projects / libsigrokdecode.git / blame
| Commit | Line | Data |
|---|---|---|
| 08c41387 | 1 | ## |
| ada4c3a3 | 2 | ## This file is part of the libsigrokdecode project. |
| 08c41387 UH |
3 | ## |
| 4 | ## Copyright (C) 2015 Uwe Hermann <uwe@hermann-uwe.de> | |
| 5 | ## | |
| 6 | ## This program is free software; you can redistribute it and/or modify | |
| 7 | ## it under the terms of the GNU General Public License as published by | |
| 8 | ## the Free Software Foundation; either version 2 of the License, or | |
| 9 | ## (at your option) any later version. | |
| 10 | ## | |
| 11 | ## This program is distributed in the hope that it will be useful, | |
| 12 | ## but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 | ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 14 | ## GNU General Public License for more details. | |
| 15 | ## | |
| 16 | ## You should have received a copy of the GNU General Public License | |
| 17 | ## along with this program; if not, write to the Free Software | |
| 18 | ## Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
| 19 | ## | |
| 20 | ||
| 21 | import sigrokdecode as srd | |
| ada4c3a3 | 22 | from sdcard import (cmd_names, acmd_names, accepted_voltages, card_status, sd_status) |
| 08c41387 UH |
23 | |
| 24 | class Decoder(srd.Decoder): | |
| 25 | api_version = 2 | |
| 26 | id = 'sdcard_sd' | |
| 27 | name = 'SD card (SD mode)' | |
| 28 | longname = 'Secure Digital card (SD mode)' | |
| 29 | desc = 'Secure Digital card (SD mode) low-level protocol.' | |
| 30 | license = 'gplv2+' | |
| 31 | inputs = ['logic'] | |
| 32 | outputs = ['sdcard_sd'] | |
| 33 | channels = ( | |
| 34 | {'id': 'cmd', 'name': 'CMD', 'desc': 'Command'}, | |
| 35 | {'id': 'clk', 'name': 'CLK', 'desc': 'Clock'}, | |
| 36 | ) | |
| 37 | optional_channels = ( | |
| 38 | {'id': 'dat0', 'name': 'DAT0', 'desc': 'Data pin 0'}, | |
| 39 | {'id': 'dat1', 'name': 'DAT1', 'desc': 'Data pin 1'}, | |
| 40 | {'id': 'dat2', 'name': 'DAT2', 'desc': 'Data pin 2'}, | |
| 41 | {'id': 'dat3', 'name': 'DAT3', 'desc': 'Data pin 3'}, | |
| 42 | ) | |
| 43 | annotations = \ | |
| 44 | tuple(('cmd%d' % i, 'CMD%d' % i) for i in range(64)) + \ | |
| 45 | tuple(('acmd%d' % i, 'ACMD%d' % i) for i in range(64)) + ( \ | |
| 46 | ('bits', 'Bits'), | |
| 47 | ('field-start', 'Start bit'), | |
| 48 | ('field-transmission', 'Transmission bit'), | |
| 49 | ('field-cmd', 'Command'), | |
| 50 | ('field-arg', 'Argument'), | |
| 51 | ('field-crc', 'CRC'), | |
| 52 | ('field-end', 'End bit'), | |
| 53 | ('decoded-bits', 'Decoded bits'), | |
| 54 | ('decoded-fields', 'Decoded fields'), | |
| 55 | ) | |
| 56 | annotation_rows = ( | |
| 57 | ('raw-bits', 'Raw bits', (128,)), | |
| 58 | ('decoded-bits', 'Decoded bits', (135,)), | |
| 59 | ('decoded-fields', 'Decoded fields', (136,)), | |
| 60 | ('fields', 'Fields', tuple(range(129, 135))), | |
| 61 | ('cmd', 'Commands', tuple(range(128))), | |
