+++ /dev/null
-/*
- * This file is part of the libsigrok project.
- *
- * Copyright (C) 2012 Martin Ling <martin-git@earth.li>
- * Copyright (C) 2013 Bert Vermeulen <bert@biot.com>
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include <stdlib.h>
-#include <stdarg.h>
-#include <unistd.h>
-#include <errno.h>
-#include <string.h>
-#include <math.h>
-#include <glib.h>
-#include "libsigrok.h"
-#include "libsigrok-internal.h"
-#include "protocol.h"
-
-SR_PRIV int rigol_ds_receive(int fd, int revents, void *cb_data)
-{
- struct sr_dev_inst *sdi;
- struct sr_serial_dev_inst *serial;
- struct dev_context *devc;
- struct sr_datafeed_packet packet;
- struct sr_datafeed_analog analog;
- struct sr_datafeed_logic logic;
- unsigned char buf[DIGITAL_WAVEFORM_SIZE];
- double vdiv, offset;
- float data[ANALOG_WAVEFORM_SIZE];
- int len, i, waveform_size;
- struct sr_probe *probe;
-
- (void)fd;
-
- if (!(sdi = cb_data))
- return TRUE;
-
- if (!(devc = sdi->priv))
- return TRUE;
-
- serial = sdi->conn;
-
- if (revents == G_IO_IN) {
- probe = devc->channel_frame;
- waveform_size = probe->type == SR_PROBE_ANALOG ?
- ANALOG_WAVEFORM_SIZE : DIGITAL_WAVEFORM_SIZE;
- len = serial_read(serial, buf, waveform_size - devc->num_frame_bytes);
- sr_dbg("Received %d bytes.", len);
- if (len == -1)
- return TRUE;
-
- if (devc->num_frame_bytes == 0) {
- /* Start of a new frame. */
- packet.type = SR_DF_FRAME_BEGIN;
- sr_session_send(sdi, &packet);
- }
-
- if (probe->type == SR_PROBE_ANALOG) {
- for (i = 0; i < len; i++) {
- vdiv = devc->vdiv[probe->index];
- offset = devc->vert_offset[probe->index];
- data[i] = vdiv / 25.6 * (128 - buf[i]) - offset;
- }
- analog.probes = g_slist_append(NULL, probe);
- analog.num_samples = len;
- analog.data = data;
- analog.mq = SR_MQ_VOLTAGE;
- analog.unit = SR_UNIT_VOLT;
- analog.mqflags = 0;
- packet.type = SR_DF_ANALOG;
- packet.payload = &analog;
- sr_session_send(cb_data, &packet);
- g_slist_free(analog.probes);
-
- if (len != ANALOG_WAVEFORM_SIZE)
- /* Don't have the whole frame yet. */
- return TRUE;
- } else {
- logic.length = len - 10;
- logic.unitsize = 2;
- logic.data = buf + 10;
- packet.type = SR_DF_LOGIC;
- packet.payload = &logic;
- sr_session_send(cb_data, &packet);
-
- if (len != DIGITAL_WAVEFORM_SIZE)
- /* Don't have the whole frame yet. */
- return TRUE;
- }
-
- /* End of the frame. */
- packet.type = SR_DF_FRAME_END;
- sr_session_send(sdi, &packet);
- devc->num_frame_bytes = 0;
-
- if (devc->enabled_analog_probes
- && devc->channel_frame == devc->enabled_analog_probes->data
- && devc->enabled_analog_probes->next != NULL) {
- /* We got the frame for the first analog channel, but
- * there's a second analog channel. */
- devc->channel_frame = devc->enabled_analog_probes->next->data;
- rigol_ds_send(sdi, ":WAV:DATA? CHAN%c",
- devc->channel_frame->name[2]);
- } else {
- /* Done with both analog channels in this frame. */
- if (devc->enabled_digital_probes
- && devc->channel_frame != devc->enabled_digital_probes->data) {
- /* Now we need to get the digital data. */
- devc->channel_frame = devc->enabled_digital_probes->data;
- rigol_ds_send(sdi, ":WAV:DATA? DIG");
- } else if (++devc->num_frames == devc->limit_frames) {
- /* End of last frame. */
- packet.type = SR_DF_END;
- sr_session_send(sdi, &packet);
- sdi->driver->dev_acquisition_stop(sdi, cb_data);
- } else {
- /* Get the next frame, starting with the first analog channel. */
- if (devc->enabled_analog_probes) {
- devc->channel_frame = devc->enabled_analog_probes->data;
- rigol_ds_send(sdi, ":WAV:DATA? CHAN%c",
- devc->channel_frame->name[2]);
- } else {
- devc->channel_frame = devc->enabled_digital_probes->data;
- rigol_ds_send(sdi, ":WAV:DATA? DIG");
- }
- }
- }
- }
-
- return TRUE;
-}
-
-SR_PRIV int rigol_ds_send(const struct sr_dev_inst *sdi, const char *format, ...)
