Création de la structure très générale du bloc de récupération des données, de conversion dans un tableau et d'écriture dans le fichier

main.py

@@ -1,11 +1,79 @@
-
+import serial
 import numpy as np
 import matplotlib.pyplot as plt
 import msvcrt #clavier
+import time
+
+#Variables principales
+
+serial_path = '/dev/tty.usbserial'
+file_path = "~/PoDoCor"
+data_nb = 10
+
+#Variables cachees
+
+flag_data = 0
+data_buff_max = 10
+data_buff_nb = 0
+data_buff = ""
+pressed_key = ''
+data = np.empty(1, data_nb)
+raw_data_temp = np.empty(1, data_nb)
+
 
 #Programme principal
 
-while(msvcrt.getch() != b'P'):
-    print('b')
+#init
+arduino_ser = serial.Serial(serial_path, 9600) #communication avec Arduino
+
+while(1):
+    pressed_key = msvcrt.getch() #detection de touche pressee (demarrage procedure acquisition)
+    if(pressed_key == 'P'):
+        flag_data = 1
+        data_buff_nb = 0
+        file_name = file_path + "/" + time.asctime()+".csv"
+        file  = open(file_name, "w")
+        file.close()
+    else:
+        flag_data = 0
+
+    while(flag_data == 1): #boucle de reception des donnees
+        arduino_ser.write('1') #envoi de '1' a l'Arduino
+        raw_data_txt = ser.readline() #format des donnees: data1,data2,data3\n raw data
+        data_buff_nb +=1
+        data_buff = data_buff + raw_data_txt + "\n" #add 1 data line in buffer
+
+        #procedure extraction donnees pour affichage
+        for i in range(data_nb):
+            carac_coma_nb = 1
+            while((raw_data_txt[carac_coma_nb] != ',') or (raw_data[carac_coma_nb:carac_coma_nb+2] != "\n")): #fin de la donnee ou de la ligne
+                carac_coma_nb +=1
+            single_data = int(raw_data_txt[0:carac_coma_nb])
+            raw_data_txt = raw_data_txt[carac_coma_nb+1:]
+            raw_data_temp[0,i] = single_data
+            np.append(data, raw_data, axis=1)
+            raw_data_temp = raw_data*0
+
+        # procedure d'ecriture fichier
+        if(data_buff_nb == data_buff_max):
+            file = open(file_name,"a") #mode append
+            file.write(data_buff)
+            file.close()
+            data_buff = "" #remise a zero
+            data_buff_nb = 0
+
+        pressed_key = msvcrt.getch() #detection de touche pressee (arret procedure acquisition)
+        if(pressedKey == 'P'):
+            flag_data = 0
+        else:
+            flag_data = 1
+
+
+    assert msvcrt.getch() != b'P' "Sortie de la boucle de reception des donnees"
 
-print('y')
+    if(data_buff_nb > 0):
+        file = open(file_name,"a")
+        file.write(data_buff)
+        file.close()
+        data_buff = ""
+        data_buff_nb = 0