fe30a2b785 | 113 | //Return whether or not 16-bit frames are enabled |
JDI_Mbed_Team | 0:33fe30a2b785 | 114 | return m_LargeFrames; |
JDI_Mbed_Team | 0:33fe30a2b785 | 115 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 116 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 117 | void SDFileSystem::large_frames(bool enabled) |
JDI_Mbed_Team | 0:33fe30a2b785 | 118 | { |
JDI_Mbed_Team | 0:33fe30a2b785 | 119 | //Set whether or not 16-bit frames are enabled |
JDI_Mbed_Team | 0:33fe30a2b785 | 120 | m_LargeFrames = enabled; |
JDI_Mbed_Team | 0:33fe30a2b785 | 121 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 122 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 123 | bool SDFileSystem::write_validation() |
JDI_Mbed_Team | 0:33fe30a2b785 | 124 | { |
JDI_Mbed_Team | 0:33fe30a2b785 | 125 | //Return whether or not write validation is enabled |
JDI_Mbed_Team | 0:33fe30a2b785 | 126 | return m_WriteValidation; |
JDI_Mbed_Team | 0:33fe30a2b785 | 127 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 128 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 129 | void SDFileSystem::write_validation(bool enabled) |
JDI_Mbed_Team | 0:33fe30a2b785 | 130 | { |
JDI_Mbed_Team | 0:33fe30a2b785 | 131 | //Set whether or not write validation is enabled |
JDI_Mbed_Team | 0:33fe30a2b785 | 132 | m_WriteValidation = enabled; |
JDI_Mbed_Team | 0:33fe30a2b785 | 133 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 134 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 135 | int SDFileSystem::unmount() |
JDI_Mbed_Team | 0:33fe30a2b785 | 136 | { |
JDI_Mbed_Team | 0:33fe30a2b785 | 137 | //Unmount the filesystem |
JDI_Mbed_Team | 0:33fe30a2b785 | 138 | FATFileSystem::unmount(); |
JDI_Mbed_Team | 0:33fe30a2b785 | 139 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 140 | //Change the status to not initialized, and the card type to unknown |
JDI_Mbed_Team | 0:33fe30a2b785 | 141 | m_Status |= STA_NOINIT; |
JDI_Mbed_Team | 0:33fe30a2b785 | 142 | m_CardType = CARD_UNKNOWN; |
JDI_Mbed_Team | 0:33fe30a2b785 | 143 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 144 | //Always succeeds |
JDI_Mbed_Team | 0:33fe30a2b785 | 145 | return 0; |
JDI_Mbed_Team | 0:33fe30a2b785 | 146 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 147 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 148 | int SDFileSystem::disk_initialize() |
JDI_Mbed_Team | 0:33fe30a2b785 | 149 | { |
JDI_Mbed_Team | 0:33fe30a2b785 | 150 | char token; |
JDI_Mbed_Team | 0:33fe30a2b785 | 151 | unsigned int resp; |
JDI_Mbed_Team | 0:33fe30a2b785 | 152 | Timer timer; |
JDI_Mbed_Team | 0:33fe30a2b785 | 153 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 154 | //Make sure there's a card in the socket before proceeding |
JDI_Mbed_Team | 0:33fe30a2b785 | 155 | checkSocket(); |
JDI_Mbed_Team | 0:33fe30a2b785 | 156 | if (m_Status & STA_NODISK) |
JDI_Mbed_Team | 0:33fe30a2b785 | 157 | return m_Status; |
JDI_Mbed_Team | 0:33fe30a2b785 | 158 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 159 | //Make sure we're not already initialized before proceeding |
JDI_Mbed_Team | 0:33fe30a2b785 | 160 | if (!(m_Status & STA_NOINIT)) |
JDI_Mbed_Team | 0:33fe30a2b785 | 161 | return m_Status; |
JDI_Mbed_Team | 0:33fe30a2b785 | 162 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 163 | //Set the SPI frequency to 400kHz for initialization |
JDI_Mbed_Team | 0:33fe30a2b785 | 164 | m_Spi.frequency(400000); |
JDI_Mbed_Team | 0:33fe30a2b785 | 165 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 166 | //Try to reset the card up to 3 times |
JDI_Mbed_Team | 0:33fe30a2b785 | 167 | for (int f = 0; f < 3; f++) { |
JDI_Mbed_Team | 0:33fe30a2b785 | 168 | //Send 80 dummy clocks with /CS deasserted and DI held high |
JDI_Mbed_Team | 0:33fe30a2b785 | 169 | m_Cs = 1; |
JDI_Mbed_Team | 0:33fe30a2b785 | 170 | for (int i = 0; i < 10; i++) { |
JDI_Mbed_Team | 0:33fe30a2b785 | 171 | m_Spi.write(0xFF); |
JDI_Mbed_Team | 0:33fe30a2b785 | 172 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 173 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 174 | //Send CMD0(0x00000000) to reset the card |
JDI_Mbed_Team | 0:33fe30a2b785 | 175 | token = commandTransaction(CMD0, 0x00000000); |
JDI_Mbed_Team | 0:33fe30a2b785 | 176 | if (token == 0x01) { |
JDI_Mbed_Team | 0:33fe30a2b785 | 177 | break; |
JDI_Mbed_Team | 0:33fe30a2b785 | 178 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 179 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 180 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 181 | //Check if the card reset |
JDI_Mbed_Team | 0:33fe30a2b785 | 182 | if (token != 0x01) { |
JDI_Mbed_Team | 0:33fe30a2b785 | 183 | //Initialization failed |
JDI_Mbed_Team | 0:33fe30a2b785 | 184 | m_CardType = CARD_UNKNOWN; |
JDI_Mbed_Team | 0:33fe30a2b785 | 185 | return m_Status; |
JDI_Mbed_Team | 0:33fe30a2b785 | 186 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 187 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 188 | //Send CMD59(0x00000001) to enable CRC if necessary |
JDI_Mbed_Team | 0:33fe30a2b785 | 189 | if (m_Crc) { |
JDI_Mbed_Team | 0:33fe30a2b785 | 190 | if (commandTransaction(CMD59, 0x00000001) != 0x01) { |
JDI_Mbed_Team | 0:33fe30a2b785 | 191 | //Initialization failed |
JDI_Mbed_Team | 0:33fe30a2b785 | 192 | m_CardType = CARD_UNKNOWN; |
JDI_Mbed_Team | 0:33fe30a2b785 | 193 | return m_Status; |
JDI_Mbed_Team | 0:33fe30a2b785 | 194 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 195 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 196 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 197 | //Send CMD8(0x000001AA) to see if this is an SDCv2 card |
JDI_Mbed_Team | 0:33fe30a2b785 | 198 | if (commandTransaction(CMD8, 0x000001AA, &resp) == 0x01) { |
JDI_Mbed_Team | 0:33fe30a2b785 | 199 | //This is an SDCv2 card, get the 32-bit return value and verify the voltage range/check pattern |
JDI_Mbed_Team | 0:33fe30a2b785 | 200 | if ((resp & 0xFFF) != 0x1AA) { |
JDI_Mbed_Team | 0:33fe30a2b785 | 201 | //Initialization failed |
JDI_Mbed_Team | 0:33fe30a2b785 | 202 | m_CardType = CARD_UNKNOWN; |
JDI_Mbed_Team | 0:33fe30a2b785 | 203 | return m_Status; |
JDI_Mbed_Team | 0:33fe30a2b785 | 204 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 205 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 206 | //Send CMD58(0x00000000) to read the OCR, and verify that the card supports 3.2-3.3V |
JDI_Mbed_Team | 0:33fe30a2b785 | 207 | if (commandTransaction(CMD58, 0x00000000, &resp) != 0x01 || !(resp & (1 << 20))) { |
JDI_Mbed_Team | 0:33fe30a2b785 | 208 | //Initialization failed |
JDI_Mbed_Team | 0:33fe30a2b785 | 209 | m_CardType = CARD_UNKNOWN; |
JDI_Mbed_Team | 0:33fe30a2b785 | 210 | return m_Status; |
JDI_Mbed_Team | 0:33fe30a2b785 | 211 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 212 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 213 | //Try to initialize the card using ACMD41(0x40100000) for up to 2 seconds |
