[Python 3.X] Probleme encodage pour arduino

Salut

J'ai un petit soucis de dialogue entre l'arduino et python3

Le script python surveille mqtt a chaque message il active un switch controler par un MCP23017

En premier le prog arduino

Code:

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#include "Adafruit_MCP23017.h"
#include "Wire.h"
 
Adafruit_MCP23017 mcp;
 
void setup() {
mcp.begin();
for (int pin = 0; pin  < 16; pin ++)
    {
        mcp.pinMode(pin, OUTPUT);
    } 
for (int pin = 0; pin < 16; pin++)
    {
        mcp.digitalWrite(pin, HIGH); 
    }
Serial.begin(9600);   
}
void loop() {
    if(Serial.available())
    {        
        String pinstr = Serial.readStringUntil(',');
        String commandestr = Serial.readStringUntil('\n');
        int pin = pinstr.toInt();
        Serial.print(pin);
        int commande = commandestr.toInt();
        Serial.print(commande);
        mcp.digitalWrite(pin, commande);

avec ce programme en ligne de commande ca marche nikel

Code:

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>>> ser=serial.Serial('/dev/ttyUSB0', 9600, timeout=1, writeTimeout=1)
>>> ser.write(b'1,1')
3

par contre quand je lance le script seul le pin 0 est activé ....

Code:

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import sys
import queue
import serial
import time
import threading
from threading import *
import paho.mqtt.client as mqtt
import paho.mqtt.publish as publish
 
class arduinocommande(threading.Thread):
        def __init__(self, commande,fin):
                threading.Thread.__init__(self)
                self.commande=commande
                self.terminated = fin
 
        def run(self):
 
                while self.terminated:
                        try: 
 
                                ser = serial.Serial('/dev/tty-arduino', 9600, timeout=1, writeTimeout=1)
                                time.sleep(6)
                                print("connection ok")
                                while ser.isOpen():
                                        if not self.commande.empty():
                                                com=str(self.commande.get())+"\n"
                                                print ("commande "+str(com))
                                                com=bytes(com,'utf-8')
                                                ser.write(com)
                                                print (ser.readline())
                                                print (ser.readline())
                                        time.sleep(0.5)
                        except:
                                try:ser.close()
                                except:pass
                                print(sys.exc_info())
                                time.sleep(3)
commande=queue.Queue()
fin=True
arduinocommande(commande,fin).start()
 
def on_connect(client, userdata, flags, rc):
        print ("Connected with result code "+str(rc))
        client.subscribe("filpilote")
 
def on_message(client, userdata, msg):
        print(msg.payload)
        commande.put(str(msg.payload))
 
while True:
        try:
                client = mqtt.Client()
                client.on_connect = on_connect
                client.on_message = on_message
                client.connect("127.0.0.1", 1883, 60)
                client.loop_forever()
        except:
                print(sys.exc_info())
                print ("Exception handled, reconnecting...\nDetail:\n%s")
                time.sleep(5)
 
fin=False

Je lance la commande mqtt avec ce script

Code:

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import sys
import paho.mqtt.publish as publish
import urllib2
 
 
 
print sys.argv
channel=sys.argv[1]
command=sys.argv[2]
host=sys.argv[3]
 
 
publish.single(channel,command, hostname=host)

Code:

python mqttc.py filpilote 9,0 10.0.0.22

Un peu aide ?

Merci