manson-hcs-3xxx: Use maximum voltage and current read from device.

diff --git a/hardware/manson-hcs-3xxx/api.c b/hardware/manson-hcs-3xxx/api.c
index 99b8051b217f17422c47b021556b7676153ee4ff..dead308546e5685aed85164c1c25d5d297b12d13 100644 (file)
--- a/hardware/manson-hcs-3xxx/api.c
+++ b/hardware/manson-hcs-3xxx/api.c
@@ -91,7 +91,7 @@ static GSList *scan(GSList *options)
        GSList *devices, *l;
        const char *conn, *serialcomm;
        struct sr_serial_dev_inst *serial;
-       char reply[50], **tokens;
+       char reply[50], **tokens, *dummy;
 
        drvc = di->priv;
        drvc->instances = NULL;
@@ -171,13 +171,24 @@ static GSList *scan(GSList *options)
 
        sdi->priv = devc;
 
-       /* Get current device status. */
+       /* Get current voltage, current, status. */
        if ((hcs_send_cmd(serial, "GETD\r") < 0) ||
            (hcs_read_reply(serial, 2, reply, sizeof(reply)) < 0))
-               return NULL;
+               goto exit_err;
        tokens = g_strsplit((const gchar *)&reply, "\r", 2);
        if (hcs_parse_volt_curr_mode(sdi, tokens) < 0)
                goto exit_err;
+       g_strfreev(tokens);
+
+       /* Get max. voltage and current. */
+       if ((hcs_send_cmd(serial, "GMAX\r") < 0) ||
+           (hcs_read_reply(serial, 2, reply, sizeof(reply)) < 0))
+               goto exit_err;
+       tokens = g_strsplit((const gchar *)&reply, "\r", 2);
+       devc->current_max_device = g_strtod(&tokens[0][3], &dummy) * devc->model->current[2];
+       tokens[0][3] = '\0';
+       devc->voltage_max_device = g_strtod(tokens[0], &dummy) * devc->model->voltage[2];
+       g_strfreev(tokens);
 
        drvc->instances = g_slist_append(drvc->instances, sdi);
        devices = g_slist_append(devices, sdi);
@@ -273,7 +284,7 @@ static int config_set(int key, GVariant *data, const struct sr_dev_inst *sdi,
                break;
        case SR_CONF_OUTPUT_CURRENT_MAX:
                dval = g_variant_get_double(data);
-               if (dval < devc->model->current[0] || dval > devc->model->current[1])
+               if (dval < devc->model->current[0] || dval > devc->current_max_device)
                        return SR_ERR_ARG;
 
                if ((hcs_send_cmd(sdi->conn, "CURR%03.0f\r",
@@ -293,7 +304,7 @@ static int config_set(int key, GVariant *data, const struct sr_dev_inst *sdi,
                break;
        case SR_CONF_OUTPUT_VOLTAGE_MAX:
                dval = g_variant_get_double(data);
-               if (dval < devc->model->voltage[0] || dval > devc->model->voltage[1])
+               if (dval < devc->model->voltage[0] || dval > devc->voltage_max_device)
                        return SR_ERR_ARG;
 
                if ((hcs_send_cmd(sdi->conn, "VOLT%03.0f\r",
@@ -315,6 +326,7 @@ static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi,
        struct dev_context *devc;
        GVariant *gvar;
        GVariantBuilder gvb;
+       double dval;
        int idx;
 
        (void)cg;
@@ -336,7 +348,11 @@ static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi,
                g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
                /* Min, max, step. */
                for (idx = 0; idx < 3; idx++) {
-                       gvar = g_variant_new_double(devc->model->current[idx]);
+                       if (idx == 1)
+                               dval = devc->current_max_device;
+                       else
+                               dval = devc->model->current[idx];
+                       gvar = g_variant_new_double(dval);
                        g_variant_builder_add_value(&gvb, gvar);
                }
                *data = g_variant_builder_end(&gvb);
@@ -345,7 +361,11 @@ static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi,
                g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
                /* Min, max, step. */
                for (idx = 0; idx < 3; idx++) {
-                       gvar = g_variant_new_double(devc->model->voltage[idx]);
+                       if (idx == 1)
+                               dval = devc->voltage_max_device;
+                       else
+                               dval = devc->model->voltage[idx];
+                       gvar = g_variant_new_double(dval);
                        g_variant_builder_add_value(&gvb, gvar);
                }
                *data = g_variant_builder_end(&gvb);

diff --git a/hardware/manson-hcs-3xxx/protocol.h b/hardware/manson-hcs-3xxx/protocol.h
index f5cd77f89a5211472645bc2331e3d27508d3d147..b4441d070658d65f23187a6556492bb2703be536 100644 (file)
--- a/hardware/manson-hcs-3xxx/protocol.h
+++ b/hardware/manson-hcs-3xxx/protocol.h
@@ -78,9 +78,11 @@ struct dev_context {
        void *cb_data;
 
        float current;          /**< Last current value [A] read from device. */
-       float current_max;      /**< Output current set */
+       float current_max;      /**< Output current set. */
+       float current_max_device;/**< Device-provided maximum output current. */
        float voltage;          /**< Last voltage value [V] read from device. */
-       float voltage_max;      /**< Output voltage set */
+       float voltage_max;      /**< Output voltage set. */
+       float voltage_max_device;/**< Device-provided maximum output voltage. */
        gboolean cc_mode;       /**< Device is in constant current mode (otherwise constant voltage). */
 
        gboolean output_enabled; /**< Is the output enabled? */