]> sigrok.org Git - libsigrok.git/blobdiff - src/hardware/hameg-hmo/protocol.c
hameg-hmo: free memory that was allocated by SCPI get routines
[libsigrok.git] / src / hardware / hameg-hmo / protocol.c
index 60731ec46574a35f98f3594d96b523039e55a0a4..26dac0cb037f34de3a8e370bc2d74a99285a799d 100644 (file)
@@ -2,6 +2,7 @@
  * This file is part of the libsigrok project.
  *
  * Copyright (C) 2013 poljar (Damir Jelić) <poljarinho@gmail.com>
+ * Copyright (C) 2018 Guido Trentalancia <guido@trentalancia.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
 #include "scpi.h"
 #include "protocol.h"
 
+SR_PRIV void hmo_queue_logic_data(struct dev_context *devc,
+                                 size_t group, GByteArray *pod_data);
+SR_PRIV void hmo_send_logic_packet(struct sr_dev_inst *sdi,
+                                  struct dev_context *devc);
+SR_PRIV void hmo_cleanup_logic_data(struct dev_context *devc);
+
 static const char *hameg_scpi_dialect[] = {
-       [SCPI_CMD_GET_DIG_DATA]             = ":POD%d:DATA?",
-       [SCPI_CMD_GET_TIMEBASE]             = ":TIM:SCAL?",
-       [SCPI_CMD_SET_TIMEBASE]             = ":TIM:SCAL %s",
-       [SCPI_CMD_GET_COUPLING]             = ":CHAN%d:COUP?",
-       [SCPI_CMD_SET_COUPLING]             = ":CHAN%d:COUP %s",
-       [SCPI_CMD_GET_SAMPLE_RATE]          = ":ACQ:SRAT?",
-       [SCPI_CMD_GET_SAMPLE_RATE_LIVE]     = ":%s:DATA:POINTS?",
-       [SCPI_CMD_GET_ANALOG_DATA]          = ":CHAN%d:DATA?",
-       [SCPI_CMD_GET_VERTICAL_DIV]         = ":CHAN%d:SCAL?",
-       [SCPI_CMD_SET_VERTICAL_DIV]         = ":CHAN%d:SCAL %s",
-       [SCPI_CMD_GET_DIG_POD_STATE]        = ":POD%d:STAT?",
-       [SCPI_CMD_SET_DIG_POD_STATE]        = ":POD%d:STAT %d",
-       [SCPI_CMD_GET_TRIGGER_SLOPE]        = ":TRIG:A:EDGE:SLOP?",
-       [SCPI_CMD_SET_TRIGGER_SLOPE]        = ":TRIG:A:EDGE:SLOP %s",
-       [SCPI_CMD_GET_TRIGGER_SOURCE]       = ":TRIG:A:SOUR?",
-       [SCPI_CMD_SET_TRIGGER_SOURCE]       = ":TRIG:A:SOUR %s",
-       [SCPI_CMD_GET_DIG_CHAN_STATE]       = ":LOG%d:STAT?",
-       [SCPI_CMD_SET_DIG_CHAN_STATE]       = ":LOG%d:STAT %d",
-       [SCPI_CMD_GET_VERTICAL_OFFSET]      = ":CHAN%d:POS?",
-       [SCPI_CMD_GET_HORIZ_TRIGGERPOS]     = ":TIM:POS?",
-       [SCPI_CMD_SET_HORIZ_TRIGGERPOS]     = ":TIM:POS %s",
-       [SCPI_CMD_GET_ANALOG_CHAN_STATE]    = ":CHAN%d:STAT?",
-       [SCPI_CMD_SET_ANALOG_CHAN_STATE]    = ":CHAN%d:STAT %d",
+       [SCPI_CMD_GET_DIG_DATA]               = ":FORM UINT,8;:POD%d:DATA?",
+       [SCPI_CMD_GET_TIMEBASE]               = ":TIM:SCAL?",
+       [SCPI_CMD_SET_TIMEBASE]               = ":TIM:SCAL %s",
+       [SCPI_CMD_GET_HORIZONTAL_DIV]         = ":TIM:DIV?",
+       [SCPI_CMD_GET_COUPLING]               = ":CHAN%d:COUP?",
+       [SCPI_CMD_SET_COUPLING]               = ":CHAN%d:COUP %s",
+       [SCPI_CMD_GET_SAMPLE_RATE]            = ":ACQ:SRAT?",
+       [SCPI_CMD_GET_ANALOG_DATA]            = ":FORM:BORD %s;" \
+                                               ":FORM REAL,32;:CHAN%d:DATA?",
+       [SCPI_CMD_GET_VERTICAL_SCALE]         = ":CHAN%d:SCAL?",
+       [SCPI_CMD_SET_VERTICAL_SCALE]         = ":CHAN%d:SCAL %s",
+       [SCPI_CMD_GET_DIG_POD_STATE]          = ":POD%d:STAT?",
+       [SCPI_CMD_SET_DIG_POD_STATE]          = ":POD%d:STAT %d",
+       [SCPI_CMD_GET_TRIGGER_SOURCE]         = ":TRIG:A:SOUR?",
+       [SCPI_CMD_SET_TRIGGER_SOURCE]         = ":TRIG:A:SOUR %s",
+       [SCPI_CMD_GET_TRIGGER_SLOPE]          = ":TRIG:A:EDGE:SLOP?",
+       [SCPI_CMD_SET_TRIGGER_SLOPE]          = ":TRIG:A:TYPE EDGE;:TRIG:A:EDGE:SLOP %s",
+       [SCPI_CMD_GET_TRIGGER_PATTERN]        = ":TRIG:A:PATT:SOUR?",
+       [SCPI_CMD_SET_TRIGGER_PATTERN]        = ":TRIG:A:TYPE LOGIC;" \
+                                               ":TRIG:A:PATT:FUNC AND;" \
+                                               ":TRIG:A:PATT:COND \"TRUE\";" \
+                                               ":TRIG:A:PATT:MODE OFF;" \
+                                               ":TRIG:A:PATT:SOUR \"%s\"",
+       [SCPI_CMD_GET_HIGH_RESOLUTION]        = ":ACQ:HRES?",
+       [SCPI_CMD_SET_HIGH_RESOLUTION]        = ":ACQ:HRES %s",
+       [SCPI_CMD_GET_PEAK_DETECTION]         = ":ACQ:PEAK?",
+       [SCPI_CMD_SET_PEAK_DETECTION]         = ":ACQ:PEAK %s",
+       [SCPI_CMD_GET_DIG_CHAN_STATE]         = ":LOG%d:STAT?",
+       [SCPI_CMD_SET_DIG_CHAN_STATE]         = ":LOG%d:STAT %d",
+       [SCPI_CMD_GET_VERTICAL_OFFSET]        = ":CHAN%d:POS?",
+       [SCPI_CMD_GET_HORIZ_TRIGGERPOS]       = ":TIM:POS?",
+       [SCPI_CMD_SET_HORIZ_TRIGGERPOS]       = ":TIM:POS %s",
+       [SCPI_CMD_GET_ANALOG_CHAN_STATE]      = ":CHAN%d:STAT?",
+       [SCPI_CMD_SET_ANALOG_CHAN_STATE]      = ":CHAN%d:STAT %d",
+       [SCPI_CMD_GET_PROBE_UNIT]             = ":PROB%d:SET:ATT:UNIT?",
+       [SCPI_CMD_GET_DIG_POD_THRESHOLD]      = ":POD%d:THR?",
+       [SCPI_CMD_SET_DIG_POD_THRESHOLD]      = ":POD%d:THR %s",
+       [SCPI_CMD_GET_DIG_POD_USER_THRESHOLD] = ":POD%d:THR:UDL%d?",
+       [SCPI_CMD_SET_DIG_POD_USER_THRESHOLD] = ":POD%d:THR:UDL%d %s",
+};
+
+static const char *rohde_schwarz_log_not_pod_scpi_dialect[] = {
+       [SCPI_CMD_GET_DIG_DATA]               = ":FORM UINT,8;:LOG%d:DATA?",
+       [SCPI_CMD_GET_TIMEBASE]               = ":TIM:SCAL?",
+       [SCPI_CMD_SET_TIMEBASE]               = ":TIM:SCAL %s",
+       [SCPI_CMD_GET_HORIZONTAL_DIV]         = ":TIM:DIV?",
+       [SCPI_CMD_GET_COUPLING]               = ":CHAN%d:COUP?",
+       [SCPI_CMD_SET_COUPLING]               = ":CHAN%d:COUP %s",
+       [SCPI_CMD_GET_SAMPLE_RATE]            = ":ACQ:SRAT?",
+       [SCPI_CMD_GET_ANALOG_DATA]            = ":FORM:BORD %s;" \
+                                               ":FORM REAL,32;:CHAN%d:DATA?",
+       [SCPI_CMD_GET_VERTICAL_SCALE]         = ":CHAN%d:SCAL?",
+       [SCPI_CMD_SET_VERTICAL_SCALE]         = ":CHAN%d:SCAL %s",
+       [SCPI_CMD_GET_DIG_POD_STATE]          = ":LOG%d:STAT?",
+       [SCPI_CMD_SET_DIG_POD_STATE]          = ":LOG%d:STAT %d",
+       [SCPI_CMD_GET_TRIGGER_SOURCE]         = ":TRIG:A:SOUR?",
+       [SCPI_CMD_SET_TRIGGER_SOURCE]         = ":TRIG:A:SOUR %s",
+       [SCPI_CMD_GET_TRIGGER_SLOPE]          = ":TRIG:A:EDGE:SLOP?",
+       [SCPI_CMD_SET_TRIGGER_SLOPE]          = ":TRIG:A:TYPE EDGE;:TRIG:A:EDGE:SLOP %s",
+       [SCPI_CMD_GET_TRIGGER_PATTERN]        = ":TRIG:A:PATT:SOUR?",
+       [SCPI_CMD_SET_TRIGGER_PATTERN]        = ":TRIG:A:TYPE LOGIC;" \
+                                               ":TRIG:A:PATT:FUNC AND;" \
+                                               ":TRIG:A:PATT:COND \"TRUE\";" \
+                                               ":TRIG:A:PATT:MODE OFF;" \
+                                               ":TRIG:A:PATT:SOUR \"%s\"",
+       [SCPI_CMD_GET_HIGH_RESOLUTION]        = ":ACQ:HRES?",
+       [SCPI_CMD_SET_HIGH_RESOLUTION]        = ":ACQ:HRES %s",
+       [SCPI_CMD_GET_PEAK_DETECTION]         = ":ACQ:PEAK?",
+       [SCPI_CMD_SET_PEAK_DETECTION]         = ":ACQ:PEAK %s",
+       [SCPI_CMD_GET_DIG_CHAN_STATE]         = ":LOG%d:STAT?",
+       [SCPI_CMD_SET_DIG_CHAN_STATE]         = ":LOG%d:STAT %d",
+       [SCPI_CMD_GET_VERTICAL_OFFSET]        = ":CHAN%d:POS?", /* Might not be supported on RTB200x... */
+       [SCPI_CMD_GET_HORIZ_TRIGGERPOS]       = ":TIM:POS?",
+       [SCPI_CMD_SET_HORIZ_TRIGGERPOS]       = ":TIM:POS %s",
+       [SCPI_CMD_GET_ANALOG_CHAN_STATE]      = ":CHAN%d:STAT?",
+       [SCPI_CMD_SET_ANALOG_CHAN_STATE]      = ":CHAN%d:STAT %d",
+       [SCPI_CMD_GET_PROBE_UNIT]             = ":PROB%d:SET:ATT:UNIT?",
+       [SCPI_CMD_GET_DIG_POD_THRESHOLD]      = ":DIG%d:TECH?",
+       [SCPI_CMD_SET_DIG_POD_THRESHOLD]      = ":DIG%d:TECH %s",
+       [SCPI_CMD_GET_DIG_POD_USER_THRESHOLD] = ":DIG%d:THR?",
+       [SCPI_CMD_SET_DIG_POD_USER_THRESHOLD] = ":DIG%d:THR %s",
 };
 
