--- /dev/null
+##
+## This file is part of the sigrok project.
+##
+## Copyright (C) 2015 Uwe Hermann <uwe@hermann-uwe.de>
+##
+## This program is free software; you can redistribute it and/or modify
+## it under the terms of the GNU General Public License as published by
+## the Free Software Foundation; either version 2 of the License, or
+## (at your option) any later version.
+##
+## This program is distributed in the hope that it will be useful,
+## but WITHOUT ANY WARRANTY; without even the implied warranty of
+## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+## GNU General Public License for more details.
+##
+## You should have received a copy of the GNU General Public License
+## along with this program; if not, write to the Free Software
+## Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+##
+
+# Normal commands (CMD)
+# Unlisted items are 'Reserved' as per SD spec. The 'Unknown' items don't
+# seem to be mentioned in the spec, but aren't marked as reserved either.
+cmd_names = {
+ 0: 'GO_IDLE_STATE',
+ # 1: Reserved
+ 2: 'ALL_SEND_CID',
+ 3: 'SEND_RELATIVE_ADDR',
+ 4: 'SET_DSR',
+ 5: 'IO_SEND_OP_COND', # SDIO-only
+ 6: 'SWITCH_FUNC', # New since spec 1.10
+ 7: 'SELECT/DESELECT_CARD',
+ 8: 'SEND_IF_COND',
+ 9: 'SEND_CSD',
+ 10: 'SEND_CID',
+ 11: 'VOLTAGE_SWITCH',
+ 12: 'STOP_TRANSMISSION',
+ 13: 'SEND_STATUS',
+ # 14: Reserved
+ 15: 'GO_INACTIVE_STATE',
+ 16: 'SET_BLOCKLEN',
+ 17: 'READ_SINGLE_BLOCK',
+ 18: 'READ_MULTIPLE_BLOCK',
+ 19: 'SEND_TUNING_BLOCK',
+ 20: 'SPEED_CLASS_CONTROL',
+ # 21-22: Reserved
+ 23: 'SET_BLOCK_COUNT',
+ 24: 'WRITE_BLOCK',
+ 25: 'WRITE_MULTIPLE_BLOCK',
+ 26: 'Reserved for manufacturer',
+ 27: 'PROGRAM_CSD',
+ 28: 'SET_WRITE_PROT',
+ 29: 'CLR_WRITE_PROT',
+ 30: 'SEND_WRITE_PROT',
+ # 31: Reserved
+ 32: 'ERASE_WR_BLK_START',
+ 33: 'ERASE_WR_BLK_END',
+ 34: 'Reserved for CMD6', # New since spec 1.10
+ 35: 'Reserved for CMD6', # New since spec 1.10
+ 36: 'Reserved for CMD6', # New since spec 1.10
+ 37: 'Reserved for CMD6', # New since spec 1.10
+ 38: 'ERASE',
+ # 39: Reserved
+ 40: 'Reserved for security specification',
+ # 41: Reserved
+ 42: 'LOCK_UNLOCK',
+ # 43-49: Reserved
+ 50: 'Reserved for CMD6', # New since spec 1.10
+ # 51: Reserved
+ 52: 'IO_RW_DIRECT', # SDIO-only
+ 53: 'IO_RW_EXTENDED', # SDIO-only
+ 54: 'Unknown',
+ 55: 'APP_CMD',
+ 56: 'GEN_CMD',
+ 57: 'Reserved for CMD6', # New since spec 1.10
+ # 58-59: Reserved
+ 60: 'Reserved for manufacturer',
+ 61: 'Reserved for manufacturer',
+ 62: 'Reserved for manufacturer',
+ 63: 'Reserved for manufacturer',
+}
+
+# Application-specific commands (ACMD)
+# Unlisted items are 'Reserved' as per SD spec. The 'Unknown' items don't
+# seem to be mentioned in the spec, but aren't marked as reserved either.
