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write(), print(), and println() now return number of bytes written.

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The type is long, and negative values indicate errors.  Needs more testing.
http://code.google.com/p/arduino/issues/detail?id=551
This commit is contained in:
David A. Mellis
2011-08-23 19:12:03 -04:00
parent b788ad593f
commit 8059abe581
24 changed files with 290 additions and 174 deletions
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6
libraries/SoftwareSerial/SoftwareSerial.cpp
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@ -440,10 +440,10 @@ int SoftwareSerial::available()
return (_receive_buffer_tail + _SS_MAX_RX_BUFF - _receive_buffer_head) % _SS_MAX_RX_BUFF;
}
void SoftwareSerial::write(uint8_t b)
long SoftwareSerial::write(uint8_t b)
{
if (_tx_delay == 0)
return;
return -1;
uint8_t oldSREG = SREG;
cli(); // turn off interrupts for a clean txmit
@ -484,6 +484,8 @@ void SoftwareSerial::write(uint8_t b)
SREG = oldSREG; // turn interrupts back on
tunedDelay(_tx_delay);
return 1;
}
void SoftwareSerial::flush()