norma-dmm: Use software limit helpers

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>

src/hardware/norma-dmm/api.c

@@ -139,9 +139,9 @@ static GSList *scan(struct sr_dev_driver *drv, GSList *options)
 			sdi->model = g_strdup(get_typestr(auxtype, drv));
 			sdi->version = g_strdup(buf + 9);
 			devc = g_malloc0(sizeof(struct dev_context));
+			sr_sw_limits_init(&devc->limits);
 			devc->type = auxtype;
 			devc->version = g_strdup(&buf[9]);
-			devc->elapsed_msec = g_timer_new();
 			sdi->conn = serial;
 			sdi->priv = devc;
 			sdi->driver = drv;
@@ -182,7 +182,6 @@ static int dev_close(struct sr_dev_inst *sdi)
 	if ((devc = sdi->priv) && devc->version) {
 		g_free(devc->version);
 		devc->version = NULL;
-		g_timer_destroy(devc->elapsed_msec);
 	}
 
 	return SR_OK;
@@ -203,18 +202,7 @@ static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sd
 		return SR_ERR_BUG;
 	}
 
-	switch (key) {
+	return sr_sw_limits_config_set(&devc->limits, key, data);
-	case SR_CONF_LIMIT_MSEC:
-		devc->limit_msec = g_variant_get_uint64(data);
-		break;
-	case SR_CONF_LIMIT_SAMPLES:
-		devc->limit_samples = g_variant_get_uint64(data);
-		break;
-	default:
-		return SR_ERR_NA;
-	}
-
-	return SR_OK;
 }
 
 static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
@@ -249,12 +237,9 @@ static int dev_acquisition_start(const struct sr_dev_inst *sdi)
 
 	devc = sdi->priv;
 
+	sr_sw_limits_acquisition_start(&devc->limits);
 	std_session_send_df_header(sdi, LOG_PREFIX);
 
-	/* Start timer, if required. */
-	if (devc->limit_msec)
-		g_timer_start(devc->elapsed_msec);
-
 	/* Poll every 100ms, or whenever some data comes in. */
 	serial = sdi->conn;
 	serial_source_add(sdi->session, serial, G_IO_IN, 100,
@@ -265,12 +250,6 @@ static int dev_acquisition_start(const struct sr_dev_inst *sdi)
 
 static int dev_acquisition_stop(struct sr_dev_inst *sdi)
 {
-	struct dev_context *devc;
-
-	/* Stop timer, if required. */
-	if (sdi && (devc = sdi->priv) && devc->limit_msec)
-		g_timer_stop(devc->elapsed_msec);
-
 	return std_serial_dev_acquisition_stop(sdi, dev_close,
 			sdi->conn, LOG_PREFIX);
 }

src/hardware/norma-dmm/protocol.c

@@ -369,7 +369,7 @@ static void nma_process_line(const struct sr_dev_inst *sdi)
 	sr_session_send(sdi, &packet);
 
 	/* Finish processing. */
-	devc->num_samples++;
+	sr_sw_limits_update_samples_read(&devc->limits, 1);
 	devc->buflen = 0;
 }
 
@@ -379,8 +379,6 @@ SR_PRIV int norma_dmm_receive_data(int fd, int revents, void *cb_data)
 	struct dev_context *devc;
 	struct sr_serial_dev_inst *serial;
 	int len;
-	gboolean terminating;
-	gdouble elapsed_s;
 
 	(void)fd;
 
@@ -411,23 +409,10 @@ SR_PRIV int norma_dmm_receive_data(int fd, int revents, void *cb_data)
 		}
 	}
 
-	/* If number of samples or time limit reached, stop acquisition. */
+	if (sr_sw_limits_check(&devc->limits)) {
-	terminating = FALSE;
-	if (devc->limit_samples && (devc->num_samples >= devc->limit_samples)) {
 		sdi->driver->dev_acquisition_stop(sdi);
-		terminating = TRUE;
+	} else {
-	}
+		/* Request next package. */
-
-	if (devc->limit_msec) {
-		elapsed_s = g_timer_elapsed(devc->elapsed_msec, NULL);
-		if ((elapsed_s * 1000) >= devc->limit_msec) {
-			sdi->driver->dev_acquisition_stop(sdi);
-			terminating = TRUE;
-		}
-	}
-
-	/* Request next package. */
-	if (!terminating) {
 		if (devc->last_req_pending) {
 			gint64 elapsed_us = g_get_monotonic_time() - devc->req_sent_at;
 			if (elapsed_us > NMADMM_TIMEOUT_MS * 1000) {/* Timeout! */

src/hardware/norma-dmm/protocol.h

@@ -61,8 +61,7 @@ struct dev_context {
 	int type;		/**< DM9x0, e.g. 5 = DM950 */
 
 	/* Acquisition settings */
-	uint64_t limit_samples;	/**< Target number of samples */
+	struct sr_sw_limits limits;
-	uint64_t limit_msec;	/**< Target sampling time */
 
 	/* Operational state */
 	int last_req;			/**< Last request. */
@@ -71,8 +70,6 @@ struct dev_context {
 	int lowbatt;			/**< Low battery. 1=low, 2=critical. */
 
 	/* Temporary state across callbacks */
-	uint64_t num_samples;		/**< Current #samples. */
-	GTimer *elapsed_msec;		/**< Used for limit_msec */
 	uint8_t buf[NMADMM_BUFSIZE];	/**< Buffer for read callback */
 	int buflen;			/**< Data len in buf */
 };