projects / libsigrok.git / blame
| Commit | Line | Data |
|---|---|---|
| 58c5f2ed UH |
1 | /* |
| 2 | * This file is part of the sigrok project. | |
| 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 | ||
| 36 | SR_PRIV int zp_set_samplerate(struct dev_context *devc, uint64_t samplerate) | |
| 37 | { | |
| 38 | int i; | |
| 39 | ||
| 40 | for (i = 0; zp_supported_samplerates[i]; i++) | |
| 41 | if (samplerate == zp_supported_samplerates[i]) | |
| 42 | break; | |
| 43 | ||
| 44 | if (!zp_supported_samplerates[i] || samplerate > devc->max_samplerate) { | |
| 45 | sr_err("Unsupported samplerate."); | |
| 46 | return SR_ERR_ARG; | |
| 47 | } | |
| 48 | ||
| 49 | sr_info("Setting samplerate to %" PRIu64 "Hz.", samplerate); | |
| 50 | ||
| 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); | |
| 55 | else | |
| 56 | analyzer_set_freq(samplerate, FREQ_SCALE_HZ); | |
| 57 | ||
| 58 | devc->cur_samplerate = samplerate; | |
| 59 | ||
| 60 | return SR_OK; | |
| 61 | } | |
| 62 | ||
| 63 | SR_PRIV int set_limit_samples(struct dev_context *devc, uint64_t samples) | |
| 64 | { | |
| 65 | devc->limit_samples = samples; | |
| 66 | ||
| 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; | |
| 74 | else | |
| 75 | devc->memory_size = MEMORY_SIZE_512K; | |
| 76 | ||
| 77 | sr_info("Setting memory size to %dK.", | |
| 78 | get_memory_size(devc->memory_size) / 1024); | |
| 79 | ||
| 80 | analyzer_set_memory_size(devc->memory_size); | |
| 81 | ||
| 82 | return SR_OK; | |
| 83 | } | |
| 84 | ||
| 85 | SR_PRIV int set_capture_ratio(struct dev_context *devc, uint64_t ratio) | |
| 86 | { | |
| 87 | if (ratio > 100) { | |
| 88 | sr_err("Invalid capture ratio: %" PRIu64 ".", ratio); | |
| 89 | return SR_ERR_ARG; | |
| 90 | } | |
| 91 | ||
| 92 | devc->capture_ratio = ratio; | |
| 93 | ||
| 94 | sr_info("Setting capture ratio to %d%%.", devc->capture_ratio); | |
| 95 | ||
| 96 | return SR_OK; | |
| 97 | } | |
| 98 | ||
| 99 | SR_PRIV void set_triggerbar(struct dev_context *devc) | |
| 100 | { | |
| 101 | unsigned int ramsize; | |
| 102 | unsigned int n; | |
| 103 | unsigned int triggerbar; | |
| 104 | ||
| 105 | ramsize = get_memory_size(devc->memory_size) / 4; | |
| 106 | if (devc->trigger) { | |
| 107 | n = ramsize; | |
| 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; | |
| 113 | if (n > ramsize - 8) | |
| 114 | triggerbar = ramsize - 8; | |
| 115 | else | |
| 116 | triggerbar = n; | |
| 117 | } else { | |
| 118 | triggerbar = 0; | |
| 119 | } | |
| 120 | analyzer_set_triggerbar_address(triggerbar); | |
| 121 | analyzer_set_ramsize_trigger_address(ramsize - triggerbar); | |
| 122 | ||
| 123 | sr_dbg("triggerbar_address = %d(0x%x)", triggerbar, triggerbar); | |
| 124 | sr_dbg("ramsize_triggerbar_address = %d(0x%x)", | |
| 125 | ramsize - triggerbar, ramsize - triggerbar); | |
| 126 | } |