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sun
2019-07-12 22:52:18 +08:00
parent 89e07615aa
commit f40bfbf5d2
1 changed files with 151 additions and 146 deletions
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297
others/src/serial/serial.cpp
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@@ -16,162 +16,162 @@ parity(parity),
databits(databits),
stopsbits(stopsbits),
dwCommEvents(dwCommEvents){
if (wait_uart) {
LOGM("Waiting for serial COM%d", portNo);
while (InitPort(portNo, baud, parity, databits, stopsbits, dwCommEvents) == false);
LOGM("Port COM%d open success!", portNo);
} else {
if (InitPort(portNo, baud, parity, databits, stopsbits, dwCommEvents)) {
LOGM("Port COM%d open success!", portNo);
} else {
LOGE("Port COM%d open fail!", portNo);
}
}
if (wait_uart) {
LOGM("Waiting for serial COM%d", portNo);
while (InitPort(portNo, baud, parity, databits, stopsbits, dwCommEvents) == false);
LOGM("Port COM%d open success!", portNo);
} else {
if (InitPort(portNo, baud, parity, databits, stopsbits, dwCommEvents)) {
LOGM("Port COM%d open success!", portNo);
} else {
LOGE("Port COM%d open fail!", portNo);
}
}
}
Serial::~Serial() {
ClosePort();
ClosePort();
}
void Serial::ErrorHandler() {
if (wait_uart) {
LOGE("Serial COM%d offline, waiting for serial COM%d", portNo, portNo);
while (InitPort(portNo, baud, parity, databits, stopsbits, dwCommEvents) == false);
LOGM("Port COM%d reopen success!", portNo);
}
if (wait_uart) {
LOGE("Serial COM%d offline, waiting for serial COM%d", portNo, portNo);
while (InitPort(portNo, baud, parity, databits, stopsbits, dwCommEvents) == false);
LOGM("Port COM%d reopen success!", portNo);
}
}
bool Serial::openPort(UINT portNo) {
char szPort[50];
sprintf_s(szPort, "COM%d", portNo);
char szPort[50];
sprintf_s(szPort, "COM%d", portNo);
/** 打开指定的串口 */
hComm = CreateFileA(szPort, /** 设备名,COM1,COM2等 */
GENERIC_READ | GENERIC_WRITE, /** 访问模式,可同时读写 */
0, /** 共享模式,0表示不共享 */
NULL, /** 安全性设置,一般使用NULL */
OPEN_EXISTING, /** 该参数表示设备必须存在,否则创建失败 */
0,
0);
/** 打开指定的串口 */
hComm = CreateFileA(szPort, /** 设备名,COM1,COM2等 */
GENERIC_READ | GENERIC_WRITE, /** 访问模式,可同时读写 */
0, /** 共享模式,0表示不共享 */
NULL, /** 安全性设置,一般使用NULL */
OPEN_EXISTING, /** 该参数表示设备必须存在,否则创建失败 */
0,
0);
return hComm != INVALID_HANDLE_VALUE;
return hComm != INVALID_HANDLE_VALUE;
}
void Serial::ClosePort() {
/** 如果有串口被打开，关闭它 */
if (hComm != INVALID_HANDLE_VALUE) {
CloseHandle(hComm);
hComm = INVALID_HANDLE_VALUE;
}
/** 如果有串口被打开，关闭它 */
if (hComm != INVALID_HANDLE_VALUE) {
CloseHandle(hComm);
hComm = INVALID_HANDLE_VALUE;
}
}
bool Serial::InitPort(UINT portNo, UINT baud, char parity, UINT databits, UINT stopsbits, DWORD dwCommEvents) {
/** 临时变量,将制定参数转化为字符串形式,以构造DCB结构 */
char szDCBparam[50];
sprintf_s(szDCBparam, "baud=%d parity=%c data=%d stop=%d", baud, parity, databits, stopsbits);
if (!openPort(portNo)){
cout << "open error!" << endl;
return false;
}
/** 临时变量,将制定参数转化为字符串形式,以构造DCB结构 */
char szDCBparam[50];
sprintf_s(szDCBparam, "baud=%d parity=%c data=%d stop=%d", baud, parity, databits, stopsbits);
BOOL bIsSuccess = TRUE;
COMMTIMEOUTS CommTimeouts;
CommTimeouts.ReadIntervalTimeout = 0;
CommTimeouts.ReadTotalTimeoutMultiplier = 0;
CommTimeouts.ReadTotalTimeoutConstant = 0;
CommTimeouts.WriteTotalTimeoutMultiplier = 0;
CommTimeouts.WriteTotalTimeoutConstant = 0;
if (bIsSuccess) {
bIsSuccess = SetCommTimeouts(hComm, &CommTimeouts);
} else {
cout << "SetCommTimeouts error!" << endl;
}
if (!openPort(portNo)){
cout << "open error!" << endl;
return false;
}
DCB dcb;
if (bIsSuccess) {
