QVGA_TFT_test - This is test program for running 192GC00(240 x 32…

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Yuji Notsu / Mbed 2 deprecated QVGA_TFT_test

This is test program for running 192GC00(240 x 320 dot, 65K Color TFT LCD module ) on Star Board Orange.

SDHCFileSystem.cpp@0:0e2aded4edb0, 2011-01-21 (annotated)

Committer:: y_notsu
Date:: Fri Jan 21 12:51:26 2011 +0000
Revision:: 0:0e2aded4edb0

Who changed what in which revision?

User	Revision	Line number	New contents of line
y_notsu	0:0e2aded4edb0	1	/* mbed SDFileSystem Library, for providing file access to SD cards
y_notsu	0:0e2aded4edb0	2	* Copyright (c) 2008-2010, sford
y_notsu	0:0e2aded4edb0	3	*
y_notsu	0:0e2aded4edb0	4	* Permission is hereby granted, free of charge, to any person obtaining a copy
y_notsu	0:0e2aded4edb0	5	* of this software and associated documentation files (the "Software"), to deal
y_notsu	0:0e2aded4edb0	6	* in the Software without restriction, including without limitation the rights
y_notsu	0:0e2aded4edb0	7	* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
y_notsu	0:0e2aded4edb0	8	* copies of the Software, and to permit persons to whom the Software is
y_notsu	0:0e2aded4edb0	9	* furnished to do so, subject to the following conditions:
y_notsu	0:0e2aded4edb0	10	*
y_notsu	0:0e2aded4edb0	11	* The above copyright notice and this permission notice shall be included in
y_notsu	0:0e2aded4edb0	12	* all copies or substantial portions of the Software.
y_notsu	0:0e2aded4edb0	13	*
y_notsu	0:0e2aded4edb0	14	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
y_notsu	0:0e2aded4edb0	15	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
y_notsu	0:0e2aded4edb0	16	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
y_notsu	0:0e2aded4edb0	17	* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
y_notsu	0:0e2aded4edb0	18	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
y_notsu	0:0e2aded4edb0	19	* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
y_notsu	0:0e2aded4edb0	20	* THE SOFTWARE.
y_notsu	0:0e2aded4edb0	21	*/
y_notsu	0:0e2aded4edb0	22
y_notsu	0:0e2aded4edb0	23	//* Introduction
y_notsu	0:0e2aded4edb0	24	// * ------------
y_notsu	0:0e2aded4edb0	25	// * SD and MMC cards support a number of interfaces, but common to them all
y_notsu	0:0e2aded4edb0	26	// * is one based on SPI. This is the one I'm implmenting because it means
y_notsu	0:0e2aded4edb0	27	// * it is much more portable even though not so performant, and we already
y_notsu	0:0e2aded4edb0	28	// * have the mbed SPI Interface!
y_notsu	0:0e2aded4edb0	29	// *
y_notsu	0:0e2aded4edb0	30	// * The main reference I'm using is Chapter 7, "SPI Mode" of:
y_notsu	0:0e2aded4edb0	31	// * http://www.sdcard.org/developers/tech/sdcard/pls/Simplified_Physical_Layer_Spec.pdf
y_notsu	0:0e2aded4edb0	32	// *
y_notsu	0:0e2aded4edb0	33	// * SPI Startup
y_notsu	0:0e2aded4edb0	34	// * -----------
y_notsu	0:0e2aded4edb0	35	// * The SD card powers up in SD mode. The SPI interface mode is selected by
y_notsu	0:0e2aded4edb0	36	// * asserting CS low and sending the reset command (CMD0). The card will
y_notsu	0:0e2aded4edb0	37	// * respond with a (R1) response.
y_notsu	0:0e2aded4edb0	38	// *
y_notsu	0:0e2aded4edb0	39	// * CMD8 is optionally sent to determine the voltage range supported, and
y_notsu	0:0e2aded4edb0	40	// * indirectly determine whether it is a version 1.x SD/non-SD card or
y_notsu	0:0e2aded4edb0	41	// * version 2.x. I'll just ignore this for now.
y_notsu	0:0e2aded4edb0	42	// *
y_notsu	0:0e2aded4edb0	43	// * ACMD41 is repeatedly issued to initialise the card, until "in idle"
y_notsu	0:0e2aded4edb0	44	// * (bit 0) of the R1 response goes to '0', indicating it is initialised.
y_notsu	0:0e2aded4edb0	45	// *
y_notsu	0:0e2aded4edb0	46	// * You should also indicate whether the host supports High Capicity cards,
y_notsu	0:0e2aded4edb0	47	// * and check whether the card is high capacity - i'll also ignore this
y_notsu	0:0e2aded4edb0	48	// *
y_notsu	0:0e2aded4edb0	49	// * SPI Protocol
y_notsu	0:0e2aded4edb0	50	// * ------------
y_notsu	0:0e2aded4edb0	51	// * The SD SPI protocol is based on transactions made up of 8-bit words, with
y_notsu	0:0e2aded4edb0	52	//* the host starting every bus transaction by asserting the CS signal low. The
y_notsu	0:0e2aded4edb0	53	// * card always responds to commands, data blocks and errors.
y_notsu	0:0e2aded4edb0	54	// *
y_notsu	0:0e2aded4edb0	55	// * The protocol supports a CRC, but by default it is off (except for the
y_notsu	0:0e2aded4edb0	56	// * first reset CMD0, where the CRC can just be pre-calculated, and CMD8)
y_notsu	0:0e2aded4edb0	57	// * I'll leave the CRC off I think!
y_notsu	0:0e2aded4edb0	58	// *
y_notsu	0:0e2aded4edb0	59	// * Standard capacity cards have variable data block sizes, whereas High
y_notsu	0:0e2aded4edb0	60	// * Capacity cards fix the size of data block to 512 bytes. I'll therefore
y_notsu	0:0e2aded4edb0	61	// * just always use the Standard Capacity cards with a block size of 512 bytes.
y_notsu	0:0e2aded4edb0	62	// * This is set with CMD16.
y_notsu	0:0e2aded4edb0	63	// *
y_notsu	0:0e2aded4edb0	64	// * You can read and write single blocks (CMD17, CMD25) or multiple blocks
y_notsu	0:0e2aded4edb0	65	// * (CMD18, CMD25). For simplicity, I'll just use single block accesses. When
y_notsu	0:0e2aded4edb0	66	// * the card gets a read command, it responds with a response token, and then
y_notsu	0:0e2aded4edb0	67	// * a data token or an error.
