Transform int to python byte

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Hello, Need to transform a value int to byte.

I tried to do it this way:

import serial
ser = serial.Serial('/dev/ttyACM0', 9600)

angulo = 90

ser.write(angulo)

#while 1 :
print ser.readline()

I need to send a value to the Arduino, at first, only accepted in byte. Thank you!

python int byte

1 answer

5

Only use:

valor = bytes([90])

See more here.

To convert byte to integer, use:

int.from_bytes(meus_bytes, byteorder='big')

If it is big endian, and 

int.from_bytes(neus_bytes, byteorder='little')

if it’s little endian.

  • Thank you! man, I need, now on Rduino, do the opposite, receive this value in bytes and turn into int. How to do?

  • See my issue.

  • value[0] - in Python 3 when you recover values of an byte object using dices, you see them as integers (no signal).

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