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1 | ## | |
2 | ## This file is part of the libsigrokdecode project. | |
3 | ## | |
4 | ## Copyright (C) 2014 SÅ‚awek Piotrowski <sentinel@atteo.org> | |
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, see <http://www.gnu.org/licenses/>. | |
18 | ## | |
19 | ||
20 | import sigrokdecode as srd | |
21 | ||
22 | class Decoder(srd.Decoder): | |
23 | api_version = 2 | |
24 | id = 'rfm12' | |
25 | name = 'RFM12' | |
26 | longname = 'RFM12 control protocol' | |
27 | desc = 'HopeRF RFM12 wireless transceiver control protocol.' | |
28 | license = 'gplv2+' | |
29 | inputs = ['spi'] | |
30 | outputs = ['rfm12'] | |
31 | annotations = ( | |
32 | ('cmd', 'Command'), | |
33 | ('params', 'Command parameters'), | |
34 | ('disabled', 'Disabled bits'), | |
35 | ('return', 'Returned values'), | |
36 | ('disabled_return', 'Disabled returned values'), | |
37 | ('interpretation', 'Interpretation'), | |
38 | ) | |
39 | annotation_rows = ( | |
40 | ('commands', 'Commands', (0, 1, 2)), | |
41 | ('return', 'Return', (3, 4)), | |
42 | ('interpretation', 'Interpretation', (5,)), | |
43 | ) | |
44 | ||
45 | def __init__(self): | |
46 | self.mosi_bytes, self.miso_bytes = [], [] | |
47 | self.mosi_bits, self.miso_bits = [], [] | |
48 | self.row_pos = [0, 0, 0] | |
49 | ||
50 | self.ann_to_row = [0, 0, 0, 1, 1, 2] | |
51 | ||
52 | # Initialize with Power-On-Reset values. | |
53 | self.last_status = [0x00, 0x00] | |
54 | self.last_config = 0x08 | |
55 | self.last_power = 0x08 | |
56 | self.last_freq = 0x680 | |
57 | self.last_data_rate = 0x23 | |
58 | self.last_fifo_and_reset = 0x80 | |
59 | self.last_afc = 0xF7 | |
60 | self.last_transceiver = 0x00 | |
61 | self.last_pll = 0x77 | |
62 | ||
63 | def advance_ann(self, ann, length): | |
64 | row = self.ann_to_row[ann] | |
65 | self.row_pos[row] += length | |
66 | ||
67 | def putx(self, ann, length, description): | |
68 | if not isinstance(description, list): | |
69 | description = [description] | |
70 | row = self.ann_to_row[ann] | |
71 | bit = self.row_pos[row] | |
72 | self.put(self.mosi_bits[bit][1], self.mosi_bits[bit + length - 1][2], | |
73 | self.out_ann, [ann, description]) | |
74 | bit += length | |
75 | self.row_pos[row] = bit | |
76 | ||
77 | def describe_bits(self, data, names): | |
78 | i = 0x01 << len(names) - 1 | |
79 | bit = 0 | |
80 | while i != 0: | |
81 | if names[bit] != '': | |
82 | self.putx(1 if (data & i) else 2, 1, names[bit]) | |
83 | i >>= 1 | |
84 | bit += 1 | |
85 | ||
86 | def describe_return_bits(self, data, names): | |
87 | i = 0x01 << len(names) - 1 | |
88 | bit = 0 | |
89 | while i != 0: | |
90 | if names[bit] != '': | |
91 | self.putx(3 if (data & i) else 4, 1, names[bit]) | |
92 | else: | |
93 | self.advance_ann(3, 1) | |
94 | i >>= 1 | |
95 | bit += 1 | |
96 | ||
97 | def describe_changed_bits(self, data, old_data, names): | |
98 | changes = data ^ old_data | |
99 | i = 0x01 << (len(names) - 1) | |
100 | bit = 0 | |
101 | while i != 0: | |
102 | if names[bit] != '' and changes & i: | |
103 | s = ['+', 'Turning on'] if (data & i) else ['-', 'Turning off'] | |