-static const uint32_t hmo_devopts[] = {
+static const uint32_t devopts[] = {
        SR_CONF_OSCILLOSCOPE,
+       SR_CONF_LIMIT_SAMPLES | SR_CONF_SET,
        SR_CONF_LIMIT_FRAMES | SR_CONF_GET | SR_CONF_SET,
-       SR_CONF_TRIGGER_SOURCE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
+       SR_CONF_SAMPLERATE | SR_CONF_GET,
        SR_CONF_TIMEBASE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
        SR_CONF_NUM_HDIV | SR_CONF_GET,
-       SR_CONF_TRIGGER_SLOPE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
        SR_CONF_HORIZ_TRIGGERPOS | SR_CONF_GET | SR_CONF_SET,
-       SR_CONF_SAMPLERATE | SR_CONF_GET,
+       SR_CONF_TRIGGER_SOURCE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
+       SR_CONF_TRIGGER_SLOPE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
+       SR_CONF_TRIGGER_PATTERN | SR_CONF_GET | SR_CONF_SET,
+       SR_CONF_HIGH_RESOLUTION | SR_CONF_GET | SR_CONF_SET,
+       SR_CONF_PEAK_DETECTION | SR_CONF_GET | SR_CONF_SET,
 };
 
-static const uint32_t hmo_analog_devopts[] = {
+static const uint32_t devopts_cg_analog[] = {
        SR_CONF_NUM_VDIV | SR_CONF_GET,
-       SR_CONF_COUPLING | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
        SR_CONF_VDIV | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
+       SR_CONF_COUPLING | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
+};
+
+static const uint32_t devopts_cg_digital[] = {
+       SR_CONF_LOGIC_THRESHOLD | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
+       SR_CONF_LOGIC_THRESHOLD_CUSTOM | SR_CONF_GET | SR_CONF_SET,
 };
 
-static const char *hmo_coupling_options[] = {
-       "AC",
-       "ACL",
-       "DC",
-       "DCL",
+static const char *coupling_options[] = {
+       "AC",  // AC with 50 Ohm termination (152x, 202x, 30xx, 1202)
+       "ACL", // AC with 1 MOhm termination
+       "DC",  // DC with 50 Ohm termination
+       "DCL", // DC with 1 MOhm termination
+       "GND",
+};
+
+static const char *coupling_options_rtb200x[] = {
+       "ACL", // AC with 1 MOhm termination
+       "DCL", // DC with 1 MOhm termination
+       "GND",
+};
+
+static const char *coupling_options_rtm300x[] = {
+       "ACL", // AC with 1 MOhm termination
+       "DC",  // DC with 50 Ohm termination
+       "DCL", // DC with 1 MOhm termination
        "GND",
-       NULL,
 };
 
 static const char *scope_trigger_slopes[] = {
        "POS",
        "NEG",
-       NULL,
+       "EITH",
+};
+
+/* Predefined logic thresholds. */
+static const char *logic_threshold[] = {
+       "TTL",
+       "ECL",
+       "CMOS",
+       "USER1",
+       "USER2", // overwritten by logic_threshold_custom, use USER1 for permanent setting
+};
+
+static const char *logic_threshold_rtb200x_rtm300x[] = {
+       "TTL",
+       "ECL",
+       "CMOS",
+       "MAN", // overwritten by logic_threshold_custom
+};
+
+/* This might need updates whenever logic_threshold* above change. */
+#define MAX_NUM_LOGIC_THRESHOLD_ENTRIES ARRAY_SIZE(logic_threshold)
+
+/* RTC1002, HMO Compact2 and HMO1002/HMO1202 */
+static const char *an2_dig8_trigger_sources[] = {
+       "CH1", "CH2",
+       "LINE", "EXT", "PATT", "BUS1", "BUS2",
+       "D0", "D1", "D2", "D3", "D4", "D5", "D6", "D7",
+};
+
+/* HMO3xx2 */
+static const char *an2_dig16_trigger_sources[] = {
+       "CH1", "CH2",
+       "LINE", "EXT", "PATT", "BUS1", "BUS2",
+       "D0", "D1", "D2", "D3", "D4", "D5", "D6", "D7",
+       "D8", "D9", "D10", "D11", "D12", "D13", "D14", "D15",
+};
+
+/* RTB2002 and RTM3002 */
+static const char *an2_dig16_sbus_trigger_sources[] = {
+       "CH1", "CH2",
+       "LINE", "EXT", "PATT", "SBUS1", "SBUS2",
+       "D0", "D1", "D2", "D3", "D4", "D5", "D6", "D7",
+       "D8", "D9", "D10", "D11", "D12", "D13", "D14", "D15",
+};
+
+/* HMO Compact4 */
+static const char *an4_dig8_trigger_sources[] = {
+       "CH1", "CH2", "CH3", "CH4",
+       "LINE", "EXT", "PATT", "BUS1", "BUS2",
+       "D0", "D1", "D2", "D3", "D4", "D5", "D6", "D7",
 };
 
-static const char *hmo_compact2_trigger_sources[] = {
-       "CH1",
-       "CH2",
-       "LINE",
-       "EXT",
-       "D0",
-       "D1",
-       "D2",
-       "D3",
-       "D4",
-       "D5",
-       "D6",
-       "D7",
-       NULL,
+/* HMO3xx4 and HMO2524 */
+static const char *an4_dig16_trigger_sources[] = {
+       "CH1", "CH2", "CH3", "CH4",
+       "LINE", "EXT", "PATT", "BUS1", "BUS2",
+       "D0", "D1", "D2", "D3", "D4", "D5", "D6", "D7",
+       "D8", "D9", "D10", "D11", "D12", "D13", "D14", "D15",
 };
 
-static const char *hmo_compact4_trigger_sources[] = {
-       "CH1",
-       "CH2",
-       "CH3",
-       "CH4",
-       "LINE",
-       "EXT",
-       "D0",
-       "D1",
-       "D2",
-       "D3",
-       "D4",
-       "D5",
-       "D6",
-       "D7",
-       NULL,
+/* RTB2004, RTM3004 and RTA4004 */
+static const char *an4_dig16_sbus_trigger_sources[] = {
+       "CH1", "CH2", "CH3", "CH4",
+       "LINE", "EXT", "PATT", "SBUS1", "SBUS2",
+       "D0", "D1", "D2", "D3", "D4", "D5", "D6", "D7",
+       "D8", "D9", "D10", "D11", "D12", "D13", "D14", "D15",
 };
 
-static const uint64_t hmo_timebases[][2] = {
+static const uint64_t timebases[][2] = {
        /* nanoseconds */
+       { 1, 1000000000 },
        { 2, 1000000000 },
        { 5, 1000000000 },
        { 10, 1000000000 },
@@ -154,8 +272,30 @@ static const uint64_t hmo_timebases[][2] = {
        { 50, 1 },
 };
 
