diff --git a/targets/ARCH/USRP/USERSPACE/LIB/usrp_lib.cpp b/targets/ARCH/USRP/USERSPACE/LIB/usrp_lib.cpp index 106fb369db1bb6472a66d479d33a79df566998a7..baa4ff1642c37f54327df9f4982fcf2859fad543 100644 --- a/targets/ARCH/USRP/USERSPACE/LIB/usrp_lib.cpp +++ b/targets/ARCH/USRP/USERSPACE/LIB/usrp_lib.cpp @@ -360,7 +360,15 @@ static bool is_equal(double a, double b) return std::fabs(a-b) < std::numeric_limits<double>::epsilon(); } -/*! \brief Set frequencies (TX/RX) +void *freq_thread(void *arg) { + + openair0_device *device=(openair0_device *)arg; + usrp_state_t *s = (usrp_state_t*)device->priv; + + s->usrp->set_tx_freq(device->openair0_cfg[0].tx_freq[0]); + s->usrp->set_rx_freq(device->openair0_cfg[0].rx_freq[0]); +} +/*! \brief Set frequencies (TX/RX). Spawns a thread to handle the frequency change to not block the calling thread * \param device the hardware to use * \param openair0_cfg RF frontend parameters set by application * \param dummy dummy variable not used @@ -369,10 +377,12 @@ static bool is_equal(double a, double b) int trx_usrp_set_freq(openair0_device* device, openair0_config_t *openair0_cfg, int dummy) { usrp_state_t *s = (usrp_state_t*)device->priv; + pthread_t f_thread; printf("Setting USRP TX Freq %f, RX Freq %f\n",openair0_cfg[0].tx_freq[0],openair0_cfg[0].rx_freq[0]); - s->usrp->set_tx_freq(openair0_cfg[0].tx_freq[0]); - s->usrp->set_rx_freq(openair0_cfg[0].rx_freq[0]); + + // spawn a thread to handle the frequency change to not block the calling thread + pthread_create(&f_thread,NULL,freq_thread,(void*)device); return(0);