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Diffstat (limited to 'keyboards/bioi/usart.c')
| -rw-r--r-- | keyboards/bioi/usart.c | 1522 |
1 files changed, 0 insertions, 1522 deletions
diff --git a/keyboards/bioi/usart.c b/keyboards/bioi/usart.c deleted file mode 100644 index f37845e5c6..0000000000 --- a/keyboards/bioi/usart.c +++ /dev/null @@ -1,1522 +0,0 @@ -/************************************************************************* - - Title: Interrupt UART library with receive/transmit circular buffers - Author: Andy Gock - Software: AVR-GCC 4.1, AVR Libc 1.4 - Hardware: any AVR with built-in UART, tested on AT90S8515 & ATmega8 at 4 Mhz - License: GNU General Public License - Usage: see README.md and Doxygen manual - - Based on original library by Peter Fluery, Tim Sharpe, Nicholas Zambetti. - - https://github.com/andygock/avr-uart - - Updated UART library (this one) by Andy Gock - https://github.com/andygock/avr-uart - - Based on updated UART library (this one) by Tim Sharpe - http://beaststwo.org/avr-uart/index.shtml - - Based on original library by Peter Fluery - http://homepage.hispeed.ch/peterfleury/avr-software.html - -*************************************************************************/ - -/************************************************************************* - -LICENSE: - Copyright (C) 2012 Andy Gock - Copyright (C) 2006 Peter Fleury - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2 of the License, or - any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - -*************************************************************************/ - -/************************************************************************ -uart_available, uart_flush, uart1_available, and uart1_flush functions -were adapted from the Arduino HardwareSerial.h library by Tim Sharpe on -11 Jan 2009. The license info for HardwareSerial.h is as follows: - - HardwareSerial.cpp - Hardware serial library for Wiring - Copyright (c) 2006 Nicholas Zambetti. All right reserved. - - This library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - This library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with this library; if not, write to the Free Software - Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - - Modified 23 November 2006 by David A. Mellis -************************************************************************/ - -/************************************************************************ -Changelog for modifications made by Tim Sharpe, starting with the current - library version on his Web site as of 05/01/2009. - -Date Description -========================================================================= -05/11/2009 Changed all existing UARTx_RECEIVE_INTERRUPT and UARTx_TRANSMIT_INTERRUPT - macros to use the "_vect" format introduced in AVR-Libc - v1.4.0. Had to split the 3290 and 6490 out of their existing - macro due to an inconsistency in the UART0_RECEIVE_INTERRUPT - vector name (seems like a typo: USART_RX_vect for the 3290/6490 - vice USART0_RX_vect for the others in the macro). - Verified all existing macro register names against the device - header files in AVR-Libc v1.6.6 to catch any inconsistencies. -05/12/2009 Added support for 48P, 88P, 168P, and 328P by adding them to the - existing 48/88/168 macro. - Added Arduino-style available() and flush() functions for both - supported UARTs. Really wanted to keep them out of the library, so - that it would be as close as possible to Peter Fleury's original - library, but has scoping issues accessing internal variables from - another program. Go C! -05/13/2009 Changed Interrupt Service Routine label from the old "SIGNAL" to - the "ISR" format introduced in AVR-Libc v1.4.0. - -************************************************************************/ - -#include <avr/io.h> -#include <avr/interrupt.h> -#include <avr/pgmspace.h> -#include <util/atomic.h> -#include "usart.h" - -/* - * constants and macros - */ - -/* size of RX/TX buffers */ -#define UART_RX0_BUFFER_MASK (UART_RX0_BUFFER_SIZE - 1) -#define UART_RX1_BUFFER_MASK (UART_RX1_BUFFER_SIZE - 1) -#define UART_RX2_BUFFER_MASK (UART_RX2_BUFFER_SIZE - 1) -#define UART_RX3_BUFFER_MASK (UART_RX3_BUFFER_SIZE - 1) - -#define UART_TX0_BUFFER_MASK (UART_TX0_BUFFER_SIZE - 1) -#define UART_TX1_BUFFER_MASK (UART_TX1_BUFFER_SIZE - 1) -#define UART_TX2_BUFFER_MASK (UART_TX2_BUFFER_SIZE - 1) -#define UART_TX3_BUFFER_MASK (UART_TX3_BUFFER_SIZE - 1) - -#if (UART_RX0_BUFFER_SIZE & UART_RX0_BUFFER_MASK) - #error RX0 buffer size is not a power of 2 -#endif -#if (UART_TX0_BUFFER_SIZE & UART_TX0_BUFFER_MASK) - #error TX0 buffer size is not a power of 2 -#endif - -#if (UART_RX1_BUFFER_SIZE & UART_RX1_BUFFER_MASK) - #error RX1 buffer size is not a power of 2 -#endif -#if (UART_TX1_BUFFER_SIZE & UART_TX1_BUFFER_MASK) - #error TX1 buffer size is not a power of 2 -#endif - -#if (UART_RX2_BUFFER_SIZE & UART_RX2_BUFFER_MASK) - #error RX2 buffer size is not a power of 2 -#endif -#if (UART_TX2_BUFFER_SIZE & UART_TX2_BUFFER_MASK) - #error TX2 buffer size is not a power of 2 -#endif - -#if (UART_RX3_BUFFER_SIZE & UART_RX3_BUFFER_MASK) - #error RX3 buffer size is not a power of 2 -#endif -#if (UART_TX3_BUFFER_SIZE & UART_TX3_BUFFER_MASK) - #error TX3 buffer size is not a power of 2 -#endif - -#if defined(__AVR_AT90S2313__) \ - || defined(__AVR_AT90S4414__) || defined(__AVR_AT90S4434__) \ - || defined(__AVR_AT90S8515__) || defined(__AVR_AT90S8535__) \ - || defined(__AVR_ATmega103__) - /* old AVR classic or ATmega103 with one UART */ - #define AT90_UART - #define UART0_RECEIVE_INTERRUPT UART_RX_vect - #define UART0_TRANSMIT_INTERRUPT UART_UDRE_vect - #define UART0_STATUS USR - #define UART0_CONTROL UCR - #define UART0_DATA UDR - #define UART0_UDRIE UDRIE -#elif defined(__AVR_AT90S2333__) || defined(__AVR_AT90S4433__) - /* old AVR classic with one UART */ - #define AT90_UART - #define UART0_RECEIVE_INTERRUPT UART_RX_vect - #define UART0_TRANSMIT_INTERRUPT UART_UDRE_vect - #define UART0_STATUS UCSRA - #define UART0_CONTROL UCSRB - #define UART0_DATA UDR - #define UART0_UDRIE UDRIE -#elif defined(__AVR_ATmega8__) || defined(__AVR_ATmega16__) || defined(__AVR_ATmega32__) \ - || defined(__AVR_ATmega323__) - /* ATmega with one USART */ - #define ATMEGA_USART - #define UART0_RECEIVE_INTERRUPT USART_RXC_vect - #define UART0_TRANSMIT_INTERRUPT USART_UDRE_vect - #define UART0_STATUS UCSRA - #define UART0_CONTROL UCSRB - #define UART0_DATA UDR - #define UART0_UDRIE UDRIE -#elif defined(__AVR_ATmega8U2__) || defined(__AVR_ATmega16U2__) || defined(__AVR_ATmega16U4__) || \ - defined(__AVR_ATmega32U2__) || defined(__AVR_ATmega32U4__) || defined(__AVR_ATmega32U6__) - /* ATmega with one USART, but is called USART1 (untested) */ - #define ATMEGA_USART1 - #define UART1_RECEIVE_INTERRUPT USART1_RX_vect - #define UART1_TRANSMIT_INTERRUPT USART1_UDRE_vect - #define UART1_STATUS UCSR1A - #define UART1_CONTROL UCSR1B - #define UART1_DATA UDR1 - #define UART1_UDRIE UDRIE1 -#elif defined(__AVR_ATmega8515__) || defined(__AVR_ATmega8535__) - /* ATmega with one USART */ - #define ATMEGA_USART - #define UART0_RECEIVE_INTERRUPT USART_RX_vect - #define UART0_TRANSMIT_INTERRUPT USART_UDRE_vect - #define UART0_STATUS UCSRA - #define UART0_CONTROL UCSRB - #define UART0_DATA UDR - #define UART0_UDRIE UDRIE -#elif defined(__AVR_ATmega163__) - /* ATmega163 with one UART */ - #define ATMEGA_UART - #define UART0_RECEIVE_INTERRUPT UART_RX_vect - #define UART0_TRANSMIT_INTERRUPT UART_UDRE_vect - #define UART0_STATUS UCSRA - #define UART0_CONTROL UCSRB - #define UART0_DATA UDR - #define UART0_UDRIE UDRIE -#elif defined(__AVR_ATmega162__) - /* ATmega with two USART */ - #define ATMEGA_USART0 - #define ATMEGA_USART1 - #define UART0_RECEIVE_INTERRUPT USART0_RXC_vect - #define UART1_RECEIVE_INTERRUPT USART1_RXC_vect - #define UART0_TRANSMIT_INTERRUPT USART0_UDRE_vect - #define UART1_TRANSMIT_INTERRUPT USART1_UDRE_vect - #define UART0_STATUS UCSR0A - #define UART0_CONTROL UCSR0B - #define UART0_DATA UDR0 - #define UART0_UDRIE UDRIE0 - #define UART1_STATUS UCSR1A - #define UART1_CONTROL UCSR1B - #define UART1_DATA UDR1 - #define UART1_UDRIE UDRIE1 -#elif defined(__AVR_ATmega64__) || defined(__AVR_ATmega128__) - /* ATmega with two USART */ - #define ATMEGA_USART0 - #define ATMEGA_USART1 - #define UART0_RECEIVE_INTERRUPT USART0_RX_vect - #define UART1_RECEIVE_INTERRUPT USART1_RX_vect - #define UART0_TRANSMIT_INTERRUPT USART0_UDRE_vect - #define UART1_TRANSMIT_INTERRUPT USART1_UDRE_vect - #define UART0_STATUS UCSR0A - #define UART0_CONTROL UCSR0B - #define UART0_DATA UDR0 - #define UART0_UDRIE UDRIE0 - #define UART1_STATUS UCSR1A - #define UART1_CONTROL UCSR1B - #define UART1_DATA UDR1 - #define UART1_UDRIE UDRIE1 -#elif defined(__AVR_ATmega161__) - /* ATmega with UART */ - #error "AVR ATmega161 currently not supported by this libaray !" -#elif defined(__AVR_ATmega169__) - /* ATmega with one USART */ - #define ATMEGA_USART - #define UART0_RECEIVE_INTERRUPT USART0_RX_vect - #define UART0_TRANSMIT_INTERRUPT USART0_UDRE_vect - #define UART0_STATUS UCSRA - #define UART0_CONTROL UCSRB - #define UART0_DATA UDR - #define UART0_UDRIE UDRIE -#elif defined(__AVR_ATmega48__) ||defined(__AVR_ATmega88__) || defined(__AVR_ATmega168__) || \ - defined(__AVR_ATmega48P__) ||defined(__AVR_ATmega88P__) || defined(__AVR_ATmega168P__) || \ - defined(__AVR_ATmega328P__) - /* TLS-Added 48P/88P/168P/328P */ - /* ATmega with one USART */ - #define ATMEGA_USART0 - #define UART0_RECEIVE_INTERRUPT USART_RX_vect - #define UART0_TRANSMIT_INTERRUPT USART_UDRE_vect - #define UART0_STATUS UCSR0A - #define UART0_CONTROL UCSR0B - #define UART0_DATA UDR0 - #define UART0_UDRIE UDRIE0 -#elif defined(__AVR_ATtiny2313__) || defined(__AVR_ATtiny2313A__) || defined(__AVR_ATtiny4313__) - #define ATMEGA_USART - #define UART0_RECEIVE_INTERRUPT USART_RX_vect - #define UART0_TRANSMIT_INTERRUPT USART_UDRE_vect - #define UART0_STATUS UCSRA - #define UART0_CONTROL UCSRB - #define UART0_DATA UDR - #define UART0_UDRIE UDRIE -#elif defined(__AVR_ATmega329__) ||\ - defined(__AVR_ATmega649__) ||\ - defined(__AVR_ATmega325__) ||defined(__AVR_ATmega3250__) ||\ - defined(__AVR_ATmega645__) ||defined(__AVR_ATmega6450__) - /* ATmega with one USART */ - #define ATMEGA_USART0 - #define UART0_RECEIVE_INTERRUPT USART0_RX_vect - #define UART0_TRANSMIT_INTERRUPT USART0_UDRE_vect - #define UART0_STATUS UCSR0A - #define UART0_CONTROL UCSR0B - #define UART0_DATA UDR0 - #define UART0_UDRIE UDRIE0 -#elif defined(__AVR_ATmega3290__) ||\ - defined(__AVR_ATmega6490__) - /* TLS-Separated these two from the previous group because of inconsistency in the USART_RX */ - /* ATmega with one USART */ - #define ATMEGA_USART0 - #define UART0_RECEIVE_INTERRUPT USART_RX_vect - #define UART0_TRANSMIT_INTERRUPT USART0_UDRE_vect - #define UART0_STATUS UCSR0A - #define UART0_CONTROL UCSR0B - #define UART0_DATA UDR0 - #define UART0_UDRIE UDRIE0 -#elif defined(__AVR_ATmega2560__) || defined(__AVR_ATmega1280__) || defined(__AVR_ATmega640__) - /* ATmega with four USART */ - #define ATMEGA_USART0 - #define ATMEGA_USART1 - #define ATMEGA_USART2 - #define ATMEGA_USART3 - #define UART0_RECEIVE_INTERRUPT USART0_RX_vect - #define UART1_RECEIVE_INTERRUPT USART1_RX_vect - #define UART2_RECEIVE_INTERRUPT USART2_RX_vect - #define