2 * This file is part of the sigrok project.
4 * Copyright (C) 2010-2012 Bert Vermeulen <bert@biot.com>
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.
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.
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/>.
22 SR_PRIV unsigned int get_memory_size(int type)
24 if (type == MEMORY_SIZE_8K)
26 else if (type == MEMORY_SIZE_64K)
28 else if (type == MEMORY_SIZE_128K)
30 else if (type == MEMORY_SIZE_512K)
36 SR_PRIV int zp_set_samplerate(struct dev_context *devc, uint64_t samplerate)
40 for (i = 0; zp_supported_samplerates[i]; i++)
41 if (samplerate == zp_supported_samplerates[i])
44 if (!zp_supported_samplerates[i] || samplerate > devc->max_samplerate) {
45 sr_err("Unsupported samplerate.");
49 sr_info("Setting samplerate to %" PRIu64 "Hz.", samplerate);
51 if (samplerate >= SR_MHZ(1))
52 analyzer_set_freq(samplerate / SR_MHZ(1), FREQ_SCALE_MHZ);
53 else if (samplerate >= SR_KHZ(1))
54 analyzer_set_freq(samplerate / SR_KHZ(1), FREQ_SCALE_KHZ);
56 analyzer_set_freq(samplerate, FREQ_SCALE_HZ);
58 devc->cur_samplerate = samplerate;
63 SR_PRIV int set_limit_samples(struct dev_context *devc, uint64_t samples)
65 devc->limit_samples = samples;
67 if (samples <= 2 * 1024)
68 devc->memory_size = MEMORY_SIZE_8K;
69 else if (samples <= 16 * 1024)
70 devc->memory_size = MEMORY_SIZE_64K;
71 else if (samples <= 32 * 1024 ||
72 devc->max_memory_size <= 32 * 1024)
73 devc->memory_size = MEMORY_SIZE_128K;
75 devc->memory_size = MEMORY_SIZE_512K;
77 sr_info("Setting memory size to %dK.",
78 get_memory_size(devc->memory_size) / 1024);
80 analyzer_set_memory_size(devc->memory_size);
85 SR_PRIV int set_capture_ratio(struct dev_context *devc, uint64_t ratio)
88 sr_err("Invalid capture ratio: %" PRIu64 ".", ratio);
92 devc->capture_ratio = ratio;
94 sr_info("Setting capture ratio to %d%%.", devc->capture_ratio);
99 SR_PRIV void set_triggerbar(struct dev_context *devc)
101 unsigned int ramsize;
103 unsigned int triggerbar;
105 ramsize = get_memory_size(devc->memory_size) / 4;
108 if (devc->max_memory_size < n)
109 n = devc->max_memory_size;
110 if (devc->limit_samples < n)
111 n = devc->limit_samples;
112 n = n * devc->capture_ratio / 100;
114 triggerbar = ramsize - 8;
120 analyzer_set_triggerbar_address(triggerbar);
121 analyzer_set_ramsize_trigger_address(ramsize - triggerbar);
123 sr_dbg("triggerbar_address = %d(0x%x)", triggerbar, triggerbar);
124 sr_dbg("ramsize_triggerbar_address = %d(0x%x)",
125 ramsize - triggerbar, ramsize - triggerbar);