| 62 | ) | |
| 63 | ||
| 64 | def __init__(self, **kwargs): | |
| 65 | self.state = 'GET COMMAND TOKEN' | |
| 66 | self.token = [] | |
| 67 | self.oldpins = None | |
| 68 | self.oldclk = 0 | |
| 69 | self.is_acmd = False # Indicates CMD vs. ACMD | |
| 70 | self.cmd = None | |
| 71 | self.arg = None | |
| 72 | ||
| 73 | def start(self): | |
| 74 | self.out_ann = self.register(srd.OUTPUT_ANN) | |
| 75 | ||
| 76 | def putbit(self, b, data): | |
| 77 | self.put(self.token[b][0], self.token[b][1], self.out_ann, [135, data]) | |
| 78 | ||
| 79 | def putt(self, data): | |
| 80 | self.put(self.token[0][0], self.token[47][1], self.out_ann, data) | |
| 81 | ||
| 82 | def putt2(self, data): | |
| 83 | self.put(self.token[47][0], self.token[0][1], self.out_ann, data) | |
| 84 | ||
| 85 | def putf(self, s, e, data): | |
| 86 | self.put(self.token[s][0], self.token[e][1], self.out_ann, data) | |
| 87 | ||
| 88 | def puta(self, s, e, data): | |
| 89 | self.put(self.token[47 - 8 - e][0], self.token[47 - 8 - s][1], | |
| 90 | self.out_ann, data) | |
| 91 | ||
| 92 | def putc(self, cmd, desc): | |
| 93 | self.putt([cmd, ['%s: %s' % (self.cmd_str, desc), self.cmd_str, | |
| 94 | self.cmd_str.split(' ')[0]]]) | |
| 95 | ||
| 96 | def putr(self, cmd, desc): | |
| 97 | self.putt([cmd, ['Reply: %s' % desc]]) | |
| 98 | ||
| 99 | def putr2(self, cmd, desc): | |
| 100 | self.putt2([cmd, ['Reply: %s' % desc]]) | |
| 101 | ||
| 102 | def reset(self): | |
| 103 | self.cmd, self.arg = None, None | |
| 104 | self.token, self.state = [], 'GET COMMAND TOKEN' | |
| 105 | ||
| 106 | def cmd_name(self, cmd): | |
| 107 | c = acmd_names if self.is_acmd else cmd_names | |
| 108 | return c.get(cmd, 'Unknown') | |
| 109 | ||
| 110 | def get_token_bits(self, cmd, n): | |
| 111 | # Get a bit, return True if we already got 'n' bits, False otherwise. | |
| 112 | self.token.append([self.samplenum, self.samplenum, cmd]) | |
| 113 | if len(self.token) > 0: | |
| 114 | self.token[len(self.token) - 2][1] = self.samplenum | |
| 115 | if len(self.token) < n: | |
| 116 | return False | |
| 117 | self.token[n - 1][1] += self.token[n - 1][0] - self.token[n - 2][0] | |
| 118 | return True | |
| 119 | ||
| 120 | def handle_common_token_fields(self): | |
| 121 | s = self.token | |
| 122 | ||
| 123 | # Annotations for each individual bit. | |
| 124 | for bit in range(len(self.token)): | |
| 125 | self.putf(bit, bit, [128, ['%d' % s[bit][2]]]) | |
| 126 | ||
| 127 | # CMD[47:47]: Start bit (always 0) | |
| 128 | self.putf(0, 0, [129, ['Start bit', 'Start', 'S']]) | |
| 129 | ||
| 130 | # CMD[46:46]: Transmission bit (1 == host) | |
| 131 | t = 'host' if s[1][2] == 1 else 'card' | |
| 132 | self.putf(1, 1, [130, ['Transmission: ' + t, 'T: ' + t, 'T']]) | |
| 133 | ||
| 134 | # CMD[45:40]: Command index (BCD; valid: 0-63) | |
| 135 | self.cmd = int('0b' + ''.join([str(s[i][2]) for i in range(2, 8)]), 2) | |