y_notsu	0:0e2aded4edb0	68	// *
y_notsu	0:0e2aded4edb0	69	// * SPI Command Format
y_notsu	0:0e2aded4edb0	70	// * ------------------
y_notsu	0:0e2aded4edb0	71	// * Commands are 6-bytes long, containing the command, 32-bit argument, and CRC.
y_notsu	0:0e2aded4edb0	72	// *
y_notsu	0:0e2aded4edb0	73	// * +---------------+------------+------------+-----------+----------+--------------+
y_notsu	0:0e2aded4edb0	74	// * \| 01 \| cmd[5:0] \| arg[31:24] \| arg[23:16] \| arg[15:8] \| arg[7:0] \| crc[6:0] \| 1 \|
y_notsu	0:0e2aded4edb0	75	// * +---------------+------------+------------+-----------+----------+--------------+
y_notsu	0:0e2aded4edb0	76	// *
y_notsu	0:0e2aded4edb0	77	// * As I'm not using CRC, I can fix that byte to what is needed for CMD0 (0x95)
y_notsu	0:0e2aded4edb0	78	// *
y_notsu	0:0e2aded4edb0	79	// * All Application Specific commands shall be preceded with APP_CMD (CMD55).
y_notsu	0:0e2aded4edb0	80	// *
y_notsu	0:0e2aded4edb0	81	// * SPI Response Format
y_notsu	0:0e2aded4edb0	82	// * -------------------
y_notsu	0:0e2aded4edb0	83	// * The main response format (R1) is a status byte (normally zero). Key flags:
y_notsu	0:0e2aded4edb0	84	// * idle - 1 if the card is in an idle state/initialising
y_notsu	0:0e2aded4edb0	85	// * cmd - 1 if an illegal command code was detected
y_notsu	0:0e2aded4edb0	86	// *
y_notsu	0:0e2aded4edb0	87	// * +-------------------------------------------------+
y_notsu	0:0e2aded4edb0	88	// * R1 \| 0 \| arg \| addr \| seq \| crc \| cmd \| erase \| idle \|
y_notsu	0:0e2aded4edb0	89	// * +-------------------------------------------------+
y_notsu	0:0e2aded4edb0	90	// *
y_notsu	0:0e2aded4edb0	91	// * R1b is the same, except it is followed by a busy signal (zeros) until
y_notsu	0:0e2aded4edb0	92	// * the first non-zero byte when it is ready again.
y_notsu	0:0e2aded4edb0	93	// *
y_notsu	0:0e2aded4edb0	94	// * Data Response Token
y_notsu	0:0e2aded4edb0	95	// * -------------------
y_notsu	0:0e2aded4edb0	96	// * Every data block written to the card is acknowledged by a byte
y_notsu	0:0e2aded4edb0	97	// * response token
y_notsu	0:0e2aded4edb0	98	// *
y_notsu	0:0e2aded4edb0	99	// * +----------------------+
y_notsu	0:0e2aded4edb0	100	// * \| xxx \| 0 \| status \| 1 \|
y_notsu	0:0e2aded4edb0	101	// * +----------------------+
y_notsu	0:0e2aded4edb0	102	// * 010 - OK!
y_notsu	0:0e2aded4edb0	103	// * 101 - CRC Error
y_notsu	0:0e2aded4edb0	104	// * 110 - Write Error
y_notsu	0:0e2aded4edb0	105	// *
y_notsu	0:0e2aded4edb0	106	// * Single Block Read and Write
y_notsu	0:0e2aded4edb0	107	// * ---------------------------
y_notsu	0:0e2aded4edb0	108	// *
y_notsu	0:0e2aded4edb0	109	// * Block transfers have a byte header, followed by the data, followed
y_notsu	0:0e2aded4edb0	110	// * by a 16-bit CRC. In our case, the data will always be 512 bytes.
y_notsu	0:0e2aded4edb0	111	// *
y_notsu	0:0e2aded4edb0	112	// * +------+---------+---------+- - - -+---------+-----------+----------+
y_notsu	0:0e2aded4edb0	113	// * \| 0xFE \| data[0] \| data[1] \| \| data[n] \| crc[15:8] \| crc[7:0] \|
y_notsu	0:0e2aded4edb0	114	// * +------+---------+---------+- - - -+---------+-----------+----------+
y_notsu	0:0e2aded4edb0	115	// */
y_notsu	0:0e2aded4edb0	116	//
y_notsu	0:0e2aded4edb0	117	//*
y_notsu	0:0e2aded4edb0	118	// * Comment: Changes for SDHC support till 32GB
y_notsu	0:0e2aded4edb0	119	// * Name: KB
y_notsu	0:0e2aded4edb0	120	// * Date: 07/24/2010
y_notsu	0:0e2aded4edb0	121	// * Release: 0.1
y_notsu	0:0e2aded4edb0	122	// */
y_notsu	0:0e2aded4edb0	123
y_notsu	0:0e2aded4edb0	124	/* mbed SDFileSystem Library, for providing file access to SD cards
y_notsu	0:0e2aded4edb0	125	* Copyright (c) 2008-2010, sford
y_notsu	0:0e2aded4edb0	126	*
y_notsu	0:0e2aded4edb0	127	* Permission is hereby granted, free of charge, to any person obtaining a copy
y_notsu	0:0e2aded4edb0	128	* of this software and associated documentation files (the "Software"), to deal
y_notsu	0:0e2aded4edb0	129	* in the Software without restriction, including without limitation the rights
y_notsu	0:0e2aded4edb0	130	* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
y_notsu	0:0e2aded4edb0	131	* copies of the Software, and to permit persons to whom the Software is
y_notsu	0:0e2aded4edb0	132	* furnished to do so, subject to the following conditions:
y_notsu	0:0e2aded4edb0	133	*
y_notsu	0:0e2aded4edb0	134	* The above copyright notice and this permission notice shall be included in
y_notsu	0:0e2aded4edb0	135	* all copies or substantial portions of the Software.
y_notsu	0:0e2aded4edb0	136	*
y_notsu	0:0e2aded4edb0	137	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
y_notsu	0:0e2aded4edb0	138	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
y_notsu	0:0e2aded4edb0	139	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
y_notsu	0:0e2aded4edb0	140	* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
y_notsu	0:0e2aded4edb0	141	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
y_notsu	0:0e2aded4edb0	142	* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
y_notsu	0:0e2aded4edb0	143	* THE SOFTWARE.
