122 lines
3.7 KiB
C
122 lines
3.7 KiB
C
/*
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* This file is part of the libsigrok project.
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*
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* Copyright (C) 2014 Matthias Heidbrink <m-sigrok@heidbrink.biz>
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* Copyright (C) 2014 Bert Vermeulen <bert@biot.com> (code from atten-pps3xxx)
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/** @file
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* <em>Motech LPS-30x series</em> power supply driver
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* @internal
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*/
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#ifndef LIBSIGROK_HARDWARE_MOTECH_LPS_30X_PROTOCOL_H
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#define LIBSIGROK_HARDWARE_MOTECH_LPS_30X_PROTOCOL_H
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#include <stdint.h>
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#include <glib.h>
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#include "libsigrok.h"
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#include "libsigrok-internal.h"
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SR_PRIV int lps_process_status(struct sr_dev_inst* sdi, int stat);
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SR_PRIV int lps_send_req(struct sr_serial_dev_inst *serial, const char* fmt, ...);
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#define LOG_PREFIX "motech-lps-30x"
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#define LINELEN_MAX 50 /**< Max. line length for requests */
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#define REQ_TIMEOUT_MS 250 /**< Timeout [ms] for single request. */
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#define MAX_CHANNELS 3
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typedef enum {
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LPS_UNKNOWN = 0,/**< Unknown model (used during detection process) */
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LPS_301, /**< Motech/Amrel LPS-301, 1 output */
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LPS_302, /**< Motech/Amrel LPS-302, 1 output */
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LPS_303, /**< Motech/Amrel LPS-303, 1 output */
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LPS_304, /**< Motech/Amrel LPS-304, 3 outputs */
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LPS_305, /**< Motech/Amrel LPS-305, 3 outputs */
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} lps_modelid;
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/** Channel specification */
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struct channel_spec {
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/* Min, max, step. */
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gdouble voltage[3];
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gdouble current[3];
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};
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/** Model properties specification */
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struct lps_modelspec {
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lps_modelid modelid;
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const char* modelstr;
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uint8_t num_channels;
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struct channel_spec channels[3];
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};
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/** Used to implement a little state machine to query all required values in a row. */
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typedef enum {
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AQ_NONE,
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AQ_U1,
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AQ_I1,
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AQ_I2,
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AQ_U2,
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AQ_STATUS,
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} acquisition_req;
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/** Status of a single channel. */
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struct channel_status {
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/* Channel information (struct channel_info*). data (struct) owned by sdi, just a reference to address a single channel. */
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GSList* info;
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/* Received from device. */
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gdouble output_voltage_last;
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gdouble output_current_last;
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gboolean output_enabled; /**< Also used when set. */
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gboolean cc_mode; /**< Constant current mode. If false, constant voltage mode. */
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/* Set by frontend. */
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gdouble output_voltage_max;
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gdouble output_current_max;
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};
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/** Private, per-device-instance driver context. */
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struct dev_context {
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/* Model-specific information */
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struct lps_modelspec* model;
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/* Acquisition status */
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gboolean acq_running; /**< Aquisition is running. */
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uint64_t limit_samples; /**< Target number of samples */
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uint64_t limit_msec; /**< Target sampling time */
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acquisition_req acq_req; /**< Current request. */
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uint8_t acq_req_pending; /**< Request pending. 0=none, 1=reply, 2=OK */
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/* Operational state */
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struct channel_status channel_status[MAX_CHANNELS];
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guint8 tracking_mode; /**< 0=off, 1=Tracking from CH1, 2=Tracking from CH2. */
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/* Temporary state across callbacks */
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int64_t req_sent_at; /**< Request sent. */
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uint64_t num_samples; /**< Current #samples for limit_samples */
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GTimer *elapsed_msec; /**< Used for sampling with limit_msec */
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gchar buf[LINELEN_MAX]; /**< Buffer for read callback */
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int buflen; /**< Data len in buf */
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};
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SR_PRIV int motech_lps_30x_receive_data(int fd, int revents, void *cb_data);
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#endif
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