| 136 | c = '%s (%d)' % (self.cmd_name(self.cmd), self.cmd) | |
| 137 | self.putf(2, 7, [131, ['Command: ' + c, 'Cmd: ' + c, | |
| 138 | 'CMD%d' % self.cmd, 'Cmd', 'C']]) | |
| 139 | ||
| 140 | # CMD[39:08]: Argument | |
| 141 | self.putf(8, 39, [132, ['Argument', 'Arg', 'A']]) | |
| 142 | ||
| 143 | # CMD[07:01]: CRC7 | |
| 144 | self.crc = int('0b' + ''.join([str(s[i][2]) for i in range(40, 47)]), 2) | |
| 145 | self.putf(40, 46, [133, ['CRC: 0x%x' % self.crc, 'CRC', 'C']]) | |
| 146 | ||
| 147 | # CMD[00:00]: End bit (always 1) | |
| 148 | self.putf(47, 47, [134, ['End bit', 'End', 'E']]) | |
| 149 | ||
| 150 | def get_command_token(self, cmd): | |
| 151 | # Command tokens (48 bits) are sent serially (MSB-first) by the host | |
| 152 | # (over the CMD line), either to one SD card or to multiple ones. | |
| 153 | # | |
| 154 | # Format: | |
| 155 | # - Bits[47:47]: Start bit (always 0) | |
| 156 | # - Bits[46:46]: Transmission bit (1 == host) | |
| 157 | # - Bits[45:40]: Command index (BCD; valid: 0-63) | |
| 158 | # - Bits[39:08]: Argument | |
| 159 | # - Bits[07:01]: CRC7 | |
| 160 | # - Bits[00:00]: End bit (always 1) | |
| 161 | ||
| 162 | if not self.get_token_bits(cmd, 48): | |
| 163 | return | |
| 164 | ||
| 165 | self.handle_common_token_fields() | |
| 166 | ||
| 167 | # Handle command. | |
| 168 | s = 'ACMD' if self.is_acmd else 'CMD' | |
| 169 | self.cmd_str = '%s%d (%s)' % (s, self.cmd, self.cmd_name(self.cmd)) | |
| 170 | if self.cmd in (0, 2, 3, 4, 6, 7, 8, 9, 10, 13, 41, 51, 55): | |
| 171 | self.state = 'HANDLE CMD%d' % self.cmd | |
| 172 | else: | |
| 173 | self.state = 'HANDLE CMD999' | |
| 174 | self.putc(self.cmd, '%s%d' % (s, self.cmd)) | |
| 175 | ||
| 176 | def handle_cmd0(self): | |
| 177 | # CMD0 (GO_IDLE_STATE) -> no response | |
| 178 | self.puta(0, 31, [136, ['Stuff bits', 'Stuff', 'SB', 'S']]) | |
| 179 | self.putc(0, 'Reset all SD cards') | |
| 180 | self.token, self.state = [], 'GET COMMAND TOKEN' | |
| 181 | ||
| 182 | def handle_cmd2(self): | |
| 183 | # CMD2 (ALL_SEND_CID) -> R2 | |
| 184 | self.puta(0, 31, [136, ['Stuff bits', 'Stuff', 'SB', 'S']]) | |
| 185 | self.putc(2, 'Ask card for CID number') | |
| 186 | self.token, self.state = [], 'GET RESPONSE R2' | |
| 187 | ||
| 188 | def handle_cmd3(self): | |
| 189 | # CMD3 (SEND_RELATIVE_ADDR) -> R6 | |
| 190 | self.puta(0, 31, [136, ['Stuff bits', 'Stuff', 'SB', 'S']]) | |
| 191 | self.putc(3, 'Ask card for new relative card address (RCA)') | |
| 192 | self.token, self.state = [], 'GET RESPONSE R6' | |
| 193 | ||
| 194 | def handle_cmd6(self): | |
| 195 | # CMD6 (SWITCH_FUNC) -> R1 | |
| 196 | self.putc(6, 'Switch/check card function') | |
| 197 | self.token, self.state = [], 'GET RESPONSE R1' | |
| 198 | ||
| 199 | def handle_cmd7(self): | |
| 200 | # CMD7 (SELECT/DESELECT_CARD) -> R1b | |
| 201 | self.putc(7, 'Select / deselect card') | |