y_notsu	0:0e2aded4edb0	144	*/
y_notsu	0:0e2aded4edb0	145
y_notsu	0:0e2aded4edb0	146	//* Introduction
y_notsu	0:0e2aded4edb0	147	// * ------------
y_notsu	0:0e2aded4edb0	148	// * SD and MMC cards support a number of interfaces, but common to them all
y_notsu	0:0e2aded4edb0	149	// * is one based on SPI. This is the one I'm implmenting because it means
y_notsu	0:0e2aded4edb0	150	// * it is much more portable even though not so performant, and we already
y_notsu	0:0e2aded4edb0	151	// * have the mbed SPI Interface!
y_notsu	0:0e2aded4edb0	152	// *
y_notsu	0:0e2aded4edb0	153	// * The main reference I'm using is Chapter 7, "SPI Mode" of:
y_notsu	0:0e2aded4edb0	154	// * http://www.sdcard.org/developers/tech/sdcard/pls/Simplified_Physical_Layer_Spec.pdf
y_notsu	0:0e2aded4edb0	155	// *
y_notsu	0:0e2aded4edb0	156	// * SPI Startup
y_notsu	0:0e2aded4edb0	157	// * -----------
y_notsu	0:0e2aded4edb0	158	// * The SD card powers up in SD mode. The SPI interface mode is selected by
y_notsu	0:0e2aded4edb0	159	// * asserting CS low and sending the reset command (CMD0). The card will
y_notsu	0:0e2aded4edb0	160	// * respond with a (R1) response.
y_notsu	0:0e2aded4edb0	161	// *
y_notsu	0:0e2aded4edb0	162	// * CMD8 is optionally sent to determine the voltage range supported, and
y_notsu	0:0e2aded4edb0	163	// * indirectly determine whether it is a version 1.x SD/non-SD card or
y_notsu	0:0e2aded4edb0	164	// * version 2.x. I'll just ignore this for now.
y_notsu	0:0e2aded4edb0	165	// *
y_notsu	0:0e2aded4edb0	166	// * ACMD41 is repeatedly issued to initialise the card, until "in idle"
y_notsu	0:0e2aded4edb0	167	// * (bit 0) of the R1 response goes to '0', indicating it is initialised.
y_notsu	0:0e2aded4edb0	168	// *
y_notsu	0:0e2aded4edb0	169	// * You should also indicate whether the host supports High Capicity cards,
y_notsu	0:0e2aded4edb0	170	// * and check whether the card is high capacity - i'll also ignore this
y_notsu	0:0e2aded4edb0	171	// *
y_notsu	0:0e2aded4edb0	172	// * SPI Protocol
y_notsu	0:0e2aded4edb0	173	// * ------------
y_notsu	0:0e2aded4edb0	174	// * The SD SPI protocol is based on transactions made up of 8-bit words, with
y_notsu	0:0e2aded4edb0	175	//* the host starting every bus transaction by asserting the CS signal low. The
y_notsu	0:0e2aded4edb0	176	// * card always responds to commands, data blocks and errors.
y_notsu	0:0e2aded4edb0	177	// *
y_notsu	0:0e2aded4edb0	178	// * The protocol supports a CRC, but by default it is off (except for the
y_notsu	0:0e2aded4edb0	179	// * first reset CMD0, where the CRC can just be pre-calculated, and CMD8)
y_notsu	0:0e2aded4edb0	180	// * I'll leave the CRC off I think!
y_notsu	0:0e2aded4edb0	181	// *
y_notsu	0:0e2aded4edb0	182	// * Standard capacity cards have variable data block sizes, whereas High
y_notsu	0:0e2aded4edb0	183	// * Capacity cards fix the size of data block to 512 bytes. I'll therefore
y_notsu	0:0e2aded4edb0	184	// * just always use the Standard Capacity cards with a block size of 512 bytes.
y_notsu	0:0e2aded4edb0	185	// * This is set with CMD16.
y_notsu	0:0e2aded4edb0	186	// *
y_notsu	0:0e2aded4edb0	187	// * You can read and write single blocks (CMD17, CMD25) or multiple blocks
y_notsu	0:0e2aded4edb0	188	// * (CMD18, CMD25). For simplicity, I'll just use single block accesses. When
y_notsu	0:0e2aded4edb0	189	// * the card gets a read command, it responds with a response token, and then
y_notsu	0:0e2aded4edb0	190	// * a data token or an error.
y_notsu	0:0e2aded4edb0	191	// *
y_notsu	0:0e2aded4edb0	192	// * SPI Command Format
y_notsu	0:0e2aded4edb0	193	// * ------------------
y_notsu	0:0e2aded4edb0	194	// * Commands are 6-bytes long, containing the command, 32-bit argument, and CRC.
y_notsu	0:0e2aded4edb0	195	// *
y_notsu	0:0e2aded4edb0	196	// * +---------------+------------+------------+-----------+----------+--------------+
y_notsu	0:0e2aded4edb0	197	// * \| 01 \| cmd[5:0] \| arg[31:24] \| arg[23:16] \| arg[15:8] \| arg[7:0] \| crc[6:0] \| 1 \|
y_notsu	0:0e2aded4edb0	198	// * +---------------+------------+------------+-----------+----------+--------------+
y_notsu	0:0e2aded4edb0	199	// *
y_notsu	0:0e2aded4edb0	200	// * As I'm not using CRC, I can fix that byte to what is needed for CMD0 (0x95)
y_notsu	0:0e2aded4edb0	201	// *
y_notsu	0:0e2aded4edb0	202	// * All Application Specific commands shall be preceded with APP_CMD (CMD55).
y_notsu	0:0e2aded4edb0	203	// *
y_notsu	0:0e2aded4edb0	204	// * SPI Response Format
y_notsu	0:0e2aded4edb0	205	// * -------------------
y_notsu	0:0e2aded4edb0	206	// * The main response format (R1) is a status byte (normally zero). Key flags:
y_notsu	0:0e2aded4edb0	207	// * idle - 1 if the card is in an idle state/initialising
y_notsu	0:0e2aded4edb0	208	// * cmd - 1 if an illegal command code was detected
y_notsu	0:0e2aded4edb0	209	// *
y_notsu	0:0e2aded4edb0	210	// * +-------------------------------------------------+
y_notsu	0:0e2aded4edb0	211	// * R1 \| 0 \| arg \| addr \| seq \| crc \| cmd \| erase \| idle \|
y_notsu	0:0e2aded4edb0	212	// * +-------------------------------------------------+
y_notsu	0:0e2aded4edb0	213	// *
y_notsu	0:0e2aded4edb0	214	// * R1b is the same, except it is followed by a busy signal (zeros) until
y_notsu	0:0e2aded4edb0	215	// * the first non-zero byte when it is ready again.
