Add sr_dev_acquisition_start(), factor out SR_ERR_DEV_CLOSED check.

[libsigrok.git] / src / hwdriver.c

diff --git a/src/hwdriver.c b/src/hwdriver.c
index 6f467edb17278f09ca26981404f0af6085a7f4bf..b16dcd34f6f28af0ed8317397f483a74d84eacdb 100644 (file)
--- a/src/hwdriver.c
+++ b/src/hwdriver.c
@@ -592,6 +592,25 @@ SR_PRIV void sr_config_free(struct sr_config *src)
 
 }
 
+/** @private */
+SR_PRIV int sr_dev_acquisition_start(struct sr_dev_inst *sdi)
+{
+       if (!sdi || !sdi->driver) {
+               sr_err("%s: Invalid arguments.", __func__);
+               return SR_ERR_ARG;
+       }
+
+       if (sdi->status != SR_ST_ACTIVE) {
+               sr_err("%s: Device instance not active, can't start.",
+                       sdi->driver->name);
+               return SR_ERR_DEV_CLOSED;
+       }
+
+       sr_dbg("%s: Starting acquisition.", sdi->driver->name);
+
+       return sdi->driver->dev_acquisition_start(sdi);
+}
+
 /** @private */
 SR_PRIV int sr_dev_acquisition_stop(struct sr_dev_inst *sdi)
 {