-static const uint64_t hmo_vdivs[][2] = {
-       /* millivolts */
+/* HMO Compact series (HMO722/724/1022/1024/1522/1524/2022/2024) do
+ * not support 1 ns timebase setting.
+ */
+static const uint64_t timebases_hmo_compact[][2] = {
+       /* nanoseconds */
+       { 2, 1000000000 },
+       { 5, 1000000000 },
+       { 10, 1000000000 },
+       { 20, 1000000000 },
+       { 50, 1000000000 },
+       { 100, 1000000000 },
+       { 200, 1000000000 },
+       { 500, 1000000000 },
+       /* microseconds */
+       { 1, 1000000 },
+       { 2, 1000000 },
+       { 5, 1000000 },
+       { 10, 1000000 },
+       { 20, 1000000 },
+       { 50, 1000000 },
+       { 100, 1000000 },
+       { 200, 1000000 },
+       { 500, 1000000 },
+       /* milliseconds */
        { 1, 1000 },
        { 2, 1000 },
        { 5, 1000 },
@@ -165,7 +305,7 @@ static const uint64_t hmo_vdivs[][2] = {
        { 100, 1000 },
        { 200, 1000 },
        { 500, 1000 },
-       /* volts */
+       /* seconds */
        { 1, 1 },
        { 2, 1 },
        { 5, 1 },
@@ -174,97 +314,438 @@ static const uint64_t hmo_vdivs[][2] = {
        { 50, 1 },
 };
 
+static const uint64_t vdivs[][2] = {
+       /* millivolts */
+       { 1, 1000 },
+       { 2, 1000 },
+       { 5, 1000 },
+       { 10, 1000 },
+       { 20, 1000 },
+       { 50, 1000 },
+       { 100, 1000 },
+       { 200, 1000 },
+       { 500, 1000 },
+       /* volts */
+       { 1, 1 },
+       { 2, 1 },
+       { 5, 1 },
+       { 10, 1 },
+};
+
 static const char *scope_analog_channel_names[] = {
-       "CH1",
-       "CH2",
-       "CH3",
-       "CH4",
+       "CH1", "CH2", "CH3", "CH4",
 };
 
 static const char *scope_digital_channel_names[] = {
-       "D0",
-       "D1",
-       "D2",
-       "D3",
-       "D4",
-       "D5",
-       "D6",
-       "D7",
-       "D8",
-       "D9",
-       "D10",
-       "D11",
-       "D12",
-       "D13",
-       "D14",
-       "D15",
+       "D0", "D1", "D2", "D3", "D4", "D5", "D6", "D7",
+       "D8", "D9", "D10", "D11", "D12", "D13", "D14", "D15",
 };
 
-static const struct scope_config scope_models[] = {
+static struct scope_config scope_models[] = {
+       {
+               /* HMO Compact2: HMO722/1022/1522/2022 support only 8 digital channels. */
+               .name = {"HMO722", "HMO1022", "HMO1522", "HMO2022", NULL},
+               .analog_channels = 2,
+               .digital_channels = 8,
+
+               .analog_names = &scope_analog_channel_names,
+               .digital_names = &scope_digital_channel_names,
+
+               .devopts = &devopts,
+               .num_devopts = ARRAY_SIZE(devopts),
+
+               .devopts_cg_analog = &devopts_cg_analog,
+               .num_devopts_cg_analog = ARRAY_SIZE(devopts_cg_analog),
+
+               .devopts_cg_digital = &devopts_cg_digital,
+               .num_devopts_cg_digital = ARRAY_SIZE(devopts_cg_digital),
+
+               .coupling_options = &coupling_options,
+               .num_coupling_options = ARRAY_SIZE(coupling_options),
+
+               .logic_threshold = &logic_threshold,
+               .num_logic_threshold = ARRAY_SIZE(logic_threshold),
+               .logic_threshold_for_pod = TRUE,
+
+               .trigger_sources = &an2_dig8_trigger_sources,
+               .num_trigger_sources = ARRAY_SIZE(an2_dig8_trigger_sources),
+
+               .trigger_slopes = &scope_trigger_slopes,
+               .num_trigger_slopes = ARRAY_SIZE(scope_trigger_slopes),
+
+               .timebases = &timebases_hmo_compact,
+               .num_timebases = ARRAY_SIZE(timebases_hmo_compact),
+
+               .vdivs = &vdivs,
+               .num_vdivs = ARRAY_SIZE(vdivs),
+
+               .num_ydivs = 8,
+
+               .scpi_dialect = &hameg_scpi_dialect,
+       },
        {
-               /* HMO2522/3032/3042/3052 support 16 digital channels but they're not supported yet. */
-               .name = {"HMO722", "HMO1022", "HMO1522", "HMO2022", "HMO2522",
-                               "HMO3032", "HMO3042", "HMO3052", NULL},
+               /* RTC1002 and HMO1002/HMO1202 support only 8 digital channels. */
+               .name = {"RTC1002", "HMO1002", "HMO1202", NULL},
                .analog_channels = 2,
                .digital_channels = 8,
-               .digital_pods = 1,
 
                .analog_names = &scope_analog_channel_names,
                .digital_names = &scope_digital_channel_names,
 
-               .devopts = &hmo_devopts,
-               .num_devopts = ARRAY_SIZE(hmo_devopts),
+               .devopts = &devopts,
+               .num_devopts = ARRAY_SIZE(devopts),
 
-               .analog_devopts = &hmo_analog_devopts,
-               .num_analog_devopts = ARRAY_SIZE(hmo_analog_devopts),
+               .devopts_cg_analog = &devopts_cg_analog,
+               .num_devopts_cg_analog = ARRAY_SIZE(devopts_cg_analog),
+
+               .devopts_cg_digital = &devopts_cg_digital,
+               .num_devopts_cg_digital = ARRAY_SIZE(devopts_cg_digital),
+
+               .coupling_options = &coupling_options,
+               .num_coupling_options = ARRAY_SIZE(coupling_options),
+
+               .logic_threshold = &logic_threshold,
+               .num_logic_threshold = ARRAY_SIZE(logic_threshold),
+               .logic_threshold_for_pod = TRUE,
+
+               .trigger_sources = &an2_dig8_trigger_sources,
+               .num_trigger_sources = ARRAY_SIZE(an2_dig8_trigger_sources),
 
-               .coupling_options = &hmo_coupling_options,
-               .trigger_sources = &hmo_compact2_trigger_sources,
                .trigger_slopes = &scope_trigger_slopes,
+               .num_trigger_slopes = ARRAY_SIZE(scope_trigger_slopes),
 
-               .timebases = &hmo_timebases,
-               .num_timebases = ARRAY_SIZE(hmo_timebases),
+               .timebases = &timebases,
+               .num_timebases = ARRAY_SIZE(timebases),
 
-               .vdivs = &hmo_vdivs,
-               .num_vdivs = ARRAY_SIZE(hmo_vdivs),
+               .vdivs = &vdivs,
+               .num_vdivs = ARRAY_SIZE(vdivs),
 
-               .num_xdivs = 12,
                .num_ydivs = 8,
 
                .scpi_dialect = &hameg_scpi_dialect,
        },
        {
-               /* HMO2524/3034/3044/3054 support 16 digital channels but they're not supported yet. */
-               .name = {"HMO724", "HMO1024", "HMO1524", "HMO2024", "HMO2524",
-                               "HMO3034", "HMO3044", "HMO3054", NULL},
+               /* HMO3032/3042/3052/3522 support 16 digital channels. */
+               .name = {"HMO3032", "HMO3042", "HMO3052", "HMO3522", NULL},
+               .analog_channels = 2,
+               .digital_channels = 16,
+
+               .analog_names = &scope_analog_channel_names,
+               .digital_names = &scope_digital_channel_names,
+
+               .devopts = &devopts,
+               .num_devopts = ARRAY_SIZE(devopts),
+
+               .devopts_cg_analog = &devopts_cg_analog,
+               .num_devopts_cg_analog = ARRAY_SIZE(devopts_cg_analog),
+
+               .devopts_cg_digital = &devopts_cg_digital,
+               .num_devopts_cg_digital = ARRAY_SIZE(devopts_cg_digital),
+
+               .coupling_options = &coupling_options,
+               .num_coupling_options = ARRAY_SIZE(coupling_options),
+
+               .logic_threshold = &logic_threshold,
+               .num_logic_threshold = ARRAY_SIZE(logic_threshold),
+               .logic_threshold_for_pod = TRUE,
+
+               .trigger_sources = &an2_dig16_trigger_sources,
+               .num_trigger_sources = ARRAY_SIZE(an2_dig16_trigger_sources),
+
+               .trigger_slopes = &scope_trigger_slopes,
+               .num_trigger_slopes = ARRAY_SIZE(scope_trigger_slopes),
+
+               .timebases = &timebases,
+               .num_timebases = ARRAY_SIZE(timebases),
+
+               .vdivs = &vdivs,
+               .num_vdivs = ARRAY_SIZE(vdivs),
+
+               .num_ydivs = 8,
+
+               .scpi_dialect = &hameg_scpi_dialect,
+       },
+       {
+               /* HMO Compact4: HMO724/1024/1524/2024 support only 8 digital channels. */
+               .name = {"HMO724", "HMO1024", "HMO1524", "HMO2024", NULL},
                .analog_channels = 4,
                .digital_channels = 8,
-               .digital_pods = 1,
 
                .analog_names = &scope_analog_channel_names,
                .digital_names = &scope_digital_channel_names,
 
