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Commit | Line | Data |
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58c5f2ed | 1 | /* |
50985c20 | 2 | * This file is part of the libsigrok project. |
58c5f2ed UH |
3 | * |
4 | * Copyright (C) 2010-2012 Bert Vermeulen <bert@biot.com> | |
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 3 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, see <http://www.gnu.org/licenses/>. | |
18 | */ | |
19 | ||
20 | #include "protocol.h" | |
21 | ||
22 | SR_PRIV unsigned int get_memory_size(int type) | |
23 | { | |
24 | if (type == MEMORY_SIZE_8K) | |
25 | return 8 * 1024; | |
26 | else if (type == MEMORY_SIZE_64K) | |
27 | return 64 * 1024; | |
28 | else if (type == MEMORY_SIZE_128K) | |
29 | return 128 * 1024; | |
30 | else if (type == MEMORY_SIZE_512K) | |
31 | return 512 * 1024; | |
32 | else | |
33 | return 0; | |
34 | } | |
35 | ||
58c5f2ed UH |
36 | SR_PRIV int set_limit_samples(struct dev_context *devc, uint64_t samples) |
37 | { | |
38 | devc->limit_samples = samples; | |
39 | ||
40 | if (samples <= 2 * 1024) | |
41 | devc->memory_size = MEMORY_SIZE_8K; | |
42 | else if (samples <= 16 * 1024) | |
43 | devc->memory_size = MEMORY_SIZE_64K; | |
e495a676 | 44 | else if (samples <= 32 * 1024 || devc->max_memory_size <= 32 * 1024) |
58c5f2ed UH |
45 | devc->memory_size = MEMORY_SIZE_128K; |
46 | else | |
47 | devc->memory_size = MEMORY_SIZE_512K; | |
48 | ||
49 | sr_info("Setting memory size to %dK.", | |
50 | get_memory_size(devc->memory_size) / 1024); | |
51 | ||
52 | analyzer_set_memory_size(devc->memory_size); | |
53 | ||
54 | return SR_OK; | |
55 | } | |
56 | ||
57 | SR_PRIV int set_capture_ratio(struct dev_context *devc, uint64_t ratio) | |
58 | { | |
59 | if (ratio > 100) { | |
60 | sr_err("Invalid capture ratio: %" PRIu64 ".", ratio); | |
61 | return SR_ERR_ARG; | |
62 | } | |
63 | ||
64 | devc->capture_ratio = ratio; | |
65 | ||
66 | sr_info("Setting capture ratio to %d%%.", devc->capture_ratio); | |
67 | ||
68 | return SR_OK; | |
69 | } | |
70 | ||
71 | SR_PRIV void set_triggerbar(struct dev_context *devc) | |
72 | { | |
e495a676 | 73 | unsigned int ramsize, n, triggerbar; |
58c5f2ed UH |
74 | |
75 | ramsize = get_memory_size(devc->memory_size) / 4; | |
76 | if (devc->trigger) { | |
77 | n = ramsize; | |
78 | if (devc->max_memory_size < n) | |
79 | n = devc->max_memory_size; | |
80 | if (devc->limit_samples < n) | |
81 | n = devc->limit_samples; | |
82 | n = n * devc->capture_ratio / 100; | |
83 | if (n > ramsize - 8) | |
84 | triggerbar = ramsize - 8; | |
85 | else | |
86 | triggerbar = n; | |
87 | } else { | |
88 | triggerbar = 0; | |
89 | } | |
90 | analyzer_set_triggerbar_address(triggerbar); | |
91 | analyzer_set_ramsize_trigger_address(ramsize - triggerbar); | |
92 | ||
93 | sr_dbg("triggerbar_address = %d(0x%x)", triggerbar, triggerbar); | |
94 | sr_dbg("ramsize_triggerbar_address = %d(0x%x)", | |
95 | ramsize - triggerbar, ramsize - triggerbar); | |
96 | } |