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Add JVS passthrough rewrite for linux and windows #41

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1ee08ef
Add JVS passthrough rewrite for linux and windows
bobbydilley Jun 27, 2026
29c6307
Fix the linux issues
bobbydilley Jun 27, 2026
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60 changes: 40 additions & 20 deletions src/loader/hardware/lindbergh/baseBoard.c
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Original file line number Diff line number Diff line change
Expand Up @@ -57,11 +57,12 @@ unsigned int sharedMemoryIndex = 0;
uint8_t sharedMemory[1024 * 32] = {0};

int selectReply = -1;
int jvsFileDescriptor = -1;
int jvsPacketSize = -1;

char serialString[1024] = {0};

unsigned char passthroughOutputBuffer[JVS_MAX_PACKET_SIZE], passthroughInputBuffer[JVS_MAX_PACKET_SIZE];

int initBaseboard()
{
char *sramPath = getConfig()->sramPath;
Expand All @@ -81,15 +82,11 @@ int initBaseboard()
#ifdef __linux__
if (getConfig()->emulateJVS == 0 && strcmp(getConfig()->jvsPath, "none") != 0)
{
jvsFileDescriptor = openJVSSerial(getConfig()->jvsPath);
if (jvsFileDescriptor < 0)
JVSPassthroughStatus status = initJVSPassthrough(getConfig()->jvsPath);
if (status != JVS_PASSTHROUGH_STATUS_OK)
{
printf("Error: Failed to open %s for JVS\n", getConfig()->jvsPath);
return -1;
printf("Warning: Failed to initialize JVS passthrough at %s\n", getConfig()->jvsPath);
}

initJVSSerial(jvsFileDescriptor);
startJVSFrameThread(&jvsFileDescriptor);
}
#endif

Expand Down Expand Up @@ -221,11 +218,15 @@ int baseboardIoctl(int fd, unsigned long request, void *data)
{
processPacket(&jvsPacketSize);
}
else if (jvsFileDescriptor >= 0)
else
{
JVSPassthroughStatus status = writeJVSFrame(inputBuffer, jvsCommand.srcSize);
if(status != JVS_PASSTHROUGH_STATUS_OK) {
printf("Error: Failed to write JVS frame, status: %d\n", status);
}

for (uint32_t i = 0; i < jvsCommand.srcSize; i++)
{
write(jvsFileDescriptor, &inputBuffer[i], 1);
if (inputBuffer[i] == 0xF0)
{
setSenseLine(3);
Expand Down Expand Up @@ -276,25 +277,44 @@ int baseboardIoctl(int fd, unsigned long request, void *data)

case BASEBOARD_PROCESS_JVS:
{
#ifdef __linux__
if (getConfig()->emulateJVS)
{
#endif
memcpy(&sharedMemory[jvsCommand.destAddress], outputBuffer, jvsPacketSize);
_data[2] = jvsCommand.destAddress;
_data[3] = jvsPacketSize;
_data[1] = 1; // Set the status to success
#ifdef __linux__
}
else if (jvsFileDescriptor >= 0)
else
{
JVSFrame frame = readJVSFrameFromThread();
memcpy(&sharedMemory[jvsCommand.destAddress], frame.buffer, frame.size);
_data[2] = jvsCommand.destAddress;
_data[3] = frame.size;
_data[1] = frame.ready;
if (getSenseLine() == 3)
{
char errorMessage[5] = {0xE0, 0x00, 0x02, 0x01, 0x03};
memcpy(&sharedMemory[jvsCommand.destAddress], errorMessage, 5);
_data[2] = jvsCommand.destAddress;
_data[3] = 5;
_data[1] = 1;
}
else
{
JVSPassthroughStatus status = readJVSFrame(passthroughInputBuffer, &jvsPacketSize);
if(status != JVS_PASSTHROUGH_STATUS_OK) {
printf("Error: Failed to read JVS frame, status: %d\n", status);
// If it times out then we can just set the system to error out
memcpy(&sharedMemory[jvsCommand.destAddress], "\x00", 1);
_data[2] = jvsCommand.destAddress;
_data[3] = 1;
_data[1] = 1; // Set the status to failure
}
else
{
memcpy(&sharedMemory[jvsCommand.destAddress], passthroughInputBuffer, jvsPacketSize);
_data[2] = jvsCommand.destAddress;
_data[3] = jvsPacketSize;
_data[1] = 1; // Set the status to success
}

}
}
#endif
}
break;

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