| 202 | self.token, self.state = [], 'GET RESPONSE R6' | |
| 203 | ||
| 204 | def handle_cmd8(self): | |
| 205 | # CMD8 (SEND_IF_COND) -> R7 | |
| 206 | self.puta(12, 31, [136, ['Reserved', 'Res', 'R']]) | |
| 207 | self.puta(8, 11, [136, ['Supply voltage', 'Voltage', 'VHS', 'V']]) | |
| 208 | self.puta(0, 7, [136, ['Check pattern', 'Check pat', 'Check', 'C']]) | |
| 209 | self.putc(0, 'Send interface condition to card') | |
| 210 | self.token, self.state = [], 'GET RESPONSE R7' | |
| 211 | # TODO: Handle case when card doesn't reply with R7 (no reply at all). | |
| 212 | ||
| 213 | def handle_cmd9(self): | |
| 214 | # CMD9 (SEND_CSD) -> R2 | |
| 215 | self.puta(16, 31, [136, ['RCA', 'R']]) | |
| 216 | self.puta(0, 15, [136, ['Stuff bits', 'Stuff', 'SB', 'S']]) | |
| 217 | self.putc(9, 'Send card-specific data (CSD)') | |
| 218 | self.token, self.state = [], 'GET RESPONSE R2' | |
| 219 | ||
| 220 | def handle_cmd10(self): | |
| 221 | # CMD10 (SEND_CID) -> R2 | |
| 222 | self.puta(16, 31, [136, ['RCA', 'R']]) | |
| 223 | self.puta(0, 15, [136, ['Stuff bits', 'Stuff', 'SB', 'S']]) | |
| 224 | self.putc(9, 'Send card identification data (CID)') | |
| 225 | self.token, self.state = [], 'GET RESPONSE R2' | |
| 226 | ||
| 227 | def handle_cmd13(self): | |
| 228 | # CMD13 (SEND_STATUS) -> R1 | |
| 229 | self.puta(16, 31, [136, ['RCA', 'R']]) | |
| 230 | self.puta(0, 15, [136, ['Stuff bits', 'Stuff', 'SB', 'S']]) | |
| 231 | self.putc(13, 'Send card status register') | |
| 232 | self.token, self.state = [], 'GET RESPONSE R1' | |
| 233 | ||
| 234 | def handle_cmd16(self): | |
| 235 | # CMD16 (SET_BLOCKLEN) -> R1 | |
| 236 | self.blocklen = self.arg | |
| 237 | self.puta(0, 31, [136, ['Block length', 'Blocklen', 'BL', 'B']]) | |
| 238 | self.putc(16, 'Set the block length to %d bytes' % self.blocklen) | |
| 239 | self.token, self.state = [], 'GET RESPONSE R1' | |
| 240 | ||
| 241 | def handle_cmd55(self): | |
| 242 | # CMD55 (APP_CMD) -> R1 | |
| 243 | self.puta(16, 31, [136, ['RCA', 'R']]) | |
| 244 | self.puta(0, 15, [136, ['Stuff bits', 'Stuff', 'SB', 'S']]) | |
| 245 | self.putc(55, 'Next command is an application-specific command') | |
| 246 | self.is_acmd = True | |
| 247 | self.token, self.state = [], 'GET RESPONSE R1' | |
| 248 | ||
| 249 | def handle_acmd6(self): | |
| 250 | # ACMD6 (SET_BUS_WIDTH) -> R1 | |
| 251 | self.putc(64 + 6, 'Read SD config register (SCR)') | |
| 252 | self.token, self.state = [], 'GET RESPONSE R1' | |
| 253 | ||
| 254 | def handle_acmd13(self): | |
| 255 | # ACMD13 (SD_STATUS) -> R1 | |
| 256 | self.puta(0, 31, [136, ['Stuff bits', 'Stuff', 'SB', 'S']]) | |
| 257 | self.putc(64 + 13, 'Set SD status') | |
| 258 | self.token, self.state = [], 'GET RESPONSE R1' | |
| 259 | ||
| 260 | def handle_acmd41(self): | |
| 261 | # ACMD41 (SD_SEND_OP_COND) -> R3 | |
