FreeCalypso > hg > freecalypso-sw
view miscutil/openport.c @ 992:a7b0b426f9ca
target-utils: boot ROM UART autodetection revamped
The new implementation should work with both the familiar Calypso C035
boot ROM version found in our regular targets as well as the older
Calypso F741979B version found on the vintage D-Sample board.
author | Mychaela Falconia <falcon@ivan.Harhan.ORG> |
---|---|
date | Wed, 30 Dec 2015 21:28:41 +0000 |
parents | 3822f3b198d4 |
children |
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/* * Serial port opening code for fc-serterm */ #include <sys/types.h> #include <sys/file.h> #include <sys/ioctl.h> #include <termios.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <strings.h> #include <unistd.h> extern int target_fd; static struct baudrate { char *name; speed_t termios_code; } baud_rate_table[] = { {"19200", B19200}, {"38400", B38400}, {"57600", B57600}, {"115200", B115200}, /* non-standard high baud rates "remapped" by CP2102 usb2serial IC */ {"203125", B230400}, {"406250", B460800}, {"812500", B921600}, /* table search terminator */ {NULL, B0} }; open_target_serial(ttydev, baudname) char *ttydev, *baudname; { struct termios target_termios; struct baudrate *br; for (br = baud_rate_table; br->name; br++) if (!strcmp(br->name, baudname)) break; if (!br->name) { fprintf(stderr, "baud rate \"%s\" unknown/unsupported\n", baudname); exit(1); } target_fd = open(ttydev, O_RDWR|O_NONBLOCK); if (target_fd < 0) { perror(ttydev); exit(1); } target_termios.c_iflag = IGNBRK; target_termios.c_oflag = 0; target_termios.c_cflag = CLOCAL|HUPCL|CREAD|CS8; target_termios.c_lflag = 0; target_termios.c_cc[VMIN] = 1; target_termios.c_cc[VTIME] = 0; cfsetispeed(&target_termios, br->termios_code); cfsetospeed(&target_termios, br->termios_code); if (tcsetattr(target_fd, TCSAFLUSH, &target_termios) < 0) { perror("initial tcsetattr on target"); exit(1); } return 0; }