+acmd_names = {
+ # 1-5: Reserved
+ 6: 'SET_BUS_WIDTH',
+ # 7-12: Reserved
+ 13: 'SD_STATUS',
+ 14: 'Reserved for Security Application',
+ 15: 'Reserved for Security Application',
+ 16: 'Reserved for Security Application',
+ # 17: Reserved
+ 18: 'Reserved for SD security applications',
+ # 19-21: Reserved
+ 22: 'SEND_NUM_WR_BLOCKS',
+ 23: 'SET_WR_BLK_ERASE_COUNT',
+ # 24: Reserved
+ 25: 'Reserved for SD security applications',
+ 26: 'Reserved for SD security applications',
+ 27: 'Reserved for security specification',
+ 28: 'Reserved for security specification',
+ # 29: Reserved
+ 30: 'Reserved for security specification',
+ 31: 'Reserved for security specification',
+ 32: 'Reserved for security specification',
+ 33: 'Reserved for security specification',
+ 34: 'Reserved for security specification',
+ 35: 'Reserved for security specification',
+ # 36-37: Reserved
+ 38: 'Reserved for SD security applications',
+ # 39-40: Reserved
+ 41: 'SD_SEND_OP_COND',
+ 42: 'SET_CLR_CARD_DETECT',
+ 43: 'Reserved for SD security applications',
+ 44: 'Reserved for SD security applications',
+ 45: 'Reserved for SD security applications',
+ 46: 'Reserved for SD security applications',
+ 47: 'Reserved for SD security applications',
+ 48: 'Reserved for SD security applications',
+ 49: 'Reserved for SD security applications',
+ 50: 'Unknown',
+ 51: 'SEND_SCR',
+ 52: 'Reserved for security specification',
+ 53: 'Reserved for security specification',
+ 54: 'Reserved for security specification',
+ 55: 'Non-existant', # Doesn't exist (equivalent to CMD55)
+ 56: 'Reserved for security specification',
+ 57: 'Reserved for security specification',
+ 58: 'Reserved for security specification',
+ 59: 'Reserved for security specification',
+ 60: 'Unknown',
+ 61: 'Unknown',
+ 62: 'Unknown',
+ 63: 'Unknown',
+}
+
+accepted_voltages = {
+ 0b0001: '2.7-3.6V',
+ 0b0010: 'reserved for low voltage range',
+ 0b0100: 'reserved',
+ 0b1000: 'reserved',
+ # All other values: "not defined".
+}
+
+card_status = {
+ 0: 'Reserved for manufacturer test mode',
+ 1: 'Reserved for manufacturer test mode',
+ 2: 'Reserved for application specific commands',
+ 3: 'AKE_SEQ_ERROR',
+ 4: 'Reserved for SDIO card',
+ 5: 'APP_CMD',
+ 6: 'Unknown',
+ 7: 'Unknown',
+ 8: 'READY_FOR_DATA',
+ 9: 'CURRENT_STATE', # CURRENT_STATE is a 4-bit value (decimal: 0..15).
+ 10: 'CURRENT_STATE',
+ 11: 'CURRENT_STATE',
+ 12: 'CURRENT_STATE',
+ 13: 'ERASE_RESET',
+ 14: 'CARD_ECC_DISABLED',
+ 15: 'WP_ERASE_SKIP',
+ 16: 'CSD_OVERWRITE',
+ 17: 'Reserved for DEFERRED_RESPONSE', # See eSD addendum
+ 18: 'Reserved',
+ 19: 'ERROR',
+ 20: 'CC_ERROR',
+ 21: 'CARD_ECC_FAILED',
+ 22: 'ILLEGAL_COMMAND',
+ 23: 'COM_CRC_ERROR',
+ 24: 'LOCK_UNLOCK_FAILED',
+ 25: 'CARD_IS_LOCKED',
+ 26: 'WP_VIOLATION',
+ 27: 'ERASE_PARAM',
+ 28: 'ERASE_SEQ_ERROR',
+ 29: 'BLOCK_LEN_ERROR',
+ 30: 'ADDRESS_ERROR',
+ 31: 'OUT_OF_RANGE',
+}
+
+sd_status = {
+ # 311:0: Reserved for manufacturer
+ # 391:312: Reserved
+}
--- /dev/null
+##
+## This file is part of the sigrok project.
+##
+## Copyright (C) 2015 Uwe Hermann <uwe@hermann-uwe.de>
+##
+## This program is free software; you can redistribute it and/or modify
+## it under the terms of the GNU General Public License as published by
+## the Free Software Foundation; either version 2 of the License, or
+## (at your option) any later version.