| 262 | self.puta(0, 23, [136, ['VDD voltage window', 'VDD volt', 'VDD', 'V']]) | |
| 263 | self.puta(24, 24, [136, ['S18R']]) | |
| 264 | self.puta(25, 27, [136, ['Reserved', 'Res', 'R']]) | |
| 265 | self.puta(28, 28, [136, ['XPC']]) | |
| 266 | self.puta(29, 29, [136, ['Reserved for eSD', 'Reserved', 'Res', 'R']]) | |
| 267 | self.puta(30, 30, [136, ['Host capacity support info', 'Host capacity', | |
| 268 | 'HCS', 'H']]) | |
| 269 | self.puta(31, 31, [136, ['Reserved', 'Res', 'R']]) | |
| 270 | self.putc(64 + 41, 'Send HCS info and activate the card init process') | |
| 271 | self.token, self.state = [], 'GET RESPONSE R3' | |
| 272 | ||
| 273 | def handle_acmd51(self): | |
| 274 | # ACMD51 (SEND_SCR) -> R1 | |
| 275 | self.putc(64 + 51, 'Read SD config register (SCR)') | |
| 276 | self.token, self.state = [], 'GET RESPONSE R1' | |
| 277 | ||
| 278 | def handle_cmd999(self): | |
| 279 | self.token, self.state = [], 'GET RESPONSE R1' | |
| 280 | ||
| 281 | def handle_acmd999(self): | |
| 282 | self.token, self.state = [], 'GET RESPONSE R1' | |
| 283 | ||
| 284 | # Response tokens can have one of four formats (depends on content). | |
| 285 | # They can have a total length of 48 or 136 bits. | |
| 286 | # They're sent serially (MSB-first) by the card that the host | |
| 287 | # addressed previously, or (synchronously) by all connected cards. | |
| 288 | ||
| 289 | def handle_response_r1(self, cmd): | |
| 290 | # R1: Normal response command | |
| 291 | # - Bits[47:47]: Start bit (always 0) | |
| 292 | # - Bits[46:46]: Transmission bit (0 == card) | |
| 293 | # - Bits[45:40]: Command index (BCD; valid: 0-63) | |
| 294 | # - Bits[39:08]: Card status | |
| 295 | # - Bits[07:01]: CRC7 | |
| 296 | # - Bits[00:00]: End bit (always 1) | |
| 297 | if not self.get_token_bits(cmd, 48): | |
| 298 | return | |
| 299 | self.handle_common_token_fields() | |
| 300 | self.putr(55, 'R1') | |
| 301 | self.puta(0, 31, [136, ['Card status', 'Status', 'S']]) | |
| 302 | for i in range(32): | |
| 303 | self.putbit(8 + i, [card_status[31 - i]]) | |
| 304 | self.token, self.state = [], 'GET COMMAND TOKEN' | |
| 305 | ||
| 306 | def handle_response_r1b(self, cmd): | |
| 307 | # R1b: Same as R1 with an optional busy signal (on the data line) | |
| 308 | if not self.get_token_bits(cmd, 48): | |
| 309 | return | |
| 310 | self.handle_common_token_fields() | |
| 311 | self.puta(0, 31, [136, ['Card status', 'Status', 'S']]) | |
| 312 | self.putr(55, 'R1b') | |
| 313 | self.token, self.state = [], 'GET COMMAND TOKEN' | |
| 314 | ||
| 315 | def handle_response_r2(self, cmd): | |
| 316 | # R2: CID/CSD register | |
| 317 | # - Bits[135:135]: Start bit (always 0) | |
| 318 | # - Bits[134:134]: Transmission bit (0 == card) | |
| 319 | # - Bits[133:128]: Reserved (always 0b111111) | |
| 320 | # - Bits[127:001]: CID or CSD register including internal CRC7 | |
| 321 | # - Bits[000:000]: End bit (always 1) | |