/** 获取当前串口配置参数,并且构造串口DCB参数 */
bIsSuccess = GetCommState(hComm, &dcb);
bIsSuccess = BuildCommDCB(szDCBparam, &dcb);
if (!bIsSuccess) {
cout << "Create dcb fail with "<< GetLastError() << endl;
}
/** 开启RTS flow控制 */
dcb.fRtsControl = RTS_CONTROL_ENABLE;
}
BOOL bIsSuccess = TRUE;
COMMTIMEOUTS CommTimeouts;
CommTimeouts.ReadIntervalTimeout = 0;
CommTimeouts.ReadTotalTimeoutMultiplier = 0;
CommTimeouts.ReadTotalTimeoutConstant = 0;
CommTimeouts.WriteTotalTimeoutMultiplier = 0;
CommTimeouts.WriteTotalTimeoutConstant = 0;
if (bIsSuccess) {
bIsSuccess = SetCommTimeouts(hComm, &CommTimeouts);
} else {
cout << "SetCommTimeouts error!" << endl;
}
if (bIsSuccess) {
/** 使用DCB参数配置串口状态 */
bIsSuccess = SetCommState(hComm, &dcb);
if (!bIsSuccess) {
cout << "SetCommState error!" << endl;
}
}
DCB dcb;
if (bIsSuccess) {
/** 获取当前串口配置参数,并且构造串口DCB参数 */
bIsSuccess = GetCommState(hComm, &dcb);
bIsSuccess = BuildCommDCB(szDCBparam, &dcb);
if (!bIsSuccess) {
/** 清空串口缓冲区 */
PurgeComm(hComm, PURGE_RXCLEAR | PURGE_TXCLEAR | PURGE_RXABORT | PURGE_TXABORT);
cout << "Create dcb fail with "<< GetLastError() << endl;
}
/** 开启RTS flow控制 */
dcb.fRtsControl = RTS_CONTROL_ENABLE;
}
return bIsSuccess;
if (bIsSuccess) {
/** 使用DCB参数配置串口状态 */
bIsSuccess = SetCommState(hComm, &dcb);
if (!bIsSuccess) {
cout << "SetCommState error!" << endl;
}
}
/** 清空串口缓冲区 */
PurgeComm(hComm, PURGE_RXCLEAR | PURGE_TXCLEAR | PURGE_RXABORT | PURGE_TXABORT);
return bIsSuccess;
}
UINT Serial::GetBytesInCOM() const {
DWORD dwError = 0; /** 错误码 */
COMSTAT comstat; /** COMSTAT结构体,记录通信设备的状态信息 */
memset(&comstat, 0, sizeof(COMSTAT));
DWORD dwError = 0; /** 错误码 */
COMSTAT comstat; /** COMSTAT结构体,记录通信设备的状态信息 */
memset(&comstat, 0, sizeof(COMSTAT));
UINT BytesInQue = 0;
/** 在调用ReadFile和WriteFile之前,通过本函数清除以前遗留的错误标志 */
if (ClearCommError(hComm, &dwError, &comstat)) {
BytesInQue = comstat.cbInQue; /** 获取在输入缓冲区中的字节数 */
}
UINT BytesInQue = 0;
/** 在调用ReadFile和WriteFile之前,通过本函数清除以前遗留的错误标志 */
if (ClearCommError(hComm, &dwError, &comstat)) {
BytesInQue = comstat.cbInQue; /** 获取在输入缓冲区中的字节数 */
}
return BytesInQue;
return BytesInQue;
}
bool Serial::WriteData(const unsigned char* pData, unsigned int length) {
if (hComm == INVALID_HANDLE_VALUE) {
ErrorHandler();
return false;
}
if (hComm == INVALID_HANDLE_VALUE) {
ErrorHandler();
return false;
}
/** 向缓冲区写入指定量的数据 */
BOOL bResult = TRUE;
DWORD BytesToSend = 0;
bResult = WriteFile(hComm, pData, length, &BytesToSend, NULL);
if (!bResult) {
DWORD dwError = GetLastError();
/** 清空串口缓冲区 */
PurgeComm(hComm, PURGE_RXCLEAR | PURGE_RXABORT);
ErrorHandler();
return false;
}
return true;
/** 向缓冲区写入指定量的数据 */
BOOL bResult = TRUE;
DWORD BytesToSend = 0;
bResult = WriteFile(hComm, pData, length, &BytesToSend, NULL);
if (!bResult) {
DWORD dwError = GetLastError();
/** 清空串口缓冲区 */
PurgeComm(hComm, PURGE_RXCLEAR | PURGE_RXABORT);
ErrorHandler();
return false;
}
return true;
}
bool Serial::ReadData(unsigned char *buffer, unsigned int length) {
if (hComm == INVALID_HANDLE_VALUE) {
ErrorHandler();
return false;
}
if (hComm == INVALID_HANDLE_VALUE) {
ErrorHandler();
return false;
}
/** 从缓冲区读取length字节的数据 */
BOOL bResult = TRUE;
DWORD totalRead = 0, onceRead = 0;
while (totalRead < length) {
bResult = ReadFile(hComm, buffer, length-totalRead, &onceRead, NULL);
totalRead += onceRead;
if ((!bResult)) {
/** 获取错误码,可以根据该错误码查出错误原因 */
DWORD dwError = GetLastError();
/** 从缓冲区读取length字节的数据 */
BOOL bResult = TRUE;
DWORD totalRead = 0, onceRead = 0;
while (totalRead < length) {
bResult = ReadFile(hComm, buffer, length-totalRead, &onceRead, NULL);