JDI_Mbed_Team | 0:33fe30a2b785 | 214 | timer.start(); |
JDI_Mbed_Team | 0:33fe30a2b785 | 215 | do { |
JDI_Mbed_Team | 0:33fe30a2b785 | 216 | token = commandTransaction(ACMD41, 0x40100000); |
JDI_Mbed_Team | 0:33fe30a2b785 | 217 | } while (token == 0x01 && timer.read_ms() < 2000); |
JDI_Mbed_Team | 0:33fe30a2b785 | 218 | timer.stop(); |
JDI_Mbed_Team | 0:33fe30a2b785 | 219 | timer.reset(); |
JDI_Mbed_Team | 0:33fe30a2b785 | 220 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 221 | //Check if the card initialized |
JDI_Mbed_Team | 0:33fe30a2b785 | 222 | if (token != 0x00) { |
JDI_Mbed_Team | 0:33fe30a2b785 | 223 | //Initialization failed |
JDI_Mbed_Team | 0:33fe30a2b785 | 224 | m_CardType = CARD_UNKNOWN; |
JDI_Mbed_Team | 0:33fe30a2b785 | 225 | return m_Status; |
JDI_Mbed_Team | 0:33fe30a2b785 | 226 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 227 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 228 | //Send CMD58(0x00000000) to read the OCR |
JDI_Mbed_Team | 0:33fe30a2b785 | 229 | if (commandTransaction(CMD58, 0x00000000, &resp) == 0x00) { |
JDI_Mbed_Team | 0:33fe30a2b785 | 230 | //Check the CCS bit to determine if this is a high capacity card |
JDI_Mbed_Team | 0:33fe30a2b785 | 231 | if (resp & (1 << 30)) |
JDI_Mbed_Team | 0:33fe30a2b785 | 232 | m_CardType = CARD_SDHC; |
JDI_Mbed_Team | 0:33fe30a2b785 | 233 | else |
JDI_Mbed_Team | 0:33fe30a2b785 | 234 | m_CardType = CARD_SD; |
JDI_Mbed_Team | 0:33fe30a2b785 | 235 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 236 | //Increase the SPI frequency to full speed (up to 50MHz for SDCv2) |
JDI_Mbed_Team | 0:33fe30a2b785 | 237 | if (m_FREQ > 25000000) { |
JDI_Mbed_Team | 0:33fe30a2b785 | 238 | if (enableHighSpeedMode()) { |
JDI_Mbed_Team | 0:33fe30a2b785 | 239 | if (m_FREQ > 50000000) { |
JDI_Mbed_Team | 0:33fe30a2b785 | 240 | m_Spi.frequency(50000000); |
JDI_Mbed_Team | 0:33fe30a2b785 | 241 | } else { |
JDI_Mbed_Team | 0:33fe30a2b785 | 242 | m_Spi.frequency(m_FREQ); |
JDI_Mbed_Team | 0:33fe30a2b785 | 243 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 244 | } else { |
JDI_Mbed_Team | 0:33fe30a2b785 | 245 | m_Spi.frequency(25000000); |
JDI_Mbed_Team | 0:33fe30a2b785 | 246 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 247 | } else { |
JDI_Mbed_Team | 0:33fe30a2b785 | 248 | m_Spi.frequency(m_FREQ); |
JDI_Mbed_Team | 0:33fe30a2b785 | 249 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 250 | } else { |
JDI_Mbed_Team | 0:33fe30a2b785 | 251 | //Initialization failed |
JDI_Mbed_Team | 0:33fe30a2b785 | 252 | m_CardType = CARD_UNKNOWN; |
JDI_Mbed_Team | 0:33fe30a2b785 | 253 | return m_Status; |
JDI_Mbed_Team | 0:33fe30a2b785 | 254 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 255 | } else { |
JDI_Mbed_Team | 0:33fe30a2b785 | 256 | //Didn't respond or illegal command, this is either an SDCv1 or MMC card |
JDI_Mbed_Team | 0:33fe30a2b785 | 257 | //Send CMD58(0x00000000) to read the OCR, and verify that the card supports 3.2-3.3V |
JDI_Mbed_Team | 0:33fe30a2b785 | 258 | if (commandTransaction(CMD58, 0x00000000, &resp) != 0x01 || !(resp & (1 << 20))) { |
JDI_Mbed_Team | 0:33fe30a2b785 | 259 | //Initialization failed |
JDI_Mbed_Team | 0:33fe30a2b785 | 260 | m_CardType = CARD_UNKNOWN; |
JDI_Mbed_Team | 0:33fe30a2b785 | 261 | return m_Status; |
JDI_Mbed_Team | 0:33fe30a2b785 | 262 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 263 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 264 | //Try to initialize the card using ACMD41(0x40100000) for up to 2 seconds |
JDI_Mbed_Team | 0:33fe30a2b785 | 265 | timer.start(); |
JDI_Mbed_Team | 0:33fe30a2b785 | 266 | do { |
JDI_Mbed_Team | 0:33fe30a2b785 | 267 | token = commandTransaction(ACMD41, 0x40100000); |
JDI_Mbed_Team | 0:33fe30a2b785 | 268 | } while (token == 0x01 && timer.read_ms() < 2000); |
JDI_Mbed_Team | 0:33fe30a2b785 | 269 | timer.stop(); |
JDI_Mbed_Team | 0:33fe30a2b785 | 270 | timer.reset(); |
JDI_Mbed_Team | 0:33fe30a2b785 | 271 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 272 | //Check if the card initialized |
JDI_Mbed_Team | 0:33fe30a2b785 | 273 | if (token == 0x00) { |
JDI_Mbed_Team | 0:33fe30a2b785 | 274 | //This is an SDCv1 standard capacity card |
JDI_Mbed_Team | 0:33fe30a2b785 | 275 | m_CardType = CARD_SD; |
JDI_Mbed_Team | 0:33fe30a2b785 | 276 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 277 | //Increase the SPI frequency to full speed (up to 25MHz for SDCv1) |
JDI_Mbed_Team | 0:33fe30a2b785 | 278 | if (m_FREQ > 25000000) |
JDI_Mbed_Team | 0:33fe30a2b785 | 279 | m_Spi.frequency(25000000); |
JDI_Mbed_Team | 0:33fe30a2b785 | 280 | else |
JDI_Mbed_Team | 0:33fe30a2b785 | 281 | m_Spi.frequency(m_FREQ); |
JDI_Mbed_Team | 0:33fe30a2b785 | 282 | } else { |
JDI_Mbed_Team | 0:33fe30a2b785 | 283 | //Try to initialize the card using CMD1(0x00100000) for up to 2 seconds |
JDI_Mbed_Team | 0:33fe30a2b785 | 284 | timer.start(); |
JDI_Mbed_Team | 0:33fe30a2b785 | 285 | do { |
JDI_Mbed_Team | 0:33fe30a2b785 | 286 | token = commandTransaction(CMD1, 0x00100000); |
JDI_Mbed_Team | 0:33fe30a2b785 | 287 | } while (token == 0x01 && timer.read_ms() < 2000); |
JDI_Mbed_Team | 0:33fe30a2b785 | 288 | timer.stop(); |
JDI_Mbed_Team | 0:33fe30a2b785 | 289 | timer.reset(); |
JDI_Mbed_Team | 0:33fe30a2b785 | 290 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 291 | //Check if the card initialized |
JDI_Mbed_Team | 0:33fe30a2b785 | 292 | if (token == 0x00) { |
JDI_Mbed_Team | 0:33fe30a2b785 | 293 | //This is an MMCv3 card |
JDI_Mbed_Team | 0:33fe30a2b785 | 294 | m_CardType = CARD_MMC; |
JDI_Mbed_Team | 0:33fe30a2b785 | 295 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 296 | //Increase the SPI frequency to full speed (up to 20MHz for MMCv3) |
JDI_Mbed_Team | 0:33fe30a2b785 | 297 | if (m_FREQ > 20000000) |
JDI_Mbed_Team | 0:33fe30a2b785 | 298 | m_Spi.frequency(20000000); |
JDI_Mbed_Team | 0:33fe30a2b785 | 299 | else |
JDI_Mbed_Team | 0:33fe30a2b785 | 300 | m_Spi.frequency(m_FREQ); |
JDI_Mbed_Team | 0:33fe30a2b785 | 301 | } else { |
JDI_Mbed_Team | 0:33fe30a2b785 | 302 | //Initialization failed |
JDI_Mbed_Team | 0:33fe30a2b785 | 303 | m_CardType = CARD_UNKNOWN; |
JDI_Mbed_Team | 0:33fe30a2b785 | 304 | return m_Status; |
JDI_Mbed_Team | 0:33fe30a2b785 | 305 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 306 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 307 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 308 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 309 | //Send ACMD42(0x00000000) to disconnect the internal pull-up resistor on pin 1 if necessary |
JDI_Mbed_Team | 0:33fe30a2b785 | 310 | if (m_CardType != CARD_MMC) { |
JDI_Mbed_Team | 0:33fe30a2b785 | 311 | if (commandTransaction(ACMD42, 0x00000000) != 0x00) { |
JDI_Mbed_Team | 0:33fe30a2b785 | 312 | //Initialization failed |
JDI_Mbed_Team | 0:33fe30a2b785 | 313 | m_CardType = CARD_UNKNOWN; |
JDI_Mbed_Team | 0:33fe30a2b785 | 314 | return m_Status; |
