9 lines
749 B
Markdown
9 lines
749 B
Markdown
# Component: BH1750
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* This component will show you how to use I2C module read external i2c sensor data, here we use BH1750 light sensor(GY-30 module).
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* BH1750 measurement mode:
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* one-time mode: bh1750 just measure only one time when receieved the one time measurement command, so you need to send this command when you want to get intensity value every time
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* continuous mode: bh1750 will measure continuously when receieved the continuously measurement command, so you just need to send this command once, and than call `bh1750_get_data()` to get intensity value repeatedly.
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## Notice:
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* Bh1750 has different measurement time in different measurement mode, and also, measurement time can be changed by call `bh1750_change_measure_time()`
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