-               .devopts = &hmo_devopts,
-               .num_devopts = ARRAY_SIZE(hmo_devopts),
+               .devopts = &devopts,
+               .num_devopts = ARRAY_SIZE(devopts),
+
+               .devopts_cg_analog = &devopts_cg_analog,
+               .num_devopts_cg_analog = ARRAY_SIZE(devopts_cg_analog),
+
+               .devopts_cg_digital = &devopts_cg_digital,
+               .num_devopts_cg_digital = ARRAY_SIZE(devopts_cg_digital),
+
+               .coupling_options = &coupling_options,
+               .num_coupling_options = ARRAY_SIZE(coupling_options),
+
+               .logic_threshold = &logic_threshold,
+               .num_logic_threshold = ARRAY_SIZE(logic_threshold),
+               .logic_threshold_for_pod = TRUE,
+
+               .trigger_sources = &an4_dig8_trigger_sources,
+               .num_trigger_sources = ARRAY_SIZE(an4_dig8_trigger_sources),
+
+               .trigger_slopes = &scope_trigger_slopes,
+               .num_trigger_slopes = ARRAY_SIZE(scope_trigger_slopes),
+
+               .timebases = &timebases_hmo_compact,
+               .num_timebases = ARRAY_SIZE(timebases_hmo_compact),
+
+               .vdivs = &vdivs,
+               .num_vdivs = ARRAY_SIZE(vdivs),
+
+               .num_ydivs = 8,
+
+               .scpi_dialect = &hameg_scpi_dialect,
+       },
+       {
+               .name = {"HMO2524", "HMO3034", "HMO3044", "HMO3054", "HMO3524", NULL},
+               .analog_channels = 4,
+               .digital_channels = 16,
+
+               .analog_names = &scope_analog_channel_names,
+               .digital_names = &scope_digital_channel_names,
+
+               .devopts = &devopts,
+               .num_devopts = ARRAY_SIZE(devopts),
 
-               .analog_devopts = &hmo_analog_devopts,
-               .num_analog_devopts = ARRAY_SIZE(hmo_analog_devopts),
+               .devopts_cg_analog = &devopts_cg_analog,
+               .num_devopts_cg_analog = ARRAY_SIZE(devopts_cg_analog),
+
+               .devopts_cg_digital = &devopts_cg_digital,
+               .num_devopts_cg_digital = ARRAY_SIZE(devopts_cg_digital),
+
+               .coupling_options = &coupling_options,
+               .num_coupling_options = ARRAY_SIZE(coupling_options),
+
+               .logic_threshold = &logic_threshold,
+               .num_logic_threshold = ARRAY_SIZE(logic_threshold),
+               .logic_threshold_for_pod = TRUE,
+
+               .trigger_sources = &an4_dig16_trigger_sources,
+               .num_trigger_sources = ARRAY_SIZE(an4_dig16_trigger_sources),
 
-               .coupling_options = &hmo_coupling_options,
-               .trigger_sources = &hmo_compact4_trigger_sources,
                .trigger_slopes = &scope_trigger_slopes,
+               .num_trigger_slopes = ARRAY_SIZE(scope_trigger_slopes),
 
-               .timebases = &hmo_timebases,
-               .num_timebases = ARRAY_SIZE(hmo_timebases),
+               .timebases = &timebases,
+               .num_timebases = ARRAY_SIZE(timebases),
 
-               .vdivs = &hmo_vdivs,
-               .num_vdivs = ARRAY_SIZE(hmo_vdivs),
+               .vdivs = &vdivs,
+               .num_vdivs = ARRAY_SIZE(vdivs),
 
-               .num_xdivs = 12,
                .num_ydivs = 8,
 
                .scpi_dialect = &hameg_scpi_dialect,
        },
+       {
+               .name = {"RTB2002", NULL},
+               .analog_channels = 2,
+               .digital_channels = 16,
+
+               .analog_names = &scope_analog_channel_names,
+               .digital_names = &scope_digital_channel_names,
+
+               .devopts = &devopts,
+               .num_devopts = ARRAY_SIZE(devopts),
+
+               .devopts_cg_analog = &devopts_cg_analog,
+               .num_devopts_cg_analog = ARRAY_SIZE(devopts_cg_analog),
+
+               .devopts_cg_digital = &devopts_cg_digital,
+               .num_devopts_cg_digital = ARRAY_SIZE(devopts_cg_digital),
+
+               .coupling_options = &coupling_options_rtb200x,
+               .num_coupling_options = ARRAY_SIZE(coupling_options_rtb200x),
+
+               .logic_threshold = &logic_threshold_rtb200x_rtm300x,
+               .num_logic_threshold = ARRAY_SIZE(logic_threshold_rtb200x_rtm300x),
+               .logic_threshold_for_pod = FALSE,
+
+               .trigger_sources = &an2_dig16_sbus_trigger_sources,
+               .num_trigger_sources = ARRAY_SIZE(an2_dig16_sbus_trigger_sources),
+
+               .trigger_slopes = &scope_trigger_slopes,
+               .num_trigger_slopes = ARRAY_SIZE(scope_trigger_slopes),
+
+               .timebases = &timebases,
+               .num_timebases = ARRAY_SIZE(timebases),
+
+               .vdivs = &vdivs,
+               .num_vdivs = ARRAY_SIZE(vdivs),
+
+               .num_ydivs = 8,
+
+               .scpi_dialect = &rohde_schwarz_log_not_pod_scpi_dialect,
+       },
+       {
+               .name = {"RTB2004", NULL},
+               .analog_channels = 4,
+               .digital_channels = 16,
+
+               .analog_names = &scope_analog_channel_names,
+               .digital_names = &scope_digital_channel_names,
+
+               .devopts = &devopts,
+               .num_devopts = ARRAY_SIZE(devopts),
+
+               .devopts_cg_analog = &devopts_cg_analog,
+               .num_devopts_cg_analog = ARRAY_SIZE(devopts_cg_analog),
+
+               .devopts_cg_digital = &devopts_cg_digital,
+               .num_devopts_cg_digital = ARRAY_SIZE(devopts_cg_digital),
+
+               .coupling_options = &coupling_options_rtb200x,
+               .num_coupling_options = ARRAY_SIZE(coupling_options_rtb200x),
+
+               .logic_threshold = &logic_threshold_rtb200x_rtm300x,
+               .num_logic_threshold = ARRAY_SIZE(logic_threshold_rtb200x_rtm300x),
+               .logic_threshold_for_pod = FALSE,
+
+               .trigger_sources = &an4_dig16_sbus_trigger_sources,
+               .num_trigger_sources = ARRAY_SIZE(an4_dig16_sbus_trigger_sources),
+
+               .trigger_slopes = &scope_trigger_slopes,
+               .num_trigger_slopes = ARRAY_SIZE(scope_trigger_slopes),
+
+               .timebases = &timebases,
+               .num_timebases = ARRAY_SIZE(timebases),
+
+               .vdivs = &vdivs,
+               .num_vdivs = ARRAY_SIZE(vdivs),
+
+               .num_ydivs = 8,
+
+               .scpi_dialect = &rohde_schwarz_log_not_pod_scpi_dialect,
+       },
+       {
+               .name = {"RTM3002", NULL},
+               .analog_channels = 2,
+               .digital_channels = 16,
+
+               .analog_names = &scope_analog_channel_names,
+               .digital_names = &scope_digital_channel_names,
+
+               .devopts = &devopts,
+               .num_devopts = ARRAY_SIZE(devopts),
+
+               .devopts_cg_analog = &devopts_cg_analog,
+               .num_devopts_cg_analog = ARRAY_SIZE(devopts_cg_analog),
+
+               .devopts_cg_digital = &devopts_cg_digital,
+               .num_devopts_cg_digital = ARRAY_SIZE(devopts_cg_digital),
+
+               .coupling_options = &coupling_options_rtm300x,
+               .num_coupling_options = ARRAY_SIZE(coupling_options_rtm300x),
+
+               .logic_threshold = &logic_threshold_rtb200x_rtm300x,
+               .num_logic_threshold = ARRAY_SIZE(logic_threshold_rtb200x_rtm300x),
+               .logic_threshold_for_pod = FALSE,
+
+               .trigger_sources = &an2_dig16_sbus_trigger_sources,
+               .num_trigger_sources = ARRAY_SIZE(an2_dig16_sbus_trigger_sources),
+
+               .trigger_slopes = &scope_trigger_slopes,
+               .num_trigger_slopes = ARRAY_SIZE(scope_trigger_slopes),
+
+               .timebases = &timebases,
+               .num_timebases = ARRAY_SIZE(timebases),
+
+               .vdivs = &vdivs,
+               .num_vdivs = ARRAY_SIZE(vdivs),
+
+               .num_ydivs = 8,
+
+               .scpi_dialect = &rohde_schwarz_log_not_pod_scpi_dialect,
+       },
+       {
+               .name = {"RTM3004", NULL},
+               .analog_channels = 4,
+               .digital_channels = 16,
+
+               .analog_names = &scope_analog_channel_names,
+               .digital_names = &scope_digital_channel_names,
+
+               .devopts = &devopts,
+               .num_devopts = ARRAY_SIZE(devopts),
+
+               .devopts_cg_analog = &devopts_cg_analog,
+               .num_devopts_cg_analog = ARRAY_SIZE(devopts_cg_analog),
+
+               .devopts_cg_digital = &devopts_cg_digital,
+               .num_devopts_cg_digital = ARRAY_SIZE(devopts_cg_digital),
+
+               .coupling_options = &coupling_options_rtm300x,
+               .num_coupling_options = ARRAY_SIZE(coupling_options_rtm300x),
+
+               .logic_threshold = &logic_threshold_rtb200x_rtm300x,
+               .num_logic_threshold = ARRAY_SIZE(logic_threshold_rtb200x_rtm300x),
+               .logic_threshold_for_pod = FALSE,
+
+               .trigger_sources = &an4_dig16_sbus_trigger_sources,
+               .num_trigger_sources = ARRAY_SIZE(an4_dig16_sbus_trigger_sources),
+
+               .trigger_slopes = &scope_trigger_slopes,
+               .num_trigger_slopes = ARRAY_SIZE(scope_trigger_slopes),
+
+               .timebases = &timebases,
+               .num_timebases = ARRAY_SIZE(timebases),
+
+               .vdivs = &vdivs,
+               .num_vdivs = ARRAY_SIZE(vdivs),
+
+               .num_ydivs = 8,
+
+               .scpi_dialect = &rohde_schwarz_log_not_pod_scpi_dialect,
+       },
+       {
+               .name = {"RTA4004", NULL},
+               .analog_channels = 4,
+               .digital_channels = 16,
+
+               .analog_names = &scope_analog_channel_names,
+               .digital_names = &scope_digital_channel_names,
+
+               .devopts = &devopts,
+               .num_devopts = ARRAY_SIZE(devopts),
+
+               .devopts_cg_analog = &devopts_cg_analog,
+               .num_devopts_cg_analog = ARRAY_SIZE(devopts_cg_analog),
+
+               .devopts_cg_digital = &devopts_cg_digital,
+               .num_devopts_cg_digital = ARRAY_SIZE(devopts_cg_digital),
+
+               .coupling_options = &coupling_options_rtm300x,
+               .num_coupling_options = ARRAY_SIZE(coupling_options_rtm300x),
+
+               .logic_threshold = &logic_threshold_rtb200x_rtm300x,
+               .num_logic_threshold = ARRAY_SIZE(logic_threshold_rtb200x_rtm300x),
+               .logic_threshold_for_pod = FALSE,
+
+               .trigger_sources = &an4_dig16_sbus_trigger_sources,
+               .num_trigger_sources = ARRAY_SIZE(an4_dig16_sbus_trigger_sources),
+
+               .trigger_slopes = &scope_trigger_slopes,
+               .num_trigger_slopes = ARRAY_SIZE(scope_trigger_slopes),
+
+               .timebases = &timebases,
+               .num_timebases = ARRAY_SIZE(timebases),
+
+               .vdivs = &vdivs,
+               .num_vdivs = ARRAY_SIZE(vdivs),
+
+               .num_ydivs = 8,
+
+               .scpi_dialect = &rohde_schwarz_log_not_pod_scpi_dialect,
+       },
 };
 