104 | self.putx(5, 1, s) | |
105 | else: | |
106 | self.advance_ann(5, 1) | |
107 | i >>= 1 | |
108 | bit += 1 | |
109 | ||
110 | def start(self): | |
111 | self.out_ann = self.register(srd.OUTPUT_ANN) | |
112 | ||
113 | def handle_configuration_cmd(self, cmd, ret): | |
114 | self.putx(0, 8, ['Configuration command', 'Configuration']) | |
115 | NAMES = [['Internal data register', 'el'], ['FIFO mode', 'ef']] | |
116 | ||
117 | bits = (cmd[1] & 0xC0) >> 6 | |
118 | old_bits = (self.last_config & 0xC0) >> 6 | |
119 | self.describe_bits(bits, NAMES) | |
120 | self.describe_changed_bits(bits, old_bits, NAMES) | |
121 | ||
122 | FREQUENCIES = ['315', '433', '868', '915'] | |
123 | f = FREQUENCIES[(cmd[1] & 0x30) >> 4] + 'MHz' | |
124 | self.putx(1, 2, ['Frequency: ' + f, f]) | |
125 | if cmd[1] & 0x30 != self.last_config & 0x30: | |
126 | self.putx(5, 2, ['Changed', '~']) | |
127 | ||
128 | c = '%.1fpF' % (8.5 + (cmd[1] & 0xF) * 0.5) | |
129 | self.putx(1, 4, ['Capacitance: ' + c, c]) | |
130 | if cmd[1] & 0xF != self.last_config & 0xF: | |
131 | self.putx(5, 4, ['Changed', '~']) | |
132 | ||
133 | self.last_config = cmd[1] | |
134 | ||
135 | def handle_power_management_cmd(self, cmd, ret): | |
136 | self.putx(0, 8, ['Power management', 'Power']) | |
137 | NAMES = [['Receiver chain', 'er'], ['Baseband circuit', 'ebb'], | |
138 | ['Transmission', 'et'], ['Synthesizer', 'es'], | |
139 | ['Crystal oscillator', 'ex'], ['Low battery detector', 'eb'], | |
140 | ['Wake-up timer', 'ew'], ['Clock output off switch', 'dc']] | |
141 | ||
142 | self.describe_bits(cmd[1], NAMES) | |
143 | ||
144 | power = cmd[1] | |
145 | ||
146 | # Some bits imply other, even if they are set to 0. | |
147 | if power & 0x80: | |
148 | power |= 0x58 | |
149 | if power & 0x20: | |
150 | power |= 0x18 | |
151 | self.describe_changed_bits(power, self.last_power, NAMES) | |
152 | ||
153 | self.last_power = power | |
154 | ||
155 | def handle_frequency_setting_cmd(self, cmd, ret): | |
156 | self.putx(0, 4, ['Frequency setting', 'Frequency']) | |
157 | f = ((cmd[1] & 0xF) << 8) + cmd[2] | |
158 | self.putx(0, 12, ['F = %3.4f' % f]) | |
159 | self.row_pos[2] -= 4 | |
160 | if self.last_freq != f: | |
161 | self.putx(5, 12, ['Changing', '~']) | |
162 | self.last_freq = f | |
163 | ||
164 | def handle_data_rate_cmd(self, cmd, ret): | |
165 | self.putx(0, 8, ['Data rate command', 'Data rate']) | |
166 | r = cmd[1] & 0x7F | |
167 | cs = (cmd[1] & 0x80) >> 7 | |
168 | rate = 10000 / 29.0 / (r + 1) / (1 + 7 * cs) | |
169 | self.putx(0, 8, ['%3.1fkbps' % rate]) | |
170 | if self.last_data_rate != cmd[1]: | |
171 | self.putx(5, 8, ['Changing', '~']) | |
172 | self.last_data_rate = cmd[1] | |
173 | ||
174 | def handle_receiver_control_cmd(self, cmd, ret): | |
175 | self.putx(0, 5, ['Receiver control command']) | |
176 | s = 'interrupt input' if (cmd[0] & 0x04) else 'VDI output' | |
177 | self.putx(0, 1, ['pin16 = ' + s]) | |
178 | VDI_NAMES = ['Fast', 'Medium', 'Slow', 'Always on'] | |
179 | vdi_speed = VDI_NAMES[cmd[0] & 0x3] | |
180 | self.putx(0, 2, ['VDI: %s' % vdi_speed]) | |
