diff options
Diffstat (limited to 'usrp2')
| -rw-r--r-- | usrp2/firmware/lib/db_xcvr2450.c | 86 |
1 files changed, 85 insertions, 1 deletions
diff --git a/usrp2/firmware/lib/db_xcvr2450.c b/usrp2/firmware/lib/db_xcvr2450.c index 103eb7629..be3162379 100644 --- a/usrp2/firmware/lib/db_xcvr2450.c +++ b/usrp2/firmware/lib/db_xcvr2450.c @@ -15,6 +15,7 @@ * along with this program. If not, see <http://www.gnu.org/licenses/>. */ +#include <memory_map.h> #include <db_base.h> #include <stdio.h> #include <spi.h> @@ -237,11 +238,91 @@ xcvr2450_init(struct db_base *dbb){ return true; } +/************************************************** + * Set the freq + **************************************************/ bool -xcvr2450_set_freq(struct db_base *db, u2_fxpt_freq_t freq, u2_fxpt_freq_t *dc){ +xcvr2450_set_freq(struct db_base *dbb, u2_fxpt_freq_t freq, u2_fxpt_freq_t *dc){ + struct db_xcvr2450_dummy *db = (struct db_xcvr2450_dummy *) dbb; + //ensure gain in within range + if(!(freq >= db->base.freq_min && freq <= db->base.freq_max)) { + return false; + } + + + u2_fxpt_freq_t vco_freq; + + if(freq > U2_DOUBLE_TO_FXPT_FREQ(3e9)) { + db->common.d_five_gig = 1; + db->common.d_ref_div = 1; + db->common.d_ad9515_div = 3; + //scaler = U2_DOUBLE_TO_FXPT_FREQ(4.0/5.0); + vco_freq = (4*freq)/5; + } + else { + db->common.d_five_gig = 0; + db->common.d_ref_div = 1; + db->common.d_ad9515_div = 3; + //scaler = U2_DOUBLE_TO_FXPT_FREQ(4.0/3.0); + vco_freq = (4*freq)/3; + } + + if(freq > U2_DOUBLE_TO_FXPT_FREQ(5.27e9)) { + db->common.d_highband = 1; + } + else { + db->common.d_highband = 0; + } + + //double vco_freq = target_freq*scaler; + //double sys_clk = usrp()->fpga_master_clock_freq(); // Usually 64e6 + u2_fxpt_freq_t ref_clk = U2_DOUBLE_TO_FXPT_FREQ(MASTER_CLK_RATE)/db->common.d_ad9515_div; + u2_fxpt_freq_t phdet_freq = ref_clk/db->common.d_ref_div; + + //double div = vco_freq/phdet_freq; + // d_int_div = int(floor(div)); + // d_frac_div = int((div-d_int_div)*65536.0); + // double actual_freq = phdet_freq*(d_int_div+(d_frac_div/65536.0))/scaler; + db->common.d_int_div = vco_freq/phdet_freq; + *dc = db->common.d_int_div*phdet_freq*freq/vco_freq; + + + printf("RF=%d VCO=%d RefDiv=%d Phdet=%d Div=%d ActualRF=%d\n", + u2_fxpt_freq_round_to_int(freq), u2_fxpt_freq_round_to_int(vco_freq), + db->common.d_ref_div, u2_fxpt_freq_round_to_int(phdet_freq), + db->common.d_int_div, u2_fxpt_freq_round_to_int(*dc)); +/* + set_gpio(); + set_reg_int_divider(); + set_reg_frac_divider(); + set_reg_bandselpll(); + + args.ok = lock_detect(); + args.baseband_freq = actual_freq; + + if(args.ok) { + if((target_freq > 5.275e9) && (target_freq <= 5.35e9)) { + d_highband = 0; + set_reg_bandselpll(); + args.ok = lock_detect(); + //printf("swap to 0 at %f, ok %d\n", target_freq, args.ok); + } + if((target_freq >= 5.25e9) && (target_freq <= 5.275e9)) { + d_highband = 1; + set_reg_bandselpll(); + args.ok = lock_detect(); + //printf("swap to 1 at %f, ok %d\n", target_freq, args.ok); + } + if(!args.ok){ + //printf("Fail %f\n", target_freq); + } + }*/ return true; } +/************************************************** + * Set RX Gain + **************************************************/ bool xcvr2450_set_gain_rx(struct db_base *dbb, u2_fxpt_gain_t gain){ struct db_xcvr2450_dummy *db = (struct db_xcvr2450_dummy *) dbb; @@ -268,6 +349,9 @@ xcvr2450_set_gain_rx(struct db_base *dbb, u2_fxpt_gain_t gain){ return true; } +/************************************************** + * Set TX Gain + **************************************************/ bool xcvr2450_set_gain_tx(struct db_base *dbb, u2_fxpt_gain_t gain){ struct db_xcvr2450_dummy *db = (struct db_xcvr2450_dummy *) dbb; |