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, 52 insertions, 0 deletions

diff --git a/firmware/octoclock/include/state.h b/firmware/octoclock/include/state.h
new file mode 100644
index 000000000..b11cae397
--- /dev/null
+++ b/firmware/octoclock/include/state.h
@@ -0,0 +1,52 @@
+/*
+ * 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 implied 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 _STATE_H_
+#define _STATE_H_
+
+#include <stdbool.h>
+
+#include <octoclock.h>
+
+// NOT PRESENT unless proven so...
+static ref_t global_which_ref = NO_REF;
+static bool global_gps_present = false;
+static bool global_ext_ref_is_present = false;
+
+volatile uint8_t ext_ref_buf[1024];
+
+void led(LEDs which, int turn_it_on);
+
+void LEDs_off(void);
+
+void force_internal(void);
+
+void prefer_internal(void);
+
+void prefer_external(void);
+
+bool is_ext_ref_present(void);
+
+bool is_gps_present(void);
+
+ref_t which_ref(void);
+
+void check_what_is_present(void);
+
+switch_pos_t get_switch_pos(void);
+
+#endif /* _STATE_H_ */