+##
+## This program is distributed in the hope that it will be useful,
+## but WITHOUT ANY WARRANTY; without even the implied warranty of
+## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+## GNU General Public License for more details.
+##
+## You should have received a copy of the GNU General Public License
+## along with this program; if not, write to the Free Software
+## Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+##
+
+import sigrokdecode as srd
+from .lists import *
+
+class Decoder(srd.Decoder):
+ api_version = 2
+ id = 'sdcard_sd'
+ name = 'SD card (SD mode)'
+ longname = 'Secure Digital card (SD mode)'
+ desc = 'Secure Digital card (SD mode) low-level protocol.'
+ license = 'gplv2+'
+ inputs = ['logic']
+ outputs = ['sdcard_sd']
+ channels = (
+ {'id': 'cmd', 'name': 'CMD', 'desc': 'Command'},
+ {'id': 'clk', 'name': 'CLK', 'desc': 'Clock'},
+ )
+ optional_channels = (
+ {'id': 'dat0', 'name': 'DAT0', 'desc': 'Data pin 0'},
+ {'id': 'dat1', 'name': 'DAT1', 'desc': 'Data pin 1'},
+ {'id': 'dat2', 'name': 'DAT2', 'desc': 'Data pin 2'},
+ {'id': 'dat3', 'name': 'DAT3', 'desc': 'Data pin 3'},
+ )
+ annotations = \
+ tuple(('cmd%d' % i, 'CMD%d' % i) for i in range(64)) + \
+ tuple(('acmd%d' % i, 'ACMD%d' % i) for i in range(64)) + ( \
+ ('bits', 'Bits'),
+ ('field-start', 'Start bit'),
+ ('field-transmission', 'Transmission bit'),
+ ('field-cmd', 'Command'),
+ ('field-arg', 'Argument'),
+ ('field-crc', 'CRC'),
+ ('field-end', 'End bit'),
+ ('decoded-bits', 'Decoded bits'),
+ ('decoded-fields', 'Decoded fields'),
+ )
+ annotation_rows = (
+ ('raw-bits', 'Raw bits', (128,)),
+ ('decoded-bits', 'Decoded bits', (135,)),
+ ('decoded-fields', 'Decoded fields', (136,)),
+ ('fields', 'Fields', tuple(range(129, 135))),
+ ('cmd', 'Commands', tuple(range(128))),
+ )
+
+ def __init__(self, **kwargs):
+ self.state = 'GET COMMAND TOKEN'
+ self.token = []
+ self.oldpins = None
+ self.oldclk = 0
+ self.is_acmd = False # Indicates CMD vs. ACMD
+ self.cmd = None
+ self.arg = None
+
+ def start(self):
+ self.out_ann = self.register(srd.OUTPUT_ANN)
+
+ def putbit(self, b, data):
+ self.put(self.token[b][0], self.token[b][1], self.out_ann, [135, data])
+
+ def putt(self, data):
+ self.put(self.token[0][0], self.token[47][1], self.out_ann, data)
+
+ def putt2(self, data):
+ self.put(self.token[47][0], self.token[0][1], self.out_ann, data)
+
+ def putf(self, s, e, data):
+ self.put(self.token[s][0], self.token[e][1], self.out_ann, data)
+
+ def puta(self, s, e, data):
+ self.put(self.token[47 - 8 - e][0], self.token[47 - 8 - s][1],
+ self.out_ann, data)
+
+ def putc(self, cmd, desc):
+ self.putt([cmd, ['%s: %s' % (self.cmd_str, desc), self.cmd_str,
+ self.cmd_str.split(' ')[0]]])
+
+ def putr(self, cmd, desc):
+ self.putt([cmd, ['Reply: %s' % desc]])
+
+ def putr2(self, cmd, desc):
+ self.putt2([cmd, ['Reply: %s' % desc]])
+
+ def reset(self):
+ self.cmd, self.arg = None, None
+ self.token, self.state = [], 'GET COMMAND TOKEN'
+
+ def cmd_name(self, cmd):
+ c = acmd_names if self.is_acmd else cmd_names
+ return c.get(cmd, 'Unknown')
+
+ def get_token_bits(self, cmd, n):
+ # Get a bit, return True if we already got 'n' bits, False otherwise.
