Hi,
I am using fmcomms2 with xilinx nexys video fpga board to test 2.4G trx. I integrate an soc in the FPGA board as a BBP to communicate with FMCOMMS2 through FMC IOs.
I want to test the rf tx path with TDD mode. The initial parameter of the AD9361 is as follows:
/* Device selection */ ID_AD9361, // dev_sel
/* Identification number */
0, //id_no
/* Reference Clock */
40000000UL, //reference_clk_rate
/* Base Configuration */
1, //two_rx_two_tx_mode_enable *** adi,2rx-2tx-mode-enable
1, //one_rx_one_tx_mode_use_rx_num *** adi,1rx-1tx-mode-use-rx-num
1, //one_rx_one_tx_mode_use_tx_num *** adi,1rx-1tx-mode-use-tx-num
0,//kangliang change to TDD///1, //frequency_division_duplex_mode_enable *** adi,frequency-division-duplex-mode-enable
0, //frequency_division_duplex_independent_mode_enable *** adi,frequency-division-duplex-independent-mode-enable
0, //tdd_use_dual_synth_mode_enable *** adi,tdd-use-dual-synth-mode-enable
0, //tdd_skip_vco_cal_enable *** adi,tdd-skip-vco-cal-enable
0, //tx_fastlock_delay_ns *** adi,tx-fastlock-delay-ns
0, //rx_fastlock_delay_ns *** adi,rx-fastlock-delay-ns
0, //rx_fastlock_pincontrol_enable *** adi,rx-fastlock-pincontrol-enable
0, //tx_fastlock_pincontrol_enable *** adi,tx-fastlock-pincontrol-enable
0, //external_rx_lo_enable *** adi,external-rx-lo-enable
0, //external_tx_lo_enable *** adi,external-tx-lo-enable
5, //dc_offset_tracking_update_event_mask *** adi,dc-offset-tracking-update-event-mask
6, //dc_offset_attenuation_high_range *** adi,dc-offset-attenuation-high-range
5, //dc_offset_attenuation_low_range *** adi,dc-offset-attenuation-low-range
0x28, //dc_offset_count_high_range *** adi,dc-offset-count-high-range
0x32, //dc_offset_count_low_range *** adi,dc-offset-count-low-range
0, //split_gain_table_mode_enable *** adi,split-gain-table-mode-enable
MAX_SYNTH_FREF, //trx_synthesizer_target_fref_overwrite_hz *** adi,trx-synthesizer-target-fref-overwrite-hz
0, // qec_tracking_slow_mode_enable *** adi,qec-tracking-slow-mode-enable
/* ENSM Control */
0, //ensm_enable_pin_pulse_mode_enable *** adi,ensm-enable-pin-pulse-mode-enable
0, //ensm_enable_txnrx_control_enable *** adi,ensm-enable-txnrx-control-enable
/* LO Control */
2400000000UL, //rx_synthesizer_frequency_hz *** adi,rx-synthesizer-frequency-hz
2400000000UL, //tx_synthesizer_frequency_hz *** adi,tx-synthesizer-frequency-hz
1, //tx_lo_powerdown_managed_enable *** adi,tx-lo-powerdown-managed-enable
/* Rate & BW Control */
{983040000, 245760000, 122880000, 61440000, 30720000, 30720000},// rx_path_clock_frequencies[6] *** adi,rx-path-clock-frequencies
{983040000, 122880000, 122880000, 61440000, 30720000, 30720000},// tx_path_clock_frequencies[6] *** adi,tx-path-clock-frequencies
18000000,//rf_rx_bandwidth_hz *** adi,rf-rx-bandwidth-hz
18000000,//rf_tx_bandwidth_hz *** adi,rf-tx-bandwidth-hz
/* RF Port Control */
0, //rx_rf_port_input_select *** adi,rx-rf-port-input-select
0, //tx_rf_port_input_select *** adi,tx-rf-port-input-select
/* TX Attenuation Control */
10000, //tx_attenuation_mdB *** adi,tx-attenuation-mdB
0, //update_tx_gain_in_alert_enable *** adi,update-tx-gain-in-alert-enable
/* Reference Clock Control */
0, //xo_disable_use_ext_refclk_enable *** adi,xo-disable-use-ext-refclk-enable
{8, 5920}, //dcxo_coarse_and_fine_tune[2] *** adi,dcxo-coarse-and-fine-tune
CLKOUT_DISABLE, //clk_output_mode_select *** adi,clk-output-mode-select
Compare to the no-OS github master version, I have only changed the FDD mode to TDD mode.
Then I set the rf to tx mode by executing the following functions:
ad9361_init(&ad9361_phy, &default_init_param);
ad9361_set_tx_fir_config(ad9361_phy, tx_fir_config);
ad9361_set_rx_fir_config(ad9361_phy, rx_fir_config);
int ret = ad9361_set_en_state_machine_mode(ad9361_phy,ENSM_MODE_TX);
Note that I only put the RF to tx mode, but no data was sent to DAC.
I suppose to observe the carrier at 2.4G, but unfortunatly, nothing was appeared in the spectrum analyzer。What I am sure is that the registers was successfully configured since ENSM state was in TX state when I read back the 0x017 (SPI state register)
Is there any suggestions?
Best regards
