diff options
Diffstat (limited to 'host/lib/usrp')
| -rw-r--r-- | host/lib/usrp/e100/io_impl.cpp | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/host/lib/usrp/e100/io_impl.cpp b/host/lib/usrp/e100/io_impl.cpp index 52da8b2cd..519d163a0 100644 --- a/host/lib/usrp/e100/io_impl.cpp +++ b/host/lib/usrp/e100/io_impl.cpp @@ -46,7 +46,7 @@ using namespace uhd::transport; **********************************************************************/ struct e100_impl::io_impl{ io_impl(zero_copy_if::sptr data_transport, const size_t recv_width): - data_transport(data_transport), async_msg_fifo(100/*messages deep*/) + data_transport(data_transport), async_msg_fifo(100/*messages deep*/), false_alarm(0) { for (size_t i = 0; i < recv_width; i++){ typedef bounded_buffer<managed_recv_buffer::sptr> buffs_queue_type; @@ -65,6 +65,7 @@ struct e100_impl::io_impl{ double tick_rate; //set by update tick rate method e100_ctrl::sptr iface; //so handle irq can peek and poke void handle_irq(void); + size_t false_alarm; std::vector<bounded_buffer<managed_recv_buffer::sptr> *> _buffs_queue; @@ -132,7 +133,13 @@ struct e100_impl::io_impl{ void e100_impl::io_impl::handle_irq(void){ //check the status of the async msg buffer const boost::uint32_t status = iface->peek32(E100_REG_RB_ERR_STATUS); - if ((status & 0x3) == 0) return; //not done or error + if ((status & 0x3) == 0){ //not done or error + //This could be a false-alarm because spi readback is mixed in. + //So we just sleep for a bit rather than interrupt continuously. + if (false_alarm++ > 3) boost::this_thread::sleep(boost::posix_time::milliseconds(1)); + return; + } + false_alarm = 0; //its a real message, reset the count... //std::cout << boost::format("status: 0x%x") % status << std::endl; //load the data struct and call the ioctl |