Skip to content

auto_convert: set/unset bias, + use in read_rtd #32

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
merged 1 commit into from
Jan 17, 2022
Merged

auto_convert: set/unset bias, + use in read_rtd #32

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
auto_convert: set/unset bias, + use in read_rtd
  • Loading branch information
@emmanuelthome
emmanuelthome committed May 25, 2021
commit 6bf5b785cdba7515c0d2cd064e9aff255ff81b4b
7 changes: 7 additions & 0 deletions adafruit_max31865.py
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -204,8 +204,10 @@ def auto_convert(self, val):
config = self._read_u8(_MAX31865_CONFIG_REG)
if val:
config |= _MAX31865_CONFIG_MODEAUTO # Enable auto convert.
config |= _MAX31865_CONFIG_BIAS # Enable bias.
else:
config &= ~_MAX31865_CONFIG_MODEAUTO # Disable auto convert.
config &= ~_MAX31865_CONFIG_BIAS # Disable bias.
self._write_u8(_MAX31865_CONFIG_REG, config)

@property
Expand Down Expand Up @@ -243,6 +245,11 @@ def read_rtd(self):
nominal value of the resistance-to-digital conversion and some math. If you just want
temperature use the temperature property instead.
"""
if self.auto_convert:
rtd = self._read_u16(_MAX31865_RTDMSB_REG)
if not rtd & 1:
rtd >>= 1
return rtd
self.clear_faults()
self.bias = True
time.sleep(0.01)
Expand Down