brymen-dmm: Use software limit helpers

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

src/hardware/brymen-dmm/api.c

@@ -79,6 +79,7 @@ static GSList *brymen_scan(const char *conn, const char *serialcomm)
 	sdi->vendor = g_strdup("Brymen");
 	sdi->model = g_strdup("BM85x");
 	devc = g_malloc0(sizeof(struct dev_context));
+	sr_sw_limits_init(&devc->sw_limits);
 	sdi->inst_type = SR_INST_SERIAL;
 	sdi->conn = serial;
 	drvc = di->context;
@@ -135,7 +136,6 @@ static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sd
 		const struct sr_channel_group *cg)
 {
 	struct dev_context *devc;
-	int ret;
 
 	(void)cg;
 
@@ -147,19 +147,7 @@ static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sd
 		return SR_ERR_BUG;
 	}
 
-	ret = SR_OK;
+	return sr_sw_limits_config_set(&devc->sw_limits, key, data);
-	switch (key) {
-	case SR_CONF_LIMIT_SAMPLES:
-		devc->limit_samples = g_variant_get_uint64(data);
-		break;
-	case SR_CONF_LIMIT_MSEC:
-		devc->limit_msec = g_variant_get_uint64(data);
-		break;
-	default:
-		ret = SR_ERR_NA;
-	}
-
-	return ret;
 }
 
 static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
@@ -194,14 +182,7 @@ static int dev_acquisition_start(const struct sr_dev_inst *sdi)
 
 	devc = sdi->priv;
 
-	/*
+	sr_sw_limits_acquisition_start(&devc->sw_limits);
-	 * Reset the number of samples to take. If we've already collected our
-	 * quota, but we start a new session, and don't reset this, we'll just
-	 * quit without acquiring any new samples.
-	 */
-	devc->num_samples = 0;
-	devc->starttime = g_get_monotonic_time();
-
 	std_session_send_df_header(sdi, LOG_PREFIX);
 
 	/* Poll every 50ms, or whenever some data comes in. */

src/hardware/brymen-dmm/protocol.c

@@ -43,7 +43,7 @@ static void handle_packet(const uint8_t *buf, struct sr_dev_inst *sdi)
 		packet.type = SR_DF_ANALOG_OLD;
 		packet.payload = &analog;
 		sr_session_send(sdi, &packet);
-		devc->num_samples++;
+		sr_sw_limits_update_samples_read(&devc->sw_limits, 1);
 	}
 }
 
@@ -114,7 +114,6 @@ SR_PRIV int brymen_dmm_receive_data(int fd, int revents, void *cb_data)
 	struct dev_context *devc;
 	struct sr_serial_dev_inst *serial;
 	int ret;
-	int64_t time;
 
 	(void)fd;
 
@@ -137,20 +136,8 @@ SR_PRIV int brymen_dmm_receive_data(int fd, int revents, void *cb_data)
 		}
 	}
 
-	if (devc->limit_samples && devc->num_samples >= devc->limit_samples) {
+	if (sr_sw_limits_check(&devc->sw_limits))
-		sr_info("Requested number of samples reached, stopping.");
 		sdi->driver->dev_acquisition_stop(sdi);
-		return TRUE;
-	}
-
-	if (devc->limit_msec) {
-		time = (g_get_monotonic_time() - devc->starttime) / 1000;
-		if (time > (int64_t)devc->limit_msec) {
-			sr_info("Requested time limit reached, stopping.");
-			sdi->driver->dev_acquisition_stop(sdi);
-			return TRUE;
-		}
-	}
 
 	return TRUE;
 }

src/hardware/brymen-dmm/protocol.h

@@ -40,17 +40,7 @@ enum packet_len_status {
 
 /** Private, per-device-instance driver context. */
 struct dev_context {
-	/** The current sampling limit (in number of samples). */
+	struct sr_sw_limits sw_limits;
-	uint64_t limit_samples;
-
-	/** The current sampling limit (in ms). */
-	uint64_t limit_msec;
-
-	/** The current number of already received samples. */
-	uint64_t num_samples;
-
-	/** Start time of acquisition session */
-	int64_t starttime;
 
 	uint8_t buf[DMM_BUFSIZE];
 	int bufoffset;