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##
## This file is part of the libsigrokdecode project.
##
## Copyright (C) 2017 Joel Holdsworth <joel@airwebreathe.org.uk>
##
## 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 <http://www.gnu.org/licenses/>.
##
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 = 3
id = 'adf435x'
name = 'ADF435x'
longname = 'Analog Devices ADF4350/1'
desc = 'Wideband synthesizer with integrated VCO.'
license = 'gplv3+'
inputs = ['spi']
outputs = []
tags = ['Clock/timing', 'IC', 'Wireless/RF']
annotations = (
# Sent from the host to the chip.
('write', 'Register write'),
)
annotation_rows = (
('writes', 'Register writes', (ANN_REG,)),
)
def __init__(self):
self.reset()
def reset(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, _, _ = data
if ptype == 'CS-CHANGE':
_, cs_before, cs_after = data
if cs_before == 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':
_, mosi_bits, miso_bits = data
self.bits = mosi_bits + self.bits
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