/**
* throws EXIT_FAILURE if could not open the port
*/
int
Serial_Port::
open_serial()
{
// --------------------------------------------------------------------------
// OPEN PORT
// --------------------------------------------------------------------------
//printf("OPEN PORT\n");
fd = _open_port(uart_name);
// Check success
if (fd == -1) {
//printf("failure, could not open port.\n");
return -1;
//throw EXIT_FAILURE;
}
// --------------------------------------------------------------------------
// SETUP PORT
// --------------------------------------------------------------------------
bool success = _setup_port(baudrate, 8, 1, false, false);
// --------------------------------------------------------------------------
// CHECK STATUS
// --------------------------------------------------------------------------
if (!success) {
printf("failure, could not configure port.\n");
//throw EXIT_FAILURE;
return -1;
}
if (fd <= 0) {
printf("Connection attempt to port %s with %d baud, 8N1 failed, exiting.\n", uart_name, baudrate);
//throw EXIT_FAILURE;
return -1;
}
// --------------------------------------------------------------------------
// CONNECTED!
// --------------------------------------------------------------------------
printf("Connected to %s with %d baud, 8 data bits, no parity, 1 stop bit (8N1)\n", uart_name, baudrate);
lastStatus.packet_rx_drop_count = 0;
status = true;
printf("\n");
return 0;
}
void open_serial()
{
printf("INITIALIZE \n");
initialize_defaults();
// --------------------------------------------------------------------------
// OPEN PORT
// --------------------------------------------------------------------------
printf("OPEN PORT\n");
fd = _open_port(uart_name);
// Check success
if (fd == -1)
{
printf("failure, could not open port.\n");
}
// --------------------------------------------------------------------------
// SETUP PORT
// --------------------------------------------------------------------------
int success = _setup_port(baudrate, 8, 1, 0,0);
// --------------------------------------------------------------------------
// CHECK STATUS
// --------------------------------------------------------------------------
if (!success)
{
printf("failure, could not configure port.\n");
}
if (fd <= 0)
{
printf("Connection attempt to port %s with %d baud, 8N1 failed, exiting.\n", uart_name, baudrate);
}
// --------------------------------------------------------------------------
// CONNECTED!
// --------------------------------------------------------------------------
printf("Connected to %s with %d baud, 8 data bits, no parity, 1 stop bit (8N1)\n", uart_name, baudrate);
lastStatus.packet_rx_drop_count = 0;
status = 1;
printf("\n");
return;
}
/**
* @brief 对文件描述符的控制
*
*
* 目前仅支持写的超时时间设置
*
* @param [in] fd 文件描述符
* @param [in] cmd 命令标识，目前已定义的命令有
* - SWPA_FILE_IOCTL_COMM_SET_TIMEOUT : 写的超时时间设置
* @param [in] args 命令标志参数
* @retval SWPAR_OK : 成功
* @retval SWPAR_FAIL : 失败
*/
int swpa_comm_file_ioctl(
int fd,
int cmd,
void* args
)
{
SWPA_FILEHEADER * pheader = (SWPA_FILEHEADER *)fd;
COMM_FILE_INFO * pinfo = (COMM_FILE_INFO *)pheader->device_param;
//参数有效性检查
