From: Joel Holdsworth Date: Mon, 13 Feb 2017 04:44:19 +0000 (-0700) Subject: Added intial ADF4350/1 decoder X-Git-Tag: libsigrokdecode-0.5.0~84 X-Git-Url: https://sigrok.org/gitaction?a=commitdiff_plain;h=1d4fe1c19c0948fb67b4a91495b126a763ea7adb;p=libsigrokdecode.git Added intial ADF4350/1 decoder --- diff --git a/decoders/adf435x/__init__.py b/decoders/adf435x/__init__.py new file mode 100644 index 0000000..1c89e2d --- /dev/null +++ b/decoders/adf435x/__init__.py @@ -0,0 +1,29 @@ +## +## This file is part of the libsigrokdecode project. +## +## Copyright (C) 2017 Joel Holdsworth +## +## 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, see . +## + +''' +This decoder stacks on top of the 'spi' PD and decodes the protocol spoken +by the Analog Devices ADF4350 and ADF4351 RF synthesizer chips. + +Details: +http://www.analog.com/media/en/technical-documentation/data-sheets/ADF4350.pdf +http://www.analog.com/media/en/technical-documentation/data-sheets/ADF4351.pdf +''' + +from .pd import Decoder diff --git a/decoders/adf435x/pd.py b/decoders/adf435x/pd.py new file mode 100644 index 0000000..8f51ee2 --- /dev/null +++ b/decoders/adf435x/pd.py @@ -0,0 +1,140 @@ +## +## This file is part of the libsigrokdecode project. +## +## Copyright (C) 2017 Joel Holdsworth +## +## 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 3 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, see . +## + +import sigrokdecode as srd + +def disabled_enabled(v): + return ['Disabled', 'Enabled'][v] + +def output_power(v): + return '%+ddBm' % [-4, -1, 2, 5][v] + +regs = { +# reg: name offset width parser + 0: [ + ('FRAC', 3, 12, None), + ('INT', 15, 16, lambda v: 'Not Allowed' if v < 32 else v) + ], + 1: [ + ('MOD', 3, 12, None), + ('Phase', 15, 12, None), + ('Prescalar', 27, 1, lambda v: ['4/5', '8/9'][v]), + ('Phase Adjust', 28, 1, lambda v: ['Off', 'On'][v]), + ], + 2: [ + ('Counter Reset', 3, 1, disabled_enabled), + ('Charge Pump Three-State', 4, 1, disabled_enabled), + ('Power-Down', 5, 1, disabled_enabled), + ('PD Polarity', 6, 1, lambda v: ['Negative', 'Positive'][v]), + ('LDP', 7, 1, lambda v: ['10ns', '6ns'][v]), + ('LDF', 8, 1, lambda v: ['FRAC-N', 'INT-N'][v]), + ('Charge Pump Current Setting', 9, 4, lambda v: '%0.2fmA @ 5.1kΩ' % + [0.31, 0.63, 0.94, 1.25, 1.56, 1.88, 2.19, 2.50, + 2.81, 3.13, 3.44, 3.75, 4.06, 4.38, 4.69, 5.00][v]), + ('Double Buffer', 13, 1, disabled_enabled), + ('R Counter', 14, 10, None), + ('RDIV2', 24, 1, disabled_enabled), + ('Reference Doubler', 25, 1, disabled_enabled), + ('MUXOUT', 26, 3, lambda v: + ['Three-State Output', 'DVdd', 'DGND', 'R Counter Output', 'N Divider Output', + 'Analog Lock Detect', 'Digital Lock Detect', 'Reserved'][v]), + ('Low Noise and Low Spur Modes', 29, 2, lambda v: + ['Low Noise Mode', 'Reserved', 'Reserved', 'Low Spur Mode'][v]) + ], + 3: [ + ('Clock Divider', 3, 12, None), + ('Clock Divider Mode', 15, 2, lambda v: + ['Clock Divider Off', 'Fast Lock Enable', 'Resync Enable', 'Reserved'][v]), + ('CSR Enable', 18, 1, disabled_enabled), + ('Charge Cancellation', 21, 1, disabled_enabled), + ('ABP', 22, 1, lambda v: ['6ns (FRAC-N)', '3ns (INT-N)'][v]), + ('Band Select Clock Mode', 23, 1, lambda v: ['Low', 'High'][v]) + ], + 4: [ + ('Output Power', 3, 2, output_power), + ('Output Enable', 5, 1, disabled_enabled), + ('AUX Output Power', 6, 2, output_power), + ('AUX Output Select', 8, 1, lambda v: ['Divided Output', 'Fundamental'][v]), + ('AUX Output Enable', 9, 1, disabled_enabled), + ('MTLD', 10, 1, disabled_enabled), + ('VCO Power-Down', 11, 1, lambda v: + 'VCO Powered ' + ('Down' if v == 1 else 'Up')), + ('Band Select Clock Divider', 12, 8, None), + ('RF Divider Select', 20, 3, lambda v: '÷' + str(2**v)), + ('Feedback Select', 23, 1, lambda v: ['Divided', 'Fundamental'][v]), + ], + 5: [ + ('LD Pin Mode', 22, 2, lambda v: + ['Low', 'Digital Lock Detect', 'Low', 'High'][v]) + ] +} + +ANN_REG = 0 + +class Decoder(srd.Decoder): + api_version = 2 + id = 'adf435x' + name = 'ADF435x' + longname = 'Analog Devices ADF4350/1' + desc = 'Wideband synthesizer with integrated VCO.' + license = 'gplv3+' + inputs = ['spi'] + outputs = ['adf435x'] + annotations = ( + # Sent from the host to the chip. + ('register', 'Register written to the device'), + ) + annotation_rows = ( + ('registers', 'Register writes', (ANN_REG,)), + ) + + def __init__(self): + self.bits = [] + + def start(self): + self.out_ann = self.register(srd.OUTPUT_ANN) + + def decode_bits(self, offset, width): + return (sum([(1 << i) if self.bits[offset + i][0] else 0 for i in range(width)]), + (self.bits[offset + width - 1][1], self.bits[offset][2])) + + def decode_field(self, name, offset, width, parser): + val, pos = self.decode_bits(offset, width) + self.put(pos[0], pos[1], self.out_ann, [ANN_REG, + ['%s: %s' % (name, parser(val) if parser else str(val))]]) + return val + + def decode(self, ss, es, data): + + ptype, data1, data2 = data + + if ptype == 'CS-CHANGE': + if data1 == 1: + if len(self.bits) == 32: + reg_value, reg_pos = self.decode_bits(0, 3) + self.put(reg_pos[0], reg_pos[1], self.out_ann, [ANN_REG, + ['Register: %d' % reg_value, 'Reg: %d' % reg_value, + '[%d]' % reg_value]]) + if reg_value < len(regs): + field_descs = regs[reg_value] + for field_desc in field_descs: + field = self.decode_field(*field_desc) + self.bits = [] + if ptype == 'BITS': + self.bits = data1 + self.bits