Malheureusement c'est encore lent, seulement 1.6mS entre deux mesures

Mesures/ADC/ADS1115/0_ads1115.lua

@@ -1,33 +1,31 @@
 -- Lit le le petit convertisseur ADC ADS1115
 
+-- Malheureusement cette méthode est très lente, 
+-- on ne peut pas lire plus vite que 1.6mS !
+-- et encore sur le même canal
+
 function readADS1115()
-    if verbose then print("\n 0_ads1115.lua   zf200126.1741 \n") end
+    if verbose then print("\n 0_ads1115.lua   zf200126.1803 \n") end
     
     id = 0   sda = 5   scl = 6   addr = 0x48
     
-    i2c.setup(id, sda, scl, i2c.SLOW)   sda = nil   scl = nil
+    i2c.setup(id, sda, scl, i2c.FAST)   sda = nil   scl = nil
     ads1115.reset()
-    adc0 = ads1115.ads1115(id, addr)
+    adc = ads1115.ads1115(id, addr)
-    adc1 = ads1115.ads1115(id, addr)
-    adc2 = ads1115.ads1115(id, addr)
-    adc3 = ads1115.ads1115(id, addr)
 
-    adc0:setting(ads1115.GAIN_6_144V, ads1115.DR_128SPS, ads1115.SINGLE_0, ads1115.CONTINUOUS)
+    t1=tmr.now()
-    adc1:setting(ads1115.GAIN_6_144V, ads1115.DR_128SPS, ads1115.SINGLE_1, ads1115.CONTINUOUS)
+    adc:setting(ads1115.GAIN_6_144V, ads1115.DR_860SPS, ads1115.SINGLE_0, ads1115.CONTINUOUS)
-    adc2:setting(ads1115.GAIN_6_144V, ads1115.DR_128SPS, ads1115.SINGLE_2, ads1115.CONTINUOUS)
+    t2=tmr.now()
-    adc3:setting(ads1115.GAIN_6_144V, ads1115.DR_128SPS, ads1115.SINGLE_3, ads1115.CONTINUOUS)
+    print("setup, t2-t1: ",(t2-t1)/1000)
 
     tmr.delay(10*1000)
 
     function read_ADS1115()
         t1=tmr.now()
-        volt0 = adc0:read()
+        volt = adc:read()
-        volt1 = adc1:read()
-        volt2 = adc2:read()
-        volt3 = adc3:read()
         t2=tmr.now()
         print("read, t2-t1: ",(t2-t1)/1000)
-        print(volt0, volt1, volt2, volt3) 
+        print(volt) 
     end
 
 --[[
@@ -41,6 +39,7 @@ if verbose then print("ADC0: "..read_ADS1115(0).." V") end
     if verbose then print(node.heap()) end
 end
 
+verbose=true
 readADS1115()
 read_ADS1115()