41 lines
1.2 KiB
ReStructuredText
41 lines
1.2 KiB
ReStructuredText
MCP9808 Temperature Sensor
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##########################
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Overview
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========
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Sample application that periodically reads temperature from the MCP9808 sensor.
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The MCP9808 digital temperature sensor converts temperatures between -20°C and
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+100°C to a digital word with ±0.5°C (max.) accuracy. It is I2C compatible and
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supports up to 16 devices on the bus. We do not require pullup resistors on the
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data or clock signals as they are already installed on the breakout board.
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The MCP9808 is available in a discrete component form but it is much easier to
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use it mounted on a breakout board. We used the Adafruit breakout board.
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In this hookup we are only connecting one device to one of the supported boards.
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It reads the temperature and displays it on the console.
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Software
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========
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This sample uses the Zephyr sensor APIs and the provided driver for the MCP9808
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sensor.
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Pinouts
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=======
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The MCP9808 requires 2 wires for the I2C bus plus power and ground. The power
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can be either 5V or 3.3V.
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We connect the Data and clock wires to Analog ports A4 and A5 which is the I2C
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pins on Arduino compatible boards.
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Data Sheets
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===========
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http://www.microchip.com/wwwproducts/en/en556182
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