/**
* Set serial parameters for the specified serial port.
*
* @param serial Previously initialized serial port structure.
* @param[in] baudrate The baudrate to set.
* @param[in] bits The number of data bits to use (5, 6, 7 or 8).
* @param[in] parity The parity setting to use (0 = none, 1 = even, 2 = odd).
* @param[in] stopbits The number of stop bits to use (1 or 2).
* @param[in] flowcontrol The flow control settings to use (0 = none,
* 1 = RTS/CTS, 2 = XON/XOFF).
* @param[in] rts Status of RTS line (0 or 1; required by some interfaces).
* @param[in] dtr Status of DTR line (0 or 1; required by some interfaces).
*
* @retval SR_OK Success.
* @retval SR_ERR Failure.
*
* @private
*/
SR_PRIV int serial_set_params(struct sr_serial_dev_inst *serial, int baudrate,
int bits, int parity, int stopbits,
int flowcontrol, int rts, int dtr)
{
int ret;
char *error;
struct sp_port_config *config;
if (!serial) {
sr_dbg("Invalid serial port.");
return SR_ERR;
}
if (!serial->data) {
sr_dbg("Cannot configure unopened serial port %s.", serial->port);
return SR_ERR;
}
sr_spew("Setting serial parameters on port %s.", serial->port);
sp_new_config(&config);
sp_set_config_baudrate(config, baudrate);
sp_set_config_bits(config, bits);
switch (parity) {
case 0:
sp_set_config_parity(config, SP_PARITY_NONE);
break;
case 1:
sp_set_config_parity(config, SP_PARITY_EVEN);
break;
case 2:
sp_set_config_parity(config, SP_PARITY_ODD);
break;
default:
return SR_ERR_ARG;
}
sp_set_config_stopbits(config, stopbits);
sp_set_config_rts(config, flowcontrol == 1 ? SP_RTS_FLOW_CONTROL : rts);
sp_set_config_cts(config, flowcontrol == 1 ? SP_CTS_FLOW_CONTROL : SP_CTS_IGNORE);
sp_set_config_dtr(config, dtr);
sp_set_config_dsr(config, SP_DSR_IGNORE);
sp_set_config_xon_xoff(config, flowcontrol == 2 ? SP_XONXOFF_INOUT : SP_XONXOFF_DISABLED);
ret = sp_set_config(serial->data, config);
sp_free_config(config);
switch (ret) {
case SP_ERR_ARG:
sr_err("Invalid arguments for setting serial port parameters.");
return SR_ERR_ARG;
case SP_ERR_FAIL:
error = sp_last_error_message();
sr_err("Error setting serial port parameters (%d): %s.",
sp_last_error_code(), error);
sp_free_error_message(error);
return SR_ERR;
}
return SR_OK;
}
int serial_set_params(struct serial_device_t *serial,
int baudrate,
int bits,
int parity,
int stopbits,
int flowcontrol,
int rts,
int dtr)
{
if (!serial) {
log_error("serial_set_params: invalid serial port device.");
return -DEVICE_CONN_ERROR;
}
if (!serial->data) {
log_error("serial_set_params: cannot configure unopened serial port %s.",
serial->port);
return -DEVICE_CONN_ERROR;
}
log_debug("serial_set_params: setting serial parameters on port %s.",
serial->port);
struct sp_port_config *config;
sp_new_config(&config);
sp_set_config_baudrate(config, baudrate);
sp_set_config_bits(config, bits);
sp_set_config_parity(config, parity);
sp_set_config_stopbits(config, stopbits);
sp_set_config_rts(config, flowcontrol == 1 ? SP_RTS_FLOW_CONTROL : rts);
sp_set_config_cts(config, flowcontrol == 1 ? SP_CTS_FLOW_CONTROL : SP_CTS_IGNORE);
sp_set_config_dtr(config, dtr);
sp_set_config_dsr(config, SP_DSR_IGNORE);
sp_set_config_xon_xoff(config, flowcontrol == 2 ? SP_XONXOFF_INOUT : SP_XONXOFF_DISABLED);
int ret = sp_set_config(serial->data, config);
sp_free_config(config);
char *error;
switch (ret) {
case SP_ERR_ARG:
log_error("serial_set_params: invalid serial port parameters.");
return -DEVICE_CONF_ERROR;
case SP_ERR_FAIL:
error = sp_last_error_message();
log_error("serial_set_params: error setting serial port parameters (%d): %s.",
sp_last_error_code(), error);
sp_free_error_message(error);
return -DEVICE_CONN_ERROR;
}
return NO_ERROR;
}