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revert: modify serial device settings instead of using empty template.

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This commit is contained in:
Roland Jax
2014-12-03 15:16:12 +01:00
parent 109c7fecb2
commit b68e346120
1 changed files with 10 additions and 10 deletions
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src/lib/ebus/port.cpp
+10 -10
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@@ -135,7 +135,7 @@ unsigned char Device::getByte()
void DeviceSerial::openDevice(const string deviceName, const bool noDeviceCheck)
{
m_noDeviceCheck = noDeviceCheck;
struct termios settings;
struct termios newSettings;
m_open = false;
// open file descriptor
@@ -147,22 +147,22 @@ void DeviceSerial::openDevice(const string deviceName, const bool noDeviceCheck)
// save current settings
tcgetattr(m_fd, &m_oldSettings);
// modify current settings
tcgetattr(m_fd, &settings);
// create new settings
memset(&newSettings, '\0', sizeof(newSettings));
settings.c_cflag |= (B2400 | CS8 | CLOCAL | CREAD);
settings.c_lflag &= ~(ICANON | ECHO | ECHOE | ISIG);
settings.c_iflag |= IGNPAR;
settings.c_oflag &= ~OPOST;
newSettings.c_cflag |= (B2400 | CS8 | CLOCAL | CREAD);
newSettings.c_lflag &= ~(ICANON | ECHO | ECHOE | ISIG);
newSettings.c_iflag |= IGNPAR;
newSettings.c_oflag &= ~OPOST;
settings.c_cc[VMIN] = 1;
settings.c_cc[VTIME] = 0;
newSettings.c_cc[VMIN] = 1;
newSettings.c_cc[VTIME] = 0;
// empty device buffer
tcflush(m_fd, TCIFLUSH);
// activate new settings of serial device
tcsetattr(m_fd, TCSAFLUSH, &settings);
tcsetattr(m_fd, TCSAFLUSH, &newSettings);
// set serial device into blocking mode
fcntl(m_fd, F_SETFL, fcntl(m_fd, F_GETFL) & ~O_NONBLOCK);