drivers: Use array-based approach in some places.

[libsigrok.git] / src / hardware / hameg-hmo / protocol.c

diff --git a/src/hardware/hameg-hmo/protocol.c b/src/hardware/hameg-hmo/protocol.c
index fb7fecb271f2fcef0c90f5dc80ded8df221176c3..6d2ad3c413a92466e36ba88297dfbfa5725bf386 100644 (file)
--- a/src/hardware/hameg-hmo/protocol.c
+++ b/src/hardware/hameg-hmo/protocol.c
@@ -80,28 +80,24 @@ static const char *coupling_options[] = {
        "DC",  // DC with 50 Ohm termination
        "DCL", // DC with 1 MOhm termination
        "GND",
-       NULL,
 };
 
 static const char *scope_trigger_slopes[] = {
        "POS",
        "NEG",
        "EITH",
-       NULL,
 };
 
 static const char *compact2_trigger_sources[] = {
        "CH1", "CH2",
        "LINE", "EXT", "PATT", "BUS1", "BUS2",
        "D0", "D1", "D2", "D3", "D4", "D5", "D6", "D7",
-       NULL,
 };
 
 static const char *compact4_trigger_sources[] = {
        "CH1", "CH2", "CH3", "CH4",
        "LINE", "EXT", "PATT", "BUS1", "BUS2",
        "D0", "D1", "D2", "D3", "D4", "D5", "D6", "D7",
-       NULL,
 };
 
 static const char *compact4_dig16_trigger_sources[] = {
@@ -109,7 +105,6 @@ static const char *compact4_dig16_trigger_sources[] = {
        "LINE", "EXT", "PATT", "BUS1", "BUS2",
        "D0", "D1", "D2", "D3", "D4", "D5", "D6", "D7",
        "D8", "D9", "D10", "D11", "D12", "D13", "D14", "D15",
-       NULL,
 };
 
 static const uint64_t timebases[][2] = {
@@ -199,8 +194,13 @@ static const struct scope_config scope_models[] = {
                .num_devopts_cg_analog = ARRAY_SIZE(devopts_cg_analog),
 
                .coupling_options = &coupling_options,
+               .num_coupling_options = ARRAY_SIZE(coupling_options),
+
                .trigger_sources = &compact2_trigger_sources,
+               .num_trigger_sources = ARRAY_SIZE(compact2_trigger_sources),
+
                .trigger_slopes = &scope_trigger_slopes,
+               .num_trigger_slopes = ARRAY_SIZE(scope_trigger_slopes),
 
                .timebases = &timebases,
                .num_timebases = ARRAY_SIZE(timebases),
@@ -229,8 +229,13 @@ static const struct scope_config scope_models[] = {
                .num_devopts_cg_analog = ARRAY_SIZE(devopts_cg_analog),
 
                .coupling_options = &coupling_options,
+               .num_coupling_options = ARRAY_SIZE(coupling_options),
+
                .trigger_sources = &compact4_trigger_sources,
+               .num_trigger_sources = ARRAY_SIZE(compact4_trigger_sources),
+
                .trigger_slopes = &scope_trigger_slopes,
+               .num_trigger_slopes = ARRAY_SIZE(scope_trigger_slopes),
 
                .timebases = &timebases,
                .num_timebases = ARRAY_SIZE(timebases),
@@ -259,8 +264,13 @@ static const struct scope_config scope_models[] = {
                .num_devopts_cg_analog = ARRAY_SIZE(devopts_cg_analog),
 
                .coupling_options = &coupling_options,
+               .num_coupling_options = ARRAY_SIZE(coupling_options),
+
                .trigger_sources = &compact4_dig16_trigger_sources,
+               .num_trigger_sources = ARRAY_SIZE(compact4_dig16_trigger_sources),
+
                .trigger_slopes = &scope_trigger_slopes,
+               .num_trigger_slopes = ARRAY_SIZE(scope_trigger_slopes),
 
                .timebases = &timebases,
                .num_timebases = ARRAY_SIZE(timebases),
@@ -316,7 +326,7 @@ static void scope_state_dump(const struct scope_config *config,
 }
 
 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;
@@ -326,7 +336,7 @@ static int scope_state_get_array_option(struct sr_scpi_dev_inst *scpi,
                return SR_ERR;
        }
 
-       for (i = 0; (*array)[i]; i++) {
+       for (i = 0; i < n; i++) {
                if (!g_strcmp0(tmp, (*array)[i])) {
                        *result = i;
                        g_free(tmp);
@@ -420,6 +430,7 @@ 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;
 
@@ -584,12 +595,14 @@ 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 (hmo_update_sample_rate(sdi) != SR_OK)