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comparison fluid-mnf/serial.c @ 348:37b5f94de802

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fluid-mnf: sensible target tty specification
author Mychaela Falconia <falcon@freecalypso.org>
date Fri, 13 Mar 2020 06:41:44 +0000
parents 2bd27d940023
children 49fe64a5e207
comparison
equal deleted inserted replaced
347:21d38dce4d15 348:37b5f94de802
43 ******************************************************************************/ 43 ******************************************************************************/
44 44
45 static int target_fd; 45 static int target_fd;
46 static struct termios2 target_termios; 46 static struct termios2 target_termios;
47 47
48 static const char port_name_prefix[] = "/dev/ttyUSB";
49
50 static void fill_termios(int bps) 48 static void fill_termios(int bps)
51 { 49 {
52 int termios_baud_code; 50 int termios_baud_code;
53 51
54 switch (bps) { 52 switch (bps) {
87 target_termios.c_cc[VTIME] = 0; 85 target_termios.c_cc[VTIME] = 0;
88 target_termios.c_ispeed = bps; 86 target_termios.c_ispeed = bps;
89 target_termios.c_ospeed = bps; 87 target_termios.c_ospeed = bps;
90 } 88 }
91 89
92 int serial_init(int uart, int bps, char *flowcontrol) 90 int serial_init(char *ttyport, int bps)
93 { 91 {
94 char ttyport[32];
95 static int zero = 0; 92 static int zero = 0;
96 93
97 sprintf(ttyport, "%s%d", port_name_prefix, uart); 94 if (!ttyport) {
95 ttyport = getenv("FLUID_PORT");
96 if (!ttyport) {
97 fprintf(stderr,
98 "fluid-mnf error: target tty port must be specified with -p or FLUID_PORT=\n");
99 exit(-E_BADARG);
100 }
101 }
102
98 target_fd = open(ttyport, O_RDWR|O_NONBLOCK); 103 target_fd = open(ttyport, O_RDWR|O_NONBLOCK);
99 if (target_fd < 0) 104 if (target_fd < 0)
100 return E_OS + E_UART_INIT; 105 return E_OS + E_UART_INIT;
101 ioctl(target_fd, TIOCEXCL); 106 ioctl(target_fd, TIOCEXCL);
102 fill_termios(bps); 107 fill_termios(bps);