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ruanhaishen
Nodemcu Firmware
Commits
f45e6fec
Commit
f45e6fec
authored
Jan 30, 2015
by
HuangRui
Browse files
Followed Vladimir Dronnikov's advices.
https://github.com/nodemcu/nodemcu-firmware/pull/156
parent
9cab7513
Changes
1
Show whitespace changes
Inline
Side-by-side
lua_modules/bh1750/bh1750.lua
View file @
f45e6fec
...
@@ -7,10 +7,10 @@
...
@@ -7,10 +7,10 @@
-- MIT license, http://opensource.org/licenses/MIT
-- MIT license, http://opensource.org/licenses/MIT
-- ***************************************************************************
-- ***************************************************************************
local
moduleName
=
...
local
moduleName
=
...
local
M
=
{}
local
M
=
{}
_G
[
moduleName
]
=
M
_G
[
moduleName
]
=
M
--I2C slave address of GY-30
--I2C slave address of GY-30
local
GY_30_address
=
0
X
23
local
GY_30_address
=
0
x
23
-- i2c interface ID
-- i2c interface ID
local
id
=
0
local
id
=
0
--LUX
--LUX
...
@@ -18,12 +18,14 @@ local moduleName = ...
...
@@ -18,12 +18,14 @@ local moduleName = ...
--CMD
--CMD
local
CMD
=
0x10
local
CMD
=
0x10
local
init
=
false
local
init
=
false
--Make it more faster
local
i2c
=
i2c
function
M
.
init
(
sda
,
scl
)
function
M
.
init
(
sda
,
scl
)
i2c
.
setup
(
id
,
sda
,
scl
,
i2c
.
SLOW
)
i2c
.
setup
(
id
,
sda
,
scl
,
i2c
.
SLOW
)
--print("i2c ok..")
--print("i2c ok..")
init
=
true
init
=
true
end
end
local
function
read_data
(
ADDR
,
commands
,
length
)
local
function
read_data
(
ADDR
,
commands
,
length
)
i2c
.
start
(
id
)
i2c
.
start
(
id
)
i2c
.
address
(
id
,
ADDR
,
i2c
.
TRANSMITTER
)
i2c
.
address
(
id
,
ADDR
,
i2c
.
TRANSMITTER
)
i2c
.
write
(
id
,
commands
)
i2c
.
write
(
id
,
commands
)
...
@@ -34,21 +36,22 @@ local moduleName = ...
...
@@ -34,21 +36,22 @@ local moduleName = ...
c
=
i2c
.
read
(
id
,
length
)
c
=
i2c
.
read
(
id
,
length
)
i2c
.
stop
(
id
)
i2c
.
stop
(
id
)
return
c
return
c
end
end
local
function
read_lux
()
local
function
read_lux
()
dataT
=
read_data
(
GY_30_address
,
CMD
,
2
)
dataT
=
read_data
(
GY_30_address
,
CMD
,
2
)
UT
=
string.byte
(
dataT
,
1
)
*
256
+
string.byte
(
dataT
,
2
)
--Make it more faster
UT
=
dataT
:
byte
(
1
)
*
256
+
dataT
:
byte
(
2
)
l
=
(
UT
*
1000
/
12
)
l
=
(
UT
*
1000
/
12
)
return
(
l
)
return
(
l
)
end
end
function
M
.
read
()
function
M
.
read
()
if
(
not
init
)
then
if
(
not
init
)
then
print
(
"init() must be called before read."
)
print
(
"init() must be called before read."
)
else
else
read_lux
()
read_lux
()
end
end
end
end
function
M
.
getlux
()
function
M
.
getlux
()
return
l
return
l
end
end
return
M
return
M
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