JDI_Mbed_Team | 0:33fe30a2b785 | 315 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 316 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 317 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 318 | //Send CMD16(0x00000200) to force the block size to 512B if necessary |
JDI_Mbed_Team | 0:33fe30a2b785 | 319 | if (m_CardType != CARD_SDHC) { |
JDI_Mbed_Team | 0:33fe30a2b785 | 320 | if (commandTransaction(CMD16, 0x00000200) != 0x00) { |
JDI_Mbed_Team | 0:33fe30a2b785 | 321 | //Initialization failed |
JDI_Mbed_Team | 0:33fe30a2b785 | 322 | m_CardType = CARD_UNKNOWN; |
JDI_Mbed_Team | 0:33fe30a2b785 | 323 | return m_Status; |
JDI_Mbed_Team | 0:33fe30a2b785 | 324 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 325 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 326 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 327 | //The card is now initialized |
JDI_Mbed_Team | 0:33fe30a2b785 | 328 | m_Status &= ~STA_NOINIT; |
JDI_Mbed_Team | 0:33fe30a2b785 | 329 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 330 | //Return the disk status |
JDI_Mbed_Team | 0:33fe30a2b785 | 331 | return m_Status; |
JDI_Mbed_Team | 0:33fe30a2b785 | 332 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 333 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 334 | int SDFileSystem::disk_status() |
JDI_Mbed_Team | 0:33fe30a2b785 | 335 | { |
JDI_Mbed_Team | 0:33fe30a2b785 | 336 | //Check the card socket |
JDI_Mbed_Team | 0:33fe30a2b785 | 337 | checkSocket(); |
JDI_Mbed_Team | 0:33fe30a2b785 | 338 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 339 | //Return the disk status |
JDI_Mbed_Team | 0:33fe30a2b785 | 340 | return m_Status; |
JDI_Mbed_Team | 0:33fe30a2b785 | 341 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 342 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 343 | int SDFileSystem::disk_read(uint8_t* buffer, uint32_t sector, uint32_t count) |
JDI_Mbed_Team | 0:33fe30a2b785 | 344 | { |
JDI_Mbed_Team | 0:33fe30a2b785 | 345 | //Make sure the card is initialized before proceeding |
JDI_Mbed_Team | 0:33fe30a2b785 | 346 | if (m_Status & STA_NOINIT) |
JDI_Mbed_Team | 0:33fe30a2b785 | 347 | return RES_NOTRDY; |
JDI_Mbed_Team | 0:33fe30a2b785 | 348 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 349 | //Read a single block, or multiple blocks |
JDI_Mbed_Team | 0:33fe30a2b785 | 350 | if (count > 1) { |
JDI_Mbed_Team | 0:33fe30a2b785 | 351 | return readBlocks((char*)buffer, sector, count) ? RES_OK : RES_ERROR; |
JDI_Mbed_Team | 0:33fe30a2b785 | 352 | } else { |
JDI_Mbed_Team | 0:33fe30a2b785 | 353 | return readBlock((char*)buffer, sector) ? RES_OK : RES_ERROR; |
JDI_Mbed_Team | 0:33fe30a2b785 | 354 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 355 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 356 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 357 | int SDFileSystem::disk_write(const uint8_t* buffer, uint32_t sector, uint32_t count) |
JDI_Mbed_Team | 0:33fe30a2b785 | 358 | { |
JDI_Mbed_Team | 0:33fe30a2b785 | 359 | //Make sure the card is initialized before proceeding |
JDI_Mbed_Team | 0:33fe30a2b785 | 360 | if (m_Status & STA_NOINIT) |
JDI_Mbed_Team | 0:33fe30a2b785 | 361 | return RES_NOTRDY; |
JDI_Mbed_Team | 0:33fe30a2b785 | 362 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 363 | //Make sure the card isn't write protected before proceeding |
JDI_Mbed_Team | 0:33fe30a2b785 | 364 | if (m_Status & STA_PROTECT) |
JDI_Mbed_Team | 0:33fe30a2b785 | 365 | return RES_WRPRT; |
JDI_Mbed_Team | 0:33fe30a2b785 | 366 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 367 | //Write a single block, or multiple blocks |
JDI_Mbed_Team | 0:33fe30a2b785 | 368 | if (count > 1) { |
JDI_Mbed_Team | 0:33fe30a2b785 | 369 | return writeBlocks((const char*)buffer, sector, count) ? RES_OK : RES_ERROR; |
JDI_Mbed_Team | 0:33fe30a2b785 | 370 | } else { |
JDI_Mbed_Team | 0:33fe30a2b785 | 371 | return writeBlock((const char*)buffer, sector) ? RES_OK : RES_ERROR; |
JDI_Mbed_Team | 0:33fe30a2b785 | 372 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 373 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 374 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 375 | int SDFileSystem::disk_sync() |
JDI_Mbed_Team | 0:33fe30a2b785 | 376 | { |
JDI_Mbed_Team | 0:33fe30a2b785 | 377 | //Select the card so we're forced to wait for the end of any internal write processes |
JDI_Mbed_Team | 0:33fe30a2b785 | 378 | if (select()) { |
JDI_Mbed_Team | 0:33fe30a2b785 | 379 | deselect(); |
JDI_Mbed_Team | 0:33fe30a2b785 | 380 | return RES_OK; |
JDI_Mbed_Team | 0:33fe30a2b785 | 381 | } else { |
JDI_Mbed_Team | 0:33fe30a2b785 | 382 | return RES_ERROR; |
JDI_Mbed_Team | 0:33fe30a2b785 | 383 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 384 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 385 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 386 | uint32_t SDFileSystem::disk_sectors() |
JDI_Mbed_Team | 0:33fe30a2b785 | 387 | { |
JDI_Mbed_Team | 0:33fe30a2b785 | 388 | //Make sure the card is initialized before proceeding |
JDI_Mbed_Team | 0:33fe30a2b785 | 389 | if (m_Status & STA_NOINIT) |
JDI_Mbed_Team | 0:33fe30a2b785 | 390 | return 0; |
JDI_Mbed_Team | 0:33fe30a2b785 | 391 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 392 | //Try to read the CSD register up to 3 times |
JDI_Mbed_Team | 0:33fe30a2b785 | 393 | for (int f = 0; f < 3; f++) { |
JDI_Mbed_Team | 0:33fe30a2b785 | 394 | //Select the card, and wait for ready |
JDI_Mbed_Team | 0:33fe30a2b785 | 395 | if(!select()) |
JDI_Mbed_Team | 0:33fe30a2b785 | 396 | break; |
JDI_Mbed_Team | 0:33fe30a2b785 | 397 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 398 | //Send CMD9(0x00000000) to read the CSD register |
JDI_Mbed_Team | 0:33fe30a2b785 | 399 | if (writeCommand(CMD9, 0x00000000) == 0x00) { |
JDI_Mbed_Team | 0:33fe30a2b785 | 400 | //Read the 16B CSD data block |
JDI_Mbed_Team | 0:33fe30a2b785 | 401 | char csd[16]; |
JDI_Mbed_Team | 0:33fe30a2b785 | 402 | bool success = readData(csd, 16); |
JDI_Mbed_Team | 0:33fe30a2b785 | 403 | deselect(); |
JDI_Mbed_Team | 0:33fe30a2b785 | 404 | if (success) { |
JDI_Mbed_Team | 0:33fe30a2b785 | 405 | //Calculate the sector count based on the card type |
JDI_Mbed_Team | 0:33fe30a2b785 | 406 | if ((csd[0] >> 6) == 0x01) { |
JDI_Mbed_Team | 0:33fe30a2b785 | 407 | //Calculate the sector count for a high capacity card |
JDI_Mbed_Team | 0:33fe30a2b785 | 408 | unsigned int size = (((csd[7] & 0x3F) << 16) | (csd[8] << 8) | csd[9]) + 1; |
JDI_Mbed_Team | 0:33fe30a2b785 | 409 | return size << 10; |
JDI_Mbed_Team | 0:33fe30a2b785 | 410 | } else { |
JDI_Mbed_Team | 0:33fe30a2b785 | 411 | //Calculate the sector count for a standard capacity card |
JDI_Mbed_Team | 0:33fe30a2b785 | 412 | unsigned int size = (((csd[6] & 0x03) << 10) | (csd[7] << 2) | ((csd[8] & 0xC0) >> 6)) + 1; |
JDI_Mbed_Team | 0:33fe30a2b785 | 413 | size <<= ((((csd[9] & 0x03) << 1) | ((csd[10] & 0x80) >> 7)) + 2); |
JDI_Mbed_Team | 0:33fe30a2b785 | 414 | size <<= (csd[5] & 0x0F); |