181 | BANDWIDTH_NAMES = ['Reserved', '400kHz', '340kHz', '270kHz', '200kHz', | |
182 | '134kHz', '67kHz', 'Reserved'] | |
183 | bandwidth = BANDWIDTH_NAMES[(cmd[1] & 0xE0) >> 5] | |
184 | self.putx(0, 3, ['Bandwidth: %s' % bandwidth]) | |
185 | LNA_GAIN_NAMES = [0, -6, -14, -20] | |
186 | lna_gain = LNA_GAIN_NAMES[(cmd[1] & 0x18) >> 3] | |
187 | self.putx(0, 2, ['LNA gain: %ddB' % lna_gain]) | |
188 | RSSI_THRESHOLD_NAMES = ['-103', '-97', '-91', '-85', '-79', '-73', | |
189 | 'Reserved', 'Reserved'] | |
190 | rssi_threshold = RSSI_THRESHOLD_NAMES[cmd[1] & 0x7] | |
191 | self.putx(0, 3, ['RSSI threshold: %s' % rssi_threshold]) | |
192 | ||
193 | def handle_data_filter_cmd(self, cmd, ret): | |
194 | self.putx(0, 8, ['Data filter command']) | |
195 | if cmd[1] & 0x80: | |
196 | clock_recovery = 'auto' | |
197 | elif cmd[1] & 0x40: | |
198 | clock_recovery = 'fast' | |
199 | else: | |
200 | clock_recovery = 'slow' | |
201 | self.putx(0, 2, ['Clock recovery: %s mode' % clock_recovery]) | |
202 | self.advance_ann(0, 1) # Should always be 1. | |
203 | s = 'analog' if (cmd[1] & 0x10) else 'digital' | |
204 | self.putx(0, 1, ['Data filter: ' + s]) | |
205 | self.advance_ann(0, 1) # Should always be 1. | |
206 | self.putx(0, 3, ['DQD threshold: %d' % (cmd[1] & 0x7)]) | |
207 | ||
208 | def handle_fifo_and_reset_cmd(self, cmd, ret): | |
209 | self.putx(0, 8, ['FIFO and reset command']) | |
210 | fifo_level = (cmd[1] & 0xF0) >> 4 | |
211 | self.putx(0, 4, ['FIFO trigger level: %d' % fifo_level]) | |
212 | last_fifo_level = (self.last_fifo_and_reset & 0xF0) >> 4 | |
213 | if fifo_level != last_fifo_level: | |
214 | self.putx(5, 4, ['Changing', '~']) | |
215 | else: | |
216 | self.advance_ann(5, 4) | |
217 | s = 'one byte' if (cmd[1] & 0x08) else 'two bytes' | |
218 | self.putx(0, 1, ['Synchron length: ' + s]) | |
219 | if (cmd[1] & 0x08) != (self.last_fifo_and_reset & 0x08): | |
220 | self.putx(5, 1, ['Changing', '~']) | |
221 | else: | |
222 | self.advance_ann(5, 1) | |
223 | ||
224 | if cmd[1] & 0x04: | |
225 | fifo_fill = 'Always' | |
226 | elif cmd[1] & 0x02: | |
227 | fifo_fill = 'After synchron pattern' | |
228 | else: | |
229 | fifo_fill = 'Never' | |
230 | self.putx(0, 2, ['FIFO fill: %s' % fifo_fill]) | |
231 | if (cmd[1] & 0x06) != (self.last_fifo_and_reset & 0x06): | |
232 | self.putx(5, 2, ['Changing', '~']) | |
233 | else: | |
234 | self.advance_ann(5, 2) | |
235 | ||
236 | s = 'non-sensitive' if (cmd[1] & 0x01) else 'sensitive' | |
237 | self.putx(0, 1, ['Reset mode: ' + s]) | |
238 | if (cmd[1] & 0x01) != (self.last_fifo_and_reset & 0x01): | |
239 | self.putx(5, 1, ['Changing', '~']) | |
240 | else: | |
241 | self.advance_ann(5, 1) | |
242 | ||
243 | self.last_fifo_and_reset = cmd[1] | |
244 | ||
245 | def handle_synchron_pattern_cmd(self, cmd, ret): | |
246 | self.putx(0, 8, ['Synchron pattern command']) | |
247 | if self.last_fifo_and_reset & 0x08: | |
248 | self.putx(0, 8, ['Pattern: 0x2D%02X' % pattern]) | |
249 | else: | |
250 | self.putx(0, 8, ['Pattern: %02X' % pattern]) | |
251 | ||
252 | def handle_fifo_read_cmd(self, cmd, ret): | |