+ self.token.append([self.samplenum, self.samplenum, cmd])
+ if len(self.token) > 0:
+ self.token[len(self.token) - 2][1] = self.samplenum
+ if len(self.token) < n:
+ return False
+ self.token[n - 1][1] += self.token[n - 1][0] - self.token[n - 2][0]
+ return True
+
+ def handle_common_token_fields(self):
+ s = self.token
+
+ # Annotations for each individual bit.
+ for bit in range(len(self.token)):
+ self.putf(bit, bit, [128, ['%d' % s[bit][2]]])
+
+ # CMD[47:47]: Start bit (always 0)
+ self.putf(0, 0, [129, ['Start bit', 'Start', 'S']])
+
+ # CMD[46:46]: Transmission bit (1 == host)
+ t = 'host' if s[1][2] == 1 else 'card'
+ self.putf(1, 1, [130, ['Transmission: ' + t, 'T: ' + t, 'T']])
+
+ # CMD[45:40]: Command index (BCD; valid: 0-63)
+ self.cmd = int('0b' + ''.join([str(s[i][2]) for i in range(2, 8)]), 2)
+ c = '%s (%d)' % (self.cmd_name(self.cmd), self.cmd)
+ self.putf(2, 7, [131, ['Command: ' + c, 'Cmd: ' + c,
+ 'CMD%d' % self.cmd, 'Cmd', 'C']])
+
+ # CMD[39:08]: Argument
+ self.putf(8, 39, [132, ['Argument', 'Arg', 'A']])
+
+ # CMD[07:01]: CRC7
+ self.crc = int('0b' + ''.join([str(s[i][2]) for i in range(40, 47)]), 2)
+ self.putf(40, 46, [133, ['CRC: 0x%x' % self.crc, 'CRC', 'C']])
+
+ # CMD[00:00]: End bit (always 1)
+ self.putf(47, 47, [134, ['End bit', 'End', 'E']])
+
+ def get_command_token(self, cmd):
+ # Command tokens (48 bits) are sent serially (MSB-first) by the host
+ # (over the CMD line), either to one SD card or to multiple ones.
+ #
+ # Format:
+ # - Bits[47:47]: Start bit (always 0)
+ # - Bits[46:46]: Transmission bit (1 == host)
+ # - Bits[45:40]: Command index (BCD; valid: 0-63)
+ # - Bits[39:08]: Argument
+ # - Bits[07:01]: CRC7
+ # - Bits[00:00]: End bit (always 1)
+
+ if not self.get_token_bits(cmd, 48):
+ return
+
+ self.handle_common_token_fields()
+
+ # Handle command.
+ s = 'ACMD' if self.is_acmd else 'CMD'
+ self.cmd_str = '%s%d (%s)' % (s, self.cmd, self.cmd_name(self.cmd))
+ if self.cmd in (0, 2, 3, 4, 6, 7, 8, 9, 10, 13, 41, 51, 55):
+ self.state = 'HANDLE CMD%d' % self.cmd
+ else:
+ self.state = 'HANDLE CMD999'
+ self.putc(self.cmd, '%s%d' % (s, self.cmd))
+
+ def handle_cmd0(self):
+ # CMD0 (GO_IDLE_STATE) -> no response
+ self.puta(0, 31, [136, ['Stuff bits', 'Stuff', 'SB', 'S']])
+ self.putc(0, 'Reset all SD cards')
+ self.token, self.state = [], 'GET COMMAND TOKEN'
+
+ def handle_cmd2(self):
+ # CMD2 (ALL_SEND_CID) -> R2
+ self.puta(0, 31, [136, ['Stuff bits', 'Stuff', 'SB', 'S']])
+ self.putc(2, 'Ask card for CID number')
+ self.token, self.state = [], 'GET RESPONSE R2'
+
+ def handle_cmd3(self):
+ # CMD3 (SEND_RELATIVE_ADDR) -> R6
+ self.puta(0, 31, [136, ['Stuff bits', 'Stuff', 'SB', 'S']])
+ self.putc(3, 'Ask card for new relative card address (RCA)')
+ self.token, self.state = [], 'GET RESPONSE R6'
+
+ def handle_cmd6(self):
+ # CMD6 (SWITCH_FUNC) -> R1
+ self.putc(6, 'Switch/check card function')
+ self.token, self.state = [], 'GET RESPONSE R1'
+
+ def handle_cmd7(self):
+ # CMD7 (SELECT/DESELECT_CARD) -> R1b
+ self.putc(7, 'Select / deselect card')
+ self.token, self.state = [], 'GET RESPONSE R6'
+
+ def handle_cmd8(self):
+ # CMD8 (SEND_IF_COND) -> R7
+ self.puta(12, 31, [136, ['Reserved', 'Res', 'R']])
+ self.puta(8, 11, [136, ['Supply voltage', 'Voltage', 'VHS', 'V']])
+ self.puta(0, 7, [136, ['Check pattern', 'Check pat', 'Check', 'C']])
+ self.putc(0, 'Send interface condition to card')
+ self.token, self.state = [], 'GET RESPONSE R7'
+ # TODO: Handle case when card doesn't reply with R7 (no reply at all).
