serial-lcr: add support for packet request

[libsigrok.git] / src / hardware / serial-lcr / api.c

diff --git a/src/hardware/serial-lcr/api.c b/src/hardware/serial-lcr/api.c
index 5bf5f1840fec14715bfcf21b1a4c2b7494315fe3..0919ae8891f71e580b7b74287adcc4f50edc4311 100644 (file)
--- a/src/hardware/serial-lcr/api.c
+++ b/src/hardware/serial-lcr/api.c
@@ -135,8 +135,15 @@ static GSList *scan(struct sr_dev_driver *di, GSList *options)
         * send data periodically. So we check if the packets match the
         * probed device's expected format.
         */
-       serial_flush(serial);
        devices = NULL;
+       serial_flush(serial);
+       if (lcr->packet_request) {
+               ret = lcr->packet_request(serial);
+               if (ret < 0) {
+                       sr_err("Failed to request packet: %d.", ret);
+                       goto scan_cleanup;
+               }
+       }
        len = sizeof(buf);
        ret = serial_stream_detect(serial, buf, &len,
                lcr->packet_size, lcr->packet_valid, 3000);
@@ -329,6 +336,7 @@ static int dev_acquisition_start(const struct sr_dev_inst *sdi)
                }, \
                vendor, model, ES51919_CHANNEL_COUNT, NULL, \
                ES51919_COMM_PARAM, ES51919_PACKET_SIZE, \
+               0, NULL, \
                es51919_packet_valid, es51919_packet_parse, \
                NULL, NULL, es51919_config_list, \
        }).di