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Commit Graph

9 Commits

Author SHA1 Message Date
Matthijs Kooijman
9d8f350ffe Mark SoftwareSerial::recv and handle_interrupt as always_inline
Since those functions are only called once now, it makes sense to inline
them. This saves a few bytes of program space, but also saves a few
cycles in the critical RX path.
2015-01-26 17:03:25 +01:00
Matthijs Kooijman
80ea38b1dc Mark SoftwareSerial::tx_pin_write as "always_inline"
Somehow gcc 4.8 doesn't inline this function, even though it is always
called with constant arguments and can be reduced to just a few
instructions when inlined. Adding the always_inline attribute makes gcc
inline it, saving 46 bytes on the Arduino uno.

gcc 4.3 already inlined this function, so there are no space
savings there.
2015-01-26 17:03:25 +01:00
Matthijs Kooijman
f3aa5f23c4 Fix race condition in SoftwareSerial::overflow()
If an interrupt causing overflow would occur between reading
_buffer_overflow and clearing it, this overflow condition would be
immediately cleared and never be returned by overflow().

By only clearing the overflow flag if an overflow actually occurred,
this problem goes away (worst case overflow() returns false even though
an overflow _just_ occurred, but then the next call to overflow() will
return true).
2015-01-26 17:03:25 +01:00
Matthijs Kooijman
934393398b Add SoftwareSerial::stopListening()
This allows one to explicitly stop a SoftwareSerial instance from
listening, without having to make another one listening.
2015-01-26 17:03:25 +01:00
Matthijs Kooijman
db1a4ad139 Add SoftwareSerial::setRxIntMsk()
This moves the interrupt mask enabling / disabling code into a separate
method, so we can call it from multiple spots next.
2015-01-26 17:03:25 +01:00
Cristian Maglie
7f17170678 Revert "SoftwareSerial library to the new format"
This reverts commit 38c3bbbd3c.
2013-11-15 12:54:59 +01:00
Fede85
38c3bbbd3c SoftwareSerial library to the new format 2013-07-03 23:18:21 +02:00
Federico Fissore
d458ef7806 fixed permissions on a lot of text files. see #1116 2012-12-10 10:42:49 +01:00
Cristian Maglie
57b8713cab Moved libraries folder inside platform folder. Now libraries and examples are searched per board/platform 2012-01-04 15:14:51 +01:00