]>
Commit | Line | Data |
---|---|---|
cd0fc8c5 UH |
1 | ## |
2 | ## This file is part of the sigrok project. | |
3 | ## | |
c0d7b38e | 4 | ## Copyright (C) 2010-2012 Uwe Hermann <uwe@hermann-uwe.de> |
cd0fc8c5 UH |
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, write to the Free Software | |
18 | ## Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
19 | ## | |
20 | ||
156509ca | 21 | # Nintendo Wii Nunchuk protocol decoder |
cd0fc8c5 | 22 | |
677d597b | 23 | import sigrokdecode as srd |
1c8ac5bf | 24 | |
677d597b | 25 | class Decoder(srd.Decoder): |
a2c2afd9 | 26 | api_version = 1 |
2b7d0e2b | 27 | id = 'nunchuk' |
012cfd0d | 28 | name = 'Nunchuk' |
3d3da57d | 29 | longname = 'Nintendo Wii Nunchuk' |
a465436e | 30 | desc = 'Nintendo Wii Nunchuk controller protocol.' |
012cfd0d UH |
31 | license = 'gplv2+' |
32 | inputs = ['i2c'] | |
33 | outputs = ['nunchuck'] | |
decde15e | 34 | probes = [] |
5ea8b024 | 35 | optional_probes = [] |
012cfd0d | 36 | options = {} |
c0d7b38e | 37 | annotations = [ |
5ea8b024 | 38 | ['Text (verbose)', 'Human-readable text (verbose)'], |
ee3e279c | 39 | ['Text', 'Human-readable text'], |
c0d7b38e | 40 | ] |
012cfd0d UH |
41 | |
42 | def __init__(self, **kwargs): | |
5ea8b024 | 43 | self.state = 'IDLE' |
012cfd0d | 44 | self.sx = self.sy = self.ax = self.ay = self.az = self.bz = self.bc = 0 |
012cfd0d | 45 | self.databytecount = 0 |
5ea8b024 | 46 | self.reg = 0x00 |
012cfd0d UH |
47 | |
48 | def start(self, metadata): | |
56202222 UH |
49 | # self.out_proto = self.add(srd.OUTPUT_PROTO, 'nunchuk') |
50 | self.out_ann = self.add(srd.OUTPUT_ANN, 'nunchuk') | |
012cfd0d UH |
51 | |
52 | def report(self): | |
53 | pass | |
54 | ||
5ea8b024 UH |
55 | def handle_reg_0x00(self, databyte): |
56 | self.sx = databyte | |
57 | self.put(0, 0, self.out_ann, | |
58 | [0, ['Analog stick X position: 0x%02x' % self.sx]]) | |
59 | self.put(0, 0, self.out_ann, [1, ['SX: 0x%02x' % self.sx]]) | |
60 | ||
61 | def handle_reg_0x01(self, databyte): | |
62 | self.sy = databyte | |
63 | self.put(0, 0, self.out_ann, | |
64 | [0, ['Analog stick Y position: 0x%02x' % self.sy]]) | |
65 | self.put(0, 0, self.out_ann, [1, ['SY: 0x%02x' % self.sy]]) | |
66 | ||
67 | def handle_reg_0x02(self, databyte): | |
68 | self.ax = databyte << 2 | |
69 | self.put(0, 0, self.out_ann, | |
70 | [0, ['Accelerometer X value bits[9:2]: 0x%03x' % self.ax]]) | |
71 | self.put(0, 0, self.out_ann, [1, ['AX[9:2]: 0x%03x' % self.ax]]) | |
72 | ||
73 | def handle_reg_0x03(self, databyte): | |
74 | self.ay = databyte << 2 | |
75 | self.put(0, 0, self.out_ann, | |
76 | [0, ['Accelerometer Y value bits[9:2]: 0x%03x' % self.ay]]) | |
77 | self.put(0, 0, self.out_ann, [1, ['AY[9:2]: 0x%x' % self.ay]]) | |
78 | ||
79 | def handle_reg_0x04(self, databyte): | |
80 | self.az = databyte << 2 | |
81 | self.put(0, 0, self.out_ann, | |
82 | [0, ['Accelerometer Z value bits[9:2]: 0x%03x' % self.az]]) | |
83 | self.put(0, 0, self.out_ann, [1, ['AZ[9:2]: 0x%x' % self.az]]) | |
84 | ||
85 | # TODO: Bit-exact annotations. | |
86 | def handle_reg_0x05(self, databyte): | |