JDI_Mbed_Team | 0:33fe30a2b785 | 415 | return size >> 9; |
JDI_Mbed_Team | 0:33fe30a2b785 | 416 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 417 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 418 | } else { |
JDI_Mbed_Team | 0:33fe30a2b785 | 419 | //The command failed, get out |
JDI_Mbed_Team | 0:33fe30a2b785 | 420 | break; |
JDI_Mbed_Team | 0:33fe30a2b785 | 421 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 422 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 423 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 424 | //The read operation failed 3 times |
JDI_Mbed_Team | 0:33fe30a2b785 | 425 | deselect(); |
JDI_Mbed_Team | 0:33fe30a2b785 | 426 | return 0; |
JDI_Mbed_Team | 0:33fe30a2b785 | 427 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 428 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 429 | void SDFileSystem::onCardRemoval() |
JDI_Mbed_Team | 0:33fe30a2b785 | 430 | { |
JDI_Mbed_Team | 0:33fe30a2b785 | 431 | //Check the card socket |
JDI_Mbed_Team | 0:33fe30a2b785 | 432 | checkSocket(); |
JDI_Mbed_Team | 0:33fe30a2b785 | 433 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 434 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 435 | inline void SDFileSystem::checkSocket() |
JDI_Mbed_Team | 0:33fe30a2b785 | 436 | { |
JDI_Mbed_Team | 0:33fe30a2b785 | 437 | //Use the card detect switch (if available) to determine if the socket is occupied |
JDI_Mbed_Team | 0:33fe30a2b785 | 438 | if (m_CdAssert != -1) { |
JDI_Mbed_Team | 0:33fe30a2b785 | 439 | if (m_Status & STA_NODISK) { |
JDI_Mbed_Team | 0:33fe30a2b785 | 440 | if (m_Cd == m_CdAssert) { |
JDI_Mbed_Team | 0:33fe30a2b785 | 441 | //The socket is now occupied |
JDI_Mbed_Team | 0:33fe30a2b785 | 442 | m_Status &= ~STA_NODISK; |
JDI_Mbed_Team | 0:33fe30a2b785 | 443 | m_CardType = CARD_UNKNOWN; |
JDI_Mbed_Team | 0:33fe30a2b785 | 444 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 445 | } else { |
JDI_Mbed_Team | 0:33fe30a2b785 | 446 | if (m_Cd != m_CdAssert) { |
JDI_Mbed_Team | 0:33fe30a2b785 | 447 | //The socket is now empty |
JDI_Mbed_Team | 0:33fe30a2b785 | 448 | m_Status |= (STA_NODISK | STA_NOINIT); |
JDI_Mbed_Team | 0:33fe30a2b785 | 449 | m_CardType = CARD_NONE; |
JDI_Mbed_Team | 0:33fe30a2b785 | 450 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 451 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 452 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 453 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 454 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 455 | inline bool SDFileSystem::waitReady(int timeout) |
JDI_Mbed_Team | 0:33fe30a2b785 | 456 | { |
JDI_Mbed_Team | 0:33fe30a2b785 | 457 | char resp; |
JDI_Mbed_Team | 0:33fe30a2b785 | 458 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 459 | //Keep sending dummy clocks with DI held high until the card releases the DO line |
JDI_Mbed_Team | 0:33fe30a2b785 | 460 | m_Timer.start(); |
JDI_Mbed_Team | 0:33fe30a2b785 | 461 | do { |
JDI_Mbed_Team | 0:33fe30a2b785 | 462 | resp = m_Spi.write(0xFF); |
JDI_Mbed_Team | 0:33fe30a2b785 | 463 | } while (resp == 0x00 && m_Timer.read_ms() < timeout); |
JDI_Mbed_Team | 0:33fe30a2b785 | 464 | m_Timer.stop(); |
JDI_Mbed_Team | 0:33fe30a2b785 | 465 | m_Timer.reset(); |
JDI_Mbed_Team | 0:33fe30a2b785 | 466 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 467 | //Return success/failure |
JDI_Mbed_Team | 0:33fe30a2b785 | 468 | return (resp > 0x00); |
JDI_Mbed_Team | 0:33fe30a2b785 | 469 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 470 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 471 | inline bool SDFileSystem::select() |
JDI_Mbed_Team | 0:33fe30a2b785 | 472 | { |
JDI_Mbed_Team | 0:33fe30a2b785 | 473 | //Assert /CS |
JDI_Mbed_Team | 0:33fe30a2b785 | 474 | m_Cs = 0; |
JDI_Mbed_Team | 0:33fe30a2b785 | 475 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 476 | //Send 8 dummy clocks with DI held high to enable DO |
JDI_Mbed_Team | 0:33fe30a2b785 | 477 | m_Spi.write(0xFF); |
JDI_Mbed_Team | 0:33fe30a2b785 | 478 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 479 | //Wait for up to 500ms for the card to become ready |
JDI_Mbed_Team | 0:33fe30a2b785 | 480 | if (waitReady(500)) { |
JDI_Mbed_Team | 0:33fe30a2b785 | 481 | return true; |
JDI_Mbed_Team | 0:33fe30a2b785 | 482 | } else { |
JDI_Mbed_Team | 0:33fe30a2b785 | 483 | //We timed out, deselect and return false |
JDI_Mbed_Team | 0:33fe30a2b785 | 484 | deselect(); |
JDI_Mbed_Team | 0:33fe30a2b785 | 485 | return false; |
JDI_Mbed_Team | 0:33fe30a2b785 | 486 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 487 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 488 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 489 | inline void SDFileSystem::deselect() |
JDI_Mbed_Team | 0:33fe30a2b785 | 490 | { |
JDI_Mbed_Team | 0:33fe30a2b785 | 491 | //Deassert /CS |
JDI_Mbed_Team | 0:33fe30a2b785 | 492 | m_Cs = 1; |
JDI_Mbed_Team | 0:33fe30a2b785 | 493 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 494 | //Send 8 dummy clocks with DI held high to disable DO |
JDI_Mbed_Team | 0:33fe30a2b785 | 495 | m_Spi.write(0xFF); |
JDI_Mbed_Team | 0:33fe30a2b785 | 496 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 497 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 498 | inline char SDFileSystem::commandTransaction(char cmd, unsigned int arg, unsigned int* resp) |
JDI_Mbed_Team | 0:33fe30a2b785 | 499 | { |
JDI_Mbed_Team | 0:33fe30a2b785 | 500 | //Select the card, and wait for ready |
JDI_Mbed_Team | 0:33fe30a2b785 | 501 | if(!select()) |
JDI_Mbed_Team | 0:33fe30a2b785 | 502 | return 0xFF; |
JDI_Mbed_Team | 0:33fe30a2b785 | 503 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 504 | //Perform the command transaction |
JDI_Mbed_Team | 0:33fe30a2b785 | 505 | char token = writeCommand(cmd, arg, resp); |
JDI_Mbed_Team | 0:33fe30a2b785 | 506 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 507 | //Deselect the card, and return the R1 response token |
JDI_Mbed_Team | 0:33fe30a2b785 | 508 | deselect(); |
JDI_Mbed_Team | 0:33fe30a2b785 | 509 | return token; |
JDI_Mbed_Team | 0:33fe30a2b785 | 510 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 511 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 512 | char SDFileSystem::writeCommand(char cmd, unsigned int arg, unsigned int* resp) |
JDI_Mbed_Team | 0:33fe30a2b785 | 513 | { |
JDI_Mbed_Team | 0:33fe30a2b785 | 514 | char token; |
JDI_Mbed_Team | 0:33fe30a2b785 | 515 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 516 | //Try to send the command up to 3 times |
JDI_Mbed_Team | 0:33fe30a2b785 | 517 | for (int f = 0; f < 3; f++) { |
JDI_Mbed_Team | 0:33fe30a2b785 | 518 | //Send CMD55(0x00000000) prior to an application specific command |
JDI_Mbed_Team | 0:33fe30a2b785 | 519 | if (cmd == ACMD22 || cmd == ACMD23 || cmd == ACMD41 || cmd == ACMD42) { |
JDI_Mbed_Team | 0:33fe30a2b785 | 520 | token = writeCommand(CMD55, 0x00000000); |
