/*! \file uartswconf.h \brief Interrupt-driven Software UART Driver Configuration. */ //***************************************************************************** // // File Name : 'uartswconf.h' // Title : Interrupt-driven Software UART Driver Configuration // Author : Pascal Stang - Copyright (C) 2002-2004 // Created : 7/20/2002 // Revised : 4/27/2004 // Version : 0.1 // Target MCU : Atmel AVR Series (intended for the ATmega16 and ATmega32) // Editor Tabs : 4 // // Description : // This uart library emulates the operation of a UART (serial port) using // the AVR's hardware timers, I/O pins, and some software. // // Specifically, this code uses: // -Timer 1 Output Compare A for transmit timing // -Timer 1 Output Compare B for receive timing // -Timer 1 Input Capture for receive triggering // // The above resources cannot be used for other purposes while this software // UART is enabled. The overflow interrupt from Timer1 can still be used for // other timing, but the prescaler for Timer1 must not be changed. // // Serial output from this UART can be routed to any I/O pin. Serial input // for this UART must come from the Timer1 Input Capture (IC1) I/O pin. // These options should be configured by editing your local copy of // "uartswconf.h". // // This code is distributed under the GNU Public License // which can be found at http://www.gnu.org/licenses/gpl.txt // //***************************************************************************** #ifndef UARTSWCONF_H #define UARTSWCONF_H // constants/macros/typdefs #define UARTSW_RX_BUFFER_SIZE 0x20 ///< UART receive buffer size in bytes #define UARTSW_INVERT ///< define to invert polarity of RX/TX signals // when non-inverted, the serial line is appropriate for passing though // an RS232 driver like the MAX232. When inverted, the serial line can // directly drive/receive RS232 signals to/from a DB9 connector. Be sure // to use a current-limiting resistor and perhaps a diode-clamp circuit when // connecting incoming RS232 signals to a microprocessor I/O pin. // if non-inverted, the serial line idles high (logic 1) between bytes // if inverted, the serial line idles low (logic 0) between bytes // UART transmit pin defines #define UARTSW_TX_PORT PORTD ///< UART Transmit Port #define UARTSW_TX_DDR DDRD ///< UART Transmit DDR #define UARTSW_TX_PIN PD5 ///< UART Transmit Pin // UART receive pin defines // This pin must correspond to the // Timer1 Input Capture (ICP or IC1) pin for your processor #define UARTSW_RX_PORT PORTD ///< UART Receive Port #define UARTSW_RX_DDR DDRD ///< UART Receive DDR #define UARTSW_RX_PORTIN PIND ///< UART Receive Port Input #define UARTSW_RX_PIN PD6 ///< UART Receive Pin #endif