63 lines
1.6 KiB
C
63 lines
1.6 KiB
C
|
#include "contiki.h"
|
||
|
|
#include <pty.h>
|
||
|
|
#include <stdio.h>
|
||
|
|
#include <sys/select.h>
|
||
|
|
|
||
|
|
static int ppp_master_fd = -1;
|
||
|
|
static int ppp_slave_fd = -1;
|
||
|
|
static char ppp_slave_name[80];
|
||
|
|
|
||
|
|
void init_pty() {
|
||
|
|
char cmd[256];
|
||
|
|
|
||
|
|
if (ppp_master_fd == -1) {
|
||
|
|
if (openpty( &ppp_master_fd, &ppp_slave_fd, ppp_slave_name, NULL, NULL)==0)
|
||
|
|
{
|
||
|
|
sprintf( cmd, "stty raw -echo -echoe < %s", ppp_slave_name);
|
||
|
|
system(cmd);
|
||
|
|
printf("pty opened, slave name = %s\n", ppp_slave_name);
|
||
|
|
printf("Now start pppd, for example with:\n");
|
||
|
|
printf("/usr/sbin/pppd %s 115200 local noauth nocrtscts nodetach persist asyncmap 0xffffffff 192.168.1.1:192.168.1.2\n",
|
||
|
|
ppp_slave_name);
|
||
|
|
close(ppp_slave_fd);
|
||
|
|
} else {
|
||
|
|
printf("pty open failed\n");
|
||
|
|
exit(1);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
void ppp_arch_putchar(u8_t c) {
|
||
|
|
init_pty();
|
||
|
|
if (write( ppp_master_fd, &c, 1 ) > 0) {
|
||
|
|
//printf("wr=0x%02x '%c'\n", c, c>=' '?c<0x7f?c:' ':' ');
|
||
|
|
} else {
|
||
|
|
//printf("wr=0x%02x '%c' FAILED\n", c, c>=' '?c<0x7f?c:' ':' ');
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
int ppp_arch_getchar(u8_t *p) {
|
||
|
|
fd_set read_fds;
|
||
|
|
struct timeval timeout;
|
||
|
|
|
||
|
|
init_pty();
|
||
|
|
FD_ZERO( &read_fds );
|
||
|
|
FD_SET( ppp_master_fd, &read_fds );
|
||
|
|
timeout.tv_sec = 0;
|
||
|
|
timeout.tv_usec = 10000;
|
||
|
|
if (select( ppp_master_fd+1, &read_fds, NULL, NULL, &timeout) != 0) {
|
||
|
|
if (FD_ISSET( ppp_master_fd, &read_fds )) {
|
||
|
|
if ( read( ppp_master_fd, p, 1) > 0 ) {
|
||
|
|
//printf("rd=0x%02x\n", *p);
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
printf("closing pty: %s\n", ppp_slave_name);
|
||
|
|
close( ppp_master_fd );
|
||
|
|
ppp_master_fd == -1;
|
||
|
|
} else {
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
}
|