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path: root/cores/arduino/HardwareSerial.cpp
AgeCommit message (Collapse)Author
2014-01-16Remove unused variableMatthijs Kooijman
2014-01-16Slightly reduce code utilization by inlining HardwareSerail begin(baud) and ↵Cristian Maglie
operator bool()
2014-01-16Remove duplicate code from HardwareSerial::begin() methods.Matthijs Kooijman
There are two begin methods, one which accepts just a baud rate and uses the default bit settings and one which accepts both a baudrate and a bit config. Previously, both of these contained a complete implementation, but now the former just calls the latter, explicitely passing the default 8N1 configuration. Technically, this causes a small change: Before the UCSRC register was untouched when calling begin(baud), now it is explicitely initialized with 8N1. However, since this is the default configuration for at least the Uno and the Mega (didn't check any others), probably for all avrs, this shouldn't effectively change anything. Given that the Arduino documentation also documents this as the default when none is passed, explicitly setting it is probably a good idea in any case.
2013-09-09Fixed HardwareSerial bug introduced in 1.5.3.Cristian Maglie
Fixes #1568
2013-07-26Move buffers into HardwareSerialMatthijs Kooijman
This removes the need for doing an extra pointer dereference on every access to the buffers, shrinking the code by around 100 bytes. The members for these buffers must be public for now, since the interrupt handlers also need to access them. These can later be made private again. Furthermore, the struct ring_buffer was removed. This allows the all head and tail pointers to be put into the HardwareSerial struct before the actual buffers, so the pointers all end up in the first 32 bytes of the struct that can be accessed using a single instruction (ldd). References: #947
2013-07-26Use uint8_t for HardwareSerial ringbuffer pointersMatthijs Kooijman
Since the buffers aren't bigger than 64 bytes, these values can be smaller. This saves a few bytes of ram, but also saves around 50 bytes of program space, since the values can now be loaded using a single instruction. To prevent problems when people manually increase the buffer size, a compile-time check is added. Closes: #1078
2013-03-29Fix deprecated ISR names for ATmega8.Cristian Maglie
See #881
2013-03-29Removed deprecated interrupt handlersCristian Maglie
Fixes #831 #881 #955 #1123 #1140
2012-11-29Clarifying comment.David A. Mellis
2012-11-29Moving TXCO definition into HardwareSerial.cpp from HardwareSerial.h.David A. Mellis
Otherwise, you get an error when compiling for processors with no serial port because the header file is always compiled. See, for an example of the problem: https://github.com/damellis/attiny/issues/8
2012-08-30Changing setting of the UMSELn bits (for UART mode) and serial config values.David A. Mellis
Before, the UMSELn1 bit was being to set to 1, putting the UART into a reserved mode. Now, we only set the high (0x80) bit to 1 for the ATmega8, which is needed to access UCSRnC (whose i/o address is shared with UBRRH). Also, no longer bitwise-or the new config with the existing register value, because we're actually configuring all the settings in the register. (We're not using UCPOL, but it's supposed to be 0 in asynchronous mode.)
2012-08-30Merge pull request #109 from Alarus/masterDavid A. Mellis
Serial.begin() parameter to set data bits, parity, stop bits.
2012-08-28Serial.flush() waits for last character to be transmitted (michele.mazzucchi)David A. Mellis
http://code.google.com/p/arduino/issues/detail?id=871
2012-08-14Update hardware/arduino/cores/arduino/HardwareSerial.cppAlarus
New Serial.begin(baud, config);
2012-08-14Update hardware/arduino/cores/arduino/HardwareSerial.cppAlarus
New Serial.begin(baud, config);
2012-08-12Update hardware/arduino/cores/arduino/HardwareSerial.cppAlarus
Adding advanced begin (); with the ability to specify the length of bits, parity, stop bits.
2012-08-12Update hardware/arduino/cores/arduino/HardwareSerial.cppAlarus
Adding advanced begin (); with the ability to specify the length of bits, parity, stop bits.
2012-08-12Update hardware/arduino/cores/arduino/HardwareSerial.cppAlarus
Adding advanced begin (); with the ability to specify the length of bits, parity, stop bits.
2012-04-01added Boolean operators to HardwareSerial and CDC to test whether the port ↵Zach Eveland
is ready to send data. Mostly useful for Leonardo - simple way to test whether the port is actually opened by an application and ready to receive data. For Serial objects attached to real UARTs always returns true.
2012-02-03Making head and tail unsigned to avoid division in serial ISR.David A. Mellis
http://code.google.com/p/arduino/issues/detail?id=776
2011-10-10Fixing more warnings (Paul Stoffregen).David A. Mellis
2011-09-08Merge branch 'new-extension' of https://github.com/arduino/Arduino into ↵Zach Eveland
new-extension Conflicts: build/linux/dist/tools/avrdude.conf
2011-09-07Changing to a simpler mental model for serialEvent (Paul Stoffregen).David A. Mellis
http://code.google.com/p/arduino/issues/detail?id=626
2011-09-05changed baudrate for auto-reset-and-upload back to 1200 bps. specified ↵Zach Eveland
arduino protocol for Leonardo avrdude upload.