JDI_Mbed_Team | 0:33fe30a2b785 | 521 | if (token > 0x01) |
JDI_Mbed_Team | 0:33fe30a2b785 | 522 | return token; |
JDI_Mbed_Team | 0:33fe30a2b785 | 523 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 524 | //Deselect and reselect the card between CMD55 and an ACMD |
JDI_Mbed_Team | 0:33fe30a2b785 | 525 | deselect(); |
JDI_Mbed_Team | 0:33fe30a2b785 | 526 | if(!select()) |
JDI_Mbed_Team | 0:33fe30a2b785 | 527 | return 0xFF; |
JDI_Mbed_Team | 0:33fe30a2b785 | 528 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 529 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 530 | //Prepare the command packet |
JDI_Mbed_Team | 0:33fe30a2b785 | 531 | char cmdPacket[6]; |
JDI_Mbed_Team | 0:33fe30a2b785 | 532 | cmdPacket[0] = cmd; |
JDI_Mbed_Team | 0:33fe30a2b785 | 533 | cmdPacket[1] = arg >> 24; |
JDI_Mbed_Team | 0:33fe30a2b785 | 534 | cmdPacket[2] = arg >> 16; |
JDI_Mbed_Team | 0:33fe30a2b785 | 535 | cmdPacket[3] = arg >> 8; |
JDI_Mbed_Team | 0:33fe30a2b785 | 536 | cmdPacket[4] = arg; |
JDI_Mbed_Team | 0:33fe30a2b785 | 537 | if (m_Crc || cmd == CMD0 || cmd == CMD8) |
JDI_Mbed_Team | 0:33fe30a2b785 | 538 | cmdPacket[5] = (SDCRC::crc7(cmdPacket, 5) << 1) | 0x01; |
JDI_Mbed_Team | 0:33fe30a2b785 | 539 | else |
JDI_Mbed_Team | 0:33fe30a2b785 | 540 | cmdPacket[5] = 0x01; |
JDI_Mbed_Team | 0:33fe30a2b785 | 541 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 542 | //Send the command packet |
JDI_Mbed_Team | 0:33fe30a2b785 | 543 | for (int i = 0; i < 6; i++) |
JDI_Mbed_Team | 0:33fe30a2b785 | 544 | m_Spi.write(cmdPacket[i]); |
JDI_Mbed_Team | 0:33fe30a2b785 | 545 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 546 | //Discard the stuff byte immediately following CMD12 |
JDI_Mbed_Team | 0:33fe30a2b785 | 547 | if (cmd == CMD12) |
JDI_Mbed_Team | 0:33fe30a2b785 | 548 | m_Spi.write(0xFF); |
JDI_Mbed_Team | 0:33fe30a2b785 | 549 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 550 | //Allow up to 8 bytes of delay for the R1 response token |
JDI_Mbed_Team | 0:33fe30a2b785 | 551 | for (int i = 0; i < 9; i++) { |
JDI_Mbed_Team | 0:33fe30a2b785 | 552 | token = m_Spi.write(0xFF); |
JDI_Mbed_Team | 0:33fe30a2b785 | 553 | if (!(token & 0x80)) |
JDI_Mbed_Team | 0:33fe30a2b785 | 554 | break; |
JDI_Mbed_Team | 0:33fe30a2b785 | 555 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 556 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 557 | //Verify the R1 response token |
JDI_Mbed_Team | 0:33fe30a2b785 | 558 | if (token == 0xFF) { |
JDI_Mbed_Team | 0:33fe30a2b785 | 559 | //No data was received, get out early |
JDI_Mbed_Team | 0:33fe30a2b785 | 560 | break; |
JDI_Mbed_Team | 0:33fe30a2b785 | 561 | } else if (token & (1 << 3)) { |
JDI_Mbed_Team | 0:33fe30a2b785 | 562 | //There was a CRC error, try again |
JDI_Mbed_Team | 0:33fe30a2b785 | 563 | continue; |
JDI_Mbed_Team | 0:33fe30a2b785 | 564 | } else if (token > 0x01) { |
JDI_Mbed_Team | 0:33fe30a2b785 | 565 | //An error occured, get out early |
JDI_Mbed_Team | 0:33fe30a2b785 | 566 | break; |
JDI_Mbed_Team | 0:33fe30a2b785 | 567 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 568 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 569 | //Handle R2 and R3/R7 response tokens |
JDI_Mbed_Team | 0:33fe30a2b785 | 570 | if (cmd == CMD13 && resp != NULL) { |
JDI_Mbed_Team | 0:33fe30a2b785 | 571 | //Read the R2 response value |
JDI_Mbed_Team | 0:33fe30a2b785 | 572 | *resp = m_Spi.write(0xFF); |
JDI_Mbed_Team | 0:33fe30a2b785 | 573 | } else if ((cmd == CMD8 || cmd == CMD58) && resp != NULL) { |
JDI_Mbed_Team | 0:33fe30a2b785 | 574 | //Read the R3/R7 response value |
JDI_Mbed_Team | 0:33fe30a2b785 | 575 | *resp = (m_Spi.write(0xFF) << 24); |
JDI_Mbed_Team | 0:33fe30a2b785 | 576 | *resp |= (m_Spi.write(0xFF) << 16); |
JDI_Mbed_Team | 0:33fe30a2b785 | 577 | *resp |= (m_Spi.write(0xFF) << 8); |
JDI_Mbed_Team | 0:33fe30a2b785 | 578 | *resp |= m_Spi.write(0xFF); |
JDI_Mbed_Team | 0:33fe30a2b785 | 579 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 580 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 581 | //The command was successful |
JDI_Mbed_Team | 0:33fe30a2b785 | 582 | break; |
JDI_Mbed_Team | 0:33fe30a2b785 | 583 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 584 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 585 | //Return the R1 response token |
JDI_Mbed_Team | 0:33fe30a2b785 | 586 | return token; |
JDI_Mbed_Team | 0:33fe30a2b785 | 587 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 588 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 589 | bool SDFileSystem::readData(char* buffer, int length) |
JDI_Mbed_Team | 0:33fe30a2b785 | 590 | { |
JDI_Mbed_Team | 0:33fe30a2b785 | 591 | char token; |
JDI_Mbed_Team | 0:33fe30a2b785 | 592 | unsigned short crc; |
JDI_Mbed_Team | 0:33fe30a2b785 | 593 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 594 | //Wait for up to 500ms for a token to arrive |
JDI_Mbed_Team | 0:33fe30a2b785 | 595 | m_Timer.start(); |
JDI_Mbed_Team | 0:33fe30a2b785 | 596 | do { |
JDI_Mbed_Team | 0:33fe30a2b785 | 597 | token = m_Spi.write(0xFF); |
JDI_Mbed_Team | 0:33fe30a2b785 | 598 | } while (token == 0xFF && m_Timer.read_ms() < 500); |
JDI_Mbed_Team | 0:33fe30a2b785 | 599 | m_Timer.stop(); |
JDI_Mbed_Team | 0:33fe30a2b785 | 600 | m_Timer.reset(); |
JDI_Mbed_Team | 0:33fe30a2b785 | 601 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 602 | //Check if a valid start block token was received |
JDI_Mbed_Team | 0:33fe30a2b785 | 603 | if (token != 0xFE) |
JDI_Mbed_Team | 0:33fe30a2b785 | 604 | return false; |
JDI_Mbed_Team | 0:33fe30a2b785 | 605 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 606 | //Check if large frames are enabled or not |
JDI_Mbed_Team | 0:33fe30a2b785 | 607 | if (m_LargeFrames) { |
JDI_Mbed_Team | 0:33fe30a2b785 | 608 | //Switch to 16-bit frames for better performance |
JDI_Mbed_Team | 0:33fe30a2b785 | 609 | m_Spi.format(16, 0); |
JDI_Mbed_Team | 0:33fe30a2b785 | 610 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 611 | //Read the data block into the buffer |
JDI_Mbed_Team | 0:33fe30a2b785 | 612 | unsigned short dataWord; |
JDI_Mbed_Team | 0:33fe30a2b785 | 613 | for (int i = 0; i < length; i += 2) { |
JDI_Mbed_Team | 0:33fe30a2b785 | 614 | dataWord = m_Spi.write(0xFFFF); |
JDI_Mbed_Team | 0:33fe30a2b785 | 615 | buffer[i] = dataWord >> 8; |
JDI_Mbed_Team | 0:33fe30a2b785 | 616 | buffer[i + 1] = dataWord; |
JDI_Mbed_Team | 0:33fe30a2b785 | 617 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 618 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 619 | //Read the CRC16 checksum for the data block |
JDI_Mbed_Team | 0:33fe30a2b785 | 620 | crc = m_Spi.write(0xFFFF); |
JDI_Mbed_Team | 0:33fe30a2b785 | 621 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 622 | //Switch back to 8-bit frames |
JDI_Mbed_Team | 0:33fe30a2b785 | 623 | m_Spi.format(8, 0); |
JDI_Mbed_Team | 0:33fe30a2b785 | 624 | } else { |
JDI_Mbed_Team | 0:33fe30a2b785 | 625 | //Read the data into the buffer |
