From 9b3cdf318683db0f542e457d3ffca6f205f02a68 Mon Sep 17 00:00:00 2001
From: xiaoming <2014500726@smail.xtu.edu.cn>
Date: Tue, 26 Oct 2021 18:25:31 +0800
Subject: [PATCH] decoder: add ETH Auto Negotiation decoder
Signed-off-by: xiaoming <2014500726@smail.xtu.edu.cn>
---
.../decoders/autonegotiation/__init__.py | 25 +++++
.../decoders/autonegotiation/pd.py | 103 ++++++++++++++++++
2 files changed, 128 insertions(+)
create mode 100755 libsigrokdecode4DSL/decoders/autonegotiation/__init__.py
create mode 100755 libsigrokdecode4DSL/decoders/autonegotiation/pd.py
diff --git a/libsigrokdecode4DSL/decoders/autonegotiation/__init__.py b/libsigrokdecode4DSL/decoders/autonegotiation/__init__.py
new file mode 100755
index 00000000..461c1f65
--- /dev/null
+++ b/libsigrokdecode4DSL/decoders/autonegotiation/__init__.py
@@ -0,0 +1,25 @@
+##
+## This file is part of the libsigrokdecode project.
+##
+## Copyright (C) 2021 Quard <2014500726@smail.xtu.edu.cn>
+##
+## 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 .
+##
+
+'''
+The Auto-Negotiation specification includes reception, arbitration,
+and transmission of normal link pulses (NLPs).
+'''
+
+from .pd import Decoder
diff --git a/libsigrokdecode4DSL/decoders/autonegotiation/pd.py b/libsigrokdecode4DSL/decoders/autonegotiation/pd.py
new file mode 100755
index 00000000..20fc595e
--- /dev/null
+++ b/libsigrokdecode4DSL/decoders/autonegotiation/pd.py
@@ -0,0 +1,103 @@
+##
+## This file is part of the libsigrokdecode project.
+##
+## Copyright (C) 2021 Quard <2014500726@smail.xtu.edu.cn>
+##
+## 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 .
+##
+
+import sigrokdecode as srd
+
+class Decoder(srd.Decoder):
+ api_version = 3
+ id = 'eth_auto_negotiation'
+ name = 'ETH_AN'
+ longname = 'ETH Auto Negotiation'
+ desc = 'ETH Auto Negotiation protocol.'
+ license = 'gplv2+'
+ inputs = ['logic']
+ outputs = ['eth_an']
+ tags = ['PC']
+ channels = (
+ {'id': 'dp', 'name': 'TX+', 'desc': 'ETH TX+ signal'},
+ )
+ annotations = (
+ ('data', 'FLP data'),
+ ('format', 'format describe'),
+ ('bit', 'Bit'),
+ ('NLP', 'Normal link pulses'),
+ )
+ annotation_rows = (
+ ('data', 'Data', (0,)),
+ ('format', 'Format', (1,)),
+ ('bit', 'Bit', (2,)),
+ ('NLP', 'NLP', (3,)),
+ )
+
+ def __init__(self):
+ self.reset()
+
+ def reset(self):
+ self.ss = self.es = 0
+ self.last_ss = self.last_es = 0
+ self.last_vaild_ss = 0
+ self.samplerate = None
+ self.samplenum = 0
+ self.hex = 0
+
+ def start(self):
+ self.out_python = self.register(srd.OUTPUT_PYTHON)
+ self.out_ann = self.register(srd.OUTPUT_ANN)
+ self.out_binary = self.register(srd.OUTPUT_BINARY)
+
+ def metadata(self, key, value):
+ if key == srd.SRD_CONF_SAMPLERATE:
+ self.samplerate = value
+
+ def decode(self):
+ index = 0
+ data_list = []
+ while True:
+ self.wait({0: 'r'})
+ self.ss = self.samplenum
+ self.wait({0: 'e'})
+ self.es = self.samplenum
+
+ length = float(self.es - self.ss)/self.samplerate
+ if length <= 1.0e-5 and length >= 1.0e-6: # 1us ~ 10us
+ self.put(self.ss, self.es, self.out_ann, [3, ['NLP']])
+ temp_length = self.ss - self.last_vaild_ss
+ length = float(temp_length)/self.samplerate
+ self.last_vaild_ss = self.ss
+ if length <= 7.0e-5 and length >= 6.0e-5: # 60us ~ 70us
+ self.put(self.last_ss, self.es, self.out_ann, [2, ['0x1']])
+ self.hex = self.hex|0x1<= 1.2e-4: # 120us ~ 140us
+ self.put(self.last_ss, self.es-(temp_length>>1), self.out_ann, [2, ['0x0']])
+ data_list.append([self.ss-(temp_length>>1), self.es-(temp_length>>1),self.last_ss,self.last_es])
+ index = index + 1
+ self.last_ss = self.ss
+ self.last_es = self.es
+
+ if index == 16:
+ self.put(data_list[0][2], data_list[15][1], self.out_ann, [0, ["Data:"+str(hex(self.hex))]])
+ self.put(data_list[0][2], data_list[4][1], self.out_ann, [1, ["Selector field:"+str(hex(self.hex&0x1f))]])
+ self.put(data_list[5][2], data_list[12][1], self.out_ann, [1, ["Technology ability field:"+str(hex(((self.hex>>5)&0xff)))]])
+ self.put(data_list[13][2], data_list[15][1], self.out_ann, [1, ["Other fields:"+str(hex(((self.hex>>13)&0x7)))]])
+ data_list = []
+ index = 0
+ self.hex = 0
\ No newline at end of file