87 | self.bz = (databyte & (1 << 0)) >> 0 # Bits[0:0] | |
88 | self.bc = (databyte & (1 << 1)) >> 1 # Bits[1:1] | |
89 | ax_rest = (databyte & (3 << 2)) >> 2 # Bits[3:2] | |
90 | ay_rest = (databyte & (3 << 4)) >> 4 # Bits[5:4] | |
91 | az_rest = (databyte & (3 << 6)) >> 6 # Bits[7:6] | |
92 | self.ax |= ax_rest | |
93 | self.ay |= ay_rest | |
94 | self.az |= az_rest | |
95 | ||
96 | s = '' if (self.bz == 0) else 'not ' | |
97 | self.put(0, 0, self.out_ann, [0, ['Z button: %spressed' % s]]) | |
98 | self.put(0, 0, self.out_ann, [1, ['BZ: %d' % self.bz]]) | |
99 | ||
100 | s = '' if (self.bc == 0) else 'not ' | |
101 | self.put(0, 0, self.out_ann, [0, ['C button: %spressed' % s]]) | |
102 | self.put(0, 0, self.out_ann, [1, ['BC: %d' % self.bc]]) | |
103 | ||
104 | self.put(0, 0, self.out_ann, | |
105 | [0, ['Accelerometer X value bits[1:0]: 0x%03x' % ax_rest]]) | |
106 | self.put(0, 0, self.out_ann, [1, ['AX[1:0]: 0x%x' % ax_rest]]) | |
107 | ||
108 | self.put(0, 0, self.out_ann, | |
109 | [0, ['Accelerometer Y value bits[1:0]: 0x%03x' % ay_rest]]) | |
110 | self.put(0, 0, self.out_ann, [1, ['AY[1:0]: 0x%x' % ay_rest]]) | |
111 | ||
112 | self.put(0, 0, self.out_ann, | |
113 | [0, ['Accelerometer Z value bits[1:0]: 0x%03x' % az_rest]]) | |
114 | self.put(0, 0, self.out_ann, [1, ['AZ[1:0]: 0x%x' % az_rest]]) | |
c0d7b38e | 115 | |
5ea8b024 | 116 | def decode(self, ss, es, data): |
1b75abfd | 117 | cmd, databyte = data |
c0d7b38e | 118 | |
5ea8b024 UH |
119 | # Store the start/end samples of this I2C packet. |
120 | self.ss, self.es = ss, es | |
121 | ||
122 | # State machine. | |
123 | if self.state == 'IDLE': | |
124 | # Wait for an I2C START condition. | |
125 | if cmd != 'START': | |
126 | return | |
127 | self.state = 'GET SLAVE ADDR' | |
128 | self.block_start_sample = ss | |
129 | elif self.state == 'GET SLAVE ADDR': | |
130 | # Wait for an address read operation. | |
131 | if cmd != 'ADDRESS READ': | |
132 | return | |
133 | self.state = 'READ REGS' | |
134 | elif self.state == 'READ REGS': | |
135 | if cmd == 'DATA READ': | |
136 | handle_reg = getattr(self, 'handle_reg_0x%02x' % self.reg) | |
137 | handle_reg(databyte) | |
138 | self.reg += 1 | |
139 | elif cmd == 'STOP': | |
140 | self.block_end_sample = es | |
141 | ||
142 | # TODO: Only works if host reads _all_ regs (0x00 - 0x05). | |
143 | d = 'SX = 0x%02x, SY = 0x%02x, AX = 0x%02x, AY = 0x%02x, ' \ | |
144 | 'AZ = 0x%02x, BZ = 0x%02x, BC = 0x%02x' % (self.sx, \ | |
c0d7b38e | 145 | self.sy, self.ax, self.ay, self.az, self.bz, self.bc) |
5ea8b024 UH |
146 | self.put(self.block_start_sample, self.block_end_sample, |
147 | self.out_ann, [0, [d]]) | |
c0d7b38e UH |
148 | |
149 | self.sx = self.sy = self.ax = self.ay = self.az = 0 | |
150 | self.bz = self.bc = 0 | |
c0d7b38e | 151 | |
5ea8b024 | 152 | self.state = 'IDLE' |
c0d7b38e | 153 | else: |
5ea8b024 UH |
154 | # self.put(0, 0, self.out_ann, |
155 | # [0, ['Ignoring: %s (data=%s)' % (cmd, databyte)]]) | |
156 | pass | |
157 | else: | |
158 | raise Exception('Invalid state: %s' % self.state) | |
2b7d0e2b | 159 |