serial-dmm: Handle time-limited acquisition

[libsigrok.git] / hardware / serial-dmm / protocol.c

diff --git a/hardware/serial-dmm/protocol.c b/hardware/serial-dmm/protocol.c
index 09f74dd4c56cfb6e750615fddfabf3b40ac9d7c3..9524f2bd92dbfee13a591584f67bd36d9956b994 100644 (file)
--- a/hardware/serial-dmm/protocol.c
+++ b/hardware/serial-dmm/protocol.c
@@ -153,6 +153,7 @@ static int receive_data(int fd, int revents, int dmm, void *info, void *cb_data)
 {
        struct sr_dev_inst *sdi;
        struct dev_context *devc;
+       int64_t time;
        int ret;
 
        (void)fd;
@@ -183,6 +184,15 @@ static int receive_data(int fd, int revents, int dmm, void *info, void *cb_data)
                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, cb_data);
+                       return TRUE;
+               }
+       }
+
        return TRUE;
 }