y_notsu	0:0e2aded4edb0	216	// *
y_notsu	0:0e2aded4edb0	217	// * Data Response Token
y_notsu	0:0e2aded4edb0	218	// * -------------------
y_notsu	0:0e2aded4edb0	219	// * Every data block written to the card is acknowledged by a byte
y_notsu	0:0e2aded4edb0	220	// * response token
y_notsu	0:0e2aded4edb0	221	// *
y_notsu	0:0e2aded4edb0	222	// * +----------------------+
y_notsu	0:0e2aded4edb0	223	// * \| xxx \| 0 \| status \| 1 \|
y_notsu	0:0e2aded4edb0	224	// * +----------------------+
y_notsu	0:0e2aded4edb0	225	// * 010 - OK!
y_notsu	0:0e2aded4edb0	226	// * 101 - CRC Error
y_notsu	0:0e2aded4edb0	227	// * 110 - Write Error
y_notsu	0:0e2aded4edb0	228	// *
y_notsu	0:0e2aded4edb0	229	// * Single Block Read and Write
y_notsu	0:0e2aded4edb0	230	// * ---------------------------
y_notsu	0:0e2aded4edb0	231	// *
y_notsu	0:0e2aded4edb0	232	// * Block transfers have a byte header, followed by the data, followed
y_notsu	0:0e2aded4edb0	233	// * by a 16-bit CRC. In our case, the data will always be 512 bytes.
y_notsu	0:0e2aded4edb0	234	// *
y_notsu	0:0e2aded4edb0	235	// * +------+---------+---------+- - - -+---------+-----------+----------+
y_notsu	0:0e2aded4edb0	236	// * \| 0xFE \| data[0] \| data[1] \| \| data[n] \| crc[15:8] \| crc[7:0] \|
y_notsu	0:0e2aded4edb0	237	// * +------+---------+---------+- - - -+---------+-----------+----------+
y_notsu	0:0e2aded4edb0	238	// */
y_notsu	0:0e2aded4edb0	239	//
y_notsu	0:0e2aded4edb0	240	//*
y_notsu	0:0e2aded4edb0	241	// * Comment: Changes for SDHC support till 32GB
y_notsu	0:0e2aded4edb0	242	// * Name: KB
y_notsu	0:0e2aded4edb0	243	// * Date: 07/24/2010
y_notsu	0:0e2aded4edb0	244	// * Release: 0.1
y_notsu	0:0e2aded4edb0	245	// */
y_notsu	0:0e2aded4edb0	246
y_notsu	0:0e2aded4edb0	247	#include "SDHCFileSystem.h"
y_notsu	0:0e2aded4edb0	248
y_notsu	0:0e2aded4edb0	249	#define DEBUG
y_notsu	0:0e2aded4edb0	250	#define SD_COMMAND_TIMEOUT 5000
y_notsu	0:0e2aded4edb0	251
y_notsu	0:0e2aded4edb0	252
y_notsu	0:0e2aded4edb0	253	SDFileSystem::SDFileSystem(PinName mosi, PinName miso, PinName sclk, PinName cs, const char* name) :
y_notsu	0:0e2aded4edb0	254	FATFileSystem(name), _spi(mosi, miso, sclk), _cs(cs) {
y_notsu	0:0e2aded4edb0	255	_cs = 1;
y_notsu	0:0e2aded4edb0	256	}
y_notsu	0:0e2aded4edb0	257
y_notsu	0:0e2aded4edb0	258	#define R1_IDLE_STATE (1 << 0)
y_notsu	0:0e2aded4edb0	259	#define R1_ERASE_RESET (1 << 1)
y_notsu	0:0e2aded4edb0	260	#define R1_ILLEGAL_COMMAND (1 << 2)
y_notsu	0:0e2aded4edb0	261	#define R1_COM_CRC_ERROR (1 << 3)
y_notsu	0:0e2aded4edb0	262	#define R1_ERASE_SEQUENCE_ERROR (1 << 4)
y_notsu	0:0e2aded4edb0	263	#define R1_ADDRESS_ERROR (1 << 5)
y_notsu	0:0e2aded4edb0	264	#define R1_PARAMETER_ERROR (1 << 6)
y_notsu	0:0e2aded4edb0	265
y_notsu	0:0e2aded4edb0	266	// Types
y_notsu	0:0e2aded4edb0	267	// - v1.x Standard Capacity
y_notsu	0:0e2aded4edb0	268	// - v2.x Standard Capacity
y_notsu	0:0e2aded4edb0	269	// - v2.x High Capacity
y_notsu	0:0e2aded4edb0	270	// - Not recognised as an SD Card
y_notsu	0:0e2aded4edb0	271
y_notsu	0:0e2aded4edb0	272	#define SDCARD_FAIL 0
y_notsu	0:0e2aded4edb0	273	#define SDCARD_V1 1
y_notsu	0:0e2aded4edb0	274	#define SDCARD_V2 2
y_notsu	0:0e2aded4edb0	275	#define SDCARD_V2HC 3
y_notsu	0:0e2aded4edb0	276
y_notsu	0:0e2aded4edb0	277	int SDFileSystem::initialise_card() {
y_notsu	0:0e2aded4edb0	278	// Set to 100kHz for initialisation, and clock card with cs = 1
y_notsu	0:0e2aded4edb0	279	_spi.frequency(40000000);
y_notsu	0:0e2aded4edb0	280	_cs = 1;
y_notsu	0:0e2aded4edb0	281	for(int i=0; i<16; i++) {
y_notsu	0:0e2aded4edb0	282	_spi.write(0xFF);
y_notsu	0:0e2aded4edb0	283	}
y_notsu	0:0e2aded4edb0	284
y_notsu	0:0e2aded4edb0	285	// send CMD0, should return with all zeros except IDLE STATE set (bit 0)
y_notsu	0:0e2aded4edb0	286	if(_cmd(0, 0) != R1_IDLE_STATE) {
y_notsu	0:0e2aded4edb0	287	fprintf(stderr, "No disk, or could not put SD card in to SPI idle state\n");
y_notsu	0:0e2aded4edb0	288	return SDCARD_FAIL;
