libsigrok/hardware/cem-dt-885x/protocol.h

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