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[/] [openrisc/] [trunk/] [rtos/] [ecos-2.0/] [packages/] [hal/] [arm/] [edb7xxx/] [v2_0/] [support/] [io.c] - Rev 475
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//========================================================================== // // io.c // // Linux I/O support for Cirrus Logic EDB7xxx eval board tools // //========================================================================== //####ECOSGPLCOPYRIGHTBEGIN#### // ------------------------------------------- // This file is part of eCos, the Embedded Configurable Operating System. // Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc. // // eCos 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 or (at your option) any later version. // // eCos 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 eCos; if not, write to the Free Software Foundation, Inc., // 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. // // As a special exception, if other files instantiate templates or use macros // or inline functions from this file, or you compile this file and link it // with other works to produce a work based on this file, this file does not // by itself cause the resulting work to be covered by the GNU General Public // License. However the source code for this file must still be made available // in accordance with section (3) of the GNU General Public License. // // This exception does not invalidate any other reasons why a work based on // this file might be covered by the GNU General Public License. // // Alternative licenses for eCos may be arranged by contacting Red Hat, Inc. // at http://sources.redhat.com/ecos/ecos-license/ // ------------------------------------------- //####ECOSGPLCOPYRIGHTEND#### //========================================================================== //#####DESCRIPTIONBEGIN#### // // Author(s): gthomas // Contributors: gthomas // Date: 1999-06-16 // Description: Linux I/O support for Cirrus Logic EDB7xxx FLASH tools //####DESCRIPTIONEND#### // // io.c - I/O functions // #include <stdio.h> #include <sys/ioctl.h> #include <fcntl.h> #include <termios.h> #include <errno.h> char _ReceiveChar(long port) { char buf; int res; // Port is in non-blocking mode, this needs to have a loop do { res = read(port, &buf, 1); } while (res < 0); // printf("Read: %c\n", buf); return buf; } static void uspin(int len) { volatile int cnt; while (--len >= 0) { for (cnt = 1; cnt < 2000; cnt++) ; } } void _SendChar(long port, char ch) { char buf = ch; write(port, &buf, 1); // printf("Send: %x\n", ch); // usleep(100); uspin(100); } void _SetBaud(long port, long reqRate) { struct termios buf; int rate; // Get original configuration if (tcgetattr(port, &buf)) { fprintf(stderr, "Can't get port config\n"); return; } // Reset to raw. buf.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP |INLCR|IGNCR|ICRNL|IXON); buf.c_oflag &= ~OPOST; buf.c_lflag &= ~(ECHO|ECHONL|ICANON|ISIG|IEXTEN); buf.c_cflag &= ~(CSIZE|PARENB); buf.c_cflag |= CS8; // Set baud rate. switch (reqRate) { case 9600: rate = B9600; break; case 38400: rate = B38400; break; case 57600: rate = B57600; break; case 115200: rate = B115200; break; } cfsetispeed(&buf, rate); cfsetospeed(&buf, rate); // Set data bits. buf.c_cflag &= ~CSIZE; buf.c_cflag |= CS8; // Set stop bits. buf.c_cflag &= ~CSTOPB; // One stop // Set parity. buf.c_cflag &= ~(PARENB | PARODD); // no parity. // Set the new settings if (tcsetattr(port, TCSADRAIN, &buf)) { fprintf(stderr, "Error: tcsetattr\n"); return; } tcdrain(port); usleep(1000000/10*2); sleep(2); } int _CharReady(long port) { #ifdef __CYGWIN__ // Windows doesn't support the below ioctl return 1; #else int n, res; res = ioctl(port, FIONREAD, &n); if (res < 0) { fprintf(stderr, "I/O error: %s\n", strerror(errno)); exit(1); } return n; // Non-zero if characters ready to read #endif } void _WaitForOutputEmpty(long port) { usleep(2000000); } long _OpenPort(char *name) { int fd; fd = open(name, O_RDWR|O_NONBLOCK); return fd; }
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