mirror of
https://github.com/ultimatepp/ultimatepp.git
synced 2026-05-16 14:16:09 -06:00
Bazaar/Serial : added functions to control DTR and RTS lines
git-svn-id: svn://ultimatepp.org/upp/trunk@10765 f0d560ea-af0d-0410-9eb7-867de7ffcac7
This commit is contained in:
micio
parent
60add2c64d
commit
d4603161c8
3 changed files with 165 additions and 66 deletions
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@ -65,11 +65,18 @@ class Serial
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// close the port
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void Close(void);
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// control DTR and RTS lines
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bool SetDTR(bool on);
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bool SetRTS(bool on);
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// flush data
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bool FlushInput(void);
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bool FlushOutput(void);
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bool FlushAll(void);
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// check if data is available on serial port
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int Avail(void);
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// read a single byte, block 'timeout' milliseconds
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bool Read(byte &c, uint32_t timeout = 0);
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bool Read(char &c, uint32_t timeout = 0);
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@ -10,15 +10,16 @@
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NAMESPACE_UPP
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static bool __IsSymLink(const char *path)
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static bool __IsSymLink(const char *path)
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{
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struct stat stf;
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lstat(path, &stf);
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return S_ISLNK(stf.st_mode);
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}
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}
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dword Serial::stdBauds[] = {
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dword Serial::stdBauds[] =
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{
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0, 50, 75, 110, 134, 150,
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200, 300, 600, 1200, 1800,
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2400, 4800, 9600, 19200,
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@ -26,7 +27,7 @@ dword Serial::stdBauds[] = {
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};
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int Serial::stdBaudsCount = sizeof(Serial::stdBauds) / sizeof(dword);
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// constructor
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Serial::Serial()
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{
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@ -52,11 +53,12 @@ Serial::~Serial()
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// open the port
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bool Serial::Open(String const &port, dword lSpeed, byte parity, byte bits, byte stopBits)
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{
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static int stdBaudCodes[] = {
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static int stdBaudCodes[] =
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{
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B0, B50, B75, B110, B134, B150,
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B200, B300, B600, B1200, B1800,
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B2400, B4800, B9600, B19200,
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B38400, B57600, B115200,B230400
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B38400, B57600, B115200, B230400
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};
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// open the device
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@ -79,12 +81,12 @@ bool Serial::Open(String const &port, dword lSpeed, byte parity, byte bits, byte
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errCode = DeviceError;
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return false;
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}
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//// CFLAG /////
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int idx = GetStandardBaudRates().Find(lSpeed);
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dword speed;
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if(idx < 0)
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if (idx < 0)
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{
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// custom speed
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// @@ maybe add support later
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@ -103,7 +105,7 @@ bool Serial::Open(String const &port, dword lSpeed, byte parity, byte bits, byte
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// parity
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tty.c_cflag &= ~(PARENB | PARODD);
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switch(parity)
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switch (parity)
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{
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case ParityNone:
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break;
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@ -125,9 +127,9 @@ bool Serial::Open(String const &port, dword lSpeed, byte parity, byte bits, byte
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errCode = InvalidParity;
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return false;
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}
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// set data size
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switch(bits)
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switch (bits)
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{
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case 5:
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tty.c_cflag = (tty.c_cflag & ~CSIZE) | CS5;
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@ -147,11 +149,11 @@ bool Serial::Open(String const &port, dword lSpeed, byte parity, byte bits, byte
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errCode = InvalidSize;
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return false;
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}
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// stop bits
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if(stopBits == 1)
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if (stopBits == 1)
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tty.c_cflag &= ~CSTOPB;
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else if(stopBits == 2)
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else if (stopBits == 2)
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tty.c_cflag |= CSTOPB;
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else
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{
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@ -163,15 +165,15 @@ bool Serial::Open(String const &port, dword lSpeed, byte parity, byte bits, byte
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// ignore modem controls, enable reading
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tty.c_cflag |= (CLOCAL | CREAD);
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// no rts/cts
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tty.c_cflag &= ~CRTSCTS;
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//// LFLAG /////
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// no signaling chars, no echo, no canonical mode
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tty.c_lflag = 0;
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// tty.c_lflag &= ~(ICANON | ECHO | ECHOE | ISIG);
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tty.c_lflag = 0;
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// tty.c_lflag &= ~(ICANON | ECHO | ECHOE | ISIG);
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//// IFLAG /////
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@ -182,34 +184,36 @@ bool Serial::Open(String const &port, dword lSpeed, byte parity, byte bits, byte
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// DO NOT ignore carriage returns
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tty.c_iflag &= ~IGNCR;
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// DO NOT translate cr/lf
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tty.c_iflag &= ~ICRNL;
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// DO NOT translate cr
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tty.c_iflag &= ~INLCR;
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// shut off xon/xoff ctrl
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tty.c_iflag &= ~(IXON | IXOFF | IXANY);
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//// OFLAG /////
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// no remapping, no delays
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tty.c_oflag = 0;
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//// CONTROL CHARACTERS /////