 static void scope_state_dump(const struct scope_config *config,
@@ -276,7 +757,7 @@ static void scope_state_dump(const struct scope_config *config,
        for (i = 0; i < config->analog_channels; i++) {
                tmp = sr_voltage_string((*config->vdivs)[state->analog_channels[i].vdiv][0],
                                             (*config->vdivs)[state->analog_channels[i].vdiv][1]);
-               sr_info("State of analog channel  %d -> %s : %s (coupling) %s (vdiv) %2.2e (offset)",
+               sr_info("State of analog channel %d -> %s : %s (coupling) %s (vdiv) %2.2e (offset)",
                        i + 1, state->analog_channels[i].state ? "On" : "Off",
                        (*config->coupling_options)[state->analog_channels[i].coupling],
                        tmp, state->analog_channels[i].vertical_offset);
@@ -288,11 +769,18 @@ static void scope_state_dump(const struct scope_config *config,
        }
 
        for (i = 0; i < config->digital_pods; i++) {
-               sr_info("State of digital POD %d -> %s", i,
-                       state->digital_pods[i] ? "On" : "Off");
+               if (!strncmp("USER", (*config->logic_threshold)[state->digital_pods[i].threshold], 4) ||
+                   !strcmp("MAN", (*config->logic_threshold)[state->digital_pods[i].threshold]))
+                       sr_info("State of digital POD %d -> %s : %E (threshold)", i + 1,
+                               state->digital_pods[i].state ? "On" : "Off",
+                               state->digital_pods[i].user_threshold);
+               else
+                       sr_info("State of digital POD %d -> %s : %s (threshold)", i + 1,
+                               state->digital_pods[i].state ? "On" : "Off",
+                               (*config->logic_threshold)[state->digital_pods[i].threshold]);
        }
 
-       tmp = sr_period_string((*config->timebases)[state->timebase][0] *
+       tmp = sr_period_string((*config->timebases)[state->timebase][0],
                               (*config->timebases)[state->timebase][1]);
        sr_info("Current timebase: %s", tmp);
        g_free(tmp);
@@ -301,49 +789,41 @@ static void scope_state_dump(const struct scope_config *config,
        sr_info("Current samplerate: %s", tmp);
        g_free(tmp);
 
-       sr_info("Current trigger: %s (source), %s (slope) %.2f (offset)",
-               (*config->trigger_sources)[state->trigger_source],
-               (*config->trigger_slopes)[state->trigger_slope],
-               state->horiz_triggerpos);
+       if (!strcmp("PATT", (*config->trigger_sources)[state->trigger_source]))
+               sr_info("Current trigger: %s (pattern), %.2f (offset)",
+                       state->trigger_pattern,
+                       state->horiz_triggerpos);
+       else // Edge (slope) trigger
+               sr_info("Current trigger: %s (source), %s (slope) %.2f (offset)",
+                       (*config->trigger_sources)[state->trigger_source],
+                       (*config->trigger_slopes)[state->trigger_slope],
+                       state->horiz_triggerpos);
 }
 
 static int scope_state_get_array_option(struct sr_scpi_dev_inst *scpi,
-               const char *command, const char *(*array)[], int *result)
+               const char *command, const char *(*array)[], unsigned int n, int *result)
 {
        char *tmp;
-       unsigned int i;
+       int idx;
 
-       if (sr_scpi_get_string(scpi, command, &tmp) != SR_OK) {
-               g_free(tmp);
+       if (sr_scpi_get_string(scpi, command, &tmp) != SR_OK)
                return SR_ERR;
-       }
-
-       for (i = 0; (*array)[i]; i++) {
-               if (!g_strcmp0(tmp, (*array)[i])) {
-                       *result = i;
-                       g_free(tmp);
-                       tmp = NULL;
-                       break;
-               }
-       }
 
-       if (tmp) {
+       if ((idx = std_str_idx_s(tmp, *array, n)) < 0) {
                g_free(tmp);
-               return SR_ERR;
+               return SR_ERR_ARG;
        }
 
+       *result = idx;
+
+       g_free(tmp);
+
        return SR_OK;
 }
 
 /**
- * This function takes a value of the form "2.000E-03", converts it to a
- * significand / factor pair and returns the index of an array where
- * a matching pair was found.
- *
- * It's a bit convoluted because of floating-point issues. The value "10.00E-09"
- * is parsed by g_ascii_strtod() as 0.000000009999999939, for example.
- * Therefore it's easier to break the number up into two strings and handle
- * them separately.
+ * This function takes a value of the form "2.000E-03" and returns the index
+ * of an array where a matching pair was found.
  *
  * @param value The string to be parsed.
  * @param array The array of s/f pairs.
@@ -355,48 +835,15 @@ static int scope_state_get_array_option(struct sr_scpi_dev_inst *scpi,
 static int array_float_get(gchar *value, const uint64_t array[][2],
                int array_len, unsigned int *result)
 {
-       int i, pos, e;
-       uint64_t f;
-       float s;
-       unsigned int s_int;
-       gchar ss[10], es[10];
-
-       memset(ss, 0, sizeof(ss));
-       memset(es, 0, sizeof(es));
-
-       /* Get index of the separating 'E' character and break up the string. */
-       pos = (int)g_strstr_len(value, strlen(value), "E");
-       pos -= (int)value;
+       struct sr_rational rval;
+       struct sr_rational aval;
 
-       strncpy(ss, value, pos);
-       strncpy(es, &(value[pos+1]), 3);
-
-       if (sr_atof_ascii(ss, &s) != SR_OK)
-               return SR_ERR;
-       if (sr_atoi(es, &e) != SR_OK)
+       if (sr_parse_rational(value, &rval) != SR_OK)
                return SR_ERR;
 
-       /* Transform e.g. 10^-03 to 1000 as the array stores the inverse. */
-       f = pow(10, abs(e));
-
-       /*
-        * Adjust the significand/factor pair to make sure
-        * that f is a multiple of 1000.
-        */
-       while ((int)fmod(log10(f), 3) > 0) {
-               s *= 10;
-
-               if (e < 0)
-                       f *= 10;
-               else
-                       f /= 10;
-       }
-
-       /* Truncate s to circumvent rounding errors. */
-       s_int = (unsigned int)s;
-
-       for (i = 0; i < array_len; i++) {
-               if ((s_int == array[i][0]) && (f == array[i][1])) {
+       for (int i = 0; i < array_len; i++) {
+               sr_rational_set(&aval, array[i][0], array[i][1]);
+               if (sr_rational_eq(&rval, &aval)) {
                        *result = i;
                        return SR_OK;
                }
@@ -405,13 +852,29 @@ static int array_float_get(gchar *value, const uint64_t array[][2],
        return SR_ERR;
 }
 
-static int analog_channel_state_get(struct sr_scpi_dev_inst *scpi,
+static struct sr_channel *get_channel_by_index_and_type(GSList *channel_lhead,
+                                                       int index, int type)
+{
+       while (channel_lhead) {
+               struct sr_channel *ch = channel_lhead->data;
+               if (ch->index == index && ch->type == type)
+                       return ch;
+
+               channel_lhead = channel_lhead->next;
+       }
+
+       return 0;
+}
+
+static int analog_channel_state_get(struct sr_dev_inst *sdi,
                                    const struct scope_config *config,
                                    struct scope_state *state)
 {
        unsigned int i, j;
        char command[MAX_COMMAND_SIZE];
        char *tmp_str;
+       struct sr_channel *ch;
+       struct sr_scpi_dev_inst *scpi = sdi->conn;
 
        for (i = 0; i < config->analog_channels; i++) {
                g_snprintf(command, sizeof(command),
@@ -422,15 +885,18 @@ static int analog_channel_state_get(struct sr_scpi_dev_inst *scpi,
                                     &state->analog_channels[i].state) != SR_OK)
                        return SR_ERR;
 
