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| author | Damien George <damien.p.george@gmail.com> | 2016-08-29 12:27:21 +1000 |
|---|---|---|
| committer | Damien George <damien.p.george@gmail.com> | 2016-08-29 12:27:21 +1000 |
| commit | 8e9b98e974ff141ba78918021f3203f620d1de8a (patch) | |
| tree | 2667bcb7deebef5d8b21dae30def060c442b551e /esp8266/modules/onewire.py | |
| parent | 9fba618356679b0eede00b7cd746d1a53e6b3772 (diff) | |
| download | micropython-8e9b98e974ff141ba78918021f3203f620d1de8a.tar.gz micropython-8e9b98e974ff141ba78918021f3203f620d1de8a.zip | |
esp8266/modules/onewire: Change onewire.read() to onewire.readinto().
This allows 1-wire drivers (eg DS18X20) to perform in-place operations and
hence do less memory allocations.
Diffstat (limited to 'esp8266/modules/onewire.py')
| -rw-r--r-- | esp8266/modules/onewire.py | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/esp8266/modules/onewire.py b/esp8266/modules/onewire.py index af5675649b..06b216a57a 100644 --- a/esp8266/modules/onewire.py +++ b/esp8266/modules/onewire.py @@ -27,11 +27,9 @@ class OneWire: def readbyte(self): return _ow.readbyte(self.pin) - def read(self, count): - buf = bytearray(count) - for i in range(count): + def readinto(self, buf): + for i in range(len(buf)): buf[i] = _ow.readbyte(self.pin) - return buf def writebit(self, value): return _ow.writebit(self.pin, value) |