253 | self.putx(0, 8, ['FIFO read command', 'FIFO read']) | |
254 | self.putx(3, 8, ['Data: %02X' % ret[1]]) | |
255 | ||
256 | def handle_afc_cmd(self, cmd, ret): | |
257 | self.putx(0, 8, ['AFC command']) | |
258 | MODES = ['Off', 'Once', 'During receiving', 'Always'] | |
259 | mode = (cmd[1] & 0xC0) >> 6 | |
260 | self.putx(0, 2, ['Mode: %s' % MODES[mode]]) | |
261 | if (cmd[1] & 0xC0) != (self.last_afc & 0xC0): | |
262 | self.putx(5, 2, ['Changing', '~']) | |
263 | else: | |
264 | self.advance_ann(5, 2) | |
265 | ||
266 | range_limit = (cmd[1] & 0x30) >> 4 | |
267 | FREQ_TABLE = [0.0, 2.5, 5.0, 7.5] | |
268 | freq_delta = FREQ_TABLE[(self.last_config & 0x30) >> 4] | |
269 | ||
270 | if range_limit == 0: | |
271 | self.putx(0, 2, ['Range: No limit']) | |
272 | elif range_limit == 1: | |
273 | self.putx(0, 2, ['Range: +/-%dkHz' % (15 * freq_delta)]) | |
274 | elif range_limit == 2: | |
275 | self.putx(0, 2, ['Range: +/-%dkHz' % (7 * freq_delta)]) | |
276 | elif range_limit == 3: | |
277 | self.putx(0, 2, ['Range: +/-%dkHz' % (3 * freq_delta)]) | |
278 | ||
279 | if (cmd[1] & 0x30) != (self.last_afc & 0x30): | |
280 | self.putx(5, 2, ['Changing', '~']) | |
281 | else: | |
282 | self.advance_ann(5, 2) | |
283 | ||
284 | NAMES = ['Strobe edge', 'High accuracy mode', 'Enable offset register', | |
285 | 'Enable offset calculation'] | |
286 | self.describe_bits(cmd[1] & 0xF, NAMES) | |
287 | self.describe_changed_bits(cmd[1] & 0xF, self.last_afc & 0xF, NAMES) | |
288 | ||
289 | self.last_afc = cmd[1] | |
290 | ||
291 | def handle_transceiver_control_cmd(self, cmd, ret): | |
292 | self.putx(0, 8, ['Transceiver control command']) | |
293 | self.putx(0, 4, ['FSK frequency delta: %dkHz' % (15 * ((cmd[1] & 0xF0) >> 4))]) | |
294 | if cmd[1] & 0xF0 != self.last_transceiver & 0xF0: | |
295 | self.putx(5, 4, ['Changing', '~']) | |
296 | else: | |
297 | self.advance_ann(5, 4) | |
298 | ||
299 | POWERS = [0, -2.5, -5, -7.5, -10, -12.5, -15, -17.5] | |
300 | self.advance_ann(0, 1) | |
301 | self.advance_ann(5, 1) | |
302 | self.putx(0,3, ['Relative power: %dB' % (cmd[1] & 0x07)]) | |
303 | if (cmd[1] & 0x07) != (self.last_transceiver & 0x07): | |
304 | self.putx(5, 3, ['Changing', '~']) | |
305 | else: | |
306 | self.advance_ann(5, 3) | |
307 | self.last_transceiver = cmd[1] | |
308 | ||
309 | def handle_pll_setting_cmd(self, cmd, ret): | |
310 | self.putx(0, 8, ['PLL setting command']) | |
311 | self.advance_ann(0, 1) | |
312 | self.putx(0, 2, ['Clock buffer rise and fall time']) | |
313 | self.advance_ann(0, 1) | |
314 | self.advance_ann(5, 4) | |
315 | NAMES = [['Delay in phase detector', 'dly'], ['Disable dithering', 'ddit']] | |
316 | self.describe_bits((cmd[1] & 0xC) >> 2, NAMES) | |
317 | self.describe_changed_bits((cmd[1] & 0xC) >> 2, (self.last_pll & 0xC) >> 2, NAMES) | |
318 | s = '256kbps, high' if (cmd[1] & 0x01) else '86.2kbps, low' | |
319 | self.putx(0, 1, ['Max bit rate: %s noise' % s]) | |
320 | ||
321 | self.advance_ann(5, 1) | |
322 | if (cmd[1] & 0x01) != (self.last_pll & 0x01): | |
323 | self.putx(5, 1, ['Changing', '~']) | |
324 | ||
325 | self.last_pll = cmd[1] | |
