mirror of
https://github.com/arduino/Arduino.git
synced 2024-12-01 12:24:14 +01:00
Update hardware/arduino/cores/arduino/HardwareSerial.cpp
Adding advanced begin (); with the ability to specify the length of bits, parity, stop bits.
This commit is contained in:
Alarus
parent
0b44fb7f73
commit
c8490c9f7b
@ -18,6 +18,7 @@
|
||||
|
||||
Modified 23 November 2006 by David A. Mellis
|
||||
Modified 28 September 2010 by Mark Sproul
|
||||
Modified 12 August 2012 by Alarus
|
||||
*/
|
||||
|
||||
#include <stdlib.h>
|
||||
@ -109,13 +110,22 @@ inline void store_char(unsigned char c, ring_buffer *buffer)
|
||||
#endif
|
||||
{
|
||||
#if defined(UDR0)
|
||||
unsigned char c = UDR0;
|
||||
if (bit_is_clear(UCSR0A, UPE0)) {
|
||||
unsigned char c = UDR0;
|
||||
store_char(c, &rx_buffer);
|
||||
} else {
|
||||
unsigned char c = UDR0;
|
||||
};
|
||||
#elif defined(UDR)
|
||||
unsigned char c = UDR;
|
||||
if (bit_is_clear(UCSRA, PE)) {
|
||||
unsigned char c = UDR;
|
||||
store_char(c, &rx_buffer);
|
||||
} else {
|
||||
unsigned char c = UDR;
|
||||
};
|
||||
#else
|
||||
#error UDR not defined
|
||||
#endif
|
||||
store_char(c, &rx_buffer);
|
||||
}
|
||||
#endif
|
||||
#endif
|
||||
@ -126,8 +136,12 @@ inline void store_char(unsigned char c, ring_buffer *buffer)
|
||||
#define serialEvent1_implemented
|
||||
SIGNAL(USART1_RX_vect)
|
||||
{
|
||||
unsigned char c = UDR1;
|
||||
store_char(c, &rx_buffer1);
|
||||
if (bit_is_clear(UCSR1A, UPE1)) {
|
||||
unsigned char c = UDR1;
|
||||
store_char(c, &rx_buffer1);
|
||||
} else {
|
||||
unsigned char c = UDR1;
|
||||
};
|
||||
}
|
||||
#elif defined(SIG_USART1_RECV)
|
||||
#error SIG_USART1_RECV
|
||||
@ -139,8 +153,12 @@ inline void store_char(unsigned char c, ring_buffer *buffer)
|
||||
#define serialEvent2_implemented
|
||||
SIGNAL(USART2_RX_vect)
|
||||
{
|
||||
unsigned char c = UDR2;
|
||||
store_char(c, &rx_buffer2);
|
||||
if (bit_is_clear(UCSR2A, UPE2)) {
|
||||
unsigned char c = UDR2;
|
||||
store_char(c, &rx_buffer2);
|
||||
} else {
|
||||
unsigned char c = UDR2;
|
||||
};
|
||||
}
|
||||
#elif defined(SIG_USART2_RECV)
|
||||
#error SIG_USART2_RECV
|
||||
@ -152,8 +170,12 @@ inline void store_char(unsigned char c, ring_buffer *buffer)
|
||||
#define serialEvent3_implemented
|
||||
SIGNAL(USART3_RX_vect)
|
||||
{
|
||||
unsigned char c = UDR3;
|
||||
store_char(c, &rx_buffer3);
|
||||
if (bit_is_clear(UCSR3A, UPE3)) {
|
||||
unsigned char c = UDR3;
|
||||
store_char(c, &rx_buffer3);
|
||||
} else {
|
||||
unsigned char c = UDR3;
|
||||
};
|
||||
}
|
||||
#elif defined(SIG_USART3_RECV)
|
||||
#error SIG_USART3_RECV
|
||||
@ -274,7 +296,7 @@ ISR(USART3_UDRE_vect)
|
||||
HardwareSerial::HardwareSerial(ring_buffer *rx_buffer, ring_buffer *tx_buffer,
|
||||
volatile uint8_t *ubrrh, volatile uint8_t *ubrrl,
|
||||
volatile uint8_t *ucsra, volatile uint8_t *ucsrb,
|
||||
volatile uint8_t *udr,
|
||||
volatile uint8_t *ucsrc, volatile uint8_t *udr,
|
||||
uint8_t rxen, uint8_t txen, uint8_t rxcie, uint8_t udrie, uint8_t u2x)
|
||||
{
|
||||
_rx_buffer = rx_buffer;
|
||||
@ -283,6 +305,7 @@ HardwareSerial::HardwareSerial(ring_buffer *rx_buffer, ring_buffer *tx_buffer,
|
||||
_ubrrl = ubrrl;
|
||||
_ucsra = ucsra;
|
||||
_ucsrb = ucsrb;
|
||||
_ucsrc = ucsrc;
|
||||
_udr = udr;
|
||||
_rxen = rxen;
|
||||
_txen = txen;
|
||||
@ -333,6 +356,92 @@ try_again:
|
||||
cbi(*_ucsrb, _udrie);
|
||||
}
|
||||
|
||||
void HardwareSerial::begin(unsigned long baud, byte databits, char parity, byte stopbits)
|
||||
{
|
||||
uint16_t baud_setting;
|
||||
uint8_t config_setting;
|
||||
bool use_u2x = true;
|
||||
|
||||
#if F_CPU == 16000000UL
|
||||
// hardcoded exception for compatibility with the bootloader shipped
|
||||
// with the Duemilanove and previous boards and the firmware on the 8U2
|
||||
// on the Uno and Mega 2560.
