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;
}
int Arduino_connect(const char *serialPortName, int baudrate)
{
struct sp_port_config *serialPortConfiguration;
enum sp_return r;
if(serialPort) sp_free_port(serialPort);
// Find the specified serial port
if(sp_get_port_by_name(serialPortName, &serialPort) != SP_OK)
{
fprintf(stderr, "Cannot find the serial port\n");
return 0;
}
// Open the serial port
if(sp_open(serialPort, SP_MODE_READ_WRITE) != SP_OK)
{
fprintf(stderr, "Cannot open the serial port\n");
return 0;
}
// Configure the serial port
sp_new_config(&serialPortConfiguration);
sp_set_config_baudrate(serialPortConfiguration, 9600);
sp_set_config_parity(serialPortConfiguration, SP_PARITY_NONE);
sp_set_config_bits(serialPortConfiguration, 8);
sp_set_config_stopbits(serialPortConfiguration, 1);
sp_set_config_flowcontrol(serialPortConfiguration, SP_FLOWCONTROL_NONE);
if(sp_set_config(serialPort, serialPortConfiguration) != SP_OK)
{
fprintf(stderr, "Cannot configure the serial port\n");
return 0;
}
sp_free_config(serialPortConfiguration);
return 1;
}
/**
* Set serial parameters for the specified serial port.
*
* @param serial Previously initialized serial port structure.
* @param baudrate The baudrate to set.
* @param bits The number of data bits to use.
* @param parity The parity setting to use (0 = none, 1 = even, 2 = odd).
* @param stopbits The number of stop bits to use (1 or 2).
* @param flowcontrol The flow control settings to use (0 = none, 1 = RTS/CTS,
* 2 = XON/XOFF).
*
* @return SR_OK upon success, SR_ERR upon failure.
*/
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->fd == -1) {
sr_dbg("Cannot configure unopened serial port %s (fd %d).",
serial->port, serial->fd);
return SR_ERR;
}
sr_spew("Setting serial parameters on port %s (fd %d).", serial->port,
serial->fd);
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: %s.", error);
sp_free_error_message(error);
return SR_ERR;
}
return SR_OK;
}