326 | ||
327 | def handle_transmitter_register_cmd(self, cmd, ret): | |
328 | self.putx(0, 8, ['Transmitter register command', 'Transmit']) | |
329 | self.putx(0, 8, ['Data: %s' % cmd[1], '%s' % cmd[1]]) | |
330 | ||
331 | def handle_software_reset_cmd(self, cmd, ret): | |
332 | self.putx(0, 16, ['Software reset command']) | |
333 | ||
334 | def handle_wake_up_timer_cmd(self, cmd, ret): | |
335 | self.putx(0, 3, ['Wake-up timer command', 'Timer']) | |
336 | r = cmd[0] & 0x1F | |
337 | m = cmd[1] | |
338 | time = 1.03 * m * pow(2, r) + 0.5 | |
339 | self.putx(0, 13, ['Time: %7.2f' % time]) | |
340 | ||
341 | def handle_low_duty_cycle_cmd(self, cmd, ret): | |
342 | self.putx(0, 16, ['Low duty cycle command']) | |
343 | ||
344 | def handle_low_battery_detector_cmd(self, cmd, ret): | |
345 | self.putx(0, 8, ['Low battery detector command']) | |
346 | NAMES = ['1', '1.25', '1.66', '2', '2.5', '3.33', '5', '10'] | |
347 | clock = NAMES[(cmd[1] & 0xE0) >> 5] | |
348 | self.putx(0, 3, ['Clock output: %sMHz' % clock, '%sMHz' % clock]) | |
349 | self.advance_ann(0, 1) | |
350 | v = 2.25 + (cmd[1] & 0x0F) * 0.1 | |
351 | self.putx(0, 4, ['Low battery voltage: %1.2fV' % v, '%1.2fV' % v]) | |
352 | ||
353 | def handle_status_read_cmd(self, cmd, ret): | |
354 | self.putx(0, 8, ['Status read command', 'Status']) | |
355 | NAMES = ['RGIT/FFIT', 'POR', 'RGUR/FFOV', 'WKUP', 'EXT', 'LBD', | |
356 | 'FFEM', 'RSSI/ATS', 'DQD', 'CRL', 'ATGL'] | |
357 | status = (ret[0] << 3) + (ret[1] >> 5) | |
358 | self.row_pos[1] -= 8 | |
359 | self.row_pos[2] -= 8 | |
360 | self.describe_return_bits(status, NAMES) | |
361 | receiver_enabled = (self.last_power & 0x80) >> 7 | |
362 | ||
363 | if ret[0] & 0x80: | |
364 | if receiver_enabled: | |
365 | s = 'Received data in FIFO' | |
366 | else: | |
367 | s = 'Transmit register ready' | |
368 | self.putx(5, 1, s) | |
369 | else: | |
370 | self.advance_ann(5, 1) | |
371 | if ret[0] & 0x40: | |
372 | self.putx(5, 1, 'Power on Reset') | |
373 | else: | |
374 | self.advance_ann(5, 1) | |
375 | if ret[0] & 0x20: | |
376 | if receiver_enabled: | |
377 | s = 'RX FIFO overflow' | |
378 | else: | |
379 | s = 'Transmit register under run' | |
380 | self.putx(5, 1, s) | |
381 | else: | |
382 | self.advance_ann(5, 1) | |
383 | if ret[0] & 0x10: | |
384 | self.putx(5, 1, 'Wake-up timer') | |
385 | else: | |
386 | self.advance_ann(5, 1) | |
387 | if ret[0] & 0x08: | |
388 | self.putx(5, 1, 'External interrupt') | |
389 | else: | |
390 | self.advance_ann(5, 1) | |
391 | if ret[0] & 0x04: | |
392 | self.putx(5, 1, 'Low battery') | |
393 | else: | |
394 | self.advance_ann(5, 1) | |
395 | if ret[0] & 0x02: | |
396 | self.putx(5, 1, 'FIFO is empty') | |
397 | else: | |
398 | self.advance_ann(5, 1) | |
399 | if ret[0] & 0x01: | |
400 | if receiver_enabled: | |
401 | s = 'Incoming signal above limit' | |
402 | else: | |
403 | s = 'Antenna detected RF signal' | |
404 | self.putx(5, 1, s) | |
405 | else: | |
406 | self.advance_ann(5, 1) | |
407 | if ret[1] & 0x80: | |
408 | self.putx(5, 1, 'Data quality detector') | |
409 | else: | |
410 | self.advance_ann(5, 1) | |
