106 lines
1.4 KiB
Markdown
106 lines
1.4 KiB
Markdown
# bh1750 Module
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##Require
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```lua
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bh1750 = require("bh1750")
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```
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## Release
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```lua
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bh1750 = nil
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package.loaded["bh1750"]=nil
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```
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<a id="bh1750_init"></a>
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##init()
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####Description
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Setting the I2C pin of bh1750.<br />
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####Syntax
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init(sda, scl)
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####Parameters
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sda: 1~12, IO index.<br />
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scl: 1~12, IO index.<br />
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####Returns
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nil
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####Example
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```lua
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SDA_PIN = 6 -- sda pin, GPIO12
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SCL_PIN = 5 -- scl pin, GPIO14
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bh1750 = require("bh1750")
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bh1750.init(SDA_PIN, SCL_PIN)
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-- release module
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bh1750 = nil
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package.loaded["bh1750"]=nil
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```
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####See also
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**-** []()
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<a id="bh1750_read"></a>
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##read()
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####Description
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Read Lux data from bh1750.<br />
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####Syntax
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read()
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####Parameters
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nil.<br />
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####Returns
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nil.<br />
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####Example
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```lua
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SDA_PIN = 6 -- sda pin, GPIO12
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SCL_PIN = 5 -- scl pin, GPIO14
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bh1750 = require("bh1750")
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bh1750.init(SDA_PIN, SCL_PIN)
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bh1750.read()
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-- release module
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bh1750 = nil
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package.loaded["bh1750"]=nil
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```
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####See also
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**-** []()
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<a id="bh1750_getlux"></a>
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##getlux()
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####Description
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Get lux from bh1750.<br />
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####Syntax
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getlux()
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####Parameters
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nil.<br />
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####Returns
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l: Integer, getlux from bh1750.
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####Example
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```lua
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SDA_PIN = 6 -- sda pin, GPIO12
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SCL_PIN = 5 -- scl pin, GPIO14
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bh1750 = require("bh1750")
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bh1750.init(SDA_PIN, SCL_PIN)
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bh1750.read()
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l = bh1750.getlux()
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print("lux: "..(l / 100).."."..(l % 100).." lx")
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-- release module
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bh1750 = nil
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package.loaded["bh1750"]=nil
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```
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####See also
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**-** []()
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