totalRead += onceRead;
if ((!bResult)) {
/** 获取错误码,可以根据该错误码查出错误原因 */
DWORD dwError = GetLastError();
/** 清空串口缓冲区 */
PurgeComm(hComm, PURGE_RXCLEAR | PURGE_RXABORT);
ErrorHandler();
return false;
}
}
return bResult;
/** 清空串口缓冲区 */
PurgeComm(hComm, PURGE_RXCLEAR | PURGE_RXABORT);
ErrorHandler();
return false;
}
}
return bResult;
}
#elif defined(Linux) || defined(Darwin)
@@ -180,23 +180,23 @@ bool Serial::ReadData(unsigned char *buffer, unsigned int length) {
using namespace std;
string get_uart_dev_name(){
FILE* ls = popen("ls /dev/ttyUSB* --color=never", "r");
string get_uart_dev_name() {
FILE *ls = popen("ls /dev/ttyUSB* --color=never", "r");
char name[20] = {0};
fscanf(ls, "%s", name);
return name;
}
Serial::Serial(int nSpeed, char nEvent, int nBits, int nStop) :
nSpeed(nSpeed), nEvent(nEvent), nBits(nBits), nStop(nStop){
if(wait_uart){
nSpeed(nSpeed), nEvent(nEvent), nBits(nBits), nStop(nStop) {
if (wait_uart) {
LOGM("Wait for serial be ready!");
while(InitPort(nSpeed, nEvent, nBits, nStop) == false);
while (InitPort(nSpeed, nEvent, nBits, nStop) == false);
LOGM("Port set successfully!");
}else{
if(InitPort(nSpeed, nEvent, nBits, nStop)){
} else {
if (InitPort(nSpeed, nEvent, nBits, nStop)) {
LOGM("Port set successfully!");
}else{
} else {
LOGE("Port set fail!");
}
}
@@ -207,15 +207,15 @@ Serial::~Serial() {
fd = -1;
}
bool Serial::InitPort(int nSpeed, char nEvent, int nBits, int nStop){
bool Serial::InitPort(int nSpeed, char nEvent, int nBits, int nStop) {
string name = get_uart_dev_name();
if(name == ""){
if (name == "") {
return false;
}
if((fd=open(name.data(), O_RDWR)) < 0){
if ((fd = open(name.data(), O_RDWR)) < 0) {
return false;
}
if(set_opt(fd, nSpeed, nEvent, nBits, nStop) < 0){
if (set_opt(fd, nSpeed, nEvent, nBits, nStop) < 0) {
return false;
}
return true;
@@ -225,13 +225,14 @@ bool Serial::InitPort(int nSpeed, char nEvent, int nBits, int nStop){
//
//}
bool Serial::WriteData(const unsigned char* pData, unsigned int length){
int cnt=0, curr=0;
while((curr=write(fd, pData+cnt, length-cnt))>0 && (cnt+=curr)<length);
if(cnt < 0){
bool Serial::WriteData(const unsigned char *pData, unsigned int length) {
int cnt = 0, curr = 0;
if (fd <= 0)return false;
while ((curr = write(fd, pData + cnt, length - cnt)) > 0 && (cnt += curr) < length);
if (cnt < 0) {
LOGE("Serial offline!");
close(fd);
if(wait_uart){
if (wait_uart) {
InitPort(nSpeed, nEvent, nBits, nStop);
}
return false;
@@ -239,13 +240,13 @@ bool Serial::WriteData(const unsigned char* pData, unsigned int length){
return true;
}
bool Serial::ReadData(unsigned char* buffer, unsigned int length){
int cnt=0, curr=0;
while((curr=read(fd, buffer+cnt, length-cnt))>0 && (cnt+=curr)<length);
if(cnt < 0){
bool Serial::ReadData(unsigned char *buffer, unsigned int length) {
int cnt = 0, curr = 0;
while ((curr = read(fd, buffer + cnt, length - cnt)) > 0 && (cnt += curr) < length);
if (cnt < 0) {
LOGE("Serial offline!");
close(fd);
if(wait_uart){
if (wait_uart) {
InitPort(nSpeed, nEvent, nBits, nStop);
}
return false;
@@ -265,10 +266,13 @@ int Serial::set_opt(int fd, int nSpeed, char nEvent, int nBits, int nStop) {
switch (nBits) {
case 7:
newtio.c_cflag |= CS7;break;
newtio.c_cflag |= CS7;
break;
case 8:
newtio.c_cflag |= CS8;break;
default:break;
newtio.c_cflag |= CS8;
break;
default:
break;
}
switch (nEvent) {
@@ -285,7 +289,8 @@ int Serial::set_opt(int fd, int nSpeed, char nEvent, int nBits, int nStop) {
case 'N': //无校验
newtio.c_cflag &= ~PARENB;
break;
default:break;
default:
break;
}
switch (nSpeed) {