moving gpio control to the rx

targets/ARCH/USRP/USERSPACE/LIB/usrp_lib.cpp

@@ -69,7 +69,7 @@
 /** @addtogroup _USRP_PHY_RF_INTERFACE_
  * @{
  */
-
+int gpio789=0;
 extern int usrp_tx_thread;
 
 
@@ -708,6 +708,12 @@ static int trx_usrp_read(openair0_device *device, openair0_timestamp *ptimestamp
   s->rx_timestamp = s->rx_md.time_spec.to_ticks(s->sample_rate);
   *ptimestamp = s->rx_timestamp;
 
+  // push GPIO bits 7-9 from flags_msb
+   s->usrp->set_command_time(uhd::time_spec_t::from_ticks((s->rx_timestamp+(2*nsamps)),s->sample_rate));
+   s->usrp->set_gpio_attr("FP0", "OUT", gpio789<<7, 0x380);
+   s->usrp->clear_command_time();
+   gpio789 = (gpio789+1)&7;
+
   if (device->recplay_state != NULL) { // record mode
     // Copy subframes to memory (later dump on a file)
     if (device->recplay_state->nb_samples < device->openair0_cfg->recplay_conf->u_sf_max) {