|
||||
if (baud == 57600) {
|
||||
use_u2x = false;
|
||||
}
|
||||
#endif
|
||||
|
||||
try_again:
|
||||
|
||||
if (use_u2x) {
|
||||
*_ucsra = 1 << _u2x;
|
||||
baud_setting = (F_CPU / 4 / baud - 1) / 2;
|
||||
} else {
|
||||
*_ucsra = 0;
|
||||
baud_setting = (F_CPU / 8 / baud - 1) / 2;
|
||||
}
|
||||
|
||||
if ((baud_setting > 4095) && use_u2x)
|
||||
{
|
||||
use_u2x = false;
|
||||
goto try_again;
|
||||
}
|
||||
|
||||
// assign the baud_setting, a.k.a. ubbr (USART Baud Rate Register)
|
||||
*_ubrrh = baud_setting >> 8;
|
||||
*_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
|
||||
|
||||
sbi(*_ucsrb, _rxen);
|
||||
sbi(*_ucsrb, _txen);
|
||||
sbi(*_ucsrb, _rxcie);
|
||||
cbi(*_ucsrb, _udrie);
|
||||
}
|
||||
|
||||
void HardwareSerial::end()
|
||||
{
|
||||
// wait for transmission of outgoing data
|
||||
@ -405,9 +514,9 @@ HardwareSerial::operator bool() {
|
||||
// Preinstantiate Objects //////////////////////////////////////////////////////
|
||||
|
||||
#if defined(UBRRH) && defined(UBRRL)
|
||||
HardwareSerial Serial(&rx_buffer, &tx_buffer, &UBRRH, &UBRRL, &UCSRA, &UCSRB, &UDR, RXEN, TXEN, RXCIE, UDRIE, U2X);
|
||||
HardwareSerial Serial(&rx_buffer, &tx_buffer, &UBRRH, &UBRRL, &UCSRA, &UCSRB, &UCSRC, &UDR, RXEN, TXEN, RXCIE, UDRIE, U2X);
|
||||
#elif defined(UBRR0H) && defined(UBRR0L)
|
||||
HardwareSerial Serial(&rx_buffer, &tx_buffer, &UBRR0H, &UBRR0L, &UCSR0A, &UCSR0B, &UDR0, RXEN0, TXEN0, RXCIE0, UDRIE0, U2X0);
|
||||
HardwareSerial Serial(&rx_buffer, &tx_buffer, &UBRR0H, &UBRR0L, &UCSR0A, &UCSR0B, &UCSR0C, &UDR0, RXEN0, TXEN0, RXCIE0, UDRIE0, U2X0);
|
||||
#elif defined(USBCON)
|
||||
// do nothing - Serial object and buffers are initialized in CDC code
|
||||
#else
|
||||
@ -415,13 +524,13 @@ HardwareSerial::operator bool() {
|
||||
#endif
|
||||
|
||||
#if defined(UBRR1H)
|
||||
HardwareSerial Serial1(&rx_buffer1, &tx_buffer1, &UBRR1H, &UBRR1L, &UCSR1A, &UCSR1B, &UDR1, RXEN1, TXEN1, RXCIE1, UDRIE1, U2X1);
|
||||
HardwareSerial Serial1(&rx_buffer1, &tx_buffer1, &UBRR1H, &UBRR1L, &UCSR1A, &UCSR1B, &UCSR1C, &UDR1, RXEN1, TXEN1, RXCIE1, UDRIE1, U2X1);
|
||||
#endif
|
||||
#if defined(UBRR2H)
|
||||
HardwareSerial Serial2(&rx_buffer2, &tx_buffer2, &UBRR2H, &UBRR2L, &UCSR2A, &UCSR2B, &UDR2, RXEN2, TXEN2, RXCIE2, UDRIE2, U2X2);
|
||||
HardwareSerial Serial2(&rx_buffer2, &tx_buffer2, &UBRR2H, &UBRR2L, &UCSR2A, &UCSR2B, &UCSR2C, &UDR2, RXEN2, TXEN2, RXCIE2, UDRIE2, U2X2);
|
||||
#endif
|
||||
#if defined(UBRR3H)
|
||||
HardwareSerial Serial3(&rx_buffer3, &tx_buffer3, &UBRR3H, &UBRR3L, &UCSR3A, &UCSR3B, &UDR3, RXEN3, TXEN3, RXCIE3, UDRIE3, U2X3);
|
||||
HardwareSerial Serial3(&rx_buffer3, &tx_buffer3, &UBRR3H, &UBRR3L, &UCSR3A, &UCSR3B, &UCSR3C, &UDR3, RXEN3, TXEN3, RXCIE3, UDRIE3, U2X3);
|
||||
#endif
|
||||
|
||||
#endif // whole file
|
||||
|
||||
Loading…
Reference in New Issue
Block a user