2 * This file is part of the sigrok project.
4 * Copyright (C) 2010-2012 Bert Vermeulen <bert@biot.com>
5 * Copyright (C) 2011 HÃ¥vard Espeland <gus@ping.uio.no>
7 * This program is free software: you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation, either version 3 of the License, or
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program. If not, see <http://www.gnu.org/licenses/>.
24 #include "libsigrok.h"
25 #include "libsigrok-internal.h"
28 /* Message logging helpers with driver-specific prefix string. */
29 #define DRIVER_LOG_DOMAIN "output/bits: "
30 #define sr_log(l, s, args...) sr_log(l, DRIVER_LOG_DOMAIN s, ## args)
31 #define sr_spew(s, args...) sr_spew(DRIVER_LOG_DOMAIN s, ## args)
32 #define sr_dbg(s, args...) sr_dbg(DRIVER_LOG_DOMAIN s, ## args)
33 #define sr_info(s, args...) sr_info(DRIVER_LOG_DOMAIN s, ## args)
34 #define sr_warn(s, args...) sr_warn(DRIVER_LOG_DOMAIN s, ## args)
35 #define sr_err(s, args...) sr_err(DRIVER_LOG_DOMAIN s, ## args)
37 SR_PRIV int init_bits(struct sr_output *o)
39 return init(o, DEFAULT_BPL_BITS, MODE_BITS);
42 SR_PRIV int data_bits(struct sr_output *o, const uint8_t *data_in,
43 uint64_t length_in, uint8_t **data_out,
47 unsigned int outsize, offset, p;
53 max_linelen = SR_MAX_PROBENAME_LEN + 3 + ctx->samples_per_line
54 + ctx->samples_per_line / 8;
56 * Calculate space needed for probes. Set aside 512 bytes for
57 * extra output, e.g. trigger.
59 outsize = 512 + (1 + (length_in / ctx->unitsize) / ctx->samples_per_line)
60 * (ctx->num_enabled_probes * max_linelen);
62 if (!(outbuf = g_try_malloc0(outsize + 1))) {
63 sr_err("%s: outbuf malloc failed", __func__);
69 /* The header is still here, this must be the first packet. */
70 strncpy((char *)outbuf, ctx->header, outsize);
74 /* Ensure first transition. */
75 memcpy(&ctx->prevsample, data_in, ctx->unitsize);
76 ctx->prevsample = ~ctx->prevsample;
79 if (length_in >= ctx->unitsize) {
80 for (offset = 0; offset <= length_in - ctx->unitsize;
81 offset += ctx->unitsize) {
82 memcpy(&sample, data_in + offset, ctx->unitsize);
83 for (p = 0; p < ctx->num_enabled_probes; p++) {
84 c = (sample & ((uint64_t) 1 << p)) ? '1' : '0';
85 ctx->linebuf[p * ctx->linebuf_len +
86 ctx->line_offset] = c;
91 /* Add a space every 8th bit. */
92 if ((ctx->spl_cnt & 7) == 0) {
93 for (p = 0; p < ctx->num_enabled_probes; p++)
94 ctx->linebuf[p * ctx->linebuf_len +
95 ctx->line_offset] = ' ';
100 if (ctx->spl_cnt >= ctx->samples_per_line) {
101 flush_linebufs(ctx, outbuf);
102 ctx->line_offset = ctx->spl_cnt = 0;
103 ctx->mark_trigger = -1;
107 sr_info("Short buffer (length_in=%" PRIu64 ").", length_in);
111 *length_out = strlen((const char *)outbuf);
116 SR_PRIV struct sr_output_format output_text_bits = {
118 .description = "Bits",
119 .df_type = SR_DF_LOGIC,