+               ch = get_channel_by_index_and_type(sdi->channels, i, SR_CHANNEL_ANALOG);
+               if (ch)
+                       ch->enabled = state->analog_channels[i].state;
+
                g_snprintf(command, sizeof(command),
-                          (*config->scpi_dialect)[SCPI_CMD_GET_VERTICAL_DIV],
+                          (*config->scpi_dialect)[SCPI_CMD_GET_VERTICAL_SCALE],
                           i + 1);
 
                if (sr_scpi_get_string(scpi, command, &tmp_str) != SR_OK)
                        return SR_ERR;
 
-               if (array_float_get(tmp_str, hmo_vdivs, ARRAY_SIZE(hmo_vdivs),
-                               &j) != SR_OK) {
+               if (array_float_get(tmp_str, ARRAY_AND_SIZE(vdivs), &j) != SR_OK) {
                        g_free(tmp_str);
                        sr_err("Could not determine array index for vertical div scale.");
                        return SR_ERR;
@@ -452,19 +918,37 @@ static int analog_channel_state_get(struct sr_scpi_dev_inst *scpi,
                           i + 1);
 
                if (scope_state_get_array_option(scpi, command, config->coupling_options,
+                                        config->num_coupling_options,
                                         &state->analog_channels[i].coupling) != SR_OK)
                        return SR_ERR;
+
+               g_snprintf(command, sizeof(command),
+                          (*config->scpi_dialect)[SCPI_CMD_GET_PROBE_UNIT],
+                          i + 1);
+
+               if (sr_scpi_get_string(scpi, command, &tmp_str) != SR_OK)
+                       return SR_ERR;
+
+               if (tmp_str[0] == 'A')
+                       state->analog_channels[i].probe_unit = 'A';
+               else
+                       state->analog_channels[i].probe_unit = 'V';
+               g_free(tmp_str);
        }
 
        return SR_OK;
 }
 
-static int digital_channel_state_get(struct sr_scpi_dev_inst *scpi,
+static int digital_channel_state_get(struct sr_dev_inst *sdi,
                                     const struct scope_config *config,
                                     struct scope_state *state)
 {
-       unsigned int i;
+       unsigned int i, idx;
+       int result = SR_ERR;
+       char *logic_threshold_short[MAX_NUM_LOGIC_THRESHOLD_ENTRIES];
        char command[MAX_COMMAND_SIZE];
+       struct sr_channel *ch;
+       struct sr_scpi_dev_inst *scpi = sdi->conn;
 
        for (i = 0; i < config->digital_channels; i++) {
                g_snprintf(command, sizeof(command),
@@ -474,6 +958,26 @@ static int digital_channel_state_get(struct sr_scpi_dev_inst *scpi,
                if (sr_scpi_get_bool(scpi, command,
                                     &state->digital_channels[i]) != SR_OK)
                        return SR_ERR;
+
+               ch = get_channel_by_index_and_type(sdi->channels, i, SR_CHANNEL_LOGIC);
+               if (ch)
+                       ch->enabled = state->digital_channels[i];
+       }
+
+       /* According to the SCPI standard, on models that support multiple
+        * user-defined logic threshold settings the response to the command
+        * SCPI_CMD_GET_DIG_POD_THRESHOLD might return "USER" instead of
+        * "USER1".
+        *
+        * This makes more difficult to validate the response when the logic
+        * threshold is set to "USER1" and therefore we need to prevent device
+        * opening failures in such configuration case...
+        */
+       for (i = 0; i < config->num_logic_threshold; i++) {
+               logic_threshold_short[i] = g_strdup((*config->logic_threshold)[i]);
+               if (!strcmp("USER1", (*config->logic_threshold)[i]))
+                       g_strlcpy(logic_threshold_short[i],
+                                 (*config->logic_threshold)[i], strlen((*config->logic_threshold)[i]));
        }
 
        for (i = 0; i < config->digital_pods; i++) {
@@ -482,11 +986,58 @@ static int digital_channel_state_get(struct sr_scpi_dev_inst *scpi,
                           i + 1);
 
                if (sr_scpi_get_bool(scpi, command,
-                                    &state->digital_pods[i]) != SR_OK)
-                       return SR_ERR;
+                                    &state->digital_pods[i].state) != SR_OK)
+                       goto exit;
+
+               /* Check if the threshold command is based on the POD or digital channel index. */
+               if (config->logic_threshold_for_pod)
+                       idx = i + 1;
+               else
+                       idx = i * DIGITAL_CHANNELS_PER_POD;
+
+               g_snprintf(command, sizeof(command),
+                          (*config->scpi_dialect)[SCPI_CMD_GET_DIG_POD_THRESHOLD],
+                          idx);
+
+               /* Check for both standard and shortened responses. */
+               if (scope_state_get_array_option(scpi, command, config->logic_threshold,
+                                                config->num_logic_threshold,
+                                                &state->digital_pods[i].threshold) != SR_OK)
+                       if (scope_state_get_array_option(scpi, command, (const char * (*)[]) &logic_threshold_short,
+                                                        config->num_logic_threshold,
+                                                        &state->digital_pods[i].threshold) != SR_OK)
+                               goto exit;
+
+               /* If used-defined or custom threshold is active, get the level. */
+               if (!strcmp("USER1", (*config->logic_threshold)[state->digital_pods[i].threshold]))
+                       g_snprintf(command, sizeof(command),
+                                  (*config->scpi_dialect)[SCPI_CMD_GET_DIG_POD_USER_THRESHOLD],
+                                  idx, 1); /* USER1 logic threshold setting. */
+               else if (!strcmp("USER2", (*config->logic_threshold)[state->digital_pods[i].threshold]))
+                       g_snprintf(command, sizeof(command),
+                                  (*config->scpi_dialect)[SCPI_CMD_GET_DIG_POD_USER_THRESHOLD],
+                                  idx, 2); /* USER2 for custom logic_threshold setting. */
+               else if (!strcmp("USER", (*config->logic_threshold)[state->digital_pods[i].threshold]) ||
+                        !strcmp("MAN", (*config->logic_threshold)[state->digital_pods[i].threshold]))
+                       g_snprintf(command, sizeof(command),
+                                  (*config->scpi_dialect)[SCPI_CMD_GET_DIG_POD_USER_THRESHOLD],
+                                  idx); /* USER or MAN for custom logic_threshold setting. */
+               if (!strcmp("USER1", (*config->logic_threshold)[state->digital_pods[i].threshold]) ||
+                   !strcmp("USER2", (*config->logic_threshold)[state->digital_pods[i].threshold]) ||
+                   !strcmp("USER", (*config->logic_threshold)[state->digital_pods[i].threshold]) ||
+                   !strcmp("MAN", (*config->logic_threshold)[state->digital_pods[i].threshold]))
+                       if (sr_scpi_get_float(scpi, command,
+                           &state->digital_pods[i].user_threshold) != SR_OK)
+                               goto exit;
        }
 
-       return SR_OK;
+       result = SR_OK;
+
+exit:
+       for (i = 0; i < config->num_logic_threshold; i++)
+               g_free(logic_threshold_short[i]);
+
+       return result;
 }
 
 SR_PRIV int hmo_update_sample_rate(const struct sr_dev_inst *sdi)
@@ -494,59 +1045,18 @@ SR_PRIV int hmo_update_sample_rate(const struct sr_dev_inst *sdi)
        struct dev_context *devc;
        struct scope_state *state;
        const struct scope_config *config;
-
-       int tmp;
-       unsigned int i;
        float tmp_float;
-       gboolean channel_found;
-       char tmp_str[MAX_COMMAND_SIZE];
-       char chan_name[20];
 
        devc = sdi->priv;
        config = devc->model_config;
        state = devc->model_state;
-       channel_found = FALSE;
 
-       for (i = 0; i < config->analog_channels; i++) {
-               if (state->analog_channels[i].state) {
-                       g_snprintf(chan_name, sizeof(chan_name), "CHAN%d", i + 1);
-                       g_snprintf(tmp_str, sizeof(tmp_str),
-                                  (*config->scpi_dialect)[SCPI_CMD_GET_SAMPLE_RATE_LIVE],
-                                  chan_name);
-                       channel_found = TRUE;
-                       break;
-               }
-       }
-
-       if (!channel_found) {
-               for (i = 0; i < config->digital_pods; i++) {
-                       if (state->digital_pods[i]) {
-                               g_snprintf(chan_name, sizeof(chan_name), "POD%d", i);
-                               g_snprintf(tmp_str, sizeof(tmp_str),
-                                          (*config->scpi_dialect)[SCPI_CMD_GET_SAMPLE_RATE_LIVE],
-                                          chan_name);
-                               channel_found = TRUE;
-                               break;
-                       }
-               }
-       }
-
-       /* No channel is active, ask the instrument for the sample rate
-        * in single shot mode */
-       if (!channel_found) {
-               if (sr_scpi_get_float(sdi->conn,
-                                     (*config->scpi_dialect)[SCPI_CMD_GET_SAMPLE_RATE],
-                                     &tmp_float) != SR_OK)
-                       return SR_ERR;
+       if (sr_scpi_get_float(sdi->conn,
+                             (*config->scpi_dialect)[SCPI_CMD_GET_SAMPLE_RATE],
+                             &tmp_float) != SR_OK)
+               return SR_ERR;
 
