#ifndef _UARTCFG_H #define _UARTCFG_H /*! * Very simple software UART for AVR microcontrollers * (C) 2016 Stuart Longland * * 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 (at your * option) 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. * * You should have received a copy of the GNU General Public License along * with this program; if not, write to the Free Software Foundation, Inc., * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. */ /* The following defines the configuration for the UART driver. */ /*! * UART BAUD rate. This is the speed that we transmit at. For the 1MHz * RC clock, 4800 is the maximum speed (out of the "standard" ones) that * will work. If you're running at 8MHz or with an external crystal, you * may go higher. */ #define UART_BAUD (300) /* Port settings */ #define UART_TX_PORT PORTA /*!< GPIO port register for Tx */ #define UART_TX_DDR DDRA /*!< GPIO direction register for Tx */ #define UART_TX_BIT 4 /*!< GPIO pin for Tx */ #endif