y_notsu	0:0e2aded4edb0	289	}
y_notsu	0:0e2aded4edb0	290
y_notsu	0:0e2aded4edb0	291	// send CMD8 to determine whther it is ver 2.x
y_notsu	0:0e2aded4edb0	292	int r = _cmd8();
y_notsu	0:0e2aded4edb0	293	if(r == R1_IDLE_STATE) {
y_notsu	0:0e2aded4edb0	294	return initialise_card_v2();
y_notsu	0:0e2aded4edb0	295	} else if(r == (R1_IDLE_STATE \| R1_ILLEGAL_COMMAND)) {
y_notsu	0:0e2aded4edb0	296	return initialise_card_v1();
y_notsu	0:0e2aded4edb0	297	} else {
y_notsu	0:0e2aded4edb0	298	fprintf(stderr, "Not in idle state after sending CMD8 (not an SD card?)\n");
y_notsu	0:0e2aded4edb0	299	return SDCARD_FAIL;
y_notsu	0:0e2aded4edb0	300	}
y_notsu	0:0e2aded4edb0	301	}
y_notsu	0:0e2aded4edb0	302
y_notsu	0:0e2aded4edb0	303	int SDFileSystem::initialise_card_v1() {
y_notsu	0:0e2aded4edb0	304	for(int i=0; i<SD_COMMAND_TIMEOUT; i++) {
y_notsu	0:0e2aded4edb0	305	_cmd(55, 0);
y_notsu	0:0e2aded4edb0	306	if(_cmd(41, 0) == 0) {
y_notsu	0:0e2aded4edb0	307	cdv = 512;
y_notsu	0:0e2aded4edb0	308	#ifdef DEBUG
y_notsu	0:0e2aded4edb0	309	printf("\n\rInit: SEDCARD_V1\n\r");
y_notsu	0:0e2aded4edb0	310	#endif
y_notsu	0:0e2aded4edb0	311	return SDCARD_V1;
y_notsu	0:0e2aded4edb0	312	}
y_notsu	0:0e2aded4edb0	313	}
y_notsu	0:0e2aded4edb0	314
y_notsu	0:0e2aded4edb0	315	fprintf(stderr, "Timeout waiting for v1.x card\n");
y_notsu	0:0e2aded4edb0	316	return SDCARD_FAIL;
y_notsu	0:0e2aded4edb0	317	}
y_notsu	0:0e2aded4edb0	318
y_notsu	0:0e2aded4edb0	319	int SDFileSystem::initialise_card_v2() {
y_notsu	0:0e2aded4edb0	320
y_notsu	0:0e2aded4edb0	321	for(int i=0; i<SD_COMMAND_TIMEOUT; i++) {
y_notsu	0:0e2aded4edb0	322	wait_ms(50);
y_notsu	0:0e2aded4edb0	323	_cmd58();
y_notsu	0:0e2aded4edb0	324	_cmd(55, 0);
y_notsu	0:0e2aded4edb0	325	if(_cmd(41, 0x40000000) == 0) {
y_notsu	0:0e2aded4edb0	326	_cmd58();
y_notsu	0:0e2aded4edb0	327	#ifdef DEBUG
y_notsu	0:0e2aded4edb0	328	printf("\n\rInit: SDCARD_V2\n\r");
y_notsu	0:0e2aded4edb0	329	#endif
y_notsu	0:0e2aded4edb0	330	cdv = 1;
y_notsu	0:0e2aded4edb0	331	return SDCARD_V2;
y_notsu	0:0e2aded4edb0	332	}
y_notsu	0:0e2aded4edb0	333	}
y_notsu	0:0e2aded4edb0	334
y_notsu	0:0e2aded4edb0	335	fprintf(stderr, "Timeout waiting for v2.x card\n");
y_notsu	0:0e2aded4edb0	336	return SDCARD_FAIL;
y_notsu	0:0e2aded4edb0	337	}
y_notsu	0:0e2aded4edb0	338
y_notsu	0:0e2aded4edb0	339	int SDFileSystem::disk_initialize() {
y_notsu	0:0e2aded4edb0	340
y_notsu	0:0e2aded4edb0	341	int i = initialise_card();
y_notsu	0:0e2aded4edb0	342	#ifdef DEBUG
y_notsu	0:0e2aded4edb0	343	printf("init card = %d\n", i);
y_notsu	0:0e2aded4edb0	344	#endif
y_notsu	0:0e2aded4edb0	345	_sectors = _sd_sectors();
y_notsu	0:0e2aded4edb0	346
y_notsu	0:0e2aded4edb0	347	// Set block length to 512 (CMD16)
y_notsu	0:0e2aded4edb0	348	if(_cmd(16, 512) != 0) {
y_notsu	0:0e2aded4edb0	349	fprintf(stderr, "Set 512-byte block timed out\n");
y_notsu	0:0e2aded4edb0	350	return 1;
y_notsu	0:0e2aded4edb0	351	}
y_notsu	0:0e2aded4edb0	352
y_notsu	0:0e2aded4edb0	353	_spi.frequency(40000000); // Set to 1MHz for data transfer
y_notsu	0:0e2aded4edb0	354	return 0;
y_notsu	0:0e2aded4edb0	355	}
y_notsu	0:0e2aded4edb0	356
y_notsu	0:0e2aded4edb0	357	int SDFileSystem::disk_write(const char *buffer, int block_number) {
y_notsu	0:0e2aded4edb0	358	// set write address for single block (CMD24)
y_notsu	0:0e2aded4edb0	359	if(_cmd(24, block_number * cdv) != 0) {
y_notsu	0:0e2aded4edb0	360	return 1;
y_notsu	0:0e2aded4edb0	361	}
y_notsu	0:0e2aded4edb0	362
y_notsu	0:0e2aded4edb0	363	// send the data block
y_notsu	0:0e2aded4edb0	364	_write(buffer, 512);
y_notsu	0:0e2aded4edb0	365	return 0;
y_notsu	0:0e2aded4edb0	366	}
y_notsu	0:0e2aded4edb0	367
y_notsu	0:0e2aded4edb0	368	int SDFileSystem::disk_read(char *buffer, int block_number) {
y_notsu	0:0e2aded4edb0	369	// set read address for single block (CMD17)
y_notsu	0:0e2aded4edb0	370	if(_cmd(17, block_number * cdv) != 0) {
y_notsu	0:0e2aded4edb0	371	return 1;
y_notsu	0:0e2aded4edb0	372	}