| 322 | if not self.get_token_bits(cmd, 136): | |
| 323 | return | |
| 324 | # Annotations for each individual bit. | |
| 325 | for bit in range(len(self.token)): | |
| 326 | self.putf(bit, bit, [128, ['%d' % self.token[bit][2]]]) | |
| 327 | self.putf(0, 0, [129, ['Start bit', 'Start', 'S']]) | |
| 328 | t = 'host' if self.token[1][2] == 1 else 'card' | |
| 329 | self.putf(1, 1, [130, ['Transmission: ' + t, 'T: ' + t, 'T']]) | |
| 330 | self.putf(2, 7, [131, ['Reserved', 'Res', 'R']]) | |
| 331 | self.putf(8, 134, [132, ['Argument', 'Arg', 'A']]) | |
| 332 | self.putf(135, 135, [134, ['End bit', 'End', 'E']]) | |
| 333 | self.putf(8, 134, [136, ['CID/CSD register', 'CID/CSD', 'C']]) | |
| 334 | self.putf(0, 135, [55, ['R2']]) | |
| 335 | self.token, self.state = [], 'GET COMMAND TOKEN' | |
| 336 | ||
| 337 | def handle_response_r3(self, cmd): | |
| 338 | # R3: OCR register | |
| 339 | # - Bits[47:47]: Start bit (always 0) | |
| 340 | # - Bits[46:46]: Transmission bit (0 == card) | |
| 341 | # - Bits[45:40]: Reserved (always 0b111111) | |
| 342 | # - Bits[39:08]: OCR register | |
| 343 | # - Bits[07:01]: Reserved (always 0b111111) | |
| 344 | # - Bits[00:00]: End bit (always 1) | |
| 345 | if not self.get_token_bits(cmd, 48): | |
| 346 | return | |
| 347 | self.putr(55, 'R3') | |
| 348 | # Annotations for each individual bit. | |
| 349 | for bit in range(len(self.token)): | |
| 350 | self.putf(bit, bit, [128, ['%d' % self.token[bit][2]]]) | |
| 351 | self.putf(0, 0, [129, ['Start bit', 'Start', 'S']]) | |
| 352 | t = 'host' if self.token[1][2] == 1 else 'card' | |
| 353 | self.putf(1, 1, [130, ['Transmission: ' + t, 'T: ' + t, 'T']]) | |
| 354 | self.putf(2, 7, [131, ['Reserved', 'Res', 'R']]) | |
| 355 | self.putf(8, 39, [132, ['Argument', 'Arg', 'A']]) | |
| 356 | self.putf(40, 46, [133, ['Reserved', 'Res', 'R']]) | |
| 357 | self.putf(47, 47, [134, ['End bit', 'End', 'E']]) | |
| 358 | self.puta(0, 31, [136, ['OCR register', 'OCR reg', 'OCR', 'O']]) | |
| 359 | self.token, self.state = [], 'GET COMMAND TOKEN' | |
| 360 | ||
| 361 | def handle_response_r6(self, cmd): | |
| 362 | # R6: Published RCA response | |
| 363 | # - Bits[47:47]: Start bit (always 0) | |
| 364 | # - Bits[46:46]: Transmission bit (0 == card) | |
| 365 | # - Bits[45:40]: Command index (always 0b000011) | |
| 366 | # - Bits[39:24]: Argument[31:16]: New published RCA of the card | |
| 367 | # - Bits[23:08]: Argument[15:0]: Card status bits | |
| 368 | # - Bits[07:01]: CRC7 | |
| 369 | # - Bits[00:00]: End bit (always 1) | |
| 370 | if not self.get_token_bits(cmd, 48): | |
| 371 | return | |
| 372 | self.handle_common_token_fields() | |
| 373 | self.puta(0, 15, [136, ['Card status bits', 'Status', 'S']]) | |
| 374 | self.puta(16, 31, [136, ['Relative card address', 'RCA', 'R']]) | |
| 375 | self.putr(55, 'R6') | |
| 376 | self.token, self.state = [], 'GET COMMAND TOKEN' | |
