hameg-hmo: Get SCPI_CMD_GET_HORIZONTAL_DIV at runtime.

Get the number of horizontal divisions from the device (at runtime)
instead of hardcoding its value in the driver.

diff --git a/src/hardware/hameg-hmo/protocol.c b/src/hardware/hameg-hmo/protocol.c
index 9135601c73f905010c04f3a6b932910ba0eff3f4..167c1a4fe5e9960d4f1a0df91e76c20ef9209857 100644 (file)
--- a/src/hardware/hameg-hmo/protocol.c
+++ b/src/hardware/hameg-hmo/protocol.c
@@ -34,6 +34,7 @@ static const char *hameg_scpi_dialect[] = {
        [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?",
@@ -71,6 +72,7 @@ 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?",
@@ -364,7 +366,6 @@ static struct scope_config scope_models[] = {
                .vdivs = &vdivs,
                .num_vdivs = ARRAY_SIZE(vdivs),
 
-               .num_xdivs = 12,
                .num_ydivs = 8,
 
                .scpi_dialect = &hameg_scpi_dialect,
@@ -406,7 +407,6 @@ static struct scope_config scope_models[] = {
                .vdivs = &vdivs,
                .num_vdivs = ARRAY_SIZE(vdivs),
 
-               .num_xdivs = 12,
                .num_ydivs = 8,
 
                .scpi_dialect = &hameg_scpi_dialect,
@@ -448,7 +448,6 @@ static struct scope_config scope_models[] = {
                .vdivs = &vdivs,
                .num_vdivs = ARRAY_SIZE(vdivs),
 
-               .num_xdivs = 12,
                .num_ydivs = 8,
 
                .scpi_dialect = &hameg_scpi_dialect,
@@ -490,7 +489,6 @@ static struct scope_config scope_models[] = {
                .vdivs = &vdivs,
                .num_vdivs = ARRAY_SIZE(vdivs),
 
-               .num_xdivs = 12,
                .num_ydivs = 8,
 
                .scpi_dialect = &hameg_scpi_dialect,
@@ -531,7 +529,6 @@ static struct scope_config scope_models[] = {
                .vdivs = &vdivs,
                .num_vdivs = ARRAY_SIZE(vdivs),
 
-               .num_xdivs = 12,
                .num_ydivs = 8,
 
                .scpi_dialect = &hameg_scpi_dialect,
@@ -572,7 +569,6 @@ static struct scope_config scope_models[] = {
                .vdivs = &vdivs,
                .num_vdivs = ARRAY_SIZE(vdivs),
 
-               .num_xdivs = 12,
                .num_ydivs = 8,
 
                .scpi_dialect = &rohde_schwarz_log_not_pod_scpi_dialect,
@@ -613,7 +609,6 @@ static struct scope_config scope_models[] = {
                .vdivs = &vdivs,
                .num_vdivs = ARRAY_SIZE(vdivs),
 
-               .num_xdivs = 12,
                .num_ydivs = 8,
 
                .scpi_dialect = &rohde_schwarz_log_not_pod_scpi_dialect,
@@ -654,7 +649,6 @@ static struct scope_config scope_models[] = {
                .vdivs = &vdivs,
                .num_vdivs = ARRAY_SIZE(vdivs),
 
-               .num_xdivs = 12,
                .num_ydivs = 8,
 
                .scpi_dialect = &rohde_schwarz_log_not_pod_scpi_dialect,
@@ -695,7 +689,6 @@ static struct scope_config scope_models[] = {
                .vdivs = &vdivs,
                .num_vdivs = ARRAY_SIZE(vdivs),
 
-               .num_xdivs = 12,
                .num_ydivs = 8,
 
                .scpi_dialect = &rohde_schwarz_log_not_pod_scpi_dialect,
@@ -736,7 +729,6 @@ static struct scope_config scope_models[] = {
                .vdivs = &vdivs,
                .num_vdivs = ARRAY_SIZE(vdivs),
 
-               .num_xdivs = 12,
                .num_ydivs = 8,
 
                .scpi_dialect = &rohde_schwarz_log_not_pod_scpi_dialect,
@@ -1091,6 +1083,12 @@ SR_PRIV int hmo_scope_state_get(struct sr_dev_inst *sdi)
 
        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)
@@ -1182,6 +1180,7 @@ SR_PRIV int hmo_init_device(struct sr_dev_inst *sdi)
                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;
 

diff --git a/src/hardware/hameg-hmo/protocol.h b/src/hardware/hameg-hmo/protocol.h
index df4a4e4c12f7d3de20bb2319d81cae33c49e745f..975ea7e342e311b3c3234e03f29323d5bc997b1a 100644 (file)
--- a/src/hardware/hameg-hmo/protocol.h
+++ b/src/hardware/hameg-hmo/protocol.h
@@ -73,8 +73,8 @@ struct scope_config {
        const uint64_t (*vdivs)[][2];
        const uint8_t num_vdivs;
 
-       const uint8_t num_xdivs;
-       const uint8_t num_ydivs;
+       unsigned int num_xdivs;
+       const unsigned int num_ydivs;
 
        const char *(*scpi_dialect)[];
 };

diff --git a/src/scpi.h b/src/scpi.h
index b66dd554d5048851ca0362ef1cefd0fbad046889..7d9a39bb75d8cd91e8891cfe53931fb024f2407c 100644 (file)
--- a/src/scpi.h
+++ b/src/scpi.h
@@ -35,6 +35,7 @@
 enum {
        SCPI_CMD_GET_TIMEBASE = 1,
        SCPI_CMD_SET_TIMEBASE,
+       SCPI_CMD_GET_HORIZONTAL_DIV,
        SCPI_CMD_GET_VERTICAL_SCALE,
        SCPI_CMD_SET_VERTICAL_SCALE,
        SCPI_CMD_GET_TRIGGER_SLOPE,