https://github.com/kfricke/micropython-mcp9808

MicroPython driver for the Microchip MCP9808 temperature sensor
https://github.com/kfricke/micropython-mcp9808

Last synced: 2 months ago
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MicroPython driver for the Microchip MCP9808 temperature sensor

• Host: GitHub
• URL: https://github.com/kfricke/micropython-mcp9808
• Owner: kfricke
• License: mit
• Created: 2016-02-08T07:28:13.000Z (almost 9 years ago)
• Default Branch: master
• Last Pushed: 2023-01-16T21:39:15.000Z (almost 2 years ago)
• Last Synced: 2024-08-02T20:45:03.252Z (5 months ago)
• Language: Python
• Size: 9.77 KB
• Stars: 6
• Watchers: 0
• Forks: 12
• Open Issues: 2
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Awesome Lists containing this project

• awesome-mpython - micropython-mcp9808 - Driver for the Microchip MCP9808 temperature sensor. (精选驱动库 / 传感器)
• awesome-micropython - micropython-mcp9808 - Driver for the Microchip MCP9808 temperature sensor. (Libraries / Sensors)

README

        
# micropython-mcp9808

This repository contains a MicroPython "driver" implementation for the MCP9808

temperature sensor from Microchip.

## Implemented

* Reading the temperature value in degree celsius. The `get_temp()` method supports floating point values and the `get_temp_int()` method does not use floating point arythmetic at all and does return a tuple of decimal and fraction parts of the temperature reading.

* Shutdown mode to save power. When not in shutdown mode the sensor

does draw 200-400 uA. Data acquisition can only be stopped in the so called

"shutdown mode". In this mode communication is still possible using I2C.

* Changing the data acquisition resolution and duration. On power up the sensor

is set to maximum resolution.

    | Mode Name | Resolution  | Duration | Samples / sec |

    | --------- | ----------- | -------- | ------------- |

    | T_RES_MIN | +-0.5 °C    |    30 ms | 33            |

    | T_RES_LOW | +-0.25 °C   |    65 ms | 15            |

    | T_RES_AVG | +-0.125 °C  |   130 ms |  7            |

    | T_RES_MAX | +-0.0625 °C |   250 ms |  4            |

* Alert mode: boundaries are defined by using

`set_alert_boundary_temp()`. `set_alert_mode(self, enable_alert, output_mode, polarity, selector)`

allows to enable/disable alert functionality, set the desired output mode to

comparator or interrupt, switch te polarity between active-low or active-high

(pull-up resistor required!) as well as what boundaries should trigger an alert.

## Not yet implemented

* hysteresis