UART3_RECEIVE_INTERRUPT USART3_RX_vect - #define UART0_TRANSMIT_INTERRUPT USART0_UDRE_vect - #define UART1_TRANSMIT_INTERRUPT USART1_UDRE_vect - #define UART2_TRANSMIT_INTERRUPT USART2_UDRE_vect - #define UART3_TRANSMIT_INTERRUPT USART3_UDRE_vect - #define UART0_STATUS UCSR0A - #define UART0_CONTROL UCSR0B - #define UART0_DATA UDR0 - #define UART0_UDRIE UDRIE0 - #define UART1_STATUS UCSR1A - #define UART1_CONTROL UCSR1B - #define UART1_DATA UDR1 - #define UART1_UDRIE UDRIE1 - #define UART2_STATUS UCSR2A - #define UART2_CONTROL UCSR2B - #define UART2_DATA UDR2 - #define UART2_UDRIE UDRIE2 - #define UART3_STATUS UCSR3A - #define UART3_CONTROL UCSR3B - #define UART3_DATA UDR3 - #define UART3_UDRIE UDRIE3 -#elif defined(__AVR_ATmega644__) - /* ATmega with one USART */ - #define ATMEGA_USART0 - #define UART0_RECEIVE_INTERRUPT USART0_RX_vect - #define UART0_TRANSMIT_INTERRUPT USART0_UDRE_vect - #define UART0_STATUS UCSR0A - #define UART0_CONTROL UCSR0B - #define UART0_DATA UDR0 - #define UART0_UDRIE UDRIE0 -#elif defined(__AVR_ATmega164P__) || defined(__AVR_ATmega324P__) || defined(__AVR_ATmega644P__) || \ - defined(__AVR_ATmega1284P__) - /* ATmega with two USART */ - #define ATMEGA_USART0 - #define ATMEGA_USART1 - #define UART0_RECEIVE_INTERRUPT USART0_RX_vect - #define UART1_RECEIVE_INTERRUPT USART1_RX_vect - #define UART0_TRANSMIT_INTERRUPT USART0_UDRE_vect - #define UART1_TRANSMIT_INTERRUPT USART1_UDRE_vect - #define UART0_STATUS UCSR0A - #define UART0_CONTROL UCSR0B - #define UART0_DATA UDR0 - #define UART0_UDRIE UDRIE0 - #define UART1_STATUS UCSR1A - #define UART1_CONTROL UCSR1B - #define UART1_DATA UDR1 - #define UART1_UDRIE UDRIE1 -#else - #error "no UART definition for MCU available" -#endif - -/* - * Module global variables - */ - -#if defined(USART0_ENABLED) - #if defined(ATMEGA_USART) || defined(ATMEGA_USART0) - static volatile uint8_t UART_TxBuf[UART_TX0_BUFFER_SIZE]; - static volatile uint8_t UART_RxBuf[UART_RX0_BUFFER_SIZE]; - - #if defined(USART0_LARGE_BUFFER) - static volatile uint16_t UART_TxHead; - static volatile uint16_t UART_TxTail; - static volatile uint16_t UART_RxHead; - static volatile uint16_t UART_RxTail; - static volatile uint8_t UART_LastRxError; - #else - static volatile uint8_t UART_TxHead; - static volatile uint8_t UART_TxTail; - static volatile uint8_t UART_RxHead; - static volatile uint8_t UART_RxTail; - static volatile uint8_t UART_LastRxError; - #endif - - #endif -#endif - -#if defined(USART1_ENABLED) - #if defined(ATMEGA_USART1) - static volatile uint8_t UART1_TxBuf[UART_TX1_BUFFER_SIZE]; - static volatile uint8_t UART1_RxBuf[UART_RX1_BUFFER_SIZE]; - - #if defined(USART1_LARGE_BUFFER) - static volatile uint16_t UART1_TxHead; - static volatile uint16_t UART1_TxTail; - static volatile uint16_t UART1_RxHead; - static volatile uint16_t UART1_RxTail; - static volatile uint8_t UART1_LastRxError; - #else - static volatile uint8_t UART1_TxHead; - static volatile uint8_t UART1_TxTail; - static volatile uint8_t UART1_RxHead; - static volatile uint8_t UART1_RxTail; - static volatile uint8_t UART1_LastRxError; - #endif - #endif -#endif - -#if defined(USART2_ENABLED) - #if defined(ATMEGA_USART2) - static volatile uint8_t UART2_TxBuf[UART_TX2_BUFFER_SIZE]; - static volatile uint8_t UART2_RxBuf[UART_RX2_BUFFER_SIZE]; - - #if defined(USART2_LARGE_BUFFER) - static volatile uint16_t UART2_TxHead; - static volatile uint16_t UART2_TxTail; - static volatile uint16_t UART2_RxHead; - static volatile uint16_t UART2_RxTail; - static volatile uint8_t UART2_LastRxError; - #else - static volatile uint8_t UART2_TxHead; - static volatile uint8_t UART2_TxTail; - static volatile uint8_t UART2_RxHead; - static volatile uint8_t UART2_RxTail; - static volatile uint8_t UART2_LastRxError; - #endif - #endif -#endif - -#if defined(USART3_ENABLED) - #if defined(ATMEGA_USART3) - static volatile uint8_t UART3_TxBuf[UART_TX3_BUFFER_SIZE]; - static volatile uint8_t UART3_RxBuf[UART_RX3_BUFFER_SIZE]; - - #if defined(USART3_LARGE_BUFFER) - static volatile uint16_t UART3_TxHead; - static volatile uint16_t UART3_TxTail; - static volatile uint16_t UART3_RxHead; - static volatile uint16_t UART3_RxTail; - static volatile uint8_t UART3_LastRxError; - #else - static volatile uint8_t UART3_TxHead; - static volatile uint8_t UART3_TxTail; - static volatile uint8_t UART3_RxHead; - static volatile uint8_t UART3_RxTail; - static volatile uint8_t UART3_LastRxError; - #endif - - #endif -#endif - -#if defined(USART0_ENABLED) - -#if defined(AT90_UART) || defined(ATMEGA_USART) || defined(ATMEGA_USART0) - -ISR(UART0_RECEIVE_INTERRUPT) -/************************************************************************* -Function: UART Receive Complete interrupt -Purpose: called when the UART has received a character -**************************************************************************/ -{ - uint16_t tmphead; - uint8_t data; - uint8_t usr; - uint8_t lastRxError; - - /* read UART status register and UART data register */ - usr = UART0_STATUS; - data = UART0_DATA; - - /* */ -#if defined(AT90_UART) - lastRxError = (usr & (_BV(FE)|_BV(DOR))); -#elif defined(ATMEGA_USART) - lastRxError = (usr & (_BV(FE)|_BV(DOR))); -#elif defined(ATMEGA_USART0) - lastRxError = (usr & (_BV(FE0)|_BV(DOR0))); -#elif defined (ATMEGA_UART) - lastRxError = (usr & (_BV(FE)|_BV(DOR))); -#endif - - /* calculate buffer index */ - tmphead = (UART_RxHead + 1) & UART_RX0_BUFFER_MASK; - - if (tmphead == UART_RxTail) { - /* error: receive buffer overflow */ - lastRxError = UART_BUFFER_OVERFLOW >> 8; - } else { - /* store new index */ - UART_RxHead = tmphead; - /* store received data in buffer */ - UART_RxBuf[tmphead] = data; - } - UART_LastRxError = lastRxError; -} - - -ISR(UART0_TRANSMIT_INTERRUPT) -/************************************************************************* -Function: UART Data Register Empty interrupt -Purpose: called when the UART is ready to transmit the next byte -**************************************************************************/ -{ - uint16_t tmptail; - - if (UART_TxHead != UART_TxTail) { - /* calculate and store new buffer index */ - tmptail = (UART_TxTail + 1) & UART_TX0_BUFFER_MASK; - UART_TxTail = tmptail; - /* get one byte from buffer and write it to UART */ - UART0_DATA = UART_TxBuf[tmptail]; /* start transmission */ - } else { - /* tx buffer empty, disable UDRE interrupt */ - UART0_CONTROL &= ~_BV(UART0_UDRIE); - } -} - - -/************************************************************************* -Function: uart0_init() -Purpose: initialize UART and set baudrate -Input: baudrate using macro UART_BAUD_SELECT() -Returns: none -**************************************************************************/ -void uart0_init(uint16_t baudrate) -{ - ATOMIC_BLOCK(ATOMIC_FORCEON) { - UART_TxHead = 0; - UART_TxTail = 0; - UART_RxHead = 0; - UART_RxTail = 0; - } - -#if defined(AT90_UART) - /* set baud rate */ - UBRR = (uint8_t) baudrate; - - /* enable UART receiver and transmitter and receive complete interrupt */ - UART0_CONTROL = _BV(RXCIE)|_BV(RXEN)|_BV(TXEN); - -#elif defined (ATMEGA_USART) - /* Set baud rate */ - if (baudrate & 0x8000) { - UART0_STATUS = (1<<U2X); //Enable 2x speed - baudrate &= ~0x8000; - } - UBRRH = (uint8_t) (baudrate>>8); - UBRRL = (uint8_t) baudrate; - - /* Enable USART receiver and transmitter and receive complete interrupt */ - UART0_CONTROL = _BV(RXCIE)|(1<<RXEN)|(1<<TXEN); - - /* Set frame format: asynchronous, 8data, no parity, 1stop bit */ -#ifdef URSEL - UCSRC = (1<<URSEL)|(3<<UCSZ0); -#else - UCSRC = (3<<UCSZ0); -#endif - -#elif defined (ATMEGA_USART0) - /* Set baud rate */ - if (baudrate & 0x8000) { - UART0_STATUS = (1<<U2X0); //Enable 2x speed - baudrate &= ~0x8000; - } - UBRR0H = (uint8_t)(baudrate>>8); - UBRR0L = (uint8_t) baudrate; - - /* Enable USART receiver and transmitter and receive complete interrupt */ - UART0_CONTROL = _BV(RXCIE0)|(1<<RXEN0)|(1<<TXEN0); - - /* Set frame format: asynchronous, 8data, no parity, 1stop bit */ -#ifdef URSEL0 - UCSR0C = (1<<URSEL0)|(3<<UCSZ00); -#else - UCSR0C = (3<<UCSZ00); -#endif - -#elif defined (ATMEGA_UART) - /* set baud rate */ - if (baudrate & 0x8000) { - UART0_STATUS = (1<<U2X); //Enable 2x speed - baudrate &= ~0x8000; - } - UBRRHI = (uint8_t) (baudrate>>8); - UBRR = (uint8_t) baudrate; - - /* Enable UART receiver and transmitter and receive complete interrupt */ - UART0_CONTROL = _BV(RXCIE)|(1<<RXEN)|(1<<TXEN); - -#endif - -} /* uart0_init */ - - -/************************************************************************* -Function: uart0_getc() -Purpose: return byte from ringbuffer -Returns: lower byte: received byte from ringbuffer - higher byte: last receive error -**************************************************************************/ -uint16_t uart0_getc(void) -{ - uint16_t tmptail; - uint8_t data; - - ATOMIC_BLOCK(ATOMIC_FORCEON) { - if (UART_RxHead == UART_RxTail) { - return UART_NO_DATA; /* no data available */ - } - } - - /* calculate / store buffer index */ - tmptail = (UART_RxTail + 1) & UART_RX0_BUFFER_MASK; - - UART_RxTail = tmptail; - - /* get data from receive buffer */ - data = UART_RxBuf[tmptail]; - - return (UART_LastRxError << 8) + data; - -} /* uart0_getc */ - -/************************************************************************* -Function: uart0_peek() -Purpose: Returns the next byte (character) of incoming UART data without - removing it from the ring buffer. That is, successive calls to - uartN_peek() will return the same character, as will the next - call to uartN_getc() -Returns: lower byte: next byte in ring buffer - higher byte: last receive error -**************************************************************************/ -uint16_t uart0_peek(void) -{ - uint16_t tmptail; - uint8_t data; - - ATOMIC_BLOCK(ATOMIC_FORCEON) { - if (UART_RxHead == UART_RxTail) { - return UART_NO_DATA; /* no data available */ - } - } - - tmptail = (UART_RxTail + 1) & UART_RX0_BUFFER_MASK; - - /* get data from receive buffer */ - data = UART_RxBuf[tmptail]; - - return (UART_LastRxError << 8) + data; - -} /* uart0_peek */ - -/************************************************************************* -Function: uart0_putc() -Purpose: write byte to ringbuffer for transmitting via UART -Input: byte to be transmitted -Returns: none -**************************************************************************/ -void uart0_putc(uint8_t data) -{ - -#ifdef USART0_LARGE_BUFFER - uint16_t tmphead; - uint16_t txtail_tmp; - - tmphead = (UART_TxHead + 1) & UART_TX0_BUFFER_MASK; - - do { - ATOMIC_BLOCK(ATOMIC_FORCEON) { - txtail_tmp = UART_TxTail; - } - } while (tmphead == txtail_tmp); /* wait for free space in buffer */ -#else - uint16_t tmphead; - - tmphead = (UART_TxHead + 1) & UART_TX0_BUFFER_MASK; - - while (tmphead == UART_TxTail); /* wait for free space in buffer */ -#endif - - UART_TxBuf[tmphead] = data; - UART_TxHead = tmphead; - - /* enable UDRE interrupt */ - UART0_CONTROL |= _BV(UART0_UDRIE); - -} /* uart0_putc */ - - -/************************************************************************* -Function: uart0_puts() -Purpose: transmit string to UART -Input: string to be transmitted -Returns: none -**************************************************************************/ -void uart0_puts(const char *s) -{ - while (*s) { - uart0_putc(*s++); - } - -} /* uart0_puts */ - - -/************************************************************************* -Function: uart0_puts_p() -Purpose: transmit string from program memory to UART -Input: program memory string to be transmitted -Returns: none -**************************************************************************/ -void uart0_puts_p(const char *progmem_s) -{ - register char c; - - while ((c = pgm_read_byte(progmem_s++))) { - uart0_putc(c); - } - -} /* uart0_puts_p */ - - - -/************************************************************************* -Function: uart0_available() -Purpose: Determine the number of bytes waiting in the receive buffer -Input: None -Returns: Integer number of bytes in the receive buffer -**************************************************************************/ -uint16_t uart0_available(void) -{ - uint16_t ret; - - ATOMIC_BLOCK(ATOMIC_FORCEON) { - ret = (UART_RX0_BUFFER_SIZE + UART_RxHead - UART_RxTail) & UART_RX0_BUFFER_MASK; - } - return ret; -} /* uart0_available */ - -/************************************************************************* -Function: uart0_flush() -Purpose: Flush bytes waiting the receive buffer. Actually ignores them. -Input: None -Returns: None -**************************************************************************/ -void uart0_flush(void) -{ - ATOMIC_BLOCK(ATOMIC_FORCEON) { - UART_RxHead = UART_RxTail; - } -} /* uart0_flush */ - -#endif - -#endif /* defined(USART0_ENABLED) */ - -#if defined(USART1_ENABLED) - -/* - * these functions are only for ATmegas with two USART - */ -#if defined(ATMEGA_USART1) - -ISR(UART1_RECEIVE_INTERRUPT) -/************************************************************************* -Function: UART1 Receive Complete interrupt -Purpose: called when the UART1 has received a character -**************************************************************************/ -{ - uint16_t tmphead; - uint8_t data; - uint8_t usr; - uint8_t lastRxError; - - /* read UART status register and UART data register */ - usr = UART1_STATUS; - data = UART1_DATA; - - /* */ - lastRxError = (usr & (_BV(FE1)|_BV(DOR1))); - - /* calculate buffer index */ - tmphead = (UART1_RxHead + 1) & UART_RX1_BUFFER_MASK; - - if (tmphead == UART1_RxTail) { - /* error: receive buffer overflow */ - lastRxError = UART_BUFFER_OVERFLOW >> 8; - } else { - /* store new index */ - UART1_RxHead = tmphead; - /* store received data in buffer */ - UART1_RxBuf[tmphead] = data; - } - UART1_LastRxError = lastRxError; -} - - -ISR(UART1_TRANSMIT_INTERRUPT) -/************************************************************************* -Function: UART1 Data Register Empty interrupt -Purpose: called when the UART1 is ready to transmit the next byte -**************************************************************************/ -{ - uint16_t tmptail; - - if (UART1_TxHead != UART1_TxTail) { - /* calculate and store new buffer index */ - tmptail = (UART1_TxTail + 1) & UART_TX1_BUFFER_MASK; - UART1_TxTail = tmptail; - /* get one byte from buffer and write it to UART */ - UART1_DATA = UART1_TxBuf[tmptail]; /* start transmission */ - } else { - /* tx buffer empty, disable UDRE interrupt */ - UART1_CONTROL &= ~_BV(UART1_UDRIE); - } -} - - -/************************************************************************* -Function: uart1_init() -Purpose: initialize UART1 and set baudrate -Input: baudrate using macro UART_BAUD_SELECT() -Returns: none -**************************************************************************/ -void uart1_init(uint16_t baudrate) -{ - ATOMIC_BLOCK(ATOMIC_FORCEON) { - UART1_TxHead = 0; - UART1_TxTail = 0; - UART1_RxHead = 0; - UART1_RxTail = 0; - } - - /* Set baud rate */ - if (baudrate & 0x8000) { - UART1_STATUS = (1<<U2X1); //Enable 2x speed - baudrate &= ~0x8000; - } - UBRR1H = (uint8_t) (baudrate>>8); - UBRR1L = (uint8_t) baudrate; - - /* Enable USART receiver and transmitter and receive complete interrupt */ - UART1_CONTROL = _BV(RXCIE1)|(1<<RXEN1)|(1<<TXEN1); - - /* Set frame format: asynchronous, 8data, no parity, 1stop bit */ -#ifdef URSEL1 - UCSR1C = (1<<URSEL1)|(3<<UCSZ10); -#else - UCSR1C = (3<<UCSZ10); -#endif -} /* uart_init */ - - -/************************************************************************* -Function: uart1_getc() -Purpose: return byte from ringbuffer -Returns: lower byte: received byte from ringbuffer - higher byte: last receive error -**************************************************************************/ -uint16_t uart1_getc(void) -{ - uint16_t tmptail; - uint8_t data; - - ATOMIC_BLOCK(ATOMIC_FORCEON) { - if (UART1_RxHead == UART1_RxTail) { - return UART_NO_DATA; /* no data available */ - } - - /* calculate / store buffer index */ - tmptail = (UART1_RxTail + 1) & UART_RX1_BUFFER_MASK; - UART1_RxTail = tmptail; - } - - /* get data from receive buffer */ - data = UART1_RxBuf[tmptail]; - - return (UART1_LastRxError << 8) + data; - -} /* uart1_getc */ - -/************************************************************************* -Function: uart1_peek() -Purpose: Returns the next byte (character) of incoming UART data without - removing it from the ring buffer. That is, successive calls to - uartN_peek() will return the same character, as will the next - call to uartN_getc() -Returns: lower byte: next byte in ring buffer - higher byte: last receive error -**************************************************************************/ -uint16_t uart1_peek(void) -{ - uint16_t tmptail; - uint8_t data; - - ATOMIC_BLOCK(ATOMIC_FORCEON) { - if (UART1_RxHead == UART1_RxTail) { - return UART_NO_DATA; /* no data available */ - } - } - - tmptail = (UART1_RxTail + 1) & UART_RX1_BUFFER_MASK; - - /* get