+
+ def handle_cmd9(self):
+ # CMD9 (SEND_CSD) -> R2
+ self.puta(16, 31, [136, ['RCA', 'R']])
+ self.puta(0, 15, [136, ['Stuff bits', 'Stuff', 'SB', 'S']])
+ self.putc(9, 'Send card-specific data (CSD)')
+ self.token, self.state = [], 'GET RESPONSE R2'
+
+ def handle_cmd10(self):
+ # CMD10 (SEND_CID) -> R2
+ self.puta(16, 31, [136, ['RCA', 'R']])
+ self.puta(0, 15, [136, ['Stuff bits', 'Stuff', 'SB', 'S']])
+ self.putc(9, 'Send card identification data (CID)')
+ self.token, self.state = [], 'GET RESPONSE R2'
+
+ def handle_cmd13(self):
+ # CMD13 (SEND_STATUS) -> R1
+ self.puta(16, 31, [136, ['RCA', 'R']])
+ self.puta(0, 15, [136, ['Stuff bits', 'Stuff', 'SB', 'S']])
+ self.putc(13, 'Send card status register')
+ self.token, self.state = [], 'GET RESPONSE R1'
+
+ def handle_cmd16(self):
+ # CMD16 (SET_BLOCKLEN) -> R1
+ self.blocklen = self.arg
+ self.puta(0, 31, [136, ['Block length', 'Blocklen', 'BL', 'B']])
+ self.putc(16, 'Set the block length to %d bytes' % self.blocklen)
+ self.token, self.state = [], 'GET RESPONSE R1'
+
+ def handle_cmd55(self):
+ # CMD55 (APP_CMD) -> R1
+ self.puta(16, 31, [136, ['RCA', 'R']])
+ self.puta(0, 15, [136, ['Stuff bits', 'Stuff', 'SB', 'S']])
+ self.putc(55, 'Next command is an application-specific command')
+ self.is_acmd = True
+ self.token, self.state = [], 'GET RESPONSE R1'
+
+ def handle_acmd6(self):
+ # ACMD6 (SET_BUS_WIDTH) -> R1
+ self.putc(64 + 6, 'Read SD config register (SCR)')
+ self.token, self.state = [], 'GET RESPONSE R1'
+
+ def handle_acmd13(self):
+ # ACMD13 (SD_STATUS) -> R1
+ self.puta(0, 31, [136, ['Stuff bits', 'Stuff', 'SB', 'S']])
+ self.putc(64 + 13, 'Set SD status')
+ self.token, self.state = [], 'GET RESPONSE R1'
+
+ def handle_acmd41(self):
+ # ACMD41 (SD_SEND_OP_COND) -> R3
+ self.puta(0, 23, [136, ['VDD voltage window', 'VDD volt', 'VDD', 'V']])
+ self.puta(24, 24, [136, ['S18R']])
+ self.puta(25, 27, [136, ['Reserved', 'Res', 'R']])
+ self.puta(28, 28, [136, ['XPC']])
+ self.puta(29, 29, [136, ['Reserved for eSD', 'Reserved', 'Res', 'R']])
+ self.puta(30, 30, [136, ['Host capacity support info', 'Host capacity',
+ 'HCS', 'H']])
+ self.puta(31, 31, [136, ['Reserved', 'Res', 'R']])
+ self.putc(64 + 41, 'Send HCS info and activate the card init process')
+ self.token, self.state = [], 'GET RESPONSE R3'
+
+ def handle_acmd51(self):
+ # ACMD51 (SEND_SCR) -> R1
+ self.putc(64 + 51, 'Read SD config register (SCR)')
+ self.token, self.state = [], 'GET RESPONSE R1'
+
+ def handle_cmd999(self):
+ self.token, self.state = [], 'GET RESPONSE R1'
+
+ def handle_acmd999(self):
+ self.token, self.state = [], 'GET RESPONSE R1'
+
+ # Response tokens can have one of four formats (depends on content).
