2 * This file is part of the libsigrok project.
4 * Copyright (C) 2013 Matthias Heidbrink <m-sigrok@heidbrink.biz>
6 * This program is free software: you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation, either version 3 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program. If not, see <http://www.gnu.org/licenses/>.
20 #ifndef LIBSIGROK_HARDWARE_GMC_MH_1X_2X_PROTOCOL_H
21 #define LIBSIGROK_HARDWARE_GMC_MH_1X_2X_PROTOCOL_H
25 #include "libsigrok.h"
26 #include "libsigrok-internal.h"
28 /* Message logging helpers with subsystem-specific prefix string. */
29 #define LOG_PREFIX "gmc-mh-1x-2x: "
30 #define sr_log(l, s, args...) sr_log(l, LOG_PREFIX s, ## args)
31 #define sr_spew(s, args...) sr_spew(LOG_PREFIX s, ## args)
32 #define sr_dbg(s, args...) sr_dbg(LOG_PREFIX s, ## args)
33 #define sr_info(s, args...) sr_info(LOG_PREFIX s, ## args)
34 #define sr_warn(s, args...) sr_warn(LOG_PREFIX s, ## args)
35 #define sr_err(s, args...) sr_err(LOG_PREFIX s, ## args)
37 #define GMC_BUFSIZE 266
39 /** Message ID bits 4, 5 */
40 #define MSGID_MASK 0x30 /**< Mask to get message ID bits */
41 #define MSGID_INF 0x00 /**< Start of message with device info */
42 #define MSGID_D10 0x10 /**< Start of data message, non-displayed intermediate */
43 #define MSGID_DTA 0x20 /**< Start of data message, displayed, averaged */
44 #define MSGID_DATA 0x30 /**< Data byte in message */
46 #define MSGC_MASK 0x0f /**< Mask to get message byte contents */
48 #define MSGSRC_MASK 0xc0 /**< Mask to get bits related to message source */
50 #define bc(x) (x & MSGC_MASK) /**< Get contents from a byte */
52 #define MASK_6BITS 0x3f /**< Mask lower six bits. */
54 /** Internal multimeter model codes. In opposite to the multimeter models from
55 * protocol (see decode_model()), these codes allow working with ranges.
58 SR_METRAHIT_NONE = 0, /**< Value for uninitialized variable */
60 SR_METRAHIT_13S14A = 13,
65 SR_METRAHIT_16X = SR_METRAHIT_16I, /**< All Metrahit 16 */
66 /* A Metrahit 17 exists, but seems not to have an IR interface. */
68 SR_METRAHIT_2X = 20, /**< For model type comparisons */
69 SR_METRAHIT_22SM = 22,
72 SR_METRAHIT_25SM = 25,
78 /** Convert GMC model code in send mode to sigrok-internal one. */
79 SR_PRIV int sr_gmc_decode_model_sm(guchar mcode);
81 /** Convert GMC model code in bidirectional mode to sigrok-internal one.
82 \param[in] mcode Model code.
86 SR_PRIV int sr_gmc_decode_model_bidi(guchar mcode);
88 /** Create 14-bytes (42 byte) message used in bidirectional mode.
89 * \param[in] addr Target address. 0..15, 0=Broadcast.
90 * \param[in] func Function code.
91 * \param[in] params Further parameters, &char[9]. Unused bytes must be 0.
92 * \param[out] buf &guchar[42] Output buffer (3*14).
95 void create_msg_14(guchar addr, guchar func, guchar* params, guchar* buf);
97 /** Get model string from sigrok-internal model code.
99 SR_PRIV const char* sr_gmc_model_str(enum model mcode);
101 /** Private, per-device-instance driver context. */
103 /* Model-specific information */
104 enum model model; /**< Model code. */
106 /* Acquisition settings */
107 uint64_t limit_samples; /**< Target number of samples */
108 uint64_t limit_msec; /**< Target sampling time */
110 /* Opaque pointer passed in by frontend. */
113 /* Operational state */
114 gboolean settings_ok; /**< Settings msg received yet. */
115 int msg_type; /**< Message type (MSGID_INF, ...). */
116 int msg_len; /**< Message lengh (valid when msg, curr. type known).*/
117 int mq; /**< Measured quantity */
118 int unit; /**< Measured unit */
119 uint64_t mqflags; /**< Measured quantity flags */
120 float value; /**< Measured value */
121 float scale; /**< Scale for value. */
122 int8_t scale1000; /**< Additional scale factor 1000^x. */
123 gboolean vmains_29S; /**< Measured ctmv is V mains (29S only). */
125 /* Temporary state across callbacks */
126 uint64_t num_samples; /**< Current #samples for limit_samples */
127 GTimer* elapsed_msec; /**< Used for sampling with limit_msec */
128 unsigned char buf[GMC_BUFSIZE]; /**< Buffer for read callback */
129 int buflen; /**< Data len in buf */
132 SR_PRIV int gmc_mh_1x_2x_receive_data(int fd, int revents, void *cb_data);