-               state->sample_rate = tmp_float;
-       } else {
-               if (sr_scpi_get_int(sdi->conn, tmp_str, &tmp) != SR_OK)
-                       return SR_ERR;
-               state->sample_rate = tmp / (((float) (*config->timebases)[state->timebase][0] /
-                                            (*config->timebases)[state->timebase][1]) *
-                                           config->num_xdivs);
-       }
+       state->sample_rate = tmp_float;
 
        return SR_OK;
 }
@@ -566,15 +1076,10 @@ SR_PRIV int hmo_scope_state_get(struct sr_dev_inst *sdi)
 
        sr_info("Fetching scope state");
 
-       if (analog_channel_state_get(sdi->conn, config, state) != SR_OK)
+       if (analog_channel_state_get(sdi, config, state) != SR_OK)
                return SR_ERR;
 
-       if (digital_channel_state_get(sdi->conn, config, state) != SR_OK)
-               return SR_ERR;
-
-       if (sr_scpi_get_float(sdi->conn,
-                       (*config->scpi_dialect)[SCPI_CMD_GET_TIMEBASE],
-                       &tmp_float) != SR_OK)
+       if (digital_channel_state_get(sdi, config, state) != SR_OK)
                return SR_ERR;
 
        if (sr_scpi_get_string(sdi->conn,
@@ -582,15 +1087,21 @@ SR_PRIV int hmo_scope_state_get(struct sr_dev_inst *sdi)
                        &tmp_str) != SR_OK)
                return SR_ERR;
 
-       if (array_float_get(tmp_str, hmo_timebases, ARRAY_SIZE(hmo_timebases),
-                       &i) != SR_OK) {
+       if (array_float_get(tmp_str, ARRAY_AND_SIZE(timebases), &i) != SR_OK) {
                g_free(tmp_str);
                sr_err("Could not determine array index for time base.");
                return SR_ERR;
        }
+       g_free(tmp_str);
 
        state->timebase = i;
 
+       /* Determine the number of horizontal (x) divisions. */
+       if (sr_scpi_get_int(sdi->conn,
+           (*config->scpi_dialect)[SCPI_CMD_GET_HORIZONTAL_DIV],
+           (int *)&config->num_xdivs) != SR_OK)
+               return SR_ERR;
+
        if (sr_scpi_get_float(sdi->conn,
                        (*config->scpi_dialect)[SCPI_CMD_GET_HORIZ_TRIGGERPOS],
                        &tmp_float) != SR_OK)
@@ -603,13 +1114,44 @@ SR_PRIV int hmo_scope_state_get(struct sr_dev_inst *sdi)
 
        if (scope_state_get_array_option(sdi->conn,
                        (*config->scpi_dialect)[SCPI_CMD_GET_TRIGGER_SOURCE],
-                       config->trigger_sources, &state->trigger_source) != SR_OK)
+                       config->trigger_sources, config->num_trigger_sources,
+                       &state->trigger_source) != SR_OK)
                return SR_ERR;
 
        if (scope_state_get_array_option(sdi->conn,
-               (*config->scpi_dialect)[SCPI_CMD_GET_TRIGGER_SLOPE],
-               config->trigger_slopes, &state->trigger_slope) != SR_OK)
+                       (*config->scpi_dialect)[SCPI_CMD_GET_TRIGGER_SLOPE],
+                       config->trigger_slopes, config->num_trigger_slopes,
+                       &state->trigger_slope) != SR_OK)
+               return SR_ERR;
+
+       if (sr_scpi_get_string(sdi->conn,
+                              (*config->scpi_dialect)[SCPI_CMD_GET_TRIGGER_PATTERN],
+                              &tmp_str) != SR_OK)
+               return SR_ERR;
+       strncpy(state->trigger_pattern,
+               sr_scpi_unquote_string(tmp_str),
+               MAX_ANALOG_CHANNEL_COUNT + MAX_DIGITAL_CHANNEL_COUNT);
+       g_free(tmp_str);
+
+       if (sr_scpi_get_string(sdi->conn,
+                            (*config->scpi_dialect)[SCPI_CMD_GET_HIGH_RESOLUTION],
+                            &tmp_str) != SR_OK)
+               return SR_ERR;
+       if (!strcmp("OFF", tmp_str))
+               state->high_resolution = FALSE;
+       else
+               state->high_resolution = TRUE;
+       g_free(tmp_str);
+
+       if (sr_scpi_get_string(sdi->conn,
+                            (*config->scpi_dialect)[SCPI_CMD_GET_PEAK_DETECTION],
+                            &tmp_str) != SR_OK)
                return SR_ERR;
+       if (!strcmp("OFF", tmp_str))
+               state->peak_detection = FALSE;
+       else
+               state->peak_detection = TRUE;
+       g_free(tmp_str);
 
        if (hmo_update_sample_rate(sdi) != SR_OK)
                return SR_ERR;
@@ -631,7 +1173,7 @@ static struct scope_state *scope_state_new(const struct scope_config *config)
        state->digital_channels = g_malloc0_n(
                        config->digital_channels, sizeof(gboolean));
        state->digital_pods = g_malloc0_n(config->digital_pods,
-                       sizeof(gboolean));
+                       sizeof(struct digital_pod_state));
 
        return state;
 }
@@ -646,11 +1188,11 @@ SR_PRIV void hmo_scope_state_free(struct scope_state *state)
 
 SR_PRIV int hmo_init_device(struct sr_dev_inst *sdi)
 {
-       char tmp[25];
        int model_index;
-       unsigned int i, j;
+       unsigned int i, j, group;
        struct sr_channel *ch;
        struct dev_context *devc;
+       int ret;
 
        devc = sdi->priv;
        model_index = -1;
@@ -668,15 +1210,22 @@ SR_PRIV int hmo_init_device(struct sr_dev_inst *sdi)
        }
 
        if (model_index == -1) {
-               sr_dbg("Unsupported HMO device.");
+               sr_dbg("Unsupported device.");
                return SR_ERR_NA;
        }
 
+       /* Configure the number of PODs given the number of digital channels. */
+       scope_models[model_index].digital_pods = scope_models[model_index].digital_channels / DIGITAL_CHANNELS_PER_POD;
+
        devc->analog_groups = g_malloc0(sizeof(struct sr_channel_group*) *
                                        scope_models[model_index].analog_channels);
-
        devc->digital_groups = g_malloc0(sizeof(struct sr_channel_group*) *
                                         scope_models[model_index].digital_pods);
+       if (!devc->analog_groups || !devc->digital_groups) {
+               g_free(devc->analog_groups);
+               g_free(devc->digital_groups);
+               return SR_ERR_MALLOC;
+       }
 
        /* Add analog channels. */
        for (i = 0; i < scope_models[model_index].analog_channels; i++) {
@@ -694,26 +1243,32 @@ SR_PRIV int hmo_init_device(struct sr_dev_inst *sdi)
        }
 
        /* Add digital channel groups. */
+       ret = SR_OK;
        for (i = 0; i < scope_models[model_index].digital_pods; i++) {
-               g_snprintf(tmp, 25, "POD%d", i);
-
                devc->digital_groups[i] = g_malloc0(sizeof(struct sr_channel_group));
-
-               devc->digital_groups[i]->name = g_strdup(tmp);
+               if (!devc->digital_groups[i]) {
+                       ret = SR_ERR_MALLOC;
+                       break;
+               }
+               devc->digital_groups[i]->name = g_strdup_printf("POD%d", i + 1);
                sdi->channel_groups = g_slist_append(sdi->channel_groups,
-                                  devc->digital_groups[i < 8 ? 0 : 1]);
+                                  devc->digital_groups[i]);
        }
+       if (ret != SR_OK)
+               return ret;
 
        /* Add digital channels. */
        for (i = 0; i < scope_models[model_index].digital_channels; i++) {
                ch = sr_channel_new(sdi, i, SR_CHANNEL_LOGIC, TRUE,
                           (*scope_models[model_index].digital_names)[i]);
 
-               devc->digital_groups[i < 8 ? 0 : 1]->channels = g_slist_append(
-                       devc->digital_groups[i < 8 ? 0 : 1]->channels, ch);
+               group = i / DIGITAL_CHANNELS_PER_POD;
+               devc->digital_groups[group]->channels = g_slist_append(
+                       devc->digital_groups[group]->channels, ch);
        }
 
        devc->model_config = &scope_models[model_index];
+       devc->samples_limit = 0;
        devc->frame_limit = 0;
 
        if (!(devc->model_state = scope_state_new(devc->model_config)))
@@ -722,19 +1277,108 @@ SR_PRIV int hmo_init_device(struct sr_dev_inst *sdi)
        return SR_OK;
 }
 