y_notsu	0:0e2aded4edb0	373
y_notsu	0:0e2aded4edb0	374	// receive the data
y_notsu	0:0e2aded4edb0	375	_read(buffer, 512);
y_notsu	0:0e2aded4edb0	376	return 0;
y_notsu	0:0e2aded4edb0	377	}
y_notsu	0:0e2aded4edb0	378
y_notsu	0:0e2aded4edb0	379	int SDFileSystem::disk_status() { return 0; }
y_notsu	0:0e2aded4edb0	380	int SDFileSystem::disk_sync() { return 0; }
y_notsu	0:0e2aded4edb0	381	int SDFileSystem::disk_sectors() { return _sectors; }
y_notsu	0:0e2aded4edb0	382
y_notsu	0:0e2aded4edb0	383	// PRIVATE FUNCTIONS
y_notsu	0:0e2aded4edb0	384
y_notsu	0:0e2aded4edb0	385	int SDFileSystem::_cmd(int cmd, int arg) {
y_notsu	0:0e2aded4edb0	386	_cs = 0;
y_notsu	0:0e2aded4edb0	387
y_notsu	0:0e2aded4edb0	388	// send a command
y_notsu	0:0e2aded4edb0	389	_spi.write(0x40 \| cmd);
y_notsu	0:0e2aded4edb0	390	_spi.write(arg >> 24);
y_notsu	0:0e2aded4edb0	391	_spi.write(arg >> 16);
y_notsu	0:0e2aded4edb0	392	_spi.write(arg >> 8);
y_notsu	0:0e2aded4edb0	393	_spi.write(arg >> 0);
y_notsu	0:0e2aded4edb0	394	_spi.write(0x95);
y_notsu	0:0e2aded4edb0	395
y_notsu	0:0e2aded4edb0	396	// wait for the repsonse (response[7] == 0)
y_notsu	0:0e2aded4edb0	397	for(int i=0; i<SD_COMMAND_TIMEOUT; i++) {
y_notsu	0:0e2aded4edb0	398	int response = _spi.write(0xFF);
y_notsu	0:0e2aded4edb0	399	if(!(response & 0x80)) {
y_notsu	0:0e2aded4edb0	400	_cs = 1;
y_notsu	0:0e2aded4edb0	401	_spi.write(0xFF);
y_notsu	0:0e2aded4edb0	402	return response;
y_notsu	0:0e2aded4edb0	403	}
y_notsu	0:0e2aded4edb0	404	}
y_notsu	0:0e2aded4edb0	405	_cs = 1;
y_notsu	0:0e2aded4edb0	406	_spi.write(0xFF);
y_notsu	0:0e2aded4edb0	407	return -1; // timeout
y_notsu	0:0e2aded4edb0	408	}
y_notsu	0:0e2aded4edb0	409	int SDFileSystem::_cmdx(int cmd, int arg) {
y_notsu	0:0e2aded4edb0	410	_cs = 0;
y_notsu	0:0e2aded4edb0	411
y_notsu	0:0e2aded4edb0	412	// send a command
y_notsu	0:0e2aded4edb0	413	_spi.write(0x40 \| cmd);
y_notsu	0:0e2aded4edb0	414	_spi.write(arg >> 24);
y_notsu	0:0e2aded4edb0	415	_spi.write(arg >> 16);
y_notsu	0:0e2aded4edb0	416	_spi.write(arg >> 8);
y_notsu	0:0e2aded4edb0	417	_spi.write(arg >> 0);
y_notsu	0:0e2aded4edb0	418	_spi.write(0x95);
y_notsu	0:0e2aded4edb0	419
y_notsu	0:0e2aded4edb0	420	// wait for the repsonse (response[7] == 0)
y_notsu	0:0e2aded4edb0	421	for(int i=0; i<SD_COMMAND_TIMEOUT; i++) {
y_notsu	0:0e2aded4edb0	422	int response = _spi.write(0xFF);
y_notsu	0:0e2aded4edb0	423	if(!(response & 0x80)) {
y_notsu	0:0e2aded4edb0	424	return response;
y_notsu	0:0e2aded4edb0	425	}
y_notsu	0:0e2aded4edb0	426	}
y_notsu	0:0e2aded4edb0	427	_cs = 1;
y_notsu	0:0e2aded4edb0	428	_spi.write(0xFF);
y_notsu	0:0e2aded4edb0	429	return -1; // timeout
y_notsu	0:0e2aded4edb0	430	}
y_notsu	0:0e2aded4edb0	431
y_notsu	0:0e2aded4edb0	432
y_notsu	0:0e2aded4edb0	433	int SDFileSystem::_cmd58() {
y_notsu	0:0e2aded4edb0	434	_cs = 0;
y_notsu	0:0e2aded4edb0	435	int arg = 0;
y_notsu	0:0e2aded4edb0	436
y_notsu	0:0e2aded4edb0	437	// send a command
y_notsu	0:0e2aded4edb0	438	_spi.write(0x40 \| 58);
y_notsu	0:0e2aded4edb0	439	_spi.write(arg >> 24);
y_notsu	0:0e2aded4edb0	440	_spi.write(arg >> 16);
y_notsu	0:0e2aded4edb0	441	_spi.write(arg >> 8);
y_notsu	0:0e2aded4edb0	442	_spi.write(arg >> 0);
y_notsu	0:0e2aded4edb0	443	_spi.write(0x95);
y_notsu	0:0e2aded4edb0	444
y_notsu	0:0e2aded4edb0	445	// wait for the repsonse (response[7] == 0)
y_notsu	0:0e2aded4edb0	446	for(int i=0; i<SD_COMMAND_TIMEOUT; i++) {
y_notsu	0:0e2aded4edb0	447	int response = _spi.write(0xFF);
y_notsu	0:0e2aded4edb0	448	if(!(response & 0x80)) {
y_notsu	0:0e2aded4edb0	449	int ocr = _spi.write(0xFF) << 24;
y_notsu	0:0e2aded4edb0	450	ocr \|= _spi.write(0xFF) << 16;
y_notsu	0:0e2aded4edb0	451	ocr \|= _spi.write(0xFF) << 8;
y_notsu	0:0e2aded4edb0	452	ocr \|= _spi.write(0xFF) << 0;
y_notsu	0:0e2aded4edb0	453	// printf("OCR = 0x%08X\n", ocr);
y_notsu	0:0e2aded4edb0	454	_cs = 1;
y_notsu	0:0e2aded4edb0	455	_spi.write(0xFF);
y_notsu	0:0e2aded4edb0	456	return response;
y_notsu	0:0e2aded4edb0	457	}
