X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=usrp2%2Ffirmware%2Flib%2Fdb_tvrx.c;fp=usrp2%2Ffirmware%2Flib%2Fdb_tvrx.c;h=062d7189500859de136a85ef825eba81c1bec998;hb=e0fcbaee124d3e8c4c11bdda662f88e082352058;hp=0000000000000000000000000000000000000000;hpb=c86f6c23c6883f73d953d64c28ab42cedb77e4d7;p=debian%2Fgnuradio
diff --git a/usrp2/firmware/lib/db_tvrx.c b/usrp2/firmware/lib/db_tvrx.c
new file mode 100644
index 00000000..062d7189
--- /dev/null
+++ b/usrp2/firmware/lib/db_tvrx.c
@@ -0,0 +1,240 @@
+/* -*- 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 .
+ */
+
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+
+bool tvrx_init(struct db_base *db);
+bool tvrx_set_freq(struct db_base *db, u2_fxpt_freq_t freq, u2_fxpt_freq_t *dc);
+bool tvrx_set_gain(struct db_base *db, u2_fxpt_gain_t gain);
+
+#define I2C_ADDR 0x60
+#define ref_freq (U2_DOUBLE_TO_FXPT_FREQ(4e6)/640*8)
+
+#define ref_div 640 /* choices are 640, 512, 1024 */
+
+#if (ref_div == 640)
+#define ref_div_byte 0
+#else
+#if (ref_div == 512)
+#define ref_div_byte 0x6
+#else
+#define ref_div_byte 0x2
+#endif
+#endif
+
+#define fast_tuning 0x40
+
+#define control_byte_1 (0x88|fast_tuning|ref_div_byte)
+
+
+struct db_tvrx_common {
+ // TVRX common stuff
+ u2_fxpt_freq_t first_if;
+ u2_fxpt_freq_t second_if;
+};
+
+struct db_tvrx_dummy {
+ struct db_base base;
+ struct db_tvrx_common common;
+};
+
+struct db_tvrx1 {
+ struct db_base base;
+ struct db_tvrx_common common;
+};
+
+struct db_tvrx2 {
+ struct db_base base;
+ struct db_tvrx_common common;
+};
+
+struct db_tvrx3 {
+ struct db_base base;
+ struct db_tvrx_common common;
+};
+
+/* The class instances */
+struct db_tvrx1 db_tvrx1 = {
+ .base.dbid = 0x0003,
+ .base.is_tx = false,
+ .base.output_enables = 0x0000,
+ .base.used_pins = 0x0000,
+ .base.freq_min = U2_DOUBLE_TO_FXPT_FREQ(50e6),
+ .base.freq_max = U2_DOUBLE_TO_FXPT_FREQ(860e6),
+ //.base.gain_min = U2_DOUBLE_TO_FXPT_GAIN(xxx),
+ //.base.gain_max = U2_DOUBLE_TO_FXPT_GAIN(xxx),
+ //.base.gain_step_size = U2_DOUBLE_TO_FXPT_GAIN(xxx),
+ .base.is_quadrature = false,
+ .base.i_and_q_swapped = false,
+ .base.spectrum_inverted = false,
+ //.base.lo_offset = U2_DOUBLE_TO_FXPT_FREQ(4e6),
+ .base.init = tvrx_init,
+ .base.set_freq = tvrx_set_freq,
+ .base.set_gain = tvrx_set_gain,
+ .base.set_tx_enable = 0,
+ .base.atr_mask = 0x0000,
+ .base.atr_txval = 0,
+ .base.atr_rxval = 0,
+ // .base.atr_tx_delay =
+ // .base.atr_rx_delay =
+ .common.first_if = U2_DOUBLE_TO_FXPT_FREQ(43.75e6),
+ .common.second_if = U2_DOUBLE_TO_FXPT_FREQ(5.75e6),
+};
+
+struct db_tvrx2 db_tvrx2 = {
+ .base.dbid = 0x000c,
+ .base.is_tx = false,
+ .base.output_enables = 0x0000,
+ .base.used_pins = 0x0000,
+ .base.freq_min = U2_DOUBLE_TO_FXPT_FREQ(50e6),
+ .base.freq_max = U2_DOUBLE_TO_FXPT_FREQ(860e6),
+ //.base.gain_min = U2_DOUBLE_TO_FXPT_GAIN(xxx),
+ //.base.gain_max = U2_DOUBLE_TO_FXPT_GAIN(xxx),
+ //.base.gain_step_size = U2_DOUBLE_TO_FXPT_GAIN(xxx),
+ .base.is_quadrature = false,
+ .base.i_and_q_swapped = false,
+ .base.spectrum_inverted = false,
+ //.base.lo_offset = U2_DOUBLE_TO_FXPT_FREQ(4e6),
+ .base.init = tvrx_init,
+ .base.set_freq = tvrx_set_freq,
+ .base.set_gain = tvrx_set_gain,
+ .base.set_tx_enable = 0,
+ .base.atr_mask = 0x0000,
+ .base.atr_txval = 0,
+ .base.atr_rxval = 0,