SWPA_FILE_CHECK(0 != fd); //fd 必须不等于0
//SWPA_FILE_CHECK(0 < cmd); //cmd取值没有限定，故mark掉
//SWPA_FILE_CHECK(NULL != args); //args 在不同cmd下可以为NULL，故mark掉
//参数打印
SWPA_FILE_PRINT("fd=%d\n", fd);
SWPA_FILE_PRINT("cmd=%d\n", cmd);
SWPA_FILE_PRINT("args=0x%08x\n", args);
switch (cmd)
{
case SWPA_FILE_IOCTL_COMM_CLEAR:
tcflush(fd, TCIOFLUSH);
return SWPAR_OK;
case SWPA_FILE_IOCTL_COMM_IS_RS485:
{
if (NULL == args)
{
SWPA_FILE_PRINT("Err: NULL == args! [%d]\n", pinfo->dev_id, SWPAR_INVALIDARG);
return SWPAR_INVALIDARG;
}
int is_rs485 = *(int*)args;
switch (is_rs485)
{
case 0:
pinfo->is_rs485 = 0;
break;
case 1:
/*no 'break' here */
default:
pinfo->is_rs485 = 1;
if (0 == (0 == pinfo->dev_id ? _rs485_lock_1 : _rs485_lock_2)
&& SWPAR_OK != swpa_mutex_create((0 == pinfo->dev_id ? &_rs485_lock_1 : &_rs485_lock_2), NULL))
{
SWPA_FILE_PRINT("Err: failed to create rs485 %d lock! [-1]\n", pinfo->dev_id);
return SWPAR_FAIL;
}
break;
}
}
break;
case SWPA_FILE_IOCTL_COMM_SET_ATTR:
{
char * argstr = (char *)args;
int baudrate , databits, stop;
char parity;
char * str = NULL;
SWPA_FILE_PRINT("Info: argstr=%s\n", argstr);
str = swpa_strstr(argstr, "baudrate");
if (NULL != str)
{
swpa_sscanf(str, "baudrate:%d", &baudrate);
switch (baudrate)
{
//case 2400:
case 4800:
case 9600:
case 19200:
case 38400:
case 115200:
//case 460800:
baudrate = baudrate;
break;
default:
SWPA_FILE_PRINT("Err: invalid baudrate (%d)!\n", baudrate );
return SWPAR_INVALIDARG;
}
}
else
{
SWPA_FILE_PRINT("Err: no baudrate value [%d]!\n", SWPAR_INVALIDARG);
return SWPAR_INVALIDARG;
}
//设置数据长度
str = swpa_strstr(argstr, "databits");
if (NULL != str)
{
swpa_sscanf(str, "databits:%d", &databits);
switch (databits)
{
//case 5:
//case 6:
case 7:
case 8:
databits = databits;
break ;
default:
SWPA_FILE_PRINT("Err: invalid data bits (%d)!\n", databits);
return SWPAR_INVALIDARG ;
}
}
else
{
SWPA_FILE_PRINT("Err: no data bits value [%d]!\n", SWPAR_INVALIDARG);
return SWPAR_INVALIDARG;
}
//设置奇偶校验位
str = swpa_strstr(argstr, "parity");
if (NULL != str)
{
swpa_sscanf(str, "parity:%c", &parity);
switch (parity)
{
case 'n': case 'N':
case 'o': case 'O':
case 'e': case 'E':
//case 'S': case 's': //as no parity
parity = parity;
break;
default:
SWPA_FILE_PRINT("Err: invalid parity value (%d)!\n", parity);
return SWPAR_INVALIDARG;
}
}
else
{
SWPA_FILE_PRINT("Err: no parity value [%d]!\n", SWPAR_INVALIDARG);
return SWPAR_INVALIDARG;
}
//设置停止位
str = swpa_strstr(argstr, "stop");
if (NULL != str)
{
swpa_sscanf(str, "stop:%d", &stop);
switch (stop)
{
case 1:
case 2:
stop = stop;
break;
default:
SWPA_FILE_PRINT("Err: invalid stop bits lenght (%d)!\n", stop);
return SWPAR_INVALIDARG;
}
}
else
{
SWPA_FILE_PRINT("Err: no stop bit value [%d]!\n", SWPAR_INVALIDARG);
return SWPAR_INVALIDARG;
}
return _setup_port(pinfo->fd, baudrate, databits, parity, stop);
}
break;
case SWPA_FILE_SET_READ_TIMEOUT :
{
pinfo->read_timeout = *(int *)args;
return SWPAR_OK;
}
break;
case SWPA_FILE_SET_WRITE_TIMEOUT :
{
pinfo->write_timeout = *(int *)args;
return SWPAR_OK;
}
break;
default:
SWPA_FILE_PRINT("Err: invalid cmd for comm file! [%d]\n", SWPAR_INVALIDARG);
return SWPAR_INVALIDARG;
}
return SWPAR_OK;
}
