Python Forum

Hello , guys
i am new using python i would like to send a package of hexadecimal values using the uart the problem it is two of the values are variables i have done a lot of research and i cant find anything it will be really helpful here is my code basically i am trying to send this

Output:
x = b'\x41\x0A\x01\variable\variable'

contition=True
while contition:
  main_input  = int(input("select a number: "))

  if main_input == 13:
   contition == False
   break

  elif main_input == 1:
    light_val = int(input("insert the new threshold value: "))
    a = (1, 10, light_val)
    csum = sum(a)
    csum = hex( csum^ 0xFF)
    print(csum)
    b = hex(light_val)
    c = hex(10)
    d = hex(1)
    e = hex(65)
    y = (e, c, d, b, csum) 
    x = b'\x41\x0A\x01\x05\EF'
    
    #ser.write(x)
    #ser.write(Y)
    print(Y)
  else:
    print(" Not Valid choice")

thanks a lot

Are you trying to send string (ascii) representations or are you trying to send byte values?

To send a ten, do you want to send a numeric 10, or an ascii "1" followed by an ascii "0"?

The "output" you show above is a bytes object (so numeric), while you have hex() calls all over your code which is creating strings.

bolofred is correct.

for unsigned bytes:
hexadecimal is the base 16 representation of byte (8 bits) data

decimal is base 10
octal base 8
binary base 2
char is value assigned to first 127 bits of a byte, or all 256 bits if extended ascii is used.
html is decimal value, zero padded, preceeded with &#


Example:

Output:
the ascii string 'cow'
=============================================
| chr | hex | dec | oct | html  |  binary   |
=============================================
|  c  | 63  | 99  | 143 | &#099 | 0110 0011 |
---------------------------------------------
|  o  | 6f  | 111 | 157 | &#111 | 0110 1111 |
---------------------------------------------
|  w  | 77  | 119 | 167 | &#077 | 0111 0111 |
=============================================

Each is a representation of the same byte value.