+ // .base.atr_tx_delay =
+ // .base.atr_rx_delay =
+ .common.first_if = U2_DOUBLE_TO_FXPT_FREQ(44e6),
+ .common.second_if = U2_DOUBLE_TO_FXPT_FREQ(44e6),
+};
+
+struct db_tvrx3 db_tvrx3 = {
+ .base.dbid = 0x0040,
+ .base.is_tx = false,
+ .base.output_enables = 0x0000,
+ .base.used_pins = 0x0000,
+ .base.freq_min = U2_DOUBLE_TO_FXPT_FREQ(50e6),
+ .base.freq_max = U2_DOUBLE_TO_FXPT_FREQ(860e6),
+ //.base.gain_min = U2_DOUBLE_TO_FXPT_GAIN(xxx),
+ //.base.gain_max = U2_DOUBLE_TO_FXPT_GAIN(xxx),
+ //.base.gain_step_size = U2_DOUBLE_TO_FXPT_GAIN(xxx),
+ .base.is_quadrature = false,
+ .base.i_and_q_swapped = false,
+ .base.spectrum_inverted = false,
+ //.base.lo_offset = U2_DOUBLE_TO_FXPT_FREQ(4e6),
+ .base.init = tvrx_init,
+ .base.set_freq = tvrx_set_freq,
+ .base.set_gain = tvrx_set_gain,
+ .base.set_tx_enable = 0,
+ .base.atr_mask = 0x0000,
+ .base.atr_txval = 0,
+ .base.atr_rxval = 0,
+ // .base.atr_tx_delay =
+ // .base.atr_rx_delay =
+ .common.first_if = U2_DOUBLE_TO_FXPT_FREQ(44e6),
+ .common.second_if = U2_DOUBLE_TO_FXPT_FREQ(44e6),
+};
+
+bool
+tvrx_init(struct db_base *dbb)
+{
+ struct db_tvrx_dummy *db = (struct db_tvrx_dummy *) dbb;
+ db->base.set_gain(dbb,U2_DOUBLE_TO_FXPT_GAIN(94.0));
+ return true;
+}
+
+bool
+tvrx_set_freq(struct db_base *dbb, u2_fxpt_freq_t freq, u2_fxpt_freq_t *dc)
+{
+ *dc = 0;
+ if (freq < dbb->freq_min || freq > dbb->freq_max)
+ return false;
+
+ struct db_tvrx_dummy *db = (struct db_tvrx_dummy *) dbb;
+
+ u2_fxpt_freq_t target_lo_freq = freq + db->common.first_if;
+ int N_DIV = u2_fxpt_freq_round_to_int(((1LL<<20) * target_lo_freq)/ref_freq);
+
+ u2_fxpt_freq_t actual_lo_freq = ref_freq * N_DIV;
+ u2_fxpt_freq_t actual_freq = actual_lo_freq - db->common.first_if;
+ if(N_DIV > 32767)
+ return false;
+
+ printf("N_DIV = %d, actual_freq = %d, actual_lo_freq = %d\n",
+ N_DIV, u2_fxpt_freq_round_to_int(actual_freq),u2_fxpt_freq_round_to_int(actual_freq));
+
+ char buf[4];
+ buf[0] = (N_DIV>>8) & 0xff;
+ buf[1] = N_DIV & 0xff;
+ buf[2] = control_byte_1;
+ buf[3] = (freq < U2_DOUBLE_TO_FXPT_FREQ(158e6)) ? 0xa8 : // VHF LOW
+ (freq < U2_DOUBLE_TO_FXPT_FREQ(464e6)) ? 0x98 : // VHF HIGH
+ 0x38; // UHF
+
+ *dc = actual_freq - db->common.second_if;
+ return i2c_write(I2C_ADDR,buf,4);
+}
+
+bool
+tvrx_set_gain(struct db_base *dbb, u2_fxpt_gain_t gain)
+{
+ struct db_tvrx_dummy *db = (struct db_tvrx_dummy *) dbb;
+ int rfgain;
+ int ifgain;
+ if(gain>U2_DOUBLE_TO_FXPT_GAIN(95.0))
+ return false;
+ if(gain<0)
+ return false;
+
+ if(gain>U2_DOUBLE_TO_FXPT_GAIN(60.0)) {
+ rfgain = U2_DOUBLE_TO_FXPT_GAIN(60.0);
+ ifgain = gain-U2_DOUBLE_TO_FXPT_GAIN(60.0);
+ } else {
+ rfgain = gain;
+ ifgain = 0;
+ }
+
+ int rf_slope_q8 = 256 * 4096 * 2.5 / 60.0 / 1.22 / 3.3;
+ int rf_offset_q8 = 128 * 256 * 4096 * 1.25 / 1.22 / 3.3;
+ int if_slope_q8 = 256 * 4096 * 2.25 / 35.0 / 1.22 / 3.3;
+ int if_offset_q8 = 128 * 256 * 4096 * 1.4 / 1.22 / 3.3;
+
+
+ int rfdac = (rfgain*rf_slope_q8 + rf_offset_q8)>>15;
+ int ifdac = (ifgain*if_slope_q8 + if_offset_q8)>>15;
+ lsdac_write_rx(0,rfdac);
+ lsdac_write_rx(1,ifdac);
+
+ printf("Setting gain %d, rf %d, if %d\n",gain,rfdac,ifdac);
+ return true;
+}
+
+
+bool
+tvrx_lock_detect(struct db_base *dbb)
+{
+ struct db_tvrx_dummy *db = (struct db_tvrx_dummy *) dbb;
+ return true;
+}