-{
- va_list args;
- char buf[256];
- int len, out, ret;
-
- va_start(args, format);
- len = vsnprintf(buf, 255, format, args);
- va_end(args);
- strcat(buf, "\n");
- len++;
- out = serial_write(sdi->conn, buf, len);
- buf[len - 1] = '\0';
- if (out != len) {
- sr_dbg("Only sent %d/%d bytes of '%s'.", out, len, buf);
- ret = SR_ERR;
- } else {
- sr_spew("Sent '%s'.", buf);
- ret = SR_OK;
- }
-
- return ret;
-}
-
-static int get_cfg(const struct sr_dev_inst *sdi, char *cmd, char *reply)
-{
- int len;
-
- if (rigol_ds_send(sdi, cmd) != SR_OK)
- return SR_ERR;
-
- if ((len = serial_read(sdi->conn, reply, 255)) < 0)
- return SR_ERR;
- reply[len] = '\0';
- sr_spew("Received '%s'.", reply);
-
- return SR_OK;
-}
-
-static int get_cfg_float(const struct sr_dev_inst *sdi, char *cmd, float *f)
-{
- char buf[256], *e;
-
- if (get_cfg(sdi, cmd, buf) != SR_OK)
- return SR_ERR;
- *f = strtof(buf, &e);
- if (e == buf || (fpclassify(*f) & (FP_ZERO | FP_NORMAL)) == 0) {
- sr_dbg("failed to parse response to '%s': '%s'", cmd, buf);
- return SR_ERR;
- }
-
- return SR_OK;
-}
-
-static int get_cfg_string(const struct sr_dev_inst *sdi, char *cmd, char **buf)
-{
-
- if (!(*buf = g_try_malloc0(256)))
- return SR_ERR_MALLOC;
-
- if (get_cfg(sdi, cmd, *buf) != SR_OK)
- return SR_ERR;
-
- return SR_OK;
-}
-
-SR_PRIV int rigol_ds_get_dev_cfg(const struct sr_dev_inst *sdi)
-{
- struct dev_context *devc;
- char *t_s, *cmd;
- int i, res;
-
- devc = sdi->priv;
-
- /* Analog channel state. */
- if (get_cfg_string(sdi, ":CHAN1:DISP?", &t_s) != SR_OK)
- return SR_ERR;
- devc->analog_channels[0] = !strcmp(t_s, "ON") ? TRUE : FALSE;
- g_free(t_s);
- if (get_cfg_string(sdi, ":CHAN2:DISP?", &t_s) != SR_OK)
- return SR_ERR;
- devc->analog_channels[1] = !strcmp(t_s, "ON") ? TRUE : FALSE;
- g_free(t_s);
- sr_dbg("Current analog channel state CH1 %s CH2 %s",
- devc->analog_channels[0] ? "on" : "off",
- devc->analog_channels[1] ? "on" : "off");
-
- /* Digital channel state. */
- if (devc->has_digital) {
- sr_dbg("Current digital channel state:");
- for (i = 0; i < 16; i++) {
- cmd = g_strdup_printf(":DIG%d:TURN?", i);
- res = get_cfg_string(sdi, cmd, &t_s);
- g_free(cmd);
- if (res != SR_OK)
- return SR_ERR;
- devc->digital_channels[i] = !strcmp(t_s, "ON") ? TRUE : FALSE;
- g_free(t_s);
- sr_dbg("D%d: %s", i, devc->digital_channels[i] ? "on" : "off");
- }
- }
-
- /* Timebase. */
- if (get_cfg_float(sdi, ":TIM:SCAL?", &devc->timebase) != SR_OK)
- return SR_ERR;
- sr_dbg("Current timebase %f", devc->timebase);
-
- /* Vertical gain. */
- if (get_cfg_float(sdi, ":CHAN1:SCAL?", &devc->vdiv[0]) != SR_OK)
- return SR_ERR;
- if (get_cfg_float(sdi, ":CHAN2:SCAL?", &devc->vdiv[1]) != SR_OK)
- return SR_ERR;
- sr_dbg("Current vertical gain CH1 %f CH2 %f", devc->vdiv[0], devc->vdiv[1]);
-
- /* Vertical offset. */
- if (get_cfg_float(sdi, ":CHAN1:OFFS?", &devc->vert_offset[0]) != SR_OK)
- return SR_ERR;
- if (get_cfg_float(sdi, ":CHAN2:OFFS?", &devc->vert_offset[1]) != SR_OK)
- return SR_ERR;
- sr_dbg("Current vertical offset CH1 %f CH2 %f", devc->vert_offset[0],
- devc->vert_offset[1]);
-
- /* Coupling. */
- if (get_cfg_string(sdi, ":CHAN1:COUP?", &devc->coupling[0]) != SR_OK)
- return SR_ERR;
- if (get_cfg_string(sdi, ":CHAN2:COUP?", &devc->coupling[1]) != SR_OK)
- return SR_ERR;
- sr_dbg("Current coupling CH1 %s CH2 %s", devc->coupling[0],
- devc->coupling[1]);
-
- /* Trigger source. */
- if (get_cfg_string(sdi, ":TRIG:EDGE:SOUR?", &devc->trigger_source) != SR_OK)
- return SR_ERR;
- sr_dbg("Current trigger source %s", devc->trigger_source);
-
- /* Horizontal trigger position. */
- if (get_cfg_float(sdi, ":TIM:OFFS?", &devc->horiz_triggerpos) != SR_OK)
- return SR_ERR;
- sr_dbg("Current horizontal trigger position %f", devc->horiz_triggerpos);
-
- /* Trigger slope. */
- if (get_cfg_string(sdi, ":TRIG:EDGE:SLOP?", &devc->trigger_slope) != SR_OK)
- return SR_ERR;
- sr_dbg("Current trigger slope %s", devc->trigger_slope);
-
- return SR_OK;
-}
projects / libsigrok.git / blobdiff