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asix-sigma.h
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1 /*
2  * This file is part of the sigrok project.
3  *
4  * Copyright (C) 2010 Håvard Espeland <gus@ping.uio.no>,
5  * Copyright (C) 2010 Martin Stensgård <mastensg@ping.uio.no>
6  * Copyright (C) 2010 Carl Henrik Lunde <chlunde@ping.uio.no>
7  *
8  * This program is free software: you can redistribute it and/or modify
9  * it under the terms of the GNU General Public License as published by
10  * the Free Software Foundation, either version 3 of the License, or
11  * (at your option) any later version.
12  *
13  * This program is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16  * GNU General Public License for more details.
17  *
18  * You should have received a copy of the GNU General Public License
19  * along with this program. If not, see <http://www.gnu.org/licenses/>.
20  */
21 
22 #ifndef LIBSIGROK_HARDWARE_ASIX_SIGMA_ASIX_SIGMA_H
23 #define LIBSIGROK_HARDWARE_ASIX_SIGMA_ASIX_SIGMA_H
24 
34 
35  WRITE_TEST = 15,
36 };
37 
39  READ_ID = 0,
46  READ_MODE = 7,
52 
53  READ_TEST = 15,
54 };
55 
56 #define REG_ADDR_LOW (0 << 4)
57 #define REG_ADDR_HIGH (1 << 4)
58 #define REG_DATA_LOW (2 << 4)
59 #define REG_DATA_HIGH_WRITE (3 << 4)
60 #define REG_READ_ADDR (4 << 4)
61 #define REG_DRAM_WAIT_ACK (5 << 4)
62 
63 /* Bit (1 << 4) can be low or high (double buffer / cache) */
64 #define REG_DRAM_BLOCK (6 << 4)
65 #define REG_DRAM_BLOCK_BEGIN (8 << 4)
66 #define REG_DRAM_BLOCK_DATA (10 << 4)
67 
68 #define LEDSEL0 6
69 #define LEDSEL1 7
70 
71 #define NEXT_REG 1
72 
73 #define EVENTS_PER_CLUSTER 7
74 
75 #define CHUNK_SIZE 1024
76 
78  uint8_t async;
79  uint8_t fraction;
80  uint16_t disabled_probes;
81 };
82 
83 /* The effect of all these are still a bit unclear. */
84 struct triggerinout {
87  uint8_t reserved1 : 1;
88  uint8_t trgout_bytrigger : 1;
89  uint8_t trgout_byevent : 1;
90  uint8_t trgout_bytriggerin : 1;
91  uint8_t reserved2 : 2;
92 
93  /* Should be set same as the first two */
96 
97  uint8_t reserved3 : 1;
98  uint8_t trgout_long : 1;
99  uint8_t trgout_pin : 1; /* Use 1k resistor. Pullup? */
100  uint8_t trgin_negate : 1;
101  uint8_t trgout_enable : 1;
102  uint8_t trgin_enable : 1;
103 };
104 
105 struct triggerlut {
106  /* The actual LUTs. */
107  uint16_t m0d[4], m1d[4], m2d[4];
108  uint16_t m3, m3s, m4;
109 
110  /* Paramters should be sent as a single register write. */
111  struct {
112  uint8_t selc : 2;
113  uint8_t selpresc : 6;
114 
115  uint8_t selinc : 2;
116  uint8_t selres : 2;
117  uint8_t sela : 2;
118  uint8_t selb : 2;
119 
120  uint16_t cmpb;
121  uint16_t cmpa;
122  } params;
123 };
124 
125 /* Trigger configuration */
127  /* Only two probes can be used in mask. */
128  uint16_t risingmask;
129  uint16_t fallingmask;
130 
131  /* Simple trigger support (<= 50 MHz). */
132  uint16_t simplemask;
133  uint16_t simplevalue;
134 
135  /* TODO: Advanced trigger support (boolean expressions). */
136 };
137 
138 /* Events for trigger operation. */
139 enum triggerop {
140  OP_LEVEL = 1,
148 };
149 
150 /* Logical functions for trigger operation. */
152  FUNC_AND = 1,
158 };
159 
160 struct sigma_state {
161  enum {
166  } state;
167 
168  uint32_t stoppos, triggerpos;
169  uint16_t lastts;
170  uint16_t lastsample;
171 
174 };
175 
176 /* Private, per-device-instance driver context. */
177 struct context {
178  struct ftdi_context ftdic;
179  uint64_t cur_samplerate;
180  uint64_t period_ps;
181  uint64_t limit_msec;
182  struct timeval start_tv;
190  void *session_dev_id;
191 };
192 
193 #endif