diff options
Diffstat (limited to 'firmware/microblaze/lib/db_tvrx.c')
| -rw-r--r-- | firmware/microblaze/lib/db_tvrx.c | 244 |
1 files changed, 0 insertions, 244 deletions
diff --git a/firmware/microblaze/lib/db_tvrx.c b/firmware/microblaze/lib/db_tvrx.c deleted file mode 100644 index 49bf75883..000000000 --- a/firmware/microblaze/lib/db_tvrx.c +++ /dev/null @@ -1,244 +0,0 @@ -/* -*- c++ -*- */ -/* - * Copyright 2008,2009 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/>. - */ - -#include <i2c.h> -#include <lsdac.h> -#include <memory_map.h> -#include <db_base.h> -#include <hal_io.h> -#include <stdio.h> - -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(0), - .base.gain_max = U2_DOUBLE_TO_FXPT_GAIN(95), - .base.gain_step_size = U2_DOUBLE_TO_FXPT_GAIN(1), - .base.is_quadrature = false, - .base.i_and_q_swapped = false, - .base.spectrum_inverted = false, - .base.default_lo_offset = U2_DOUBLE_TO_FXPT_FREQ(0), - .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), -}; - -#if 0 -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(0), - .base.gain_max = U2_DOUBLE_TO_FXPT_GAIN(95), - .base.gain_step_size = U2_DOUBLE_TO_FXPT_GAIN(1), - .base.is_quadrature = false, - .base.i_and_q_swapped = false, - .base.spectrum_inverted = false, - .base.default_lo_offset = U2_DOUBLE_TO_FXPT_FREQ(0), - .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(56e6), // Fs - 44e6 -}; -#endif - -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(0), - .base.gain_max = U2_DOUBLE_TO_FXPT_GAIN(95), - .base.gain_step_size = U2_DOUBLE_TO_FXPT_GAIN(1), - .base.is_quadrature = false, - .base.i_and_q_swapped = false, - .base.spectrum_inverted = false, - .base.default_lo_offset = U2_DOUBLE_TO_FXPT_FREQ(0), - .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(56e6), // Fs - 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; - - if (0) - 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_lo_freq)); - - unsigned char buf[4]; - buf[0] = (n_div>>8) & 0xff; - buf[1] = n_div & 0xff; - buf[2] = control_byte_1; - buf[3] = ((actual_freq < U2_DOUBLE_TO_FXPT_FREQ(158e6)) ? 0xa8 : // VHF LOW - (actual_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); - - if (0) - 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; -} |