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first spectrogram working

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This commit is contained in:
Christian Ruiz
2024-09-15 00:54:47 +02:00
parent 9c26ee8a07
commit 446e7c2137
3 changed files with 58 additions and 38 deletions
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SpectrumScan.py
+50 -30
View File
@@ -10,10 +10,14 @@ import matplotlib.pyplot as plt
from datetime import datetime
from argparse import RawTextHelpFormatter
from datetime import datetime
# number of samples in each scanline
SCAN_WIDTH = 4
SCAN_MIN_FREQ = "850"
SCAN_TIME_POINTS = 40
# scanline Serial start/end markers
SCAN_MARK_START = "SCAN "
@@ -115,15 +119,17 @@ def main():
scan_len = 1000
# create the color map and the result array
arr = np.zeros((SCAN_WIDTH, scan_len))
arr = np.zeros((SCAN_WIDTH, scan_len, SCAN_TIME_POINTS))
# scanline counter
row = 0
# list of frequencies in frequency mode
freq_list = []
start = True
time_list = []
start=True
current_time_point=0
# open the COM port
with serial.Serial(args.port, args.speed, timeout=None) as com:
@@ -131,28 +137,29 @@ def main():
# read a single line
try:
line = com.readline().decode("utf-8")
print(line)
#print(line)
except:
continue
if "LOOP:" in line:
continue
if start:
if SCAN_MIN_FREQ not in line:
print("NOT IN LINE")
continue
else:
print("IN LINE")
start = False
start=False
start_time = datetime.now()
# update the progress bar
if not freq_mode:
printProgressBar(row, scan_len)
printProgressBar(current_time_point*scan_len+row, scan_len*SCAN_TIME_POINTS)
if SCAN_MARK_FREQ in line:
new_freq = float(line.split(" ")[1])
if (len(freq_list) > 1) and (new_freq < freq_list[-1]):
break
continue
freq_list.append(new_freq)
print("{:.3f}".format(new_freq), end="\r")
@@ -163,48 +170,61 @@ def main():
# get the values
scanline = line[len(SCAN_MARK_START) : -len(SCAN_MARK_END)].split(",")
for col in range(SCAN_WIDTH):
arr[col][row] = int(scanline[col])
arr[col][row][current_time_point] = int(scanline[col])
# increment the row counter
row = row + 1
# check if we're done
if (not freq_mode) and (row >= scan_len):
current_time_point+=1
row=0
current_time=datetime.now()
time_list.append(round((current_time-start_time).total_seconds(),1))
if current_time_point==SCAN_TIME_POINTS:
break
# scale to the number of scans (sum of any given scanline)
num_samples = arr.sum(axis=0)[0]
print("NUM SAMPLES:", num_samples)
print("ARR.MAX:", arr.max())
print("ARR.SHAPE:", arr.shape)
print("LEN_FREQS:", len(freq_list))
arr *= num_samples / arr.max()
#num_samples = arr.sum(axis=0)[0]
#arr *= num_samples / arr.max()
#print("NUM SAMPLES:",num_samples)
#print("ARR.MAX:",arr.max())
print("ARR.SHAPE:",arr.shape)
print("LEN_FREQS:",len(freq_list))
arr=arr.mean(axis=0)
print("ARR.SHAPE:",arr.shape)
#arr=arr.reshape(-1,arr.shape[2])
if freq_mode:
scan_len = len(freq_list)
# create the figure
fig, ax = plt.subplots()
# print(arr)
#print(arr)
print(freq_list)
print(time_list)
# display the result as heatmap
extent = [0, scan_len, -4 * (SCAN_WIDTH + 1), args.offset]
if freq_mode:
extent[0] = freq_list[0]
extent[1] = freq_list[-1]
im = ax.imshow(arr[:, :scan_len], cmap=args.map, extent=extent)
#extent[1] = time_list[-1]
extent[3] = freq_list[0]
extent[2] = freq_list[-1]
im = ax.imshow(arr, cmap=args.map, extent=extent)
fig.colorbar(im)
# set some properites and show
timestamp = datetime.now().strftime("%y-%m-%d %H-%M-%S")
title = f"RadioLib SX126x Spectral Scan {timestamp}"
if freq_mode:
plt.xlabel("Frequency [Hz]")
else:
plt.xlabel("Time [sample]")
plt.ylabel("RSSI [dBm]")
title = f"Spectrogram with values as mean dBm of 4 samples for 40 loops {timestamp}"
plt.xlabel("Time (N of loop at the moment)")
plt.ylabel("Frequency [MHz]")
#plt.xticks(time_list[::5],time_list[::5])
plt.yticks(freq_list.reverse(),freq_list.reverse())
ax.set_aspect("auto")
fig.suptitle(title)
fig.canvas.manager.set_window_title(title)
include/ui.h
+1 -1
View File
@@ -27,7 +27,7 @@
// The number of the spectrum screen lines = width of screen
// Resolution of the scan is limited by 128-pixel screen
#define STEPS 128
#define STEPS 10
#define SCREEN_HEIGHT 64 // ???? not used
src/main.cpp
+7 -7
View File
@@ -157,8 +157,8 @@ typedef enum
} TSCAN_METOD_ENUM;
#define SCAN_METHOD
#define METHOD_SPECTRAL // Spectral scan method
// #define METHOD_RSSI // Uncomment this and comment METHOD_SPECTRAL fot RSSI
// #define METHOD_SPECTRAL // Spectral scan method
#define METHOD_RSSI // Uncomment this and comment METHOD_SPECTRAL fot RSSI
// Output Pixel Formula
// 1 = rssi / 4, 2 = (rssi / 2) - 22 or 20
@@ -199,7 +199,7 @@ constexpr bool DRAW_DETECTION_TICKS = true;
// if more than 100 it can freeze
#define SAMPLES 35 //(scan time = 1294)
// number of samples for RSSI method
#define SAMPLES_RSSI 20 // 21 //
#define SAMPLES_RSSI 4 // 21 //
#define RANGE (int)(FREQ_END - FREQ_BEGIN)
@@ -241,9 +241,9 @@ uint64_t detection_count = 0;
bool single_page_scan = false;
bool SOUND_ON = false;
#define PRINT_DEBUG
// #define PRINT_DEBUG
#define PRINT_PROFILE_TIME
// #define PRINT_OUTPUT
#define PRINT_OUTPUT
// #ifdef PRINT_PROFILE_TIME
uint64_t loop_start = 0;
@@ -977,7 +977,7 @@ void loop(void)
else
{
#ifndef PRINT_OUTPUT
Serial.printf("Out-of-Range:result_index %d\n", result_index);
// Serial.printf("Out-of-Range:result_index %d\n", result_index);
#endif
}
}
@@ -1268,7 +1268,7 @@ void loop(void)
joy_btn_clicked = false;
#ifdef PRINT_PROFILE_TIME
Serial.printf("LOOP: %lld ms; SCAN: %lld ms;\n ", loop_time, scan_time);
Serial.printf("LOOP: %lld ms; SCAN: %lld ms;\n", loop_time, scan_time);
#endif
// No WiFi and BT Scan Without OSD
#ifdef OSD_ENABLED