1 files changed, 94 insertions, 0 deletions
diff --git a/usrp2/firmware/lib/db.h b/usrp2/firmware/lib/db.h
new file mode 100644
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+++ b/usrp2/firmware/lib/db.h
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+/* -*- c++ -*- */
+/*
+ * Copyright 2008 Free Software Foundation, Inc.
+ *
+ * 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/>.
+ */
+
+/*
+ * Interface to daughterboard code
+ */
+
+#ifndef INCLUDED_DB_H
+#define INCLUDED_DB_H
+
+#include <usrp2_types.h>
+
+
+struct db_base;
+
+/* pointers to daughterboard structures */
+extern struct db_base *tx_dboard;
+extern struct db_base *rx_dboard;
+
+
+//! Intermediate tuning information
+
+struct tune_result
+{
+  //! The RF frequency that corresponds to DC in the IF from the daughterboard
+  u2_fxpt_freq_t 	baseband_freq;
+
+  //! The DDC/DUC frequency used to down/up convert to/from the target frequency
+  u2_fxpt_freq_t 	dxc_freq;
+
+  //! Any differerence btwn target and actual (typically < 0.01 Hz)
+  u2_fxpt_freq_t 	residual_freq;
+
+  //! Is the complex baseband spectrum inverted
+  bool			inverted;
+};
+
+
+/*!
+ * \brief One-time init at powerup
+ *
+ *  Sets rx_dboard, tx_dboard and initializes daughterboards.
+ */
+void 
+db_init(void);
+
+/*!
+ * \brief Two stage tuning.  Given target_freq, tune LO and DDC/DUC
+ *
+ * \param[in] db is the daughterboard instance
+ * \param[in] target_freq is the freq to translate the complex baseband to/from.
+ * \param[out] result provides details of the resulting configuration.
+ * 
+ */
+bool
+db_tune(struct db_base *db, u2_fxpt_freq_t target_freq, struct tune_result *result);
+
+
+/*
+ * Set only the DDC frequency
+ */
+bool
+db_set_ddc_freq(u2_fxpt_freq_t dxc_freq, u2_fxpt_freq_t *actual_dxc_freq);
+
+/*
+ * Set only the DUC frequency
+ */
+bool
+db_set_duc_freq(u2_fxpt_freq_t dxc_freq, u2_fxpt_freq_t *actual_dxc_freq);
+
+
+/*!
+ * \brief Set gain
+ */
+bool
+db_set_gain(struct db_base *db, u2_fxpt_gain_t gain);
+ 
+
+#endif /* INCLUDED_DB_H */