int ppp_modem_init(const char *number, int blind, int *conn_rate) {
uint64_t timeout;
/* Initialize the modem. */
if(!modem_init())
return -1;
/* Set the modem up to connect to a remote machine. */
modem_set_mode(MODEM_MODE_REMOTE, MODEM_SPEED_V8_AUTO);
/* If we aren't doing blind dialing, wait up to 5 seconds for a dialtone. */
if(!blind) {
if(modem_wait_dialtone(5000)) {
modem_shutdown();
return -2;
}
}
/* Dial the specified phone number. */
if(!modem_dial(number)) {
modem_shutdown();
return -3;
}
/* Give ourselves a 60 second timeout to establish a connection. */
timeout = timer_ms_gettime64() + 60 * 1000;
while(timer_ms_gettime64() < timeout && modem_is_connecting()) {
thd_pass();
}
/* Did we connect successfully? */
if(!modem_is_connected()) {
modem_shutdown();
return -4;
}
/* Does the user want the connection rate back? If so give it to them. */
if(conn_rate) {
*conn_rate = modem_get_connection_rate();
}
dbglog(DBG_KDEBUG, "ppp_modem: connected at %lu bps\n",
modem_get_connection_rate());
/* We connected to the peer successfully, set our device with libppp. */
ppp_set_device(&modem_dev);
return 0;
}
int main()
{
int answerMode = 0;
unsigned char data[DATA_BUFFER_LENGTH];
int i;
int byteCount;
if (!modem_init())
{
printf("modem_init failed!\n");
return 1;
}
printf("\nDreamcast modem - example 1\n");
printf("Press START to exit\n\n");
if (answerMode)
printf("Answer mode - Call the Dreamcast. It will pick up after one ring.\n\n");
else
printf("Remote mode - Connect the phone line to your computer's modem and use ATA to\n \"answer\" the Dreamcast.\n\n");
printf("Once the modems are connected you can send data to the Dreamcast,\n");
printf("and the Dreamcast can send data to the remote modem by pressing the\n");
printf("A button.\n\n");
while (!buttonPressed(CONT_START))
{
modem_set_mode(answerMode ? MODEM_MODE_ANSWER :
MODEM_MODE_REMOTE,
MODEM_SPEED_V8_AUTO);
printf("Waiting for a connection..\n");
while (modem_is_connecting())
{
if (buttonPressed(CONT_START))
{
printf("Connection aborted\n");
return 0;
}
}
if (modem_is_connected())
{
printf("Connected at %dbps\n", (int)modem_get_connection_rate());
while (!buttonPressed(CONT_START) && modem_is_connected())
{
/* Receive data */
if (modem_has_data())
{
byteCount = modem_read_data(data, DATA_BUFFER_LENGTH);
for (i=0; i<byteCount; i++)
printf("%c", (data[i] >= 32 && data[i] <= 126) ?
data[i] : ' ');
}
/* Send data */
if (buttonPressed(CONT_A))
{
for (i=0; i<8; i++)
data[i] = (int)'a' + i;
modem_write_data(data, 8);
}
}
if (modem_is_connected())
{
printf("Disconnecting..\n");
modem_disconnect();
while (buttonPressed(CONT_START));
} else
printf("Disconnected\n");
} else
printf("Connection failed\n");
}
return 0;
}