| 377 | ||
| 378 | def handle_response_r7(self, cmd): | |
| 379 | # R7: Card interface condition | |
| 380 | # - Bits[47:47]: Start bit (always 0) | |
| 381 | # - Bits[46:46]: Transmission bit (0 == card) | |
| 382 | # - Bits[45:40]: Command index (always 0b001000) | |
| 383 | # - Bits[39:20]: Reserved bits (all-zero) | |
| 384 | # - Bits[19:16]: Voltage accepted | |
| 385 | # - Bits[15:08]: Echo-back of check pattern | |
| 386 | # - Bits[07:01]: CRC7 | |
| 387 | # - Bits[00:00]: End bit (always 1) | |
| 388 | if not self.get_token_bits(cmd, 48): | |
| 389 | return | |
| 390 | self.handle_common_token_fields() | |
| 391 | ||
| 392 | self.putr(55, 'R7') | |
| 393 | ||
| 394 | # Arg[31:12]: Reserved bits (all-zero) | |
| 395 | self.puta(12, 31, [136, ['Reserved', 'Res', 'R']]) | |
| 396 | ||
| 397 | # Arg[11:08]: Voltage accepted | |
| 398 | v = ''.join(str(i[2]) for i in self.token[28:32]) | |
| 399 | av = accepted_voltages.get(int('0b' + v, 2), 'Unknown') | |
| 400 | self.puta(8, 11, [136, ['Voltage accepted: ' + av, 'Voltage', 'Volt', 'V']]) | |
| 401 | ||
| 402 | # Arg[07:00]: Echo-back of check pattern | |
| 403 | self.puta(0, 7, [136, ['Echo-back of check pattern', 'Echo', 'E']]) | |
| 404 | ||
| 405 | self.token, self.state = [], 'GET COMMAND TOKEN' | |
| 406 | ||
| 407 | def decode(self, ss, es, data): | |
| 408 | for (self.samplenum, pins) in data: | |
| 409 | ||
| 410 | # Ignore identical samples early on (for performance reasons). | |
| 411 | if self.oldpins == pins: | |
| 412 | continue | |
| 413 | self.oldpins, (cmd, clk, dat0, dat1, dat2, dat3) = pins, pins | |
| 414 | ||
| 415 | # Wait for a rising CLK edge. | |
| 416 | if not (self.oldclk == 0 and clk == 1): | |
| 417 | self.oldclk = clk | |
| 418 | continue | |
| 419 | self.oldclk = clk | |
| 420 | ||
| 421 | # State machine. | |
| 422 | if self.state == 'GET COMMAND TOKEN': | |
| 423 | if len(self.token) == 0: | |
| 424 | # Wait for start bit (CMD = 0). | |
| 425 | if cmd != 0: | |
| 426 | continue | |
| 427 | self.get_command_token(cmd) | |
| 428 | elif self.state.startswith('HANDLE CMD'): | |
| 429 | # Call the respective handler method for the command. | |
| 430 | a, cmdstr = 'a' if self.is_acmd else '', self.state[10:].lower() | |
| 431 | handle_cmd = getattr(self, 'handle_%scmd%s' % (a, cmdstr)) | |
| 432 | handle_cmd() | |
| 433 | # Leave ACMD mode again after the first command after CMD55. | |
| 434 | if self.is_acmd and cmdstr not in ('55', '63'): | |
| 435 | self.is_acmd = False | |
| 436 | elif self.state.startswith('GET RESPONSE'): | |
| 437 | if len(self.token) == 0: | |
| 438 | # Wait for start bit (CMD = 0). | |
| 439 | if cmd != 0: | |
| 440 | continue | |
| 441 | # Call the respective handler method for the response. | |
| 442 | s = 'handle_response_%s' % self.state[13:].lower() | |
| 443 | handle_response = getattr(self, s) | |
| 444 | handle_response(cmd) |