+ # They can have a total length of 48 or 136 bits.
+ # They're sent serially (MSB-first) by the card that the host
+ # addressed previously, or (synchronously) by all connected cards.
+
+ def handle_response_r1(self, cmd):
+ # R1: Normal response command
+ # - Bits[47:47]: Start bit (always 0)
+ # - Bits[46:46]: Transmission bit (0 == card)
+ # - Bits[45:40]: Command index (BCD; valid: 0-63)
+ # - Bits[39:08]: Card status
+ # - Bits[07:01]: CRC7
+ # - Bits[00:00]: End bit (always 1)
+ if not self.get_token_bits(cmd, 48):
+ return
+ self.handle_common_token_fields()
+ self.putr(55, 'R1')
+ self.puta(0, 31, [136, ['Card status', 'Status', 'S']])
+ for i in range(32):
+ self.putbit(8 + i, [card_status[31 - i]])
+ self.token, self.state = [], 'GET COMMAND TOKEN'
+
+ def handle_response_r1b(self, cmd):
+ # R1b: Same as R1 with an optional busy signal (on the data line)
+ if not self.get_token_bits(cmd, 48):
+ return
+ self.handle_common_token_fields()
+ self.puta(0, 31, [136, ['Card status', 'Status', 'S']])
+ self.putr(55, 'R1b')
+ self.token, self.state = [], 'GET COMMAND TOKEN'
+
+ def handle_response_r2(self, cmd):
+ # R2: CID/CSD register
+ # - Bits[135:135]: Start bit (always 0)
+ # - Bits[134:134]: Transmission bit (0 == card)
+ # - Bits[133:128]: Reserved (always 0b111111)
+ # - Bits[127:001]: CID or CSD register including internal CRC7
+ # - Bits[000:000]: End bit (always 1)
+ if not self.get_token_bits(cmd, 136):
+ return
+ # Annotations for each individual bit.
+ for bit in range(len(self.token)):
+ self.putf(bit, bit, [128, ['%d' % self.token[bit][2]]])
+ self.putf(0, 0, [129, ['Start bit', 'Start', 'S']])
+ t = 'host' if self.token[1][2] == 1 else 'card'
+ self.putf(1, 1, [130, ['Transmission: ' + t, 'T: ' + t, 'T']])
+ self.putf(2, 7, [131, ['Reserved', 'Res', 'R']])
+ self.putf(8, 134, [132, ['Argument', 'Arg', 'A']])
+ self.putf(135, 135, [134, ['End bit', 'End', 'E']])
+ self.putf(8, 134, [136, ['CID/CSD register', 'CID/CSD', 'C']])
+ self.putf(0, 135, [55, ['R2']])
+ self.token, self.state = [], 'GET COMMAND TOKEN'
+
+ def handle_response_r3(self, cmd):
+ # R3: OCR register
+ # - Bits[47:47]: Start bit (always 0)
+ # - Bits[46:46]: Transmission bit (0 == card)
+ # - Bits[45:40]: Reserved (always 0b111111)
+ # - Bits[39:08]: OCR register
+ # - Bits[07:01]: Reserved (always 0b111111)
+ # - Bits[00:00]: End bit (always 1)
+ if not self.get_token_bits(cmd, 48):
+ return
+ self.putr(55, 'R3')
+ # Annotations for each individual bit.