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// read doesn't block
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tty.c_cc[VMIN] = 0;
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// 0.5 seconds read timeout
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tty.c_cc[VTIME] = 0;
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RLOG("CFLAGS : " << tty.c_cflag);
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RLOG("LFLAGS : " << tty.c_lflag);
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RLOG("IFLAGS : " << tty.c_iflag);
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RLOG("OFLAGS : " << tty.c_oflag);
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/*
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RLOG("CFLAGS : " << tty.c_cflag);
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RLOG("LFLAGS : " << tty.c_lflag);
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RLOG("IFLAGS : " << tty.c_iflag);
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RLOG("OFLAGS : " << tty.c_oflag);
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*/
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if (tcsetattr(fd, TCSANOW, &tty) != 0)
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{
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Close();
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@ -217,97 +221,150 @@ bool Serial::Open(String const &port, dword lSpeed, byte parity, byte bits, byte
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errCode = DeviceError;
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return false;
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}
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return true;
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}
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// close the port
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void Serial::Close(void)
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{
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if(fd != -1)
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if (fd != -1)
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close(fd);
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fd = -1;
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isError = false;
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errCode = Ok;
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}
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// control DTR and RTS lines
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bool Serial::SetDTR(bool on)
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{
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unsigned int ctl;
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int r;
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r = ioctl(fd, TIOCMGET, &ctl);
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if (r < 0)
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return false;
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if (on)
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ctl |= TIOCM_DTR;
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else
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ctl &= ~TIOCM_DTR;
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r = ioctl(fd, TIOCMSET, &ctl);
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if (r < 0)
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return false;
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return true;
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}
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bool Serial::SetRTS(bool on)
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{
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unsigned int ctl;
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int r;
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r = ioctl(fd, TIOCMGET, &ctl);
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if (r < 0)
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return false;
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if (on)
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ctl |= TIOCM_RTS;
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else
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ctl &= ~TIOCM_RTS;
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r = ioctl(fd, TIOCMSET, &ctl);
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if (r < 0)
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return false;
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return true;
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}
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// flush data
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bool Serial::FlushInput(void)
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{
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if(fd == -1)
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if (fd == -1)
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return false;
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return !tcflush(fd, TCIFLUSH);
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}
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bool Serial::FlushOutput(void)
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{
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if(fd == -1)
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if (fd == -1)
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return false;
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return !tcflush(fd, TCOFLUSH);
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}
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bool Serial::FlushAll(void)
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{
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if(fd == -1)
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if (fd == -1)
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return false;
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return !tcflush(fd, TCIOFLUSH);
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}
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// check if data is available on serial port
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int Serial::Avail(void)
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{
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if (fd == -1)
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return false;
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int bytes = 0;
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ioctl(fd, FIONREAD, &bytes);
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return bytes;
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}
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// read a single byte, block 'timeout' milliseconds
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bool Serial::Read(byte &c, uint32_t timeout)
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{
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char buf[1];
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uint32_t tim = msecs() + timeout;
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for(;;)
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for (;;)
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{
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if(!read(fd, buf, 1))
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if (!read(fd, buf, 1))
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{
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if((uint32_t)msecs() > tim)
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if ((uint32_t)msecs() > tim)
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return false;
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continue;
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}
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c = (byte)buf[0];
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return true;
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}
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}
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}
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bool Serial::Read(char &c, uint32_t timeout)
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{
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char buf[1];
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uint32_t tim = msecs() + timeout;
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for(;;)
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for (;;)
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{
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if(!read(fd, buf, 1))
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if (!read(fd, buf, 1))
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{
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if((uint32_t)msecs() > tim)
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if ((uint32_t)msecs() > tim)
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return false;
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continue;
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}
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c = buf[0];
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return true;
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}
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}
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}
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// write a single byte
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bool Serial::Write(char c, uint32_t timeout)
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{
