mirror of
https://github.com/DreamSourceLab/DSView.git
synced 2025-01-13 13:32:53 +08:00
118 lines
3.3 KiB
Python
118 lines
3.3 KiB
Python
##
|
|
## This file is part of the libsigrokdecode project.
|
|
##
|
|
## Copyright (C) 2015 Karl Palsson <karlp@tweak.net.au>
|
|
##
|
|
## 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 <http://www.gnu.org/licenses/>.
|
|
##
|
|
|
|
import sigrokdecode as srd
|
|
|
|
regs = {
|
|
0: 'Product_ID',
|
|
1: 'Revision_ID',
|
|
2: 'Motion',
|
|
3: 'Delta_X',
|
|
4: 'Delta_Y',
|
|
5: 'SQUAL',
|
|
6: 'Shutter_Upper',
|
|
7: 'Shutter_Lower',
|
|
8: 'Maximum_Pixel',
|
|
9: 'Pixel_Sum',
|
|
0xa: 'Minimum_Pixel',
|
|
0xb: 'Pixel_Grab',
|
|
0xd: 'Mouse_Control',
|
|
0x3a: 'Chip_Reset',
|
|
0x3f: 'Inv_Rev_ID',
|
|
0x63: 'Motion_Burst',
|
|
}
|
|
|
|
class Decoder(srd.Decoder):
|
|
api_version = 3
|
|
id = 'adns5020'
|
|
name = 'ADNS-5020'
|
|
longname = 'Avago ADNS-5020'
|
|
desc = 'Bidirectional optical mouse sensor protocol.'
|
|
license = 'gplv2+'
|
|
inputs = ['spi']
|
|
outputs = []
|
|
tags = ['IC', 'PC', 'Sensor']
|
|
annotations = (
|
|
('read', 'Register read commands'),
|
|
('write', 'Register write commands'),
|
|
('warning', 'Warnings'),
|
|
)
|
|
annotation_rows = (
|
|
('read', 'Read', (0,)),
|
|
('write', 'Write', (1,)),
|
|
('warnings', 'Warnings', (2,)),
|
|
)
|
|
|
|
def __init__(self):
|
|
self.reset()
|
|
|
|
def reset(self):
|
|
self.ss_cmd, self.es_cmd = 0, 0
|
|
self.mosi_bytes = []
|
|
|
|
def start(self):
|
|
self.out_ann = self.register(srd.OUTPUT_ANN)
|
|
|
|
def putx(self, data):
|
|
self.put(self.ss_cmd, self.es_cmd, self.out_ann, data)
|
|
|
|
def put_warn(self, pos, msg):
|
|
self.put(pos[0], pos[1], self.out_ann, [2, [msg]])
|
|
|
|
def decode(self, ss, es, data):
|
|
ptype = data[0]
|
|
if ptype == 'CS-CHANGE':
|
|
# If we transition high mid-stream, toss out our data and restart.
|
|
cs_old, cs_new = data[1:]
|
|
if cs_old is not None and cs_old == 0 and cs_new == 1:
|
|
if len(self.mosi_bytes) not in [0, 2]:
|
|
self.put_warn([self.ss_cmd, es], 'Misplaced CS#!')
|
|
self.mosi_bytes = []
|
|
return
|
|
|
|
# Don't care about anything else.
|
|
if ptype != 'DATA':
|
|
return
|
|
mosi, miso = data[1:]
|
|
|
|
self.ss, self.es = ss, es
|
|
|
|
if len(self.mosi_bytes) == 0:
|
|
self.ss_cmd = ss
|
|
self.mosi_bytes.append(mosi)
|
|
|
|
# Writes/reads are mostly two transfers (burst mode is different).
|
|
if len(self.mosi_bytes) != 2:
|
|
return
|
|
|
|
self.es_cmd = es
|
|
cmd, arg = self.mosi_bytes
|
|
write = cmd & 0x80
|
|
reg = cmd & 0x7f
|
|
reg_desc = regs.get(reg, 'Reserved %#x' % reg)
|
|
if reg > 0x63:
|
|
reg_desc = 'Unknown'
|
|
|
|
if write:
|
|
self.putx([1, ['%s: {$}' % reg_desc, '@%02X' % arg]])
|
|
else:
|
|
self.putx([0, ['%s: {$}' % reg_desc, '@%02X' % arg]])
|
|
|
|
self.mosi_bytes = []
|