151 lines
4.5 KiB
C
151 lines
4.5 KiB
C
/*
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* This file is part of the libsigrok project.
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*
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* Copyright (C) 2013 Bert Vermeulen <bert@biot.com>
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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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#ifndef LIBSIGROK_HARDWARE_CEM_DT_885X_PROTOCOL_H
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#define LIBSIGROK_HARDWARE_CEM_DT_885X_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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/* Message logging helpers with subsystem-specific prefix string. */
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#define LOG_PREFIX "cem-dt-885x: "
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#define sr_log(l, s, args...) sr_log(l, LOG_PREFIX s, ## args)
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#define sr_spew(s, args...) sr_spew(LOG_PREFIX s, ## args)
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#define sr_dbg(s, args...) sr_dbg(LOG_PREFIX s, ## args)
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#define sr_info(s, args...) sr_info(LOG_PREFIX s, ## args)
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#define sr_warn(s, args...) sr_warn(LOG_PREFIX s, ## args)
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#define sr_err(s, args...) sr_err(LOG_PREFIX s, ## args)
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/* When retrieving samples from device memory, group this many
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* together into a sigrok packet. */
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#define SAMPLES_PER_PACKET 50
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/* Various temporary storage, at least 8 bytes. */
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#define BUF_SIZE SAMPLES_PER_PACKET * 2
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/* When in hold mode, force the last measurement out at this interval.
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* We're using 50ms, which duplicates the non-hold 20Hz update rate. */
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#define HOLD_REPEAT_INTERVAL 50 * 1000
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enum {
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TOKEN_WEIGHT_TIME_FAST = 0x02,
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TOKEN_WEIGHT_TIME_SLOW = 0x03,
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TOKEN_HOLD_MAX = 0x04,
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TOKEN_HOLD_MIN = 0x05,
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TOKEN_TIME = 0x06,
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TOKEN_MEAS_RANGE_OVER = 0x07,
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TOKEN_MEAS_RANGE_UNDER = 0x08,
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TOKEN_STORE_FULL = 0x09,
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TOKEN_RECORDING_ON = 0x0a,
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TOKEN_MEAS_WAS_READOUT = 0x0b,
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TOKEN_MEAS_WAS_BARGRAPH = 0x0c,
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TOKEN_MEASUREMENT = 0xd,
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TOKEN_HOLD_NONE = 0x0e,
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TOKEN_BATTERY_LOW = 0x0f,
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TOKEN_MEAS_RANGE_OK = 0x11,
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TOKEN_STORE_OK = 0x19,
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TOKEN_RECORDING_OFF = 0x1a,
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TOKEN_WEIGHT_FREQ_A = 0x1b,
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TOKEN_WEIGHT_FREQ_C = 0x1c,
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TOKEN_BATTERY_OK = 0x1f,
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TOKEN_MEAS_RANGE_30_80 = 0x30,
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TOKEN_MEAS_RANGE_30_130 = 0x40,
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TOKEN_MEAS_RANGE_50_100 = 0x4b,
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TOKEN_MEAS_RANGE_80_130 = 0x4c,
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};
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enum {
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CMD_TOGGLE_RECORDING = 0x55,
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CMD_TOGGLE_WEIGHT_FREQ = 0x99,
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CMD_TOGGLE_WEIGHT_TIME = 0x77,
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CMD_TOGGLE_HOLD_MAX_MIN = 0x11,
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CMD_TOGGLE_MEAS_RANGE = 0x88,
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CMD_TOGGLE_POWER_OFF = 0x33,
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CMD_TRANSFER_MEMORY = 0xac,
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};
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enum {
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RECORD_DBA = 0xaa,
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RECORD_DBC = 0xcc,
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RECORD_DATA = 0xac,
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RECORD_END = 0xdd,
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};
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enum {
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DATA_SOURCE_LIVE,
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DATA_SOURCE_MEMORY,
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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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/* Device state */
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uint64_t cur_mqflags;
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int recording;
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int cur_meas_range;
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int cur_data_source;
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/* Acquisition settings */
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uint64_t limit_samples;
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/* Operational state */
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int state;
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uint64_t num_samples;
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gboolean enable_data_source_memory;
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/* Temporary state across callbacks */
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void *cb_data;
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unsigned char cmd;
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unsigned char token;
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int buf_len;
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unsigned char buf[BUF_SIZE];
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float last_spl;
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gint64 hold_last_sent;
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};
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/* Parser state machine. */
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enum {
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ST_INIT,
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ST_GET_TOKEN,
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ST_GET_DATA,
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ST_GET_LOG_HEADER,
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ST_GET_LOG_RECORD_META,
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ST_GET_LOG_RECORD_DATA,
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};
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SR_PRIV int cem_dt_885x_receive_data(int fd, int revents, void *cb_data);
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SR_PRIV int cem_dt_885x_recording_set(const struct sr_dev_inst *sdi, gboolean start);
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SR_PRIV gboolean cem_dt_885x_recording_get(const struct sr_dev_inst *sdi,
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int *state);
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SR_PRIV int cem_dt_885x_weight_freq_get(const struct sr_dev_inst *sdi);
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SR_PRIV int cem_dt_885x_weight_freq_set(const struct sr_dev_inst *sdi, int freqw);
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SR_PRIV int cem_dt_885x_weight_time_get(const struct sr_dev_inst *sdi);
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SR_PRIV int cem_dt_885x_weight_time_set(const struct sr_dev_inst *sdi, int timew);
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SR_PRIV int cem_dt_885x_holdmode_get(const struct sr_dev_inst *sdi,
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gboolean *holdmode);
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SR_PRIV int cem_dt_885x_holdmode_set(const struct sr_dev_inst *sdi, int holdmode);
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SR_PRIV int cem_dt_885x_meas_range_get(const struct sr_dev_inst *sdi,
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uint64_t *low, uint64_t *high);
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SR_PRIV int cem_dt_885x_meas_range_set(const struct sr_dev_inst *sdi,
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uint64_t low, uint64_t high);
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SR_PRIV int cem_dt_885x_power_off(const struct sr_dev_inst *sdi);
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#endif
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