+ for bit in range(len(self.token)):
+ self.putf(bit, bit, [128, ['%d' % self.token[bit][2]]])
+ self.putf(0, 0, [129, ['Start bit', 'Start', 'S']])
+ t = 'host' if self.token[1][2] == 1 else 'card'
+ self.putf(1, 1, [130, ['Transmission: ' + t, 'T: ' + t, 'T']])
+ self.putf(2, 7, [131, ['Reserved', 'Res', 'R']])
+ self.putf(8, 39, [132, ['Argument', 'Arg', 'A']])
+ self.putf(40, 46, [133, ['Reserved', 'Res', 'R']])
+ self.putf(47, 47, [134, ['End bit', 'End', 'E']])
+ self.puta(0, 31, [136, ['OCR register', 'OCR reg', 'OCR', 'O']])
+ self.token, self.state = [], 'GET COMMAND TOKEN'
+
+ def handle_response_r6(self, cmd):
+ # R6: Published RCA response
+ # - Bits[47:47]: Start bit (always 0)
+ # - Bits[46:46]: Transmission bit (0 == card)
+ # - Bits[45:40]: Command index (always 0b000011)
+ # - Bits[39:24]: Argument[31:16]: New published RCA of the card
+ # - Bits[23:08]: Argument[15:0]: Card status bits
+ # - Bits[07:01]: CRC7
+ # - Bits[00:00]: End bit (always 1)
+ if not self.get_token_bits(cmd, 48):
+ return
+ self.handle_common_token_fields()
+ self.puta(0, 15, [136, ['Card status bits', 'Status', 'S']])
+ self.puta(16, 31, [136, ['Relative card address', 'RCA', 'R']])
+ self.putr(55, 'R6')
+ self.token, self.state = [], 'GET COMMAND TOKEN'
+
+ def handle_response_r7(self, cmd):
+ # R7: Card interface condition
+ # - Bits[47:47]: Start bit (always 0)
+ # - Bits[46:46]: Transmission bit (0 == card)
+ # - Bits[45:40]: Command index (always 0b001000)
+ # - Bits[39:20]: Reserved bits (all-zero)
+ # - Bits[19:16]: Voltage accepted
+ # - Bits[15:08]: Echo-back of check pattern
+ # - Bits[07:01]: CRC7
+ # - Bits[00:00]: End bit (always 1)
+ if not self.get_token_bits(cmd, 48):
+ return
+ self.handle_common_token_fields()
+
+ self.putr(55, 'R7')
+
+ # Arg[31:12]: Reserved bits (all-zero)
+ self.puta(12, 31, [136, ['Reserved', 'Res', 'R']])
+
+ # Arg[11:08]: Voltage accepted
+ v = ''.join(str(i[2]) for i in self.token[28:32])
+ av = accepted_voltages.get(int('0b' + v, 2), 'Unknown')
+ self.puta(8, 11, [136, ['Voltage accepted: ' + av, 'Voltage', 'Volt', 'V']])
+
+ # Arg[07:00]: Echo-back of check pattern
+ self.puta(0, 7, [136, ['Echo-back of check pattern', 'Echo', 'E']])
+
+ self.token, self.state = [], 'GET COMMAND TOKEN'
+
+ def decode(self, ss, es, data):
+ for (self.samplenum, pins) in data:
+
+ # Ignore identical samples early on (for performance reasons).
+ if self.oldpins == pins:
+ continue
+ self.oldpins, (cmd, clk, dat0, dat1, dat2, dat3) = pins, pins
+
+ # Wait for a rising CLK edge.
+ if not (self.oldclk == 0 and clk == 1):
+ self.oldclk = clk
+ continue
+ self.oldclk = clk
+
+ # State machine.
+ if self.state == 'GET COMMAND TOKEN':
+ if len(self.token) == 0:
+ # Wait for start bit (CMD = 0).
+ if cmd != 0:
+ continue
+ self.get_command_token(cmd)
+ elif self.state.startswith('HANDLE CMD'):
+ # Call the respective handler method for the command.
+ a, cmdstr = 'a' if self.is_acmd else '', self.state[10:].lower()
+ handle_cmd = getattr(self, 'handle_%scmd%s' % (a, cmdstr))
+ handle_cmd()
+ # Leave ACMD mode again after the first command after CMD55.
+ if self.is_acmd and cmdstr not in ('55', '63'):
+ self.is_acmd = False
+ elif self.state.startswith('GET RESPONSE'):
+ if len(self.token) == 0:
+ # Wait for start bit (CMD = 0).
+ if cmd != 0:
+ continue
+ # Call the respective handler method for the response.
+ s = 'handle_response_%s' % self.state[13:].lower()
+ handle_response = getattr(self, s)
+ handle_response(cmd)
projects / libsigrokdecode.git / commitdiff