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-rw-r--r--cores/arduino/HardwareSerial.cpp54
1 files changed, 7 insertions, 47 deletions
diff --git a/cores/arduino/HardwareSerial.cpp b/cores/arduino/HardwareSerial.cpp
index 2307735..2d6d25f 100644
--- a/cores/arduino/HardwareSerial.cpp
+++ b/cores/arduino/HardwareSerial.cpp
@@ -18,7 +18,7 @@
Modified 23 November 2006 by David A. Mellis
Modified 28 September 2010 by Mark Sproul
- Modified 12 August 2012 by Alarus
+ Modified 14 August 2012 by Alarus
*/
#include <stdlib.h>
@@ -356,10 +356,10 @@ try_again:
cbi(*_ucsrb, _udrie);
}
-void HardwareSerial::begin(unsigned long baud, byte databits, char parity, byte stopbits)
+void HardwareSerial::begin(unsigned long baud, byte config)
{
uint16_t baud_setting;
- uint8_t config_setting;
+ uint8_t current_config;
bool use_u2x = true;
#if F_CPU == 16000000UL
@@ -392,49 +392,10 @@ try_again:
*_ubrrl = baud_setting;
//set number of data bits
- config_setting = *_ubrrh;
- config_setting = *_ucsrc;
- if (databits == 5)
- {
- config_setting |= B10000000;
- }
- else if (databits == 6)
- {
- config_setting |= B10000010;
- }
- else if (databits == 7)
- {
- config_setting |= B10000100;
- }
- else // (databits == 8)
- {
- config_setting |= B10000110;
- }
-
- //set parity
- if ((parity == 'O')|(parity == 'o'))
- {
- config_setting |= B10110000;
- }
- else if ((parity == 'E')|(parity == 'e'))
- {
- config_setting |= B10100000;
- }
- else // ((parity == 'N')|(parity == 'n')))
- {
- config_setting |= B10000000;
- }
-
- //set number of stop bits
- if (stopbits == 2)
- {
- config_setting |= B10001000;
- }
- else // (stopbits == 1)
- {
- config_setting |= B10000000;
- }
- *_ucsrc = config_setting;
+ current_config = *_ubrrh;
+ current_config = *_ucsrc;
+ current_config |= config;
+ *_ucsrc = current_config;
sbi(*_ucsrb, _rxen);
sbi(*_ucsrb, _txen);
@@ -534,4 +495,3 @@ HardwareSerial::operator bool() {
#endif
#endif // whole file
-