projects / libsigrok.git / blame
| Commit | Line | Data |
|---|---|---|
| f4816ac6 ML |
1 | /* |
| 2 | * This file is part of the libsigrok project. | |
| 3 | * | |
| 4 | * Copyright (C) 2012 Martin Ling <martin-git@earth.li> | |
| 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 <stdlib.h> | |
| e0b7d23c ML |
21 | #include <stdarg.h> |
| 22 | #include <unistd.h> | |
| 23 | #include <errno.h> | |
| f4816ac6 ML |
24 | #include <glib.h> |
| 25 | #include "libsigrok.h" | |
| 26 | #include "libsigrok-internal.h" | |
| 27 | #include "protocol.h" | |
| 28 | ||
| 29 | SR_PRIV int rigol_ds1xx2_receive_data(int fd, int revents, void *cb_data) | |
| 30 | { | |
| e0b7d23c | 31 | struct sr_dev_inst *sdi; |
| f4816ac6 | 32 | struct dev_context *devc; |
| e0b7d23c ML |
33 | struct sr_datafeed_packet packet; |
| 34 | struct sr_datafeed_analog analog; | |
| 35 | unsigned char buf[WAVEFORM_SIZE]; | |
| 36 | float data[WAVEFORM_SIZE]; | |
| 37 | int len, i; | |
| f4816ac6 ML |
38 | |
| 39 | if (!(sdi = cb_data)) | |
| 40 | return TRUE; | |
| 41 | ||
| 42 | if (!(devc = sdi->priv)) | |
| 43 | return TRUE; | |
| 44 | ||
| 45 | if (revents == G_IO_IN) { | |
| e0b7d23c ML |
46 | len = read(fd, buf, WAVEFORM_SIZE); |
| 47 | sr_dbg("received %d", len); | |
| 48 | if (len == -1) | |
| 49 | return TRUE; | |
| 50 | for (i = 0; i < len; i++) | |
| 51 | data[i] = devc->scale / 25.6 * (128 - buf[i]) - devc->offset; | |
| 52 | analog.num_samples = len; | |
| 53 | analog.data = data; | |
| 54 | analog.mq = SR_MQ_VOLTAGE; | |
| 55 | analog.unit = SR_UNIT_VOLT; | |
| 56 | analog.mqflags = 0; | |
| 57 | packet.type = SR_DF_ANALOG; | |
| 58 | packet.payload = &analog; | |
| 59 | sr_session_send(cb_data, &packet); | |
| 60 | if (++devc->num_frames == devc->limit_frames) | |
| 61 | sdi->driver->dev_acquisition_stop(sdi, cb_data); | |
| 62 | else | |
| 63 | rigol_ds1xx2_send_data(fd, ":WAV:DATA?\n"); | |
| f4816ac6 ML |
64 | } |
| 65 | ||
| 66 | return TRUE; | |
| 67 | } | |
| e0b7d23c ML |
68 | |
| 69 | SR_PRIV int rigol_ds1xx2_send_data(int fd, const char *format, ...) | |
| 70 | { | |
| 71 | va_list args; | |
| 72 | char buf[256]; | |
| 73 | va_start(args, format); | |
| 74 | int len = vsprintf(buf, format, args); | |
| 75 | va_end(args); | |
| 76 | len = write(fd, buf, len); | |
| 77 | sr_dbg("sent %s", buf); | |
| 78 | return len; | |
| 79 | } |