411 | if ret[1] & 0x40: | |
412 | self.putx(5, 1, 'Clock recovery locked') | |
413 | else: | |
414 | self.advance_ann(5, 1) | |
415 | self.advance_ann(5, 1) | |
416 | ||
417 | self.putx(3, 5, ['AFC offset']) | |
418 | if (self.last_status[1] & 0x1F) != (ret[1] & 0x1F): | |
419 | self.putx(5, 5, ['Changed', '~']) | |
420 | self.last_status = ret | |
421 | ||
422 | def handle_cmd(self, cmd, ret): | |
423 | if cmd[0] == 0x80: | |
424 | self.handle_configuration_cmd(cmd, ret) | |
425 | elif cmd[0] == 0x82: | |
426 | self.handle_power_management_cmd(cmd, ret) | |
427 | elif cmd[0] & 0xF0 == 0xA0: | |
428 | self.handle_frequency_setting_cmd(cmd, ret) | |
429 | elif cmd[0] == 0xC6: | |
430 | self.handle_data_rate_cmd(cmd, ret) | |
431 | elif cmd[0] & 0xF8 == 0x90: | |
432 | self.handle_receiver_control_cmd(cmd, ret) | |
433 | elif cmd[0] == 0xC2: | |
434 | self.handle_data_filter_cmd(cmd, ret) | |
435 | elif cmd[0] == 0xCA: | |
436 | self.handle_fifo_and_reset_cmd(cmd, ret) | |
437 | elif cmd[0] == 0xCE: | |
438 | self.handle_synchron_pattern_cmd(cmd, ret) | |
439 | elif cmd[0] == 0xB0: | |
440 | self.handle_fifo_read_cmd(cmd, ret) | |
441 | elif cmd[0] == 0xC4: | |
442 | self.handle_afc_cmd(cmd, ret) | |
443 | elif cmd[0] & 0xFE == 0x98: | |
444 | self.handle_transceiver_control_cmd(cmd, ret) | |
445 | elif cmd[0] == 0xCC: | |
446 | self.handle_pll_setting_cmd(cmd, ret) | |
447 | elif cmd[0] == 0xB8: | |
448 | self.handle_transmitter_register_cmd(cmd, ret) | |
449 | elif cmd[0] == 0xFE: | |
450 | self.handle_software_reset_cmd(cmd, ret) | |
451 | elif cmd[0] & 0xE0 == 0xE0: | |
452 | self.handle_wake_up_timer_cmd(cmd, ret) | |
453 | elif cmd[0] == 0xC8: | |
454 | self.handle_low_duty_cycle_cmd(cmd, ret) | |
455 | elif cmd[0] == 0xC0: | |
456 | self.handle_low_battery_detector_cmd(cmd, ret) | |
457 | elif cmd[0] == 0x00: | |
458 | self.handle_status_read_cmd(cmd, ret) | |
459 | else: | |
460 | c = '%02x %02x' % tuple(cmd) | |
461 | r = '%02x %02x' % tuple(ret) | |
462 | self.putx(0, 16, ['Unknown command: %s (reply: %s)!' % (c, r)]) | |
463 | ||
464 | def decode(self, ss, es, data): | |
465 | ptype, mosi, miso = data | |
466 | ||
467 | # For now, only use DATA and BITS packets. | |
468 | if ptype not in ('DATA', 'BITS'): | |
469 | return | |
470 | ||
471 | # Store the individual bit values and ss/es numbers. The next packet | |
472 | # is guaranteed to be a 'DATA' packet belonging to this 'BITS' one. | |
473 | if ptype == 'BITS': | |
474 | if mosi is not None: | |
475 | self.mosi_bits.extend(reversed(mosi)) | |
476 | if miso is not None: | |
477 | self.miso_bits.extend(reversed(miso)) | |
478 | return | |
479 | ||
480 | # Append new bytes. | |
481 | self.mosi_bytes.append(mosi) | |
482 | self.miso_bytes.append(miso) | |
483 | ||
484 | # All commands consist of 2 bytes. | |
485 | if len(self.mosi_bytes) < 2: | |
486 | return | |
487 | ||
488 | self.row_pos = [0, 8, 8] | |
489 | ||
490 | self.handle_cmd(self.mosi_bytes, self.miso_bytes) | |
491 | ||
492 | self.mosi_bytes, self.miso_bytes = [], [] | |
493 | self.mosi_bits, self.miso_bits = [], [] |