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

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This commit is contained in:
Christian Zufferey
2020-01-26 18:03:23 +01:00
parent 92a4771130
commit cd132ca354
1 changed files with 14 additions and 15 deletions
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29
Mesures/ADC/ADS1115/0_ads1115.lua
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@@ -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)
adc1 = ads1115.ads1115(id, addr)
adc2 = ads1115.ads1115(id, addr)
adc3 = ads1115.ads1115(id, addr)
adc = ads1115.ads1115(id, addr)
adc0:setting(ads1115.GAIN_6_144V, ads1115.DR_128SPS, ads1115.SINGLE_0, ads1115.CONTINUOUS)
adc1:setting(ads1115.GAIN_6_144V, ads1115.DR_128SPS, ads1115.SINGLE_1, ads1115.CONTINUOUS)
adc2:setting(ads1115.GAIN_6_144V, ads1115.DR_128SPS, ads1115.SINGLE_2, ads1115.CONTINUOUS)
adc3:setting(ads1115.GAIN_6_144V, ads1115.DR_128SPS, ads1115.SINGLE_3, ads1115.CONTINUOUS)
t1=tmr.now()
adc:setting(ads1115.GAIN_6_144V, ads1115.DR_860SPS, ads1115.SINGLE_0, ads1115.CONTINUOUS)
t2=tmr.now()
print("setup, t2-t1: ",(t2-t1)/1000)
tmr.delay(10*1000)
function read_ADS1115()
t1=tmr.now()
volt0 = adc0:read()
volt1 = adc1:read()
volt2 = adc2:read()
volt3 = adc3:read()
volt = adc: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()