+/* Queue data of one channel group, for later submission. */
+SR_PRIV void hmo_queue_logic_data(struct dev_context *devc,
+                                 size_t group, GByteArray *pod_data)
+{
+       size_t size;
+       GByteArray *store;
+       uint8_t *logic_data;
+       size_t idx, logic_step;
+
+       /*
+        * Upon first invocation, allocate the array which can hold the
+        * combined logic data for all channels. Assume that each channel
+        * will yield an identical number of samples per receive call.
+        *
+        * As a poor man's safety measure: (Silently) skip processing
+        * for unexpected sample counts, and ignore samples for
+        * unexpected channel groups. Don't bother with complicated
+        * resize logic, considering that many models only support one
+        * pod, and the most capable supported models have two pods of
+        * identical size. We haven't yet seen any "odd" configuration.
+        */
+       if (!devc->logic_data) {
+               size = pod_data->len * devc->pod_count;
+               store = g_byte_array_sized_new(size);
+               memset(store->data, 0, size);
+               store = g_byte_array_set_size(store, size);
+               devc->logic_data = store;
+       } else {
+               store = devc->logic_data;
+               size = store->len / devc->pod_count;
+               if (group >= devc->pod_count)
+                       return;
+       }
+
+       /*
+        * Fold the data of the most recently received channel group into
+        * the storage, where data resides for all channels combined.
+        */
+       logic_data = store->data;
+       logic_data += group;
+       logic_step = devc->pod_count;
+       for (idx = 0; idx < pod_data->len; idx++) {
+               *logic_data = pod_data->data[idx];
+               logic_data += logic_step;
+       }
+
+       /* Truncate acquisition if a smaller number of samples has been requested. */
+       if (devc->samples_limit > 0 && devc->logic_data->len > devc->samples_limit * devc->pod_count)
+               devc->logic_data->len = devc->samples_limit * devc->pod_count;
+}
+
+/* Submit data for all channels, after the individual groups got collected. */
+SR_PRIV void hmo_send_logic_packet(struct sr_dev_inst *sdi,
+                                  struct dev_context *devc)
+{
+       struct sr_datafeed_packet packet;
+       struct sr_datafeed_logic logic;
+
+       if (!devc->logic_data)
+               return;
+
+       logic.data = devc->logic_data->data;
+       logic.length = devc->logic_data->len;
+       logic.unitsize = devc->pod_count;
+
+       packet.type = SR_DF_LOGIC;
+       packet.payload = &logic;
+
+       sr_session_send(sdi, &packet);
+}
+
+/* Undo previous resource allocation. */
+SR_PRIV void hmo_cleanup_logic_data(struct dev_context *devc)
+{
+
+       if (devc->logic_data) {
+               g_byte_array_free(devc->logic_data, TRUE);
+               devc->logic_data = NULL;
+       }
+       /*
+        * Keep 'pod_count'! It's required when more frames will be
+        * received, and does not harm when kept after acquisition.
+        */
+}
+
 SR_PRIV int hmo_receive_data(int fd, int revents, void *cb_data)
 {
        struct sr_channel *ch;
        struct sr_dev_inst *sdi;
        struct dev_context *devc;
+       struct scope_state *state;
        struct sr_datafeed_packet packet;
-       GArray *data;
-       struct sr_datafeed_analog_old analog;
+       GByteArray *data;
+       struct sr_datafeed_analog analog;
+       struct sr_analog_encoding encoding;
+       struct sr_analog_meaning meaning;
+       struct sr_analog_spec spec;
        struct sr_datafeed_logic logic;
+       size_t group;
 
        (void)fd;
-
-       data = NULL;
+       (void)revents;
 
        if (!(sdi = cb_data))
                return TRUE;
@@ -742,52 +1386,98 @@ SR_PRIV int hmo_receive_data(int fd, int revents, void *cb_data)
        if (!(devc = sdi->priv))
                return TRUE;
 
+       /* Although this is correct in general, the USBTMC libusb implementation
+        * currently does not generate an event prior to the first read. Often
+        * it is ok to start reading just after the 50ms timeout. See bug #785.
        if (revents != G_IO_IN)
                return TRUE;
+       */
 
        ch = devc->current_channel->data;
+       state = devc->model_state;
+
+       /*
+        * Send "frame begin" packet upon reception of data for the
+        * first enabled channel.
+        */
+       if (devc->current_channel == devc->enabled_channels)
+               std_session_send_df_frame_begin(sdi);
 
+       /*
+        * Pass on the received data of the channel(s).
+        */
        switch (ch->type) {
        case SR_CHANNEL_ANALOG:
-               if (sr_scpi_get_floatv(sdi->conn, NULL, &data) != SR_OK) {
+               data = NULL;
+               if (sr_scpi_get_block(sdi->conn, NULL, &data) != SR_OK) {
                        if (data)
-                               g_array_free(data, TRUE);
-
+                               g_byte_array_free(data, TRUE);
                        return TRUE;
                }
 
-               packet.type = SR_DF_FRAME_BEGIN;
-               sr_session_send(sdi, &packet);
-
-               analog.channels = g_slist_append(NULL, ch);
-               analog.num_samples = data->len;
-               analog.data = (float *) data->data;
-               analog.mq = SR_MQ_VOLTAGE;
-               analog.unit = SR_UNIT_VOLT;
-               analog.mqflags = 0;
-               packet.type = SR_DF_ANALOG_OLD;
+               packet.type = SR_DF_ANALOG;
+
+               analog.data = data->data;
+               analog.num_samples = data->len / sizeof(float);
+               /* Truncate acquisition if a smaller number of samples has been requested. */
+               if (devc->samples_limit > 0 && analog.num_samples > devc->samples_limit)
+                       analog.num_samples = devc->samples_limit;
+               /* TODO: Use proper 'digits' value for this device (and its modes). */
+               sr_analog_init(&analog, &encoding, &meaning, &spec, 2);
+               encoding.is_signed = TRUE;
+               if (state->analog_channels[ch->index].probe_unit == 'V') {
+                       meaning.mq = SR_MQ_VOLTAGE;
+                       meaning.unit = SR_UNIT_VOLT;
+               } else {
+                       meaning.mq = SR_MQ_CURRENT;
+                       meaning.unit = SR_UNIT_AMPERE;
+               }
+               meaning.channels = g_slist_append(NULL, ch);
                packet.payload = &analog;
-               sr_session_send(cb_data, &packet);
-               g_slist_free(analog.channels);
-               g_array_free(data, TRUE);
+               sr_session_send(sdi, &packet);
+               devc->num_samples = data->len / sizeof(float);
+               g_slist_free(meaning.channels);
+               g_byte_array_free(data, TRUE);
                data = NULL;
                break;
        case SR_CHANNEL_LOGIC:
-               if (sr_scpi_get_uint8v(sdi->conn, NULL, &data) != SR_OK) {
-                       g_free(data);
+               data = NULL;
+               if (sr_scpi_get_block(sdi->conn, NULL, &data) != SR_OK) {
+                       if (data)
+                               g_byte_array_free(data, TRUE);
                        return TRUE;
                }
 
-               packet.type = SR_DF_FRAME_BEGIN;
-               sr_session_send(sdi, &packet);
+               /*
+                * If only data from the first pod is involved in the
+                * acquisition, then the raw input bytes can get passed
+                * forward for performance reasons. When the second pod
+                * is involved (either alone, or in combination with the
+                * first pod), then the received bytes need to be put
+                * into memory in such a layout that all channel groups
+                * get combined, and a unitsize larger than a single byte
+                * applies. The "queue" logic transparently copes with
+                * any such configuration. This works around the lack
+                * of support for "meaning" to logic data, which is used
+                * above for analog data.
+                */
+               if (devc->pod_count == 1) {
+                       packet.type = SR_DF_LOGIC;
+                       logic.data = data->data;
+                       logic.length = data->len;
+                       /* Truncate acquisition if a smaller number of samples has been requested. */
+                       if (devc->samples_limit > 0 && logic.length > devc->samples_limit)
+                               logic.length = devc->samples_limit;
+                       logic.unitsize = 1;
+                       packet.payload = &logic;
+                       sr_session_send(sdi, &packet);
+               } else {
+                       group = ch->index / DIGITAL_CHANNELS_PER_POD;
+                       hmo_queue_logic_data(devc, group, data);
+               }
 
-               logic.length = data->len;
-               logic.unitsize = 1;
-               logic.data = data->data;
-               packet.type = SR_DF_LOGIC;
-               packet.payload = &logic;
-               sr_session_send(cb_data, &packet);
-               g_array_free(data, TRUE);
+               devc->num_samples = data->len / devc->pod_count;
+               g_byte_array_free(data, TRUE);
                data = NULL;
                break;
        default:
@@ -795,14 +1485,36 @@ SR_PRIV int hmo_receive_data(int fd, int revents, void *cb_data)
                break;
        }
 
-       packet.type = SR_DF_FRAME_END;
-       sr_session_send(sdi, &packet);
-
+       /*
+        * Advance to the next enabled channel. When data for all enabled
+        * channels was received, then flush potentially queued logic data,
+        * and send the "frame end" packet.
+        */
        if (devc->current_channel->next) {
                devc->current_channel = devc->current_channel->next;
                hmo_request_data(sdi);
-       } else if (++devc->num_frames == devc->frame_limit) {
-               sdi->driver->dev_acquisition_stop(sdi, cb_data);
+               return TRUE;
+       }
+       hmo_send_logic_packet(sdi, devc);
+
+       /*
+        * Release the logic data storage after each frame. This copes
+        * with sample counts that differ in length per frame. -- Is
+        * this a real constraint when acquiring multiple frames with
+        * identical device settings?
+        */
+       hmo_cleanup_logic_data(devc);
+
+       std_session_send_df_frame_end(sdi);
+
+       /*
+        * End of frame was reached. Stop acquisition after the specified
+        * number of frames or after the specified number of samples, or
+        * continue reception by starting over at the first enabled channel.
+        */
+       if (++devc->num_frames >= devc->frame_limit || devc->num_samples >= devc->samples_limit) {
+               sr_dev_acquisition_stop(sdi);
+               hmo_cleanup_logic_data(devc);
        } else {
                devc->current_channel = devc->enabled_channels;
                hmo_request_data(sdi);