add Lslidar_ROS2_driver/

This commit is contained in:
X-lanni
2025-06-06 10:44:28 +08:00
parent b2fc659c53
commit d398ba0a22
24 changed files with 3192 additions and 0 deletions
@@ -0,0 +1,400 @@
/*******************************************************
@company: Copyright (C) 2022, Leishen Intelligent System
@product: LSM10 and N10
@filename: lsiosr.cpp
@brief:
@version: date: author: comments:
@v1.0 21-2-4 yao new
*******************************************************/
#include "lslidar_driver/lsiosr.h"
namespace lslidar_driver {
LSIOSR * LSIOSR::instance(std::string name, int speed, int fd)
{
static LSIOSR obj(name, speed, fd);
return &obj;
}
LSIOSR::LSIOSR(std::string port, int baud_rate, int fd):port_(port), baud_rate_(baud_rate), fd_(fd)
{
printf("port = %s, baud_rate = %d\n", port.c_str(), baud_rate);
}
LSIOSR::~LSIOSR()
{
close();
}
/* 串口配置的函数 */
int LSIOSR::setOpt(int nBits, uint8_t nEvent, int nStop)
{
struct termios newtio, oldtio;
/*保存测试现有串口参数设置,在这里如果串口号等出错,会有相关的出错信息*/
if (tcgetattr(fd_, &oldtio) != 0)
{
perror("SetupSerial 1");
return -1;
}
bzero(&newtio, sizeof(newtio));
/*步骤一,设置字符大小*/
newtio.c_cflag |= CLOCAL; //如果设置,modem 的控制线将会被忽略。如果没有设置,则 open()函数会阻塞直到载波检测线宣告 modem 处于摘机状态为止。
newtio.c_cflag |= CREAD; //使端口能读取输入的数据
/*设置每个数据的位数*/
switch (nBits)
{
case 7:
newtio.c_cflag |= CS7;
break;
case 8:
newtio.c_cflag |= CS8;
break;
}
/*设置奇偶校验位*/
switch (nEvent)
{
case 'O': //奇数
newtio.c_iflag |= (INPCK | ISTRIP);
newtio.c_cflag |= PARENB; //使能校验,如果不设PARODD则是偶校验
newtio.c_cflag |= PARODD; //奇校验
break;
case 'E': //偶数
newtio.c_iflag |= (INPCK | ISTRIP);
newtio.c_cflag |= PARENB;
newtio.c_cflag &= ~PARODD;
break;
case 'N': //无奇偶校验位
newtio.c_cflag &= ~PARENB;
break;
}
/*设置波特率*/
switch (baud_rate_)
{
case 230400:
cfsetispeed(&newtio, B230400);
cfsetospeed(&newtio, B230400);
break;
case 460800:
cfsetispeed(&newtio, B460800);
cfsetospeed(&newtio, B460800);
break;
case 500000:
cfsetispeed(&newtio, B500000);
cfsetospeed(&newtio, B500000);
break;
case 921600:
cfsetispeed(&newtio, B921600);
cfsetospeed(&newtio, B921600);
break;
default:
cfsetispeed(&newtio, B460800);
cfsetospeed(&newtio, B460800);
break;
}
/*
* 设置停止位
* 设置停止位的位数, 如果设置,则会在每帧后产生两个停止位, 如果没有设置,则产生一个
* 停止位。一般都是使用一位停止位。需要两位停止位的设备已过时了。
* */
if (nStop == 1)
newtio.c_cflag &= ~CSTOPB;
else if (nStop == 2)
newtio.c_cflag |= CSTOPB;
/*设置等待时间和最小接收字符*/
newtio.c_cc[VTIME] = 0;
newtio.c_cc[VMIN] = 0;
/*处理未接收字符*/
tcflush(fd_, TCIFLUSH);
/*激活新配置*/
if ((tcsetattr(fd_, TCSANOW, &newtio)) != 0)
{
perror("serial set error");
return -1;
}
return 0;
}
void LSIOSR::flushinput() {
tcflush(fd_, TCIFLUSH);
}
/* 从串口中读取数据 */
int LSIOSR::read(unsigned char *buffer, int length, int timeout)
{
memset(buffer, 0, length);
int totalBytesRead = 0;
int rc;
int unlink = 0;
unsigned char* pb = buffer;
if (timeout > 0)
{
rc = waitReadable(timeout);