JDI_Mbed_Team | 0:33fe30a2b785 | 626 | for (int i = 0; i < length; i++) |
JDI_Mbed_Team | 0:33fe30a2b785 | 627 | buffer[i] = m_Spi.write(0xFF); |
JDI_Mbed_Team | 0:33fe30a2b785 | 628 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 629 | //Read the CRC16 checksum for the data block |
JDI_Mbed_Team | 0:33fe30a2b785 | 630 | crc = (m_Spi.write(0xFF) << 8); |
JDI_Mbed_Team | 0:33fe30a2b785 | 631 | crc |= m_Spi.write(0xFF); |
JDI_Mbed_Team | 0:33fe30a2b785 | 632 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 633 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 634 | //Return the validity of the CRC16 checksum (if enabled) |
JDI_Mbed_Team | 0:33fe30a2b785 | 635 | return (!m_Crc || crc == SDCRC::crc16(buffer, length)); |
JDI_Mbed_Team | 0:33fe30a2b785 | 636 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 637 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 638 | char SDFileSystem::writeData(const char* buffer, char token) |
JDI_Mbed_Team | 0:33fe30a2b785 | 639 | { |
JDI_Mbed_Team | 0:33fe30a2b785 | 640 | //Calculate the CRC16 checksum for the data block (if enabled) |
JDI_Mbed_Team | 0:33fe30a2b785 | 641 | unsigned short crc = (m_Crc) ? SDCRC::crc16(buffer, 512) : 0xFFFF; |
JDI_Mbed_Team | 0:33fe30a2b785 | 642 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 643 | //Wait for up to 500ms for the card to become ready |
JDI_Mbed_Team | 0:33fe30a2b785 | 644 | if (!waitReady(500)) |
JDI_Mbed_Team | 0:33fe30a2b785 | 645 | return false; |
JDI_Mbed_Team | 0:33fe30a2b785 | 646 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 647 | //Send the start block token |
JDI_Mbed_Team | 0:33fe30a2b785 | 648 | m_Spi.write(token); |
JDI_Mbed_Team | 0:33fe30a2b785 | 649 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 650 | //Check if large frames are enabled or not |
JDI_Mbed_Team | 0:33fe30a2b785 | 651 | if (m_LargeFrames) { |
JDI_Mbed_Team | 0:33fe30a2b785 | 652 | //Switch to 16-bit frames for better performance |
JDI_Mbed_Team | 0:33fe30a2b785 | 653 | m_Spi.format(16, 0); |
JDI_Mbed_Team | 0:33fe30a2b785 | 654 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 655 | //Write the data block from the buffer |
JDI_Mbed_Team | 0:33fe30a2b785 | 656 | for (int i = 0; i < 512; i += 2) |
JDI_Mbed_Team | 0:33fe30a2b785 | 657 | m_Spi.write((buffer[i] << 8) | buffer[i + 1]); |
JDI_Mbed_Team | 0:33fe30a2b785 | 658 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 659 | //Send the CRC16 checksum for the data block |
JDI_Mbed_Team | 0:33fe30a2b785 | 660 | m_Spi.write(crc); |
JDI_Mbed_Team | 0:33fe30a2b785 | 661 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 662 | //Switch back to 8-bit frames |
JDI_Mbed_Team | 0:33fe30a2b785 | 663 | m_Spi.format(8, 0); |
JDI_Mbed_Team | 0:33fe30a2b785 | 664 | } else { |
JDI_Mbed_Team | 0:33fe30a2b785 | 665 | //Write the data block from the buffer |
JDI_Mbed_Team | 0:33fe30a2b785 | 666 | for (int i = 0; i < 512; i++) |
JDI_Mbed_Team | 0:33fe30a2b785 | 667 | m_Spi.write(buffer[i]); |
JDI_Mbed_Team | 0:33fe30a2b785 | 668 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 669 | //Send the CRC16 checksum for the data block |
JDI_Mbed_Team | 0:33fe30a2b785 | 670 | m_Spi.write(crc >> 8); |
JDI_Mbed_Team | 0:33fe30a2b785 | 671 | m_Spi.write(crc); |
JDI_Mbed_Team | 0:33fe30a2b785 | 672 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 673 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 674 | //Return the data response token |
JDI_Mbed_Team | 0:33fe30a2b785 | 675 | return (m_Spi.write(0xFF) & 0x1F); |
JDI_Mbed_Team | 0:33fe30a2b785 | 676 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 677 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 678 | inline bool SDFileSystem::readBlock(char* buffer, unsigned int lba) |
JDI_Mbed_Team | 0:33fe30a2b785 | 679 | { |
JDI_Mbed_Team | 0:33fe30a2b785 | 680 | //Try to read the block up to 3 times |
JDI_Mbed_Team | 0:33fe30a2b785 | 681 | for (int f = 0; f < 3; f++) { |
JDI_Mbed_Team | 0:33fe30a2b785 | 682 | //Select the card, and wait for ready |
JDI_Mbed_Team | 0:33fe30a2b785 | 683 | if(!select()) |
JDI_Mbed_Team | 0:33fe30a2b785 | 684 | break; |
JDI_Mbed_Team | 0:33fe30a2b785 | 685 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 686 | //Send CMD17(block) to read a single block |
JDI_Mbed_Team | 0:33fe30a2b785 | 687 | if (writeCommand(CMD17, (m_CardType == CARD_SDHC) ? lba : lba << 9) == 0x00) { |
JDI_Mbed_Team | 0:33fe30a2b785 | 688 | //Try to read the block, and deselect the card |
JDI_Mbed_Team | 0:33fe30a2b785 | 689 | bool success = readData(buffer, 512); |
JDI_Mbed_Team | 0:33fe30a2b785 | 690 | deselect(); |
JDI_Mbed_Team | 0:33fe30a2b785 | 691 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 692 | //Return if successful |
JDI_Mbed_Team | 0:33fe30a2b785 | 693 | if (success) |
JDI_Mbed_Team | 0:33fe30a2b785 | 694 | return true; |
JDI_Mbed_Team | 0:33fe30a2b785 | 695 | } else { |
JDI_Mbed_Team | 0:33fe30a2b785 | 696 | //The command failed, get out |
JDI_Mbed_Team | 0:33fe30a2b785 | 697 | break; |
JDI_Mbed_Team | 0:33fe30a2b785 | 698 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 699 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 700 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 701 | //The single block read failed |
JDI_Mbed_Team | 0:33fe30a2b785 | 702 | deselect(); |
JDI_Mbed_Team | 0:33fe30a2b785 | 703 | return false; |
JDI_Mbed_Team | 0:33fe30a2b785 | 704 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 705 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 706 | inline bool SDFileSystem::readBlocks(char* buffer, unsigned int lba, unsigned int count) |
JDI_Mbed_Team | 0:33fe30a2b785 | 707 | { |
JDI_Mbed_Team | 0:33fe30a2b785 | 708 | //Try to read each block up to 3 times |
JDI_Mbed_Team | 0:33fe30a2b785 | 709 | for (int f = 0; f < 3;) { |
JDI_Mbed_Team | 0:33fe30a2b785 | 710 | //Select the card, and wait for ready |
JDI_Mbed_Team | 0:33fe30a2b785 | 711 | if(!select()) |
JDI_Mbed_Team | 0:33fe30a2b785 | 712 | break; |
JDI_Mbed_Team | 0:33fe30a2b785 | 713 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 714 | //Send CMD18(block) to read multiple blocks |
JDI_Mbed_Team | 0:33fe30a2b785 | 715 | if (writeCommand(CMD18, (m_CardType == CARD_SDHC) ? lba : lba << 9) == 0x00) { |
JDI_Mbed_Team | 0:33fe30a2b785 | 716 | //Try to read all of the data blocks |
JDI_Mbed_Team | 0:33fe30a2b785 | 717 | do { |
JDI_Mbed_Team | 0:33fe30a2b785 | 718 | //Read the next block, and break on errors |
JDI_Mbed_Team | 0:33fe30a2b785 | 719 | if (!readData(buffer, 512)) { |
JDI_Mbed_Team | 0:33fe30a2b785 | 720 | f++; |
JDI_Mbed_Team | 0:33fe30a2b785 | 721 | break; |
JDI_Mbed_Team | 0:33fe30a2b785 | 722 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 723 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 724 | //Update the variables |
JDI_Mbed_Team | 0:33fe30a2b785 | 725 | lba++; |
JDI_Mbed_Team | 0:33fe30a2b785 | 726 | buffer += 512; |
JDI_Mbed_Team | 0:33fe30a2b785 | 727 | f = 0; |
