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, 37 insertions, 0 deletions

diff --git a/firmware/octoclock/include/serial.h b/firmware/octoclock/include/serial.h
new file mode 100644
index 000000000..48a065dc5
--- /dev/null
+++ b/firmware/octoclock/include/serial.h
@@ -0,0 +1,37 @@
+/*
+ * 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 _SERIAL_H_
+#define _SERIAL_H_
+
+#include <stdint.h>
+#include <stdbool.h>
+
+#include <octoclock.h>
+
+#define BAUD_DELAY(baud) ((1.0 / (double)baud) * ((double)F_CPU / 8.0))
+#define BAUD_115200_DELAY BAUD_DELAY(115200)
+
+void serial_init(volatile uint8_t* port, uint8_t index);
+void serial_tx_P(const char* message, volatile uint8_t* port, uint8_t index, bool newline);
+void serial_tx(const char* message, volatile uint8_t* port, uint8_t index, bool newline);
+void serial_tx_byte(uint8_t byte, volatile uint8_t* port, uint8_t index, bool newline);
+void serial_tx_hex(uint8_t byte, volatile uint8_t* port, uint8_t index, bool newline);
+char serial_rx_char(volatile uint8_t* port, uint8_t index);
+char serial_rx_char_nowait(volatile uint8_t* port, uint8_t index);
+
+#endif /* _SERIAL_H_ */