func (p *Port) reset() (err error) {
err = syscall.FlushFileBuffers(p.handle)
if err != nil {
return
}
err = _PurgeComm(p.handle, _PURGE_TXABORT|_PURGE_RXABORT|_PURGE_TXCLEAR|_PURGE_RXCLEAR)
if err != nil {
return
}
err = _ClearCommError(p.handle)
if err != nil {
return
}
return
}
func flush(addr, len uintptr) error {
errno := syscall.FlushViewOfFile(addr, len)
if errno != nil {
return os.NewSyscallError("FlushViewOfFile", errno)
}
handleLock.Lock()
defer handleLock.Unlock()
handle, ok := handleMap[addr]
if !ok {
// should be impossible; we would've errored above
return errors.New("unknown base address")
}
errno = syscall.FlushFileBuffers(handle)
return os.NewSyscallError("FlushFileBuffers", errno)
}
func (p *Port) flush() (err error) {
return syscall.FlushFileBuffers(p.handle)
}