JDI_Mbed_Team | 0:33fe30a2b785 | 728 | } while (--count); |
JDI_Mbed_Team | 0:33fe30a2b785 | 729 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 730 | //Send CMD12(0x00000000) to stop the transmission |
JDI_Mbed_Team | 0:33fe30a2b785 | 731 | if (writeCommand(CMD12, 0x00000000) != 0x00) { |
JDI_Mbed_Team | 0:33fe30a2b785 | 732 | //The command failed, get out |
JDI_Mbed_Team | 0:33fe30a2b785 | 733 | break; |
JDI_Mbed_Team | 0:33fe30a2b785 | 734 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 735 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 736 | //Deselect the card, and return if successful |
JDI_Mbed_Team | 0:33fe30a2b785 | 737 | deselect(); |
JDI_Mbed_Team | 0:33fe30a2b785 | 738 | if (count == 0) |
JDI_Mbed_Team | 0:33fe30a2b785 | 739 | return true; |
JDI_Mbed_Team | 0:33fe30a2b785 | 740 | } else { |
JDI_Mbed_Team | 0:33fe30a2b785 | 741 | //The command failed, get out |
JDI_Mbed_Team | 0:33fe30a2b785 | 742 | break; |
JDI_Mbed_Team | 0:33fe30a2b785 | 743 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 744 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 745 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 746 | //The multiple block read failed |
JDI_Mbed_Team | 0:33fe30a2b785 | 747 | deselect(); |
JDI_Mbed_Team | 0:33fe30a2b785 | 748 | return false; |
JDI_Mbed_Team | 0:33fe30a2b785 | 749 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 750 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 751 | inline bool SDFileSystem::writeBlock(const char* buffer, unsigned int lba) |
JDI_Mbed_Team | 0:33fe30a2b785 | 752 | { |
JDI_Mbed_Team | 0:33fe30a2b785 | 753 | //Try to write the block up to 3 times |
JDI_Mbed_Team | 0:33fe30a2b785 | 754 | for (int f = 0; f < 3; f++) { |
JDI_Mbed_Team | 0:33fe30a2b785 | 755 | //Select the card, and wait for ready |
JDI_Mbed_Team | 0:33fe30a2b785 | 756 | if(!select()) |
JDI_Mbed_Team | 0:33fe30a2b785 | 757 | break; |
JDI_Mbed_Team | 0:33fe30a2b785 | 758 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 759 | //Send CMD24(block) to write a single block |
JDI_Mbed_Team | 0:33fe30a2b785 | 760 | if (writeCommand(CMD24, (m_CardType == CARD_SDHC) ? lba : lba << 9) == 0x00) { |
JDI_Mbed_Team | 0:33fe30a2b785 | 761 | //Try to write the block, and deselect the card |
JDI_Mbed_Team | 0:33fe30a2b785 | 762 | char token = writeData(buffer, 0xFE); |
JDI_Mbed_Team | 0:33fe30a2b785 | 763 | deselect(); |
JDI_Mbed_Team | 0:33fe30a2b785 | 764 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 765 | //Check the data response token |
JDI_Mbed_Team | 0:33fe30a2b785 | 766 | if (token == 0x0A) { |
JDI_Mbed_Team | 0:33fe30a2b785 | 767 | //A CRC error occured, try again |
JDI_Mbed_Team | 0:33fe30a2b785 | 768 | continue; |
JDI_Mbed_Team | 0:33fe30a2b785 | 769 | } else if (token == 0x0C) { |
JDI_Mbed_Team | 0:33fe30a2b785 | 770 | //A write error occured, get out |
JDI_Mbed_Team | 0:33fe30a2b785 | 771 | break; |
JDI_Mbed_Team | 0:33fe30a2b785 | 772 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 773 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 774 | //Send CMD13(0x00000000) to verify that the programming was successful if enabled |
JDI_Mbed_Team | 0:33fe30a2b785 | 775 | if (m_WriteValidation) { |
JDI_Mbed_Team | 0:33fe30a2b785 | 776 | unsigned int resp; |
JDI_Mbed_Team | 0:33fe30a2b785 | 777 | if (commandTransaction(CMD13, 0x00000000, &resp) != 0x00 || resp != 0x00) { |
JDI_Mbed_Team | 0:33fe30a2b785 | 778 | //Some manner of unrecoverable write error occured during programming, get out |
JDI_Mbed_Team | 0:33fe30a2b785 | 779 | break; |
JDI_Mbed_Team | 0:33fe30a2b785 | 780 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 781 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 782 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 783 | //The data was written successfully |
JDI_Mbed_Team | 0:33fe30a2b785 | 784 | return true; |
JDI_Mbed_Team | 0:33fe30a2b785 | 785 | } else { |
JDI_Mbed_Team | 0:33fe30a2b785 | 786 | //The command failed, get out |
JDI_Mbed_Team | 0:33fe30a2b785 | 787 | break; |
JDI_Mbed_Team | 0:33fe30a2b785 | 788 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 789 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 790 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 791 | //The single block write failed |
JDI_Mbed_Team | 0:33fe30a2b785 | 792 | deselect(); |
JDI_Mbed_Team | 0:33fe30a2b785 | 793 | return false; |
JDI_Mbed_Team | 0:33fe30a2b785 | 794 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 795 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 796 | inline bool SDFileSystem::writeBlocks(const char* buffer, unsigned int lba, unsigned int count) |
JDI_Mbed_Team | 0:33fe30a2b785 | 797 | { |
JDI_Mbed_Team | 0:33fe30a2b785 | 798 | char token; |
JDI_Mbed_Team | 0:33fe30a2b785 | 799 | const char* currentBuffer = buffer; |
JDI_Mbed_Team | 0:33fe30a2b785 | 800 | unsigned int currentLba = lba; |
JDI_Mbed_Team | 0:33fe30a2b785 | 801 | int currentCount = count; |
JDI_Mbed_Team | 0:33fe30a2b785 | 802 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 803 | //Try to write each block up to 3 times |
JDI_Mbed_Team | 0:33fe30a2b785 | 804 | for (int f = 0; f < 3;) { |
JDI_Mbed_Team | 0:33fe30a2b785 | 805 | //If this is an SD card, send ACMD23(count) to set the number of blocks to pre-erase |
JDI_Mbed_Team | 0:33fe30a2b785 | 806 | if (m_CardType != CARD_MMC) { |
JDI_Mbed_Team | 0:33fe30a2b785 | 807 | if (commandTransaction(ACMD23, currentCount) != 0x00) { |
JDI_Mbed_Team | 0:33fe30a2b785 | 808 | //The command failed, get out |
JDI_Mbed_Team | 0:33fe30a2b785 | 809 | break; |
JDI_Mbed_Team | 0:33fe30a2b785 | 810 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 811 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 812 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 813 | //Select the card, and wait for ready |
JDI_Mbed_Team | 0:33fe30a2b785 | 814 | if(!select()) |
JDI_Mbed_Team | 0:33fe30a2b785 | 815 | break; |
JDI_Mbed_Team | 0:33fe30a2b785 | 816 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 817 | //Send CMD25(block) to write multiple blocks |
JDI_Mbed_Team | 0:33fe30a2b785 | 818 | if (writeCommand(CMD25, (m_CardType == CARD_SDHC) ? currentLba : currentLba << 9) == 0x00) { |
JDI_Mbed_Team | 0:33fe30a2b785 | 819 | //Try to write all of the data blocks |
JDI_Mbed_Team | 0:33fe30a2b785 | 820 | do { |
JDI_Mbed_Team | 0:33fe30a2b785 | 821 | //Write the next block and break on errors |
JDI_Mbed_Team | 0:33fe30a2b785 | 822 | token = writeData(currentBuffer, 0xFC); |
JDI_Mbed_Team | 0:33fe30a2b785 | 823 | if (token != 0x05) { |
JDI_Mbed_Team | 0:33fe30a2b785 | 824 | f++; |
JDI_Mbed_Team | 0:33fe30a2b785 | 825 | break; |
JDI_Mbed_Team | 0:33fe30a2b785 | 826 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 827 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 828 | //Update the variables |
JDI_Mbed_Team | 0:33fe30a2b785 | 829 | currentBuffer += 512; |
JDI_Mbed_Team | 0:33fe30a2b785 | 830 | f = 0; |
