diff options
| author | Daniel Thompson <daniel@redfelineninja.org.uk> | 2020-11-11 22:05:23 (GMT) |
|---|---|---|
| committer | Daniel Thompson <daniel@redfelineninja.org.uk> | 2020-11-11 22:07:21 (GMT) |
| commit | 294797d8263b316809214a2d1cb9534dff810bd0 (patch) | |
| tree | c97dfc78eafb3bc2f3b88be3841a29267215da50 | |
| parent | 12110aa79ccf3b0fb307527d9968132d1214bb1c (diff) | |
hrs3300: Defer initialization until the HRS is used
This means hardware failure won't cause the initial boot to fail. This
won't stop the heart rate app from crashing when it starts up but at
least it will give a comprehensible crash report.
Signed-off-by: Daniel Thompson <daniel@redfelineninja.org.uk>
| -rw-r--r-- | wasp/drivers/hrs3300.py | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/wasp/drivers/hrs3300.py b/wasp/drivers/hrs3300.py index 3843887..83f716b 100644 --- a/wasp/drivers/hrs3300.py +++ b/wasp/drivers/hrs3300.py @@ -27,6 +27,7 @@ class HRS3300: def __init__(self, i2c): self._i2c = i2c + def init(self): w = self.write_reg # HRS disabled, 12.5 ms wait time between cycles, (partly) 20mA drive @@ -50,6 +51,8 @@ class HRS3300: self._i2c.writeto_mem(_I2CADDR, addr, bytes((val,))) def enable(self): + self.init() + enable = self.read_reg(_ENABLE) enable |= _ENABLE_HEN self.write_reg(_ENABLE, enable) |