From 42ffe104345eacc362adfa2745eeb9441ee779b0 Mon Sep 17 00:00:00 2001 From: Jon Kraft Date: Tue, 11 Jul 2023 15:31:03 -0600 Subject: [PATCH] Delete beamsteer.py --- beamsteer.py | 248 --------------------------------------------------- 1 file changed, 248 deletions(-) delete mode 100644 beamsteer.py diff --git a/beamsteer.py b/beamsteer.py deleted file mode 100644 index 21955a6..0000000 --- a/beamsteer.py +++ /dev/null @@ -1,248 +0,0 @@ -#!/usr/bin/env python3 -# Must use Python 3 -# Copyright (C) 2022 Analog Devices, Inc. -# -# All rights reserved. -# -# Redistribution and use in source and binary forms, with or without modification, -# are permitted provided that the following conditions are met: -# - Redistributions of source code must retain the above copyright -# notice, this list of conditions and the following disclaimer. -# - Redistributions in binary form must reproduce the above copyright -# notice, this list of conditions and the following disclaimer in -# the documentation and/or other materials provided with the -# distribution. -# - Neither the name of Analog Devices, Inc. nor the names of its -# contributors may be used to endorse or promote products derived -# from this software without specific prior written permission. -# - The use of this software may or may not infringe the patent rights -# of one or more patent holders. This license does not release you -# from the requirement that you obtain separate licenses from these -# patent holders to use this software. -# - Use of the software either in source or binary form, must be run -# on or directly connected to an Analog Devices Inc. component. -# -# THIS SOFTWARE IS PROVIDED BY ANALOG DEVICES "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, -# INCLUDING, BUT NOT LIMITED TO, NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A -# PARTICULAR PURPOSE ARE DISCLAIMED. -# -# IN NO EVENT SHALL ANALOG DEVICES BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, -# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, INTELLECTUAL PROPERTY -# RIGHTS, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR -# BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, -# STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF -# THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - -''' Simple Beamforming Example Using Phaser and Python''' - -# ============================================================================= -# Import statements -# ============================================================================= -import adi -import ADAR_pyadi_functions as ADAR # import the ADAR1000 functions -import SDR_functions as SDR # import the Pluto SDR functions - -import sys -import pickle -import matplotlib.pyplot as plt -import numpy as np - - - -# ============================================================================= -# User parameters -# ============================================================================= - -rpi_ip = "ip:phaser.local" # default IP address of Phaser's Raspberry Pi -sdr_ip = "ip:192.168.2.1" # default Pluto IP address - -# select which signal source to use -# HB100 (external source) -# OUT1 (transmit freq is set in config.py) -# OUT2 (transmit freq is set in config.py) -SignalSource = 'HB100' # 'HB100', 'OUT1', or 'OUT2' - -# config.py has all the key parameters that you might want to modify -try: - import config as config -except: - print("Make sure config.py is in this directory") - sys.exit(0) - - -# ============================================================================= -# Variables setup -# ============================================================================= - -# if using HB100, load the signal frequency from "phaser_find_hb100.py" output file -if SignalSource == 'HB100': - try: - with open("hb100_freq_val.pkl", "rb") as file1: - config.SignalFreq = pickle.load(file1) - print("Found signal freq file, ", config.SignalFreq/1e9, " GHz") - except: - print("No signal freq found, keeping at ", config.SignalFreq/1e9, " GHz") - -"""SET DEFAULT VALUES""" -sdr_address = sdr_ip -SignalFreq = config.SignalFreq -Tx_freq = config.Tx_freq # Pluto's Tx LO freq. -Rx_freq = config.Rx_freq # Pluto's Rx LO freq -LO_freq = SignalFreq + Rx_freq # freq of the LTC5548 mixer LO -SampleRate = config.SampleRate -Rx_gain = config.Rx_gain -Tx_gain = config.Tx_gain -RxGain1 = 100 -RxGain2 = 100 -RxGain3 = 100 -RxGain4 = 100 -RxGain5 = 100 -RxGain6 = 100 -RxGain7 = 100 -RxGain8 = 100 -RxPhase1 = config.Rx1_cal -RxPhase2 = config.Rx2_cal -RxPhase3 = config.Rx3_cal -RxPhase4 = config.Rx4_cal -RxPhase5 = config.Rx5_cal -RxPhase6 = config.Rx6_cal -RxPhase7 = config.Rx7_cal -RxPhase8 = config.Rx8_cal -phase_step_size = 2.8125 -c = 299792458 # speed of light in m/s -d = config.d # antenna spacing for phaser is 14mm -gainList = [RxGain1, RxGain2, RxGain3, RxGain4, - RxGain5, RxGain6, RxGain7, RxGain8] -phaseList = [RxPhase1, RxPhase2, RxPhase3, RxPhase4, - RxPhase5, RxPhase6, RxPhase7, RxPhase8] - - -# ============================================================================= -# Hardware setup -# ============================================================================= - -# Use the onboard VCO to generate the LO? Or apply source to EXT_LO? -gpios = adi.one_bit_adc_dac(rpi_ip) -gpios.gpio_vctrl_1 = 1 # 1=Use onboard PLL/LO source (0=use external LO input) -gpios.gpio_vctrl_2 = 1 # 1=Send LO to transmit circuitry (0=disable Tx path and send LO to LO_OUT) - -# setup GPIOs to control if Tx is output on OUT1 or OUT2 -gpios.gpio_div_mr = 1 -gpios.gpio_div_s0 = 0 -gpios.gpio_div_s1 = 0 -gpios.gpio_div_s2 = 0 - -# Initialize Pluto -sdr = SDR.SDR_init( - sdr_address, - SampleRate, - Tx_freq, - Rx_freq, - Rx_gain, - Tx_gain, - config.buffer_size, - ) -SDR.SDR_LO_init(rpi_ip, LO_freq) # Set Phaser's ADF4159 to the LO_freq - -# Intialize the ADAR1000 receive array -rx_array = adi.adar1000_array( - uri=rpi_ip, - chip_ids=["BEAM0", "BEAM1"], # these are the ADAR1000s' labels in the device tree - device_map=[[1], [2]], - element_map=[[1, 2, 3, 4, 5, 6, 7, 8]], - device_element_map={ - 1: [7, 8, 5, 6], # i.e. channel2 of device1 (BEAM0), maps to element 8 - 2: [3, 4, 1, 2], - }, - ) -for device in rx_array.devices.values(): - ADAR.ADAR_init(device) # resets the ADAR1000 - ADAR.ADAR_set_mode(device, "rx") # ADAR1000s on Phaser are receive only, so mode is always "rx" -ADAR.ADAR_set_Taper( - rx_array, - gainList - ) - -# Set transmitter to either OUT1 or OUT2 SMA port. Or disable if using HB100 -if SignalSource == 'OUT1': # use Phaser's OUT1 SMA port as the transmitter - gpios.gpio_tx_sw = 1 # 0=OUT2, 1=OUT1 - gpios.gpio_vctrl_2 = 1 # 1=Send LO to transmit circuitry -elif SignalSource == 'OUT2': # use OUT2 as the transmitter - gpios.gpio_tx_sw = 0 # 0=OUT2, 1=OUT1 - gpios.gpio_vctrl_2 = 1 # 1=Send LO to transmit circuitry -else: # use HB100 as the transmit signal source - gpios.gpio_tx_sw = 0 - SDR.SDR_setTx(sdr, -80) # disable tx output by attenuating it - - -# ============================================================================= -# Define Common Functions -# ============================================================================= -def ConvertPhaseToSteerAngle(PhDelta): - # steering angle theta = arcsin(c*deltaphase/(2*pi*f*d) - value1 = (c * np.radians(np.abs(PhDelta))) / ( - 2 * 3.14159 * (SignalFreq) * d) - clamped_value1 = max(min(1, value1), -1) # arcsin argument must be between 1 and -1 - theta = np.degrees(np.arcsin(clamped_value1)) - if PhDelta >= 0: - SteerAngle = theta # positive PhaseDelta covers 0deg to 90 deg - else: - SteerAngle = -theta # negative phase delta covers 0 deg to -90 deg - return SteerAngle - -def dbfs(raw_data): - # function to convert IQ samples to FFT plot, scaled in dBFS - NumSamples = len(raw_data) - win = np.hamming(NumSamples) - y = raw_data * win - s_fft = np.fft.fft(y) / np.sum(win) - s_shift = np.fft.fftshift(s_fft) - s_dbfs = 20*np.log10(np.abs(s_shift)/(2**11)) # Pluto is a signed 12 bit ADC, so use 2^11 to convert to dBFS - return s_dbfs - - -# ============================================================================================= -# Loop through all the steering angles and record the peak FFT amplitude at each steering angle -# ============================================================================================= -angles = [] # stores the list of steering angles -peak_gains = [] # stores the peak FFT gain received for each steering angle - -steering_step = 1 # steering angle step size (in degrees) -SteerValues = np.arange(-90, 90 + steering_step, steering_step) -# Phase delta = 2*Pi*d*sin(theta)/lambda = 2*Pi*d*sin(theta)*f/c -PhaseValues = np.degrees( - 2*np.pi*d* np.sin(np.radians(SteerValues)) - * SignalFreq / c -) - -for PhDelta in PhaseValues: - ADAR.ADAR_set_Phase( - rx_array, - PhDelta, - phase_step_size, - phaseList - ) - - data = sdr.rx() - data_sum = data[0]+data[1] - sum_dbfs = dbfs(data_sum) - peak_dbfs = max(sum_dbfs) - angles.append(ConvertPhaseToSteerAngle(PhDelta)) - peak_gains.append(peak_dbfs) - - -# ============================================================================= -# Plotting results -# ============================================================================= - -plt.figure(1) -plt.subplot(2, 1, 1) -plt.title("Beam sweep plot") -plt.plot(angles, peak_gains, marker="o", ms=2) -plt.xlabel("Steering angle (deg)") -plt.ylabel("Peak Amplitude (dBFS)") -plt.tight_layout() -plt.show() - - -