data from receive buffer */ - data = UART1_RxBuf[tmptail]; - - return (UART1_LastRxError << 8) + data; - -} /* uart1_peek */ - -/************************************************************************* -Function: uart1_putc() -Purpose: write byte to ringbuffer for transmitting via UART -Input: byte to be transmitted -Returns: none -**************************************************************************/ -void uart1_putc(uint8_t data) -{ - -#ifdef USART1_LARGE_BUFFER - uint16_t tmphead; - uint16_t txtail_tmp; - - tmphead = (UART1_TxHead + 1) & UART_TX1_BUFFER_MASK; - - do { - ATOMIC_BLOCK(ATOMIC_FORCEON) { - txtail_tmp = UART1_TxTail; - } - } while (tmphead == txtail_tmp); /* wait for free space in buffer */ -#else - uint16_t tmphead; - - tmphead = (UART1_TxHead + 1) & UART_TX1_BUFFER_MASK; - - while (tmphead == UART1_TxTail); /* wait for free space in buffer */ -#endif - - UART1_TxBuf[tmphead] = data; - UART1_TxHead = tmphead; - - /* enable UDRE interrupt */ - UART1_CONTROL |= _BV(UART1_UDRIE); - -} /* uart1_putc */ - - -/************************************************************************* -Function: uart1_puts() -Purpose: transmit string to UART1 -Input: string to be transmitted -Returns: none -**************************************************************************/ -void uart1_puts(const char *s) -{ - while (*s) { - uart1_putc(*s++); - } - -} /* uart1_puts */ - - -/************************************************************************* -Function: uart1_puts_p() -Purpose: transmit string from program memory to UART1 -Input: program memory string to be transmitted -Returns: none -**************************************************************************/ -void uart1_puts_p(const char *progmem_s) -{ - register char c; - - while ((c = pgm_read_byte(progmem_s++))) { - uart1_putc(c); - } - -} /* uart1_puts_p */ - - - -/************************************************************************* -Function: uart1_available() -Purpose: Determine the number of bytes waiting in the receive buffer -Input: None -Returns: Integer number of bytes in the receive buffer -**************************************************************************/ -uint16_t uart1_available(void) -{ - uint16_t ret; - - ATOMIC_BLOCK(ATOMIC_FORCEON) { - ret = (UART_RX1_BUFFER_SIZE + UART1_RxHead - UART1_RxTail) & UART_RX1_BUFFER_MASK; - } - return ret; -} /* uart1_available */ - - - -/************************************************************************* -Function: uart1_flush() -Purpose: Flush bytes waiting the receive buffer. Actually ignores them. -Input: None -Returns: None -**************************************************************************/ -void uart1_flush(void) -{ - ATOMIC_BLOCK(ATOMIC_FORCEON) { - UART1_RxHead = UART1_RxTail; - } -} /* uart1_flush */ - -#endif - -#endif /* defined(USART1_ENABLED) */ - -#if defined(USART2_ENABLED) - -/* - * these functions are only for ATmegas with four USART - */ -#if defined(ATMEGA_USART2) - -ISR(UART2_RECEIVE_INTERRUPT) -/************************************************************************* -Function: UART2 Receive Complete interrupt -Purpose: called when the UART2 has received a character -**************************************************************************/ -{ - uint16_t tmphead; - uint8_t data; - uint8_t usr; - uint8_t lastRxError; - - - /* read UART status register and UART data register */ - usr = UART2_STATUS; - data = UART2_DATA; - - /* */ - lastRxError = (usr & (_BV(FE2)|_BV(DOR2))); - - /* calculate buffer index */ - tmphead = (UART2_RxHead + 1) & UART_RX2_BUFFER_MASK; - - if (tmphead == UART2_RxTail) { - /* error: receive buffer overflow */ - lastRxError = UART_BUFFER_OVERFLOW >> 8; - } else { - /* store new index */ - UART2_RxHead = tmphead; - /* store received data in buffer */ - UART2_RxBuf[tmphead] = data; - } - UART2_LastRxError = lastRxError; -} - - -ISR(UART2_TRANSMIT_INTERRUPT) -/************************************************************************* -Function: UART2 Data Register Empty interrupt -Purpose: called when the UART2 is ready to transmit the next byte -**************************************************************************/ -{ - uint16_t tmptail; - - - if (UART2_TxHead != UART2_TxTail) { - /* calculate and store new buffer index */ - tmptail = (UART2_TxTail + 1) & UART_TX2_BUFFER_MASK; - UART2_TxTail = tmptail; - /* get one byte from buffer and write it to UART */ - UART2_DATA = UART2_TxBuf[tmptail]; /* start transmission */ - } else { - /* tx buffer empty, disable UDRE interrupt */ - UART2_CONTROL &= ~_BV(UART2_UDRIE); - } -} - - -/************************************************************************* -Function: uart2_init() -Purpose: initialize UART2 and set baudrate -Input: baudrate using macro UART_BAUD_SELECT() -Returns: none -**************************************************************************/ -void uart2_init(uint16_t baudrate) -{ - ATOMIC_BLOCK(ATOMIC_FORCEON) { - UART2_TxHead = 0; - UART2_TxTail = 0; - UART2_RxHead = 0; - UART2_RxTail = 0; - } - - /* Set baud rate */ - if (baudrate & 0x8000) { - UART2_STATUS = (1<<U2X2); //Enable 2x speed - baudrate &= ~0x8000; - } - UBRR2H = (uint8_t) (baudrate>>8); - UBRR2L = (uint8_t) baudrate; - - /* Enable USART receiver and transmitter and receive complete interrupt */ - UART2_CONTROL = _BV(RXCIE2)|(1<<RXEN2)|(1<<TXEN2); - - /* Set frame format: asynchronous, 8data, no parity, 1stop bit */ -#ifdef URSEL2 - UCSR2C = (1<<URSEL2)|(3<<UCSZ20); -#else - UCSR2C = (3<<UCSZ20); -#endif -} /* uart_init */ - - -/************************************************************************* -Function: uart2_getc() -Purpose: return byte from ringbuffer -Returns: lower byte: received byte from ringbuffer - higher byte: last receive error -**************************************************************************/ -uint16_t uart2_getc(void) -{ - uint16_t tmptail; - uint8_t data; - - ATOMIC_BLOCK(ATOMIC_FORCEON) { - if (UART2_RxHead == UART2_RxTail) { - return UART_NO_DATA; /* no data available */ - } - } - - /* calculate / store buffer index */ - - tmptail = (UART2_RxTail + 1) & UART_RX2_BUFFER_MASK; - UART2_RxTail = tmptail; - - /* get data from receive buffer */ - data = UART2_RxBuf[tmptail]; - - return (UART2_LastRxError << 8) + data; - -} /* uart2_getc */ - -/************************************************************************* -Function: uart2_peek() -Purpose: Returns the next byte (character) of incoming UART data without - removing it from the ring buffer. That is, successive calls to - uartN_peek() will return the same character, as will the next - call to uartN_getc() -Returns: lower byte: next byte in ring buffer - higher byte: last receive error -**************************************************************************/ -uint16_t uart2_peek(void) -{ - uint16_t tmptail; - uint8_t data; - - ATOMIC_BLOCK(ATOMIC_FORCEON) { - if (UART2_RxHead == UART2_RxTail) { - return UART_NO_DATA; /* no data available */ - } - } - - tmptail = (UART2_RxTail + 1) & UART_RX2_BUFFER_MASK; - - /* get data from receive buffer */ - data = UART2_RxBuf[tmptail]; - - return (UART2_LastRxError << 8) + data; - -} /* uart2_peek */ - -/************************************************************************* -Function: uart2_putc() -Purpose: write byte to ringbuffer for transmitting via UART -Input: byte to be transmitted -Returns: none -**************************************************************************/ -void uart2_putc(uint8_t data) -{ - -#ifdef USART2_LARGE_BUFFER - uint16_t tmphead; - uint16_t txtail_tmp; - - tmphead = (UART2_TxHead + 1) & UART_TX2_BUFFER_MASK; - - do { - ATOMIC_BLOCK(ATOMIC_FORCEON) { - txtail_tmp = UART2_TxTail; - } - } while (tmphead == txtail_tmp); /* wait for free space in buffer */ -#else - uint16_t tmphead; - - tmphead = (UART2_TxHead + 1) & UART_TX2_BUFFER_MASK; - - while (tmphead == UART2_TxTail); /* wait for free space in buffer */ -#endif - - UART2_TxBuf[tmphead] = data; - UART2_TxHead = tmphead; - - /* enable UDRE interrupt */ - UART2_CONTROL |= _BV(UART2_UDRIE); - -} /* uart2_putc */ - - -/************************************************************************* -Function: uart2_puts() -Purpose: transmit string to UART2 -Input: string to be transmitted -Returns: none -**************************************************************************/ -void uart2_puts(const char *s) -{ - while (*s) - uart2_putc(*s++); - -} /* uart2_puts */ - - -/************************************************************************* -Function: uart2_puts_p() -Purpose: transmit string from program memory to UART2 -Input: program memory string to be transmitted -Returns: none -**************************************************************************/ -void uart2_puts_p(const char *progmem_s) -{ - register char c; - - while ((c = pgm_read_byte(progmem_s++))) { - uart2_putc(c); - } - -} /* uart2_puts_p */ - - - -/************************************************************************* -Function: uart2_available() -Purpose: Determine the number of bytes waiting in the receive buffer -Input: None -Returns: Integer number of bytes in the receive buffer -**************************************************************************/ -uint16_t uart2_available(void) -{ - uint16_t ret; - - ATOMIC_BLOCK(ATOMIC_FORCEON) { - ret = (UART_RX2_BUFFER_SIZE + UART2_RxHead - UART2_RxTail) & UART_RX2_BUFFER_MASK; - } - return ret; -} /* uart2_available */ - - - -/************************************************************************* -Function: uart2_flush() -Purpose: Flush bytes waiting the receive buffer. Actually ignores them. -Input: None -Returns: None -**************************************************************************/ -void uart2_flush(void) -{ - ATOMIC_BLOCK(ATOMIC_FORCEON) { - UART2_RxHead = UART2_RxTail; - } -} /* uart2_flush */ - -#endif - -#endif /* defined(USART2_ENABLED) */ - -#if defined(USART3_ENABLED) - -/* - * these functions are only for ATmegas with four USART - */ -#if defined(ATMEGA_USART3) - -ISR(UART3_RECEIVE_INTERRUPT) -/************************************************************************* -Function: UART3 Receive Complete interrupt -Purpose: called when the UART3 has received a character -**************************************************************************/ -{ - uint16_t tmphead; - uint8_t data; - uint8_t usr; - uint8_t lastRxError; - - /* read UART status register and UART data register */ - usr = UART3_STATUS; - data = UART3_DATA; - - /* */ - lastRxError = (usr & (_BV(FE3)|_BV(DOR3))); - - /* calculate buffer index */ - tmphead = (UART3_RxHead + 1) & UART_RX3_BUFFER_MASK; - - if (tmphead == UART3_RxTail) { - /* error: receive buffer overflow */ - lastRxError = UART_BUFFER_OVERFLOW >> 8; - } else { - /* store new index */ - UART3_RxHead = tmphead; - /* store received data in buffer */ - UART3_RxBuf[tmphead] = data; - } - UART3_LastRxError = lastRxError; -} - - -ISR(UART3_TRANSMIT_INTERRUPT) -/************************************************************************* -Function: UART3 Data Register Empty interrupt -Purpose: called when the UART3 is ready to transmit the next byte -**************************************************************************/ -{ - uint16_t tmptail; - - - if (UART3_TxHead != UART3_TxTail) { - /* calculate