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Moving write errors out of return value into separate API methods.

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write(), print(), println() now return size_t (and don't use negative values to signal errors).
Print adds writeError() for checking for write errors, clearWriteError() to reset the flag to false, and a protected setWriteError() for signalling errors.

http://code.google.com/p/arduino/issues/detail?id=598
This commit is contained in:
David A. Mellis
2011-08-26 16:08:14 -04:00
parent 929597375b
commit b73cf39d94
23 changed files with 184 additions and 173 deletions
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6
libraries/Ethernet/Udp.cpp
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@@ -102,18 +102,18 @@ int UDP::endPacket()
return sendUDP(_sock);
}
ssize_t UDP::write(uint8_t byte)
size_t UDP::write(uint8_t byte)
{
return write(&byte, 1);
}
ssize_t UDP::write(const char *str)
size_t UDP::write(const char *str)
{
size_t len = strlen(str);
return write((const uint8_t *)str, len);
}
ssize_t UDP::write(const uint8_t *buffer, size_t size)
size_t UDP::write(const uint8_t *buffer, size_t size)
{
uint16_t bytes_written = bufferData(_sock, _offset, buffer, size);
_offset += bytes_written;