+++ /dev/null
-/*
- * This file is part of the libsigrok project.
- *
- * Copyright (C) 2014 Matthias Heidbrink <m-sigrok@heidbrink.biz>
- * Copyright (C) 2014 Bert Vermeulen <bert@biot.com> (code from atten-pps3xxx)
- *
- * 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/>.
- */
-
-/** @file
- * <em>Motech LPS-30x series</em> power supply driver
- * @internal
- */
-
-#include <errno.h>
-#include <string.h>
-
-#include "protocol.h"
-
-/** Send data packets for current measurements. */
-static void send_data(struct sr_dev_inst *sdi)
-{
- struct dev_context *devc;
- struct sr_datafeed_packet packet;
- struct sr_datafeed_analog analog;
- int i;
- float data[MAX_CHANNELS];
-
- devc = sdi->priv;
- packet.type = SR_DF_ANALOG;
- packet.payload = &analog;
- analog.channels = sdi->channels;
- analog.num_samples = 1;
-
- analog.mq = SR_MQ_VOLTAGE;
- analog.unit = SR_UNIT_VOLT;
- analog.mqflags = SR_MQFLAG_DC;
- analog.data = data;
- for (i = 0; i < devc->model->num_channels; i++)
- analog.data[i] = devc->channel_status[i].output_voltage_last; /* Value always 3.3 or 5 for channel 3, if present! */
- sr_session_send(sdi, &packet);
-
- analog.mq = SR_MQ_CURRENT;
- analog.unit = SR_UNIT_AMPERE;
- analog.mqflags = 0;
- analog.data = data;
- for (i = 0; i < devc->model->num_channels; i++)
- analog.data[i] = devc->channel_status[i].output_current_last; /* Value always 0 for channel 3, if present! */
- sr_session_send(sdi, &packet);
-
- devc->num_samples++;
-}
-
-/** Process a complete line (without CR/LF) in buf. */
-static void process_line(struct sr_dev_inst *sdi)
-{
- struct dev_context *devc;
- double dbl;
- int auxint;
-
- devc = sdi->priv;
-
- switch (devc->acq_req_pending) {
- case 0: /* Should not happen... */
- break;
- case 1: /* Waiting for data reply to request */
- /* Convert numbers */
- switch (devc->acq_req) {
- case AQ_U1: case AQ_U2: case AQ_I1: case AQ_I2:
- if (sr_atod(devc->buf, &dbl) != SR_OK) {
- sr_err("Failed to convert '%s' to double, errno=%d %s",
- devc->buf, errno, strerror(errno));
- dbl = 0.0;
- }
- break;
- case AQ_STATUS:
- if (sr_atoi(devc->buf, &auxint) != SR_OK) {
- sr_err("Failed to convert '%s' to int, errno=%d %s",
- devc->buf, errno, strerror(errno));
- auxint = 0;
- }
- break;
- default:
- break;
- }
-
- switch (devc->acq_req) {
- case AQ_U1:
- devc->channel_status[0].output_voltage_last = dbl;
- break;
- case AQ_I1:
- devc->channel_status[0].output_current_last = dbl;
- break;
- case AQ_U2:
- devc->channel_status[1].output_voltage_last = dbl;
- break;
- case AQ_I2:
- devc->channel_status[1].output_current_last = dbl;
- break;
- case AQ_STATUS: /* Process status and generate data. */
- if (lps_process_status(sdi, auxint) == SR_OK) {
- send_data(sdi);
- }
- break;
- default:
- break;
- }
-
- devc->acq_req_pending = 2;
- break;
- case 2: /* Waiting for OK after request */
- if (strcmp(devc->buf, "OK")) {
- sr_err("Unexpected reply while waiting for OK: '%s'", devc->buf);
- }
- devc->acq_req_pending = 0;
- break;
- }
-
- devc->buf[0] = '\0';
- devc->buflen = 0;
-}
-
-
-SR_PRIV int motech_lps_30x_receive_data(int fd, int revents, void *cb_data)
-{
- struct sr_dev_inst *sdi;
- struct dev_context *devc;
- struct sr_serial_dev_inst *serial;
- int len;
- gdouble elapsed_s;
-
- (void)fd;
-
- if (!(sdi = cb_data))
- return TRUE;
-
- if (!(devc = sdi->priv))
- return TRUE;
-
- serial = sdi->conn;
-
- if (revents == G_IO_IN) { /* Serial data arrived. */
- while (LINELEN_MAX - devc->buflen - 2 > 0) {
- len = serial_read(serial, devc->buf + devc->buflen, 1);
- if (len < 1)
- break;
-
- /* Eliminate whitespace at beginning of line. */
- if (g_ascii_isspace(devc->buf[0])) {
- devc->buf[0] = '\0';
- devc->buflen = 0;
- continue;
- }
-
- devc->buflen += len;
- devc->buf[devc->buflen] = '\0';
-
- /* If line complete, process msg. */
- if ((devc->buflen > 0) && ((devc->buf[devc->buflen-1] == '\r') || devc->buf[devc->buflen-1] == '\n')) {
- devc->buflen--;
- devc->buf[devc->buflen] = '\0';
-
- sr_spew("Line complete: \"%s\"", devc->buf);
- process_line(sdi);
- }
- }
- }
-
- /* If number of samples or time limit reached, stop acquisition. */
- if (devc->limit_samples && (devc->num_samples >= devc->limit_samples))
- sdi->driver->dev_acquisition_stop(sdi, cb_data);
-
- if (devc->limit_msec) {
- elapsed_s = g_timer_elapsed(devc->elapsed_msec, NULL);
- if ((elapsed_s * 1000) >= devc->limit_msec)
- sdi->driver->dev_acquisition_stop(sdi, cb_data);
- }
-
- /* Request next packet, if required. */
- if ((sdi->status == SR_ST_ACTIVE) && (devc->acq_running)){
- if (devc->acq_req_pending) {
- gint64 elapsed_us = g_get_monotonic_time() - devc->req_sent_at;
- if (elapsed_us > (REQ_TIMEOUT_MS * 1000)) {
- sr_spew("Request timeout: req=%d t=%lldus", (int)devc->acq_req, elapsed_us);
- devc->acq_req_pending = 0;
- }
- }
- if (devc->acq_req_pending == 0) {
- switch(devc->acq_req)
- {
- case AQ_NONE: /* Fall through */
- case AQ_STATUS:
- devc->acq_req = AQ_U1;
- lps_send_req(serial, "VOUT1");
- break;
- case AQ_U1:
- devc->acq_req = AQ_I1;
- lps_send_req(serial, "IOUT1");
- break;
- case AQ_I1:
- if (devc->model->num_channels == 1) {
- devc->acq_req = AQ_STATUS;
- lps_send_req(serial, "STATUS");
- } else {
- devc->acq_req = AQ_U2;
- lps_send_req(serial, "VOUT2");
- }
- break;
- case AQ_U2:
- devc->acq_req = AQ_I2;
- lps_send_req(serial, "IOUT2");
- break;
- case AQ_I2:
- devc->acq_req = AQ_STATUS;
- lps_send_req(serial, "STATUS");
- break;
- default:
- sr_err("Illegal devc->acq_req=%d", devc->acq_req);
- return SR_ERR;
- }
- devc->req_sent_at = g_get_real_time();
- devc->acq_req_pending = 1;
- }
- }
-
- return TRUE;
-}
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