I'm working with a Raspberry Pi Pico using micropython and I need to send through serial port data from some sensors in and hexadecimal string.
For instance:
- temp = 27.52
- hum = 42
- alt = 125.45
- angle = 32.27
I tought of multiply the floats by 100 to eliminate the decimal point and the divided again by 100 in the server side, leaving me with:
- temp = 2752
- hum = 42
- alt = 12545
- angle = 3227
Then I'd like to serialize this between an hex code:
AA 08 26 {temp} {hum} {alt} {angle} 10 22 33
Then in the server side knowing what bytes correspond to every value I can parse the data. I need to do it in hexadecimal because this data is going to be sent through a satilital module and the manufacter asks for this format.
What's the best/pythonic/eficient way to do this?
Thanks in advance for any help you could offer.
Until now I've only been doing some tests but I don't know why I don't have the same result creating a bytearray of the "Payload" list than casting to hex every value of the list, I also don't know if there's a better way of doing this.
from machine import Pin
aceleracion = 15
angulo = 1970
temperatura = 26.57
temperatura_ant = 25.87
altura = 58.25
altura_ant = 60.27
Payload = []
hexPayload = []
Payload.append(aceleracion)
Payload.append(angulo)
Payload.append(int(temperatura*100))
Payload.append(int(temperatura_ant*100))
Payload.append(int(altura*100))
Payload.append(int(altura_ant*100))
for val in Payload:
hexPayload.append(hex(val))
bytePayload = bytearray(Payload)
print(Payload)
print(hexPayload)
print(bytePayload)
This is what I get in the serial print.
[15, 1970, 2657, 2587, 5825, 6027]
['0xf', '0x7b2', '0xa61', '0xa1b', '0x16c1', '0x178b']
bytearray(b'\x0f\xb2a\x1b\xc1\x8b')