2011-09-05Merge branch 'new-extension' of https://github.com/arduino/Arduino into ↵Zach Eveland
new-extension Conflicts: build/macosx/dist/tools-universal.zip build/windows/avr_tools.zip hardware/arduino/cores/arduino/HardwareSerial.cpp
2011-08-31Moving serialEvent() calls from RX interrupts to main for() loop (after loop()).David A. Mellis
http://code.google.com/p/arduino/issues/detail?id=584
2011-08-30Merge branch 'mainline' into new-extensionZach Eveland
2011-08-26Moving write errors out of return value into separate API methods.David A. Mellis
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
2011-08-26Changing from long to ssize_t (int) for write(), print(), println() return.David A. Mellis
2011-08-23write(), print(), and println() now return number of bytes written.David A. Mellis
The type is long, and negative values indicate errors. Needs more testing. http://code.google.com/p/arduino/issues/detail?id=551
2011-08-18HW Serial on pins 0 and 1 works. Accessed by Serial1.* methodsZach Eveland
2011-08-11committed USB API, initial HardwareSerial-USBSerial integrationZach Eveland
2011-05-20Fixing 300 baud communication for serial.David A. Mellis
Because UBBR is only 12 bits, we were overflowing it at 300 baud because of the use of the U2X bit. Now we turn off U2X if it would yield a UBBR value that would overflow. Note that this breaks 300 baud communication with the computer on the Uno and Mega 2560 because the 8U2 USB-serial firmware has this same bug (and previously they cancelled each other out). Since, however, it seems more likely that people will need to use 300 baud to communicate with other (legacy) hardware than with the computer, I'm making this change. Issue for 8U2 firmware bug: http://code.google.com/p/arduino/issues/detail?id=542 http://code.google.com/p/arduino/issues/detail?id=522
2011-05-12Small optimization in HardwareSerial.David A. Mellis
begin(long) -> begin(unsigned long) Conflicts: hardware/arduino/cores/arduino/HardwareSerial.h
2011-05-07Adding serialEvent(), serialEvent1(), etc.David A. Mellis
Called from within the serial receive interrupt. These are implemented as an empty weak function in the core that be overridden by the user's sketch. http://code.google.com/p/arduino/issues/detail?id=263
2011-05-07Refactoring the UART0 / USART0 receive interrupt handler.David A. Mellis
2011-05-07Changing Serial.flush() to write outgoing data, not drop incoming data.David A. Mellis
This brings it in line with most other uses of flush(), both in and out of Arduino. http://code.google.com/p/arduino/issues/detail?id=497
2011-03-06Flushing outgoing and incoming data in Serial.end().David A. Mellis
That is, waiting for outgoing data to transmit and dropping any received data.
2011-03-06Fixing race condition in Serial write (Brian Cook).David A. Mellis
2011-03-05Implemented serial transmit buffering.David A. Mellis
Now Serial.write() places characters in the transmit buffer, and the data register empty interrupt reads and transmit them. Based loosely on the implementation here: ftp://wookey.org.uk/arduino. http://code.google.com/p/arduino/issues/detail?id=262
2011-03-01Moving wiring.h contents into Arduino.h.David A. Mellis
2010-11-11Cast to encourage optimization of Serial ring buffer index calculations.David A. Mellis
http://code.google.com/p/arduino/issues/detail?id=391
2010-11-11Changing baud rate calculation to always use double speed mode except for ↵David A. Mellis
57600 baud at 16 MHz. http://code.google.com/p/arduino/issues/detail?id=394
2010-10-17Making HardwareSerial tests register-based, not CPU-based.David A. Mellis
Mark Sproul's patches, via Christian Maglie. http://code.google.com/p/arduino/issues/detail?id=315
2010-09-081280 -> 1280/2560.David A. Mellis
2010-08-02changing available() to return an int (because the Ethernet Client class or ↵David A. Mellis
another stream might need more than 255 bytes).
2010-07-04Adding a peek() function to Stream and HardwareSerial (Serial).David A. Mellis
2010-07-04Adding support for printing Strings to the Print class.David A. Mellis
2009-12-23Adding Serial.end().David A. Mellis
2009-11-21Improving third-party hardware support:David A. Mellis
- moving back to multple cores per platform - using target instead of platform - moving per-board and per-programmer preferences out of Preferences.java and into a new Target class - adding a new "target" preference - support for platform:value values in board preferences for bootloader path and core - XXX: need to support platform:value syntax for board upload.using preferences.
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