y_notsu	0:0e2aded4edb0	458	}
y_notsu	0:0e2aded4edb0	459	_cs = 1;
y_notsu	0:0e2aded4edb0	460	_spi.write(0xFF);
y_notsu	0:0e2aded4edb0	461	return -1; // timeout
y_notsu	0:0e2aded4edb0	462	}
y_notsu	0:0e2aded4edb0	463
y_notsu	0:0e2aded4edb0	464	int SDFileSystem::_cmd8() {
y_notsu	0:0e2aded4edb0	465	_cs = 0;
y_notsu	0:0e2aded4edb0	466
y_notsu	0:0e2aded4edb0	467	// send a command
y_notsu	0:0e2aded4edb0	468	_spi.write(0x40 \| 8); // CMD8
y_notsu	0:0e2aded4edb0	469	_spi.write(0x00); // reserved
y_notsu	0:0e2aded4edb0	470	_spi.write(0x00); // reserved
y_notsu	0:0e2aded4edb0	471	_spi.write(0x01); // 3.3v
y_notsu	0:0e2aded4edb0	472	_spi.write(0xAA); // check pattern
y_notsu	0:0e2aded4edb0	473	_spi.write(0x87); // crc
y_notsu	0:0e2aded4edb0	474
y_notsu	0:0e2aded4edb0	475	// wait for the repsonse (response[7] == 0)
y_notsu	0:0e2aded4edb0	476	for(int i=0; i<SD_COMMAND_TIMEOUT * 1000; i++) {
y_notsu	0:0e2aded4edb0	477	char response[5];
y_notsu	0:0e2aded4edb0	478	response[0] = _spi.write(0xFF);
y_notsu	0:0e2aded4edb0	479	if(!(response[0] & 0x80)) {
y_notsu	0:0e2aded4edb0	480	for(int j=1; j<5; j++) {
y_notsu	0:0e2aded4edb0	481	response[i] = _spi.write(0xFF);
y_notsu	0:0e2aded4edb0	482	}
y_notsu	0:0e2aded4edb0	483	_cs = 1;
y_notsu	0:0e2aded4edb0	484	_spi.write(0xFF);
y_notsu	0:0e2aded4edb0	485	return response[0];
y_notsu	0:0e2aded4edb0	486	}
y_notsu	0:0e2aded4edb0	487	}
y_notsu	0:0e2aded4edb0	488	_cs = 1;
y_notsu	0:0e2aded4edb0	489	_spi.write(0xFF);
y_notsu	0:0e2aded4edb0	490	return -1; // timeout
y_notsu	0:0e2aded4edb0	491	}
y_notsu	0:0e2aded4edb0	492
y_notsu	0:0e2aded4edb0	493	int SDFileSystem::_read(char *buffer, int length) {
y_notsu	0:0e2aded4edb0	494	_cs = 0;
y_notsu	0:0e2aded4edb0	495
y_notsu	0:0e2aded4edb0	496	// read until start byte (0xFF)
y_notsu	0:0e2aded4edb0	497	while(_spi.write(0xFF) != 0xFE);
y_notsu	0:0e2aded4edb0	498
y_notsu	0:0e2aded4edb0	499	// read data
y_notsu	0:0e2aded4edb0	500	for(int i=0; i<length; i++) {
y_notsu	0:0e2aded4edb0	501	buffer[i] = _spi.write(0xFF);
y_notsu	0:0e2aded4edb0	502	}
y_notsu	0:0e2aded4edb0	503	_spi.write(0xFF); // checksum
y_notsu	0:0e2aded4edb0	504	_spi.write(0xFF);
y_notsu	0:0e2aded4edb0	505
y_notsu	0:0e2aded4edb0	506	_cs = 1;
y_notsu	0:0e2aded4edb0	507	_spi.write(0xFF);
y_notsu	0:0e2aded4edb0	508	return 0;
y_notsu	0:0e2aded4edb0	509	}
y_notsu	0:0e2aded4edb0	510
y_notsu	0:0e2aded4edb0	511	int SDFileSystem::_write(const char *buffer, int length) {
y_notsu	0:0e2aded4edb0	512	_cs = 0;
y_notsu	0:0e2aded4edb0	513
y_notsu	0:0e2aded4edb0	514	// indicate start of block
y_notsu	0:0e2aded4edb0	515	_spi.write(0xFE);
y_notsu	0:0e2aded4edb0	516
y_notsu	0:0e2aded4edb0	517	// write the data
y_notsu	0:0e2aded4edb0	518	for(int i=0; i<length; i++) {
y_notsu	0:0e2aded4edb0	519	_spi.write(buffer[i]);
y_notsu	0:0e2aded4edb0	520	}
y_notsu	0:0e2aded4edb0	521
y_notsu	0:0e2aded4edb0	522	// write the checksum
y_notsu	0:0e2aded4edb0	523	_spi.write(0xFF);
y_notsu	0:0e2aded4edb0	524	_spi.write(0xFF);
y_notsu	0:0e2aded4edb0	525
y_notsu	0:0e2aded4edb0	526	// check the repsonse token
y_notsu	0:0e2aded4edb0	527	if((_spi.write(0xFF) & 0x1F) != 0x05) {
y_notsu	0:0e2aded4edb0	528	_cs = 1;
y_notsu	0:0e2aded4edb0	529	_spi.write(0xFF);
y_notsu	0:0e2aded4edb0	530	return 1;
y_notsu	0:0e2aded4edb0	531	}
y_notsu	0:0e2aded4edb0	532
y_notsu	0:0e2aded4edb0	533	// wait for write to finish
y_notsu	0:0e2aded4edb0	534	while(_spi.write(0xFF) == 0);
y_notsu	0:0e2aded4edb0	535
y_notsu	0:0e2aded4edb0	536	_cs = 1;
y_notsu	0:0e2aded4edb0	537	_spi.write(0xFF);
y_notsu	0:0e2aded4edb0	538	return 0;
y_notsu	0:0e2aded4edb0	539	}
y_notsu	0:0e2aded4edb0	540
y_notsu	0:0e2aded4edb0	541	static int ext_bits(char *data, int msb, int lsb) {
y_notsu	0:0e2aded4edb0	542	int bits = 0;
y_notsu	0:0e2aded4edb0	543	int size = 1 + msb - lsb;
y_notsu	0:0e2aded4edb0	544	for(int i=0; i<size; i++) {
y_notsu	0:0e2aded4edb0	545	int position = lsb + i;
y_notsu	0:0e2aded4edb0	546	int byte = 15 - (position >> 3);
