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rwaldron / johnny-five

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BMP180 Temperature (and consequently Pressure) Error ( > about 40 °C )

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averelon
averelon commented Aug 7, 2020

The uncompensated temperature of the BMP180 is incorrectly converted to a 16-bit signed value, instead of a 32-bit signed value (long). Since the data is 16-bits wide and can therefore not be negative, the easy fix would be to do the following:

sip.js(1128): uncompensated = uint16(data[0], data[1]);

Please see page 15 of the manual of the BMP180 chip:
https://ae-bst.resource.bosch.com/media

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Bug Hardware Required Good First Issue Class:Barometer

tinygo-org / tinygo

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mattjlewis / diozero

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Java Device I/O library that is portable across Single Board Computers and microcontrollers. Tested with Raspberry Pi, Odroid C2, BeagleBone Black, Next Thing CHIP, Asus Tinker Board and Arduinos / Pico. Supports GPIO, I2C, SPI as well as Serial communication. Also known to work with Udoo Quad.

java raspberry-pi arduino beaglebone-black gpio serial i2c spi hacktoberfest analog-devices odroid-c2 spi-device firmata pico serial-port serial-communication asus-tinker-board libgpiod gpiod spi-devices
  • Updated Jun 27, 2022
  • Java

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