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Add serial_port improvements for Windows to support DMX

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This commit is contained in:
Adam Honse
2023-05-05 11:48:12 -05:00
parent 537e27ba42
commit e5e3ef2e93
1 changed files with 87 additions and 12 deletions
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99
serial_port/serial_port.cpp
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@@ -99,6 +99,9 @@ bool serial_port::serial_open()
char full_path[100];
snprintf(full_path, sizeof(full_path), "\\\\.\\%s", port_name);
/*-----------------------------------------*\
| Open the port read/write |
\*-----------------------------------------*/
file_descriptor = CreateFile(full_path, GENERIC_READ | GENERIC_WRITE, 0, NULL, OPEN_EXISTING, 0, NULL);
if((int)file_descriptor < 0)
@@ -106,29 +109,85 @@ bool serial_port::serial_open()
return false;
}
/*-----------------------------------------*\
| Get the port configuration options |
\*-----------------------------------------*/
SetupComm(file_descriptor, 1, 128);
GetCommState(file_descriptor, &dcb);
dcb.BaudRate = baud_rate; //Set baud rate
/*-----------------------------------------*\
| Configure baud rate |
\*-----------------------------------------*/
dcb.BaudRate = baud_rate;
/*-----------------------------------------*\
| Configure parity |
\*-----------------------------------------*/
switch(parity)
{
case SERIAL_PORT_PARITY_NONE:
dcb.Parity = NOPARITY;
break;
case SERIAL_PORT_PARITY_ODD:
dcb.Parity = ODDPARITY;
break;
case SERIAL_PORT_PARITY_EVEN:
dcb.Parity = EVENPARITY;
break;
}
/*-----------------------------------------*\
| Configure stop bits |
\*-----------------------------------------*/
if(stop_bits == SERIAL_PORT_STOP_BITS_2)
{
dcb.StopBits = ONESTOPBIT;
}
else
{
dcb.StopBits = TWOSTOPBITS;
}
/*-----------------------------------------*\
| Configure flow control |
\*-----------------------------------------*/
if(flow_control)
{
dcb.fRtsControl = RTS_CONTROL_ENABLE;
}
else
{
dcb.fRtsControl = RTS_CONTROL_DISABLE;
}
/*-----------------------------------------*\
| Configure additional parameters |
\*-----------------------------------------*/
dcb.ByteSize = 8; //8 data bits
dcb.Parity = NOPARITY; //Parity = none
dcb.StopBits = ONESTOPBIT; //One stop bit
dcb.fAbortOnError = TRUE; //Abort on error
dcb.fOutX = FALSE; //XON/XOFF off for transmit
dcb.fInX = FALSE; //XON/XOFF off for receive
dcb.fOutxCtsFlow = FALSE; //Turn off CTS flow control
dcb.fRtsControl = RTS_CONTROL_DISABLE; //Options DISABLE, ENABLE, HANDSHAKE
dcb.fOutxDsrFlow = FALSE; //Turn off DSR flow control
dcb.fDtrControl = DTR_CONTROL_DISABLE; //Disable DTR control
/*-----------------------------------------*\
| Set the port configuration options |
\*-----------------------------------------*/
SetCommState(file_descriptor, &dcb);
COMMTIMEOUTS timeouts = {0};
timeouts.ReadIntervalTimeout = 50;
timeouts.ReadTotalTimeoutConstant=50;
timeouts.ReadTotalTimeoutMultiplier=10;
timeouts.WriteTotalTimeoutConstant=50;
timeouts.WriteTotalTimeoutMultiplier=10;
/*-----------------------------------------*\
| Set the port timeouts |
\*-----------------------------------------*/
COMMTIMEOUTS timeouts = {0};
timeouts.ReadIntervalTimeout = 50;
timeouts.ReadTotalTimeoutConstant =50;
timeouts.ReadTotalTimeoutMultiplier =10;
timeouts.WriteTotalTimeoutConstant =50;
timeouts.WriteTotalTimeoutMultiplier =10;
SetCommTimeouts(file_descriptor, &timeouts);
#endif
@@ -502,6 +561,15 @@ void serial_port::serial_flush_tx()
\*---------------------------------------------------------*/
void serial_port::serial_break()
{
/*-----------------------------------------------------*\
| Windows-specific code path for serial break |
\*-----------------------------------------------------*/
#ifdef _WIN32
SetCommBreak(file_descriptor);
Sleep(1);
ClearCommBreak(file_descriptor);
#endif
/*-----------------------------------------------------*\
| Linux-specific code path for serial break |
\*-----------------------------------------------------*/
@@ -526,7 +594,14 @@ void serial_port::serial_break()
void serial_port::serial_set_rts(bool rts)
{
/*-----------------------------------------------------*\
| Linux-specific code path for serial break |
| Windows-specific code path for serial set RTS |
\*-----------------------------------------------------*/
#ifdef _WIN32
EscapeCommFunction(file_descriptor, SETRTS); //or CLRRTS
#endif
/*-----------------------------------------------------*\
| Linux-specific code path for serial set RTS |
\*-----------------------------------------------------*/
#ifdef __linux__
int RTS_flag;
@@ -535,7 +610,7 @@ void serial_port::serial_set_rts(bool rts)
#endif
/*-----------------------------------------------------*\
| MacOS-specific code path for serial break |
| MacOS-specific code path for serial set RTS |
\*-----------------------------------------------------*/
#ifdef __APPLE__
int RTS_flag;