y_notsu	0:0e2aded4edb0	547	int bit = position & 0x7;
y_notsu	0:0e2aded4edb0	548	int value = (data[byte] >> bit) & 1;
y_notsu	0:0e2aded4edb0	549	bits \|= value << i;
y_notsu	0:0e2aded4edb0	550	}
y_notsu	0:0e2aded4edb0	551	return bits;
y_notsu	0:0e2aded4edb0	552	}
y_notsu	0:0e2aded4edb0	553
y_notsu	0:0e2aded4edb0	554	int SDFileSystem::_sd_sectors() {
y_notsu	0:0e2aded4edb0	555
y_notsu	0:0e2aded4edb0	556	int c_size, c_size_mult, read_bl_len;
y_notsu	0:0e2aded4edb0	557	int block_len, mult, blocknr, capacity;
y_notsu	0:0e2aded4edb0	558	int blocks, hc_c_size;
y_notsu	0:0e2aded4edb0	559	uint64_t hc_capacity;
y_notsu	0:0e2aded4edb0	560
y_notsu	0:0e2aded4edb0	561	// CMD9, Response R2 (R1 byte + 16-byte block read)
y_notsu	0:0e2aded4edb0	562	if(_cmdx(9, 0) != 0) {
y_notsu	0:0e2aded4edb0	563	fprintf(stderr, "Didn't get a response from the disk\n");
y_notsu	0:0e2aded4edb0	564	return 0;
y_notsu	0:0e2aded4edb0	565	}
y_notsu	0:0e2aded4edb0	566
y_notsu	0:0e2aded4edb0	567	char csd[16];
y_notsu	0:0e2aded4edb0	568	if(_read(csd, 16) != 0) {
y_notsu	0:0e2aded4edb0	569	fprintf(stderr, "Couldn't read csd response from disk\n");
y_notsu	0:0e2aded4edb0	570	return 0;
y_notsu	0:0e2aded4edb0	571	}
y_notsu	0:0e2aded4edb0	572
y_notsu	0:0e2aded4edb0	573	// csd_structure : csd[127:126]
y_notsu	0:0e2aded4edb0	574	// c_size : csd[73:62]
y_notsu	0:0e2aded4edb0	575	// c_size_mult : csd[49:47]
y_notsu	0:0e2aded4edb0	576	// read_bl_len : csd[83:80] - the maximum read block length
y_notsu	0:0e2aded4edb0	577
y_notsu	0:0e2aded4edb0	578	int csd_structure = ext_bits(csd, 127, 126);
y_notsu	0:0e2aded4edb0	579
y_notsu	0:0e2aded4edb0	580	#ifdef DEBUG
y_notsu	0:0e2aded4edb0	581	printf("\n\rCSD_STRUCT = %d\n", csd_structure);
y_notsu	0:0e2aded4edb0	582	#endif
y_notsu	0:0e2aded4edb0	583
y_notsu	0:0e2aded4edb0	584	switch (csd_structure){
y_notsu	0:0e2aded4edb0	585	case 0:
y_notsu	0:0e2aded4edb0	586	cdv = 512;
y_notsu	0:0e2aded4edb0	587	c_size = ext_bits(csd, 73, 62);
y_notsu	0:0e2aded4edb0	588	c_size_mult = ext_bits(csd, 49, 47);
y_notsu	0:0e2aded4edb0	589	read_bl_len = ext_bits(csd, 83, 80);
y_notsu	0:0e2aded4edb0	590
y_notsu	0:0e2aded4edb0	591	block_len = 1 << read_bl_len;
y_notsu	0:0e2aded4edb0	592	mult = 1 << (c_size_mult + 2);
y_notsu	0:0e2aded4edb0	593	blocknr = (c_size + 1) * mult;
y_notsu	0:0e2aded4edb0	594	capacity = blocknr * block_len;
y_notsu	0:0e2aded4edb0	595	blocks = capacity / 512;
y_notsu	0:0e2aded4edb0	596	#ifdef DEBUG
y_notsu	0:0e2aded4edb0	597	printf("\n\rSDCard\n\rc_size: %.4X \n\rcapacity: %.ld \n\rsectors: %d\n\r", c_size, capacity, blocks);
y_notsu	0:0e2aded4edb0	598	#endif
y_notsu	0:0e2aded4edb0	599	break;
y_notsu	0:0e2aded4edb0	600
y_notsu	0:0e2aded4edb0	601	case 1:
y_notsu	0:0e2aded4edb0	602	cdv = 1;
y_notsu	0:0e2aded4edb0	603	hc_c_size = ext_bits(csd, 63, 48);
y_notsu	0:0e2aded4edb0	604	int hc_read_bl_len = ext_bits(csd, 83, 80);
y_notsu	0:0e2aded4edb0	605	hc_capacity = hc_c_size+1;
y_notsu	0:0e2aded4edb0	606	blocks = (hc_c_size+1)*1024;
y_notsu	0:0e2aded4edb0	607	#ifdef DEBUG
y_notsu	0:0e2aded4edb0	608	printf("\n\rSDHC Card \n\rhc_c_size: %.4X \n\rcapacity: %.lld \n\rsectors: %d\n\r", hc_c_size, hc_capacity5121024, blocks);
y_notsu	0:0e2aded4edb0	609	#endif
y_notsu	0:0e2aded4edb0	610	break;
y_notsu	0:0e2aded4edb0	611
y_notsu	0:0e2aded4edb0	612	default:
y_notsu	0:0e2aded4edb0	613	fprintf(stderr, "This disk tastes funny! I only know about type 0 CSD structures\n");
y_notsu	0:0e2aded4edb0	614	return 0;
y_notsu	0:0e2aded4edb0	615	// break;
y_notsu	0:0e2aded4edb0	616	};
y_notsu	0:0e2aded4edb0	617	return blocks;
y_notsu	0:0e2aded4edb0	618	}

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Type:	Program
Mbed OS support:	Mbed 2 deprecated
Created:	21 Jan 2011
Imports:	69
Forks:	0
Commits:	1
Dependents:	0
Dependencies:	2
Followers:	4

SDHCFileSystem.cpp@0:0e2aded4edb0, 2011-01-21 (annotated)

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