and store new buffer index */ - tmptail = (UART3_TxTail + 1) & UART_TX3_BUFFER_MASK; - UART3_TxTail = tmptail; - /* get one byte from buffer and write it to UART */ - UART3_DATA = UART3_TxBuf[tmptail]; /* start transmission */ - } else { - /* tx buffer empty, disable UDRE interrupt */ - UART3_CONTROL &= ~_BV(UART3_UDRIE); - } -} - - -/************************************************************************* -Function: uart3_init() -Purpose: initialize UART3 and set baudrate -Input: baudrate using macro UART_BAUD_SELECT() -Returns: none -**************************************************************************/ -void uart3_init(uint16_t baudrate) -{ - ATOMIC_BLOCK(ATOMIC_FORCEON) { - UART3_TxHead = 0; - UART3_TxTail = 0; - UART3_RxHead = 0; - UART3_RxTail = 0; - } - - /* Set baud rate */ - if (baudrate & 0x8000) { - UART3_STATUS = (1<<U2X3); //Enable 2x speed - baudrate &= ~0x8000; - } - UBRR3H = (uint8_t)(baudrate>>8); - UBRR3L = (uint8_t) baudrate; - - /* Enable USART receiver and transmitter and receive complete interrupt */ - UART3_CONTROL = _BV(RXCIE3)|(1<<RXEN3)|(1<<TXEN3); - - /* Set frame format: asynchronous, 8data, no parity, 1stop bit */ -#ifdef URSEL3 - UCSR3C = (1<<URSEL3)|(3<<UCSZ30); -#else - UCSR3C = (3<<UCSZ30); -#endif -} /* uart_init */ - - -/************************************************************************* -Function: uart3_getc() -Purpose: return byte from ringbuffer -Returns: lower byte: received byte from ringbuffer - higher byte: last receive error -**************************************************************************/ -uint16_t uart3_getc(void) -{ - uint16_t tmptail; - uint8_t data; - - ATOMIC_BLOCK(ATOMIC_FORCEON) { - if (UART3_RxHead == UART3_RxTail) { - return UART_NO_DATA; /* no data available */ - } - } - - /* calculate / store buffer index */ - tmptail = (UART3_RxTail + 1) & UART_RX3_BUFFER_MASK; - UART3_RxTail = tmptail; - - /* get data from receive buffer */ - data = UART3_RxBuf[tmptail]; - - return (UART3_LastRxError << 8) + data; - -} /* uart3_getc */ - -/************************************************************************* -Function: uart3_peek() -Purpose: Returns the next byte (character) of incoming UART data without - removing it from the ring buffer. That is, successive calls to - uartN_peek() will return the same character, as will the next - call to uartN_getc() -Returns: lower byte: next byte in ring buffer - higher byte: last receive error -**************************************************************************/ -uint16_t uart3_peek(void) -{ - uint16_t tmptail; - uint8_t data; - - ATOMIC_BLOCK(ATOMIC_FORCEON) { - if (UART3_RxHead == UART3_RxTail) { - return UART_NO_DATA; /* no data available */ - } - } - - tmptail = (UART3_RxTail + 1) & UART_RX3_BUFFER_MASK; - - /* get data from receive buffer */ - data = UART3_RxBuf[tmptail]; - - return (UART3_LastRxError << 8) + data; - -} /* uart3_peek */ - -/************************************************************************* -Function: uart3_putc() -Purpose: write byte to ringbuffer for transmitting via UART -Input: byte to be transmitted -Returns: none -**************************************************************************/ -void uart3_putc(uint8_t data) -{ - -#ifdef USART3_LARGE_BUFFER - uint16_t tmphead; - uint16_t txtail_tmp; - - tmphead = (UART3_TxHead + 1) & UART_TX3_BUFFER_MASK; - - do { - ATOMIC_BLOCK(ATOMIC_FORCEON) { - txtail_tmp = UART3_TxTail; - } - } while (tmphead == txtail_tmp); /* wait for free space in buffer */ -#else - uint16_t tmphead; - - tmphead = (UART3_TxHead + 1) & UART_TX3_BUFFER_MASK; - - while (tmphead == UART3_TxTail); /* wait for free space in buffer */ -#endif - - UART3_TxBuf[tmphead] = data; - UART3_TxHead = tmphead; - - /* enable UDRE interrupt */ - UART3_CONTROL |= _BV(UART3_UDRIE); - -} /* uart3_putc */ - - -/************************************************************************* -Function: uart3_puts() -Purpose: transmit string to UART3 -Input: string to be transmitted -Returns: none -**************************************************************************/ -void uart3_puts(const char *s) -{ - while (*s) { - uart3_putc(*s++); - } - -} /* uart3_puts */ - - -/************************************************************************* -Function: uart3_puts_p() -Purpose: transmit string from program memory to UART3 -Input: program memory string to be transmitted -Returns: none -**************************************************************************/ -void uart3_puts_p(const char *progmem_s) -{ - register char c; - - while ((c = pgm_read_byte(progmem_s++))) { - uart3_putc(c); - } - -} /* uart3_puts_p */ - - - -/************************************************************************* -Function: uart3_available() -Purpose: Determine the number of bytes waiting in the receive buffer -Input: None -Returns: Integer number of bytes in the receive buffer -**************************************************************************/ -uint16_t uart3_available(void) -{ - uint16_t ret; - - ATOMIC_BLOCK(ATOMIC_FORCEON) { - ret = (UART_RX3_BUFFER_SIZE + UART3_RxHead - UART3_RxTail) & UART_RX3_BUFFER_MASK; - } - return ret; -} /* uart3_available */ - - - -/************************************************************************* -Function: uart3_flush() -Purpose: Flush bytes waiting the receive buffer. Actually ignores them. -Input: None -Returns: None -**************************************************************************/ -void uart3_flush(void) -{ - ATOMIC_BLOCK(ATOMIC_FORCEON) { - UART3_RxHead = UART3_RxTail; - } -} /* uart3_flush */ - -#endif - -#endif /* defined(USART3_ENABLED) */ |