JDI_Mbed_Team | 0:33fe30a2b785 | 831 | } while (--currentCount); |
JDI_Mbed_Team | 0:33fe30a2b785 | 832 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 833 | //Wait for up to 500ms for the card to finish processing the last block |
JDI_Mbed_Team | 0:33fe30a2b785 | 834 | if (!waitReady(500)) |
JDI_Mbed_Team | 0:33fe30a2b785 | 835 | break; |
JDI_Mbed_Team | 0:33fe30a2b785 | 836 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 837 | //Finalize the transmission |
JDI_Mbed_Team | 0:33fe30a2b785 | 838 | if (currentCount == 0) { |
JDI_Mbed_Team | 0:33fe30a2b785 | 839 | //Send the stop tran token, and deselect the card |
JDI_Mbed_Team | 0:33fe30a2b785 | 840 | m_Spi.write(0xFD); |
JDI_Mbed_Team | 0:33fe30a2b785 | 841 | deselect(); |
JDI_Mbed_Team | 0:33fe30a2b785 | 842 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 843 | //Send CMD13(0x00000000) to verify that the programming was successful if enabled |
JDI_Mbed_Team | 0:33fe30a2b785 | 844 | if (m_WriteValidation) { |
JDI_Mbed_Team | 0:33fe30a2b785 | 845 | unsigned int resp; |
JDI_Mbed_Team | 0:33fe30a2b785 | 846 | if (commandTransaction(CMD13, 0x00000000, &resp) != 0x00 || resp != 0x00) { |
JDI_Mbed_Team | 0:33fe30a2b785 | 847 | //Some manner of unrecoverable write error occured during programming, get out |
JDI_Mbed_Team | 0:33fe30a2b785 | 848 | break; |
JDI_Mbed_Team | 0:33fe30a2b785 | 849 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 850 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 851 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 852 | //The data was written successfully |
JDI_Mbed_Team | 0:33fe30a2b785 | 853 | return true; |
JDI_Mbed_Team | 0:33fe30a2b785 | 854 | } else { |
JDI_Mbed_Team | 0:33fe30a2b785 | 855 | //Send CMD12(0x00000000) to abort the transmission |
JDI_Mbed_Team | 0:33fe30a2b785 | 856 | if (writeCommand(CMD12, 0x00000000) != 0x00) { |
JDI_Mbed_Team | 0:33fe30a2b785 | 857 | //The command failed, get out |
JDI_Mbed_Team | 0:33fe30a2b785 | 858 | break; |
JDI_Mbed_Team | 0:33fe30a2b785 | 859 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 860 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 861 | //Deselect the card |
JDI_Mbed_Team | 0:33fe30a2b785 | 862 | deselect(); |
JDI_Mbed_Team | 0:33fe30a2b785 | 863 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 864 | //Check the error token |
JDI_Mbed_Team | 0:33fe30a2b785 | 865 | if (token == 0x0A) { |
JDI_Mbed_Team | 0:33fe30a2b785 | 866 | //Determine the number of well written blocks if possible |
JDI_Mbed_Team | 0:33fe30a2b785 | 867 | unsigned int writtenBlocks = 0; |
JDI_Mbed_Team | 0:33fe30a2b785 | 868 | if (m_CardType != CARD_MMC && select()) { |
JDI_Mbed_Team | 0:33fe30a2b785 | 869 | //Send ACMD22(0x00000000) to get the number of well written blocks |
JDI_Mbed_Team | 0:33fe30a2b785 | 870 | if (writeCommand(ACMD22, 0x00000000) == 0x00) { |
JDI_Mbed_Team | 0:33fe30a2b785 | 871 | //Read the data |
JDI_Mbed_Team | 0:33fe30a2b785 | 872 | char acmdData[4]; |
JDI_Mbed_Team | 0:33fe30a2b785 | 873 | if (readData(acmdData, 4)) { |
JDI_Mbed_Team | 0:33fe30a2b785 | 874 | //Extract the number of well written blocks |
JDI_Mbed_Team | 0:33fe30a2b785 | 875 | writtenBlocks = acmdData[0] << 24; |
JDI_Mbed_Team | 0:33fe30a2b785 | 876 | writtenBlocks |= acmdData[1] << 16; |
JDI_Mbed_Team | 0:33fe30a2b785 | 877 | writtenBlocks |= acmdData[2] << 8; |
JDI_Mbed_Team | 0:33fe30a2b785 | 878 | writtenBlocks |= acmdData[3]; |
JDI_Mbed_Team | 0:33fe30a2b785 | 879 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 880 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 881 | deselect(); |
JDI_Mbed_Team | 0:33fe30a2b785 | 882 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 883 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 884 | //Roll back the variables based on the number of well written blocks |
JDI_Mbed_Team | 0:33fe30a2b785 | 885 | currentBuffer = buffer + (writtenBlocks << 9); |
JDI_Mbed_Team | 0:33fe30a2b785 | 886 | currentLba = lba + writtenBlocks; |
JDI_Mbed_Team | 0:33fe30a2b785 | 887 | currentCount = count - writtenBlocks; |
JDI_Mbed_Team | 0:33fe30a2b785 | 888 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 889 | //Try again |
JDI_Mbed_Team | 0:33fe30a2b785 | 890 | continue; |
JDI_Mbed_Team | 0:33fe30a2b785 | 891 | } else { |
JDI_Mbed_Team | 0:33fe30a2b785 | 892 | //A write error occured, get out |
JDI_Mbed_Team | 0:33fe30a2b785 | 893 | break; |
JDI_Mbed_Team | 0:33fe30a2b785 | 894 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 895 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 896 | } else { |
JDI_Mbed_Team | 0:33fe30a2b785 | 897 | //The command failed, get out |
JDI_Mbed_Team | 0:33fe30a2b785 | 898 | break; |
JDI_Mbed_Team | 0:33fe30a2b785 | 899 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 900 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 901 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 902 | //The multiple block write failed |
JDI_Mbed_Team | 0:33fe30a2b785 | 903 | deselect(); |
JDI_Mbed_Team | 0:33fe30a2b785 | 904 | return false; |
JDI_Mbed_Team | 0:33fe30a2b785 | 905 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 906 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 907 | bool SDFileSystem::enableHighSpeedMode() |
JDI_Mbed_Team | 0:33fe30a2b785 | 908 | { |
JDI_Mbed_Team | 0:33fe30a2b785 | 909 | //Try to issue CMD6 up to 3 times |
JDI_Mbed_Team | 0:33fe30a2b785 | 910 | for (int f = 0; f < 3; f++) { |
JDI_Mbed_Team | 0:33fe30a2b785 | 911 | //Select the card, and wait for ready |
JDI_Mbed_Team | 0:33fe30a2b785 | 912 | if(!select()) |
JDI_Mbed_Team | 0:33fe30a2b785 | 913 | break; |
JDI_Mbed_Team | 0:33fe30a2b785 | 914 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 915 | //Send CMD6(0x80FFFFF1) to change the access mode to high speed |
JDI_Mbed_Team | 0:33fe30a2b785 | 916 | if (writeCommand(CMD6, 0x80FFFFF1) == 0x00) { |
JDI_Mbed_Team | 0:33fe30a2b785 | 917 | //Read the 64B status data block |
JDI_Mbed_Team | 0:33fe30a2b785 | 918 | char status[64]; |
JDI_Mbed_Team | 0:33fe30a2b785 | 919 | bool success = readData(status, 64); |
JDI_Mbed_Team | 0:33fe30a2b785 | 920 | deselect(); |
JDI_Mbed_Team | 0:33fe30a2b785 | 921 | if (success) { |
JDI_Mbed_Team | 0:33fe30a2b785 | 922 | //Return whether or not the operation was successful |
JDI_Mbed_Team | 0:33fe30a2b785 | 923 | return ((status[16] & 0x0F) == 0x1); |
JDI_Mbed_Team | 0:33fe30a2b785 | 924 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 925 | } else { |
JDI_Mbed_Team | 0:33fe30a2b785 | 926 | //The command failed, get out |
JDI_Mbed_Team | 0:33fe30a2b785 | 927 | break; |
JDI_Mbed_Team | 0:33fe30a2b785 | 928 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 929 | } |
JDI_Mbed_Team | 0:33fe30a2b785 | 930 | |
JDI_Mbed_Team | 0:33fe30a2b785 | 931 | //The operation failed 3 times |
JDI_Mbed_Team | 0:33fe30a2b785 | 932 | deselect(); |
JDI_Mbed_Team | 0:33fe30a2b785 | 933 | return false; |
JDI_Mbed_Team | 0:33fe30a2b785 | 934 | } |