TX RX communication from a sensor for python code

Good morning, I’m trying to establish an arduino TX-RX connection to use a code in python.

print ('Configuring Serial port')
       
ser = serial.Serial ('/dev/serial0') 

ser.baudrate = 115200

This code is made for a raspberry pi board. But I’m trying to use TX RX via Arduino Uno.

The whole code in question is this

import serial, time
import datetime as dt
import numpy as np
import cv2

# function to get Emissivity from MCU
def get_emissivity():
    ser.write(serial.to_bytes([0xA5,0x55,0x01,0xFB]))
    read = ser.read(4)
    return read[2]/100

# function to get temperatures from MCU (Celsius degrees x 100)
def get_temp_array(d):

    # getting ambient temperature
    T_a = (int(d[1540]) + int(d[1541])*256)/100

    # getting raw array of pixels temperature
    raw_data = d[4:1540]
    T_array = np.frombuffer(raw_data, dtype=np.int16)

    return T_a, T_array

# function to convert temperatures to pixels on image
def td_to_image(f):
    norm = np.uint8((f/100 - Tmin)*255/(Tmax-Tmin))
    norm.shape = (24,32)
    return norm

########################### Main cycle #################################
# Color map range
Tmax = 40
Tmin = 20

print ('Configuring Serial port')
ser = serial.Serial ('/dev/serial0')
ser.baudrate = 115200

# set frequency of module to 4 Hz
ser.write(serial.to_bytes([0xA5,0x25,0x01,0xCB]))
time.sleep(0.1)

# Starting automatic data colection
ser.write(serial.to_bytes([0xA5,0x35,0x02,0xDC]))
t0 = time.time()

try:
    while True:
        # waiting for data frame
        data = ser.read(1544)

        # The data is ready, let's handle it!
        Ta, temp_array = get_temp_array(data)
        ta_img = td_to_image(temp_array)

        # Image processing
        img = cv2.applyColorMap(ta_img, cv2.COLORMAP_JET)
        img = cv2.resize(img, (320,240), interpolation = cv2.INTER_CUBIC)
        img = cv2.flip(img, 1)

        text = 'Tmin = {:+.1f} Tmax = {:+.1f} FPS = {:.2f}'.format(temp_array.min()/100, temp_array.max()/100, 1/(time.time() - t0))
        cv2.putText(img, text, (5, 15), cv2.FONT_HERSHEY_SIMPLEX, 0.45, (0, 0, 0), 1)
        cv2.imshow('Output', img)

        # if 's' is pressed - saving of picture
        key = cv2.waitKey(1) & 0xFF
        if key == ord("s"):
            fname = 'pic_' + dt.datetime.now().strftime('%Y-%m-%d_%H-%M-%S') + '.jpg'
            cv2.imwrite(fname, img)
            print('Saving image ', fname)

        t0 = time.time()

except KeyboardInterrupt:
    # to terminate the cycle
    ser.write(serial.to_bytes([0xA5,0x35,0x01,0xDB]))
    ser.close()
    cv2.destroyAllWindows()
    print(' Stopped')

# just in case 
ser.close()
cv2.destroyAllWindows()

What changes must be made to work?

If no-one answers you could always ask in a forum that actually supports Python or Raspberry Pis.

https://forum.micropython.org/

This Simple Python - Arduino demo may help.

...R