Hi,
These are the inputs given by us for configuring AD9361.
{1024000000, 64000000, 32000000, 16000000, 8000000, 4000000},// rx_path_clock_frequencies[6] *** adi,rx-path-clock-frequencies
{1024000000, 64000000, 32000000, 16000000, 8000000, 4000000},// tx_path_clock_frequencies[6] *** adi,tx-path-clock-frequencies
AD9361_TXFIRConfig tx_fir_config = { // BPF PASSBAND 3/20 fs to 1/4 fs 1, // tx -6, tx_gain 2 ,//tx_int{1,-6,-28,-62,-80,-56,11,68,54,-29,-98,-61,64,142,59,-122,-195,-35,210,246,-26,-329,-280,141,476,273,-326,-636,-193,595,786,3,-957,-889,351,1424,890,-953,-2027,-696,1997,2886,76,-4178,-4612,2199,13771,22755,22755,13771,2199,-4612,-4178,76,2886,1997,-696,-2027,-953,890,1424,351,-889,-957,3,786,595,-193,-636,-326,273,476,141,-280,-329,-26,246,210,-35,-195,-122,59,142,64,-61,-98,-29,54,68,11,-56,-80,-62,-28,-6,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}, 128, // tx_coef_size {1024000000, 64000000, 32000000, 16000000, 8000000, 4000000}, //{0, 0, 0, 0, 0, 0}, // tx_path_clks[6] 1330000 // tx_bandwidth};
but we are getting error ad9361_calculate_rf_clock_chain: requested rate 4000000 TXFIR int 0 RXFIR dec 0 mode Highest OSRad9361_calculate_rf_clock_chain: Failed to find suitable dividers: ADC clock below limit".
please give the feedback how to solve thiis error.
Moving to FPGA subspace. Someone here will be able to verify the changes done.
Please use the filter wizard tool to create a custom profile.
Please refer to bellow posts,
https://ez.analog.com/linux-device-drivers/microcontroller-no-os-drivers/f/q-a/88114/ad9361_dig_tune-tuning-failed-when-using-no-os-drivers
https://ez.analog.com/linux-device-drivers/microcontroller-no-os-drivers/f/q-a/88110/fir-structure-parameter-initialization-error
we used this function in main.c ad9361_trx_load_enable_fir(ad9361_phy, rx_fir_config, tx_fir_config)" ,and still we got same error "ad9361_calculate_rf_clock_chain: Failed to find suitable dividers: ADC clock below limit.
Filter = 2 Phase Equalization = 0 Use AD936x FIR = 1 Fpass = 1.333300e+00 Fstop = 1.666700e+00 Apass = 5.000000e-01 Astop = 80 Param = 0.000000 PLL rate = 1024 Converter = 64 Data rate = 4
Please find the attached document with filter parameters for both transmit and receive .
This is the settings provided in AD9361_Filter_Wizard GUI
One of the observation which I made now is
While setting FIR filter parameters I'm using the function of ad9361_set_tx_fir_config(ad9361_phy, tx_fir_config);. That time I'm setting tx_int as 2. But While reading back using fn2=ad9361_get_tx_fir_config( phy1, tx_ch, t1); I'm getting interpolation as 0. What might be the possible reasons for that? Why assigned value is not reflecting ?
How can I verify the other parameters which I used to initialize AD9361 has reflected or not?
# Generated with AD9361 Filter Design Wizard 16.1.3 # MATLAB 9.0.0.341360 (R2016a), 23-Sep-2019 11:41:42 # Inputs: # Data Sample Frequency = 4000000 Hz TX 3 GAIN 0 INT 2 RX 3 GAIN -6 DEC 2 RTX 1024000000 64000000 32000000 16000000 8000000 4000000 RRX 1024000000 64000000 32000000 16000000 8000000 4000000 BWTX 3362055 BWRX 3362068 0,-18 -1,-14 -4,21 -8,119 -10,206 -5,199 5,50 12,-130 6,-170 -10,1 -19,213 -6,211 19,-61 28,-324 2,-240 -35,174 -37,467 8,232 57,-359 45,-628 -30,-153 -86,631 -44,784 66,-40 118,-1006 28,-897 -120,404 -146,1498 12,909 191,-1031 160,-2144 -85,-725 -273,2124 -145,3074 197,118 353,-4401 83,-4971 -348,2029 -412,14037 44,23383 531,23383 423,14037 -253,2029 -730,-4971 -353,-4401 555,118 918,3074 159,2124 -958,-725 -1052,-2144 211,-1031 1472,909 1078,1498 -840,404 -2125,-897 -900,-1006 1920,-40 3034,784 290,631 -4144,-153 -4814,-628 1970,-359 13765,232 22989,467 22989,174 13765,-240 1970,-324 -4814,-61 -4144,211 290,213 3034,1 1920,-170 -900,-130 -2125,50 -840,199 1078,206 1472,119 211,21 -1052,-14 -958,-18 159,0 918,0 555,0 -353,0 -730,0 -253,0 423,0 531,0 44,0 -412,0 -348,0 83,0 353,0 197,0 -145,0 -273,0 -85,0 160,0 191,0 12,0 -146,0 -120,0 28,0 118,0 66,0 -44,0 -86,0 -30,0 45,0 57,0 8,0 -37,0 -35,0 2,0 28,0 19,0 -6,0 -19,0 -10,0 6,0 12,0 5,0 -5,0 -10,0 -8,0 -4,0 -1,0 0,0
Can you try loading the attached filter file and check. It is created with the same settings as yours.
Hi, i used fir coefficients in tx_fir and rx_fir structures in main.c, still i am facing same error as earlier.here iam attaching screenshots for tx_fir , rx_fir structures and error message.
Waiting for suggestions from your side.