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Retrieve current control line settings in start_config.

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Martin Ling 2013-11-14 21:27:06 +00:00
parent d514a26f81
commit 9f90173cbd
1 changed files with 16 additions and 0 deletions
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16
serialport.c
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@ -504,8 +504,24 @@ static int start_config(struct sp_port *port, struct sp_port_data *data)
if (!GetCommState(port->hdl, &data->dcb))
return SP_ERR_FAIL;
#else
int controlbits;
if (tcgetattr(port->fd, &data->term) < 0)
return SP_ERR_FAIL;
if (ioctl(port->fd, TIOCMGET, &controlbits) < 0)
return SP_ERR_FAIL;
if (data->term.c_cflag & CRTSCTS) {
data->rts = SP_RTS_FLOW_CONTROL;
data->cts = SP_CTS_FLOW_CONTROL;
} else {
data->rts = (controlbits & TIOCM_RTS) ? SP_RTS_ON : SP_RTS_OFF;
data->cts = SP_CTS_IGNORE;
}
data->dtr = (controlbits & TIOCM_DTR) ? SP_DTR_ON : SP_DTR_OFF;
data->dsr = SP_DSR_IGNORE;
#endif
return SP_OK;
}