Negative temperature unsigned integer issue

[maha-haji]

I've seen some weird behavior with my sensor when it dips below freezing (< 32 deg F, < 0 deg C) whereby the temperature reading is around 654 C and less. After posting this issue to the Adafruit forum, a support member suggested it was an unsigned integer problem. Since temperature register in the device is a 16 bit 2's complement value in 100ths of a degree. A temperature of -1C would be stored in binary as 1111 1111 1001 1100. Interpreted as a signed integer that is -100. As an unsigned integer it would be 65436. Since the library takes the contents of the register and divides by 100 - which results in the 654 that I am seeing.

Is it possible to fix this library bug?

Thanks!

[ladyada]

https://github.com/adafruit/Adafruit_CircuitPython_LPS35HW/blob/master/adafruit_lps35hw.py#L189

needs something like

if x > 32767:
  x -= 65536

@maha-haji can you try adding that pseudo code in the location indicated above and see if that helps

[jposada202020]

@maha-haji changes were made in #8. Did you test this changes, let me know, thanks :)