OctoClock firmware upgrade, added host driver

* OctoClock can communicate with UHD over Ethernet
* Can read NMEA strings from GPSDO and send to host
* Added multi_usrp_clock class for clock devices
* uhd::device can now filter to return only USRP devices or clock devices
* New OctoClock bootloader can accept firmware download over Ethernet
* Added octoclock_burn_eeprom,octoclock_firmware_burner utilities
* Added test_clock_synch example to show clock API

1 files changed, 57 insertions, 0 deletions

diff --git a/host/lib/usrp_clock/octoclock/octoclock_uart.hpp b/host/lib/usrp_clock/octoclock/octoclock_uart.hpp
new file mode 100644
index 000000000..05d1bb121
--- /dev/null
+++ b/host/lib/usrp_clock/octoclock/octoclock_uart.hpp
@@ -0,0 +1,57 @@
+//
+// Copyright 2014 Ettus Research LLC
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the uart_ifaceied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+//
+
+#ifndef INCLUDED_OCTOCLOCK_UART_HPP
+#define INCLUDED_OCTOCLOCK_UART_HPP
+
+#include <vector>
+
+#include <uhd/transport/udp_simple.hpp>
+#include <uhd/types/serial.hpp>
+
+/*!
+ * The OctoClock doesn't take UART input per se but reads a specific
+ * packet type and sends the string from there through its own serial
+ * functions.
+ */
+namespace uhd{
+class octoclock_uart_iface : public uhd::uart_iface{
+public:
+    octoclock_uart_iface(uhd::transport::udp_simple::sptr udp);
+    ~octoclock_uart_iface(void) {};
+
+    void write_uart(const std::string &buf);
+    std::string read_uart(double timeout);
+
+private:
+    uhd::transport::udp_simple::sptr _udp;
+
+    boost::uint16_t _poolsize;
+    gpsdo_cache_state_t _state;
+    gpsdo_cache_state_t _device_state;
+    std::vector<boost::uint8_t> _cache;
+    std::string _rxbuff;
+
+    void _update_cache();
+    char _getchar();
+};
+
+uart_iface::sptr octoclock_make_uart_iface(uhd::transport::udp_simple::sptr udp);
+
+}
+
+#endif /* INCLUDED_OCTOCLOCK_UART_HPP */