if (rc <= 0)
{
return (rc == 0) ? 0 : -1;
}
int retry = 3;
while (length > 0)
{
rc = ::read(fd_, pb, (size_t)length);
if (rc > 0)
{
length -= rc;
pb += rc;
totalBytesRead += rc;
if (length == 0)
{
break;
}
}
else if (rc < 0)
{
printf("error \n");
retry--;
if (retry <= 0)
{
break;
}
}
unlink++;
rc = waitReadable(20);
if(unlink > 10)
return -1;
if (rc <= 0)
{
break;
}
}
}
else
{
rc = ::read(fd_, pb, (size_t)length);
if (rc > 0)
{
totalBytesRead += rc;
}
else if ((rc < 0) && (errno != EINTR) && (errno != EAGAIN))
{
printf("read error\n");
return -1;
}
}
return totalBytesRead;
}
int LSIOSR::waitReadable(int millis)
{
if (fd_ < 0)
{
return -1;
}
int serial = fd_;
fd_set fdset;
struct timeval tv;
int rc = 0;
while (millis > 0)
{
if (millis < 5000)
{
tv.tv_usec = millis % 1000 * 1000;
tv.tv_sec = millis / 1000;
millis = 0;
}
else
{
tv.tv_usec = 0;
tv.tv_sec = 5;
millis -= 5000;
}
FD_ZERO(&fdset);
FD_SET(serial, &fdset);
rc = select(serial + 1, &fdset, NULL, NULL, &tv);
if (rc > 0)
{
rc = (FD_ISSET(serial, &fdset)) ? 1 : -1;
break;
}
else if (rc < 0)
{
rc = -1;
break;
}
}
return rc;
}
int LSIOSR::waitWritable(int millis)
{
if (fd_ < 0)
{
return -1;
}
int serial = fd_;
fd_set fdset;
struct timeval tv;
int rc = 0;
while (millis > 0)
{
if (millis < 5000)
{
tv.tv_usec = millis % 1000 * 1000;
tv.tv_sec = millis / 1000;
millis = 0;
}
else
{
tv.tv_usec = 0;
tv.tv_sec = 5;
millis -= 5000;
}
FD_ZERO(&fdset);
FD_SET(serial, &fdset);
rc = select(serial + 1, NULL, &fdset, NULL, &tv);
if (rc > 0)
{
rc = (FD_ISSET(serial, &fdset)) ? 1 : -1;
break;
}
else if (rc < 0)
{
rc = -1;
break;
}
}
return rc;
}
/* 向串口中发送数据 */
int LSIOSR::send(const char* buffer, int length, int timeout)
{
if (fd_ < 0)
{
return -1;
}
if ((buffer == 0) || (length <= 0))
{
return -1;
}
int totalBytesWrite = 0;
int rc;
char* pb = (char*)buffer;
if (timeout > 0)
{
rc = waitWritable(timeout);
if (rc <= 0)
{
return (rc == 0) ? 0 : -1;
}
int retry = 3;
while (length > 0)
{
rc = write(fd_, pb, (size_t)length);
if (rc > 0)
{
length -= rc;
pb += rc;
totalBytesWrite += rc;
if (length == 0)
{
break;
}
}
else
{
retry--;
if (retry <= 0)
{
break;
}
}
rc = waitWritable(50);
if (rc <= 0)
{
break;
}
}
}
else
{
rc = write(fd_, pb, (size_t)length);
if (rc > 0)
{
totalBytesWrite += rc;
}
else if ((rc < 0) && (errno != EINTR) && (errno != EAGAIN))
{
return -1;
}
}
return totalBytesWrite;
}
int LSIOSR::init()
{
int error_code = 0;
fd_ = open(port_.c_str(), O_RDWR|O_NOCTTY|O_NDELAY);
if (0 < fd_)
{
error_code = 0;
setOpt(DATA_BIT_8, PARITY_NONE, STOP_BIT_1);//设置串口参数
//printf("open_port %s OK !\n", port_.c_str());
}
else
{
error_code = -1;
}
return error_code;
}
int LSIOSR::close()
{
::close(fd_);
return 0;
}
std::string LSIOSR::getPort()
{
return port_;
}
int LSIOSR::setPortName(std::string name)
{
port_ = name;
return 0;
}
}