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if(!timeout)
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if (!timeout)
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return write(fd, &c, 1);
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uint32_t tim = msecs() + timeout;
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for(;;)
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for (;;)
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{
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if(write(fd, &c, 1) == 1)
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if (write(fd, &c, 1) == 1)
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return true;
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if((uint32_t)msecs() > tim)
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if ((uint32_t)msecs() > tim)
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break;
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}
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return false;
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}
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// read data, requested amount, blocks 'timeout' milliseconds
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// if reqSize == 0 just read all available data, waiting for 'timeout' if != 0
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String Serial::Read(size_t reqSize, uint32_t timeout)
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@ -318,21 +375,21 @@ String Serial::Read(size_t reqSize, uint32_t timeout)
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size_t n;
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uint32_t tim = msecs() + timeout;
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if(reqSize)
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if (reqSize)
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{
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n = min(reqSize, (size_t)1000);
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while(reqSize)
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while (reqSize)
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{
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n = read(fd, buf, n);
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if(!n)
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if (!n)
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{
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if((uint32_t)msecs() > tim)
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if ((uint32_t)msecs() > tim)
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break;
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n = min(reqSize, (size_t)1000);
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continue;
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}
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tim = msecs() + timeout;
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if(n)
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if (n)
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{
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reqSize -= n;
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data.Cat(buf, n);
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@ -342,44 +399,44 @@ String Serial::Read(size_t reqSize, uint32_t timeout)
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}
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else
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{
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for(;;)
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for (;;)
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{
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n = read(fd, buf, 1000);
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if(!n)
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if (!n)
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{
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if((uint32_t)msecs() > tim)
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if ((uint32_t)msecs() > tim)
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break;
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continue;
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}
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tim = msecs() + timeout;
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if(n)
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if (n)
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data.Cat(buf, n);
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}
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}
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return data;
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return data;
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}
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// writes data
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bool Serial::Write(String const &data, uint32_t timeout)
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{
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int dLen = data.GetCount();
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if(!timeout)
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if (!timeout)
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return (write(fd, ~data, data.GetCount()) == dLen);
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uint32_t tim = msecs() + timeout;
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const char *dPos = ~data;
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for(;;)
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for (;;)
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{
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int written = write(fd, dPos, dLen);
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if(written == dLen)
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if (written == dLen)
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return true;
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if(written >= 0)
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if (written >= 0)
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{
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dPos += written;
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dLen -= written;
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continue;
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}
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if((uint32_t)msecs() >= tim)
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if ((uint32_t)msecs() >= tim)
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break;
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}
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return false;
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@ -233,6 +233,27 @@ void Serial::Close ( void )
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fd = INVALID_HANDLE_VALUE;
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}
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// control DTR and RTS lines
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bool Serial::SetDTR(bool on)
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{
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if(on)
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EscapeCommFunction(hComPort, SETDTR);
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else
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EscapeCommFunction(hComPort, CLRDTR);
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return true;
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}
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bool Serial::SetRTS(bool on)
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{
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if(on)
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EscapeCommFunction(hComPort, SETRTS);
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else
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EscapeCommFunction(hComPort, CLRRTS);
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return true;
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}
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// flush data
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bool Serial::FlushInput ( void )
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{
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@ -249,6 +270,20 @@ bool Serial::FlushAll ( void )
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return PurgeComm ( fd, PURGE_RXCLEAR ) & PurgeComm ( fd, PURGE_TXCLEAR );
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}
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// check if data is available on serial port
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int Serial::Avail(void)
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{
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dword errors;
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COMSTAT stat;
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if(!ClearCommError(fd, &errors, &stat))
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return 0;
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return stat.cbInQue;
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);
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// read a single byte, block 'timeout' milliseconds
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bool Serial::Read ( byte &c, uint32_t timeout )
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{
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