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resolved: CPU usage for FTDI peripherals (#31)

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Resolved CPU usage for FTDI peripherals.
This commit was merged in pull request #31.
This commit is contained in:
Valentin Boulanger
2025-11-12 11:10:43 +00:00
parent 6dd555265c
commit 121a14ac61
1 changed files with 31 additions and 36 deletions
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67
hardware/cpp/src/dmxSender.cpp
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@@ -66,17 +66,6 @@ DMXError DMXDevice::connect(char* serialNumber){
return DMX_SET_FLOW_ERROR;
}
std::cout << " [DMXSENDER] " << "DMXDevice set up!" << std::endl;
std::cout << " [DMXSENDER] " << "Preparing sending job..." << std::endl;
// Send the DMX frames
std::thread updateThread([this]() {
this->sendDMX(ftHandle);
});
updateThread.detach();
std::cout << " [DMXSENDER] " << "Sending job executed!" << std::endl;
std::cout << " [DMXSENDER] " << "DMXDevice connected!" << std::endl;
return DMX_OK;
}
@@ -84,7 +73,15 @@ DMXError DMXDevice::connect(char* serialNumber){
// Activate the DMX flow
DMXError DMXDevice::activate(){
std::cout << " [DMXSENDER] " << "Activating the DMXDevice..." << std::endl;
isOutputActivated.store(true);
// Send the DMX frames
std::thread updateThread([this]() {
this->sendDMX(ftHandle);
});
updateThread.detach();
std::cout << " [DMXSENDER] " << "DMXDevice activated!" << std::endl;
return DMX_OK;
}
@@ -142,32 +139,30 @@ FT_STATUS DMXDevice::sendBreak(FT_HANDLE ftHandle) {
// Continuously send the DMX frame
void DMXDevice::sendDMX(FT_HANDLE ftHandle) {
while (true) {
if(isOutputActivated){
// Send the BREAK
ftStatus = sendBreak(ftHandle);
if (ftStatus != FT_OK) {
std::cout << " [DMXSENDER] " << "Unable to send break signal! Deactivating output..." << std::endl;
deactivate();
continue;
}
// Send the MAB
std::this_thread::sleep_for(std::chrono::microseconds(MAB_DURATION_US));
DWORD bytesWritten = 0;
// Send the DMX frame
ftStatus = FT_Write(ftHandle, dmxData, DMX_CHANNELS, &bytesWritten);
if (ftStatus != FT_OK || bytesWritten != DMX_CHANNELS) { // Error detected when trying to send the frame. Deactivate the line.
std::cout << " [DMXSENDER] " << "Error when trying to send the DMX frame! Deactivating output..." << std::endl;
deactivate();
continue;
}
// Wait before sending the next frame
std::this_thread::sleep_for(std::chrono::microseconds(INTERVAL - BREAK_DURATION_US - MAB_DURATION_US));
while (isOutputActivated) {
// Send the BREAK
ftStatus = sendBreak(ftHandle);
if (ftStatus != FT_OK) {
std::cout << " [DMXSENDER] " << "Unable to send break signal! Deactivating output..." << std::endl;
deactivate();
continue;
}
// Send the MAB
std::this_thread::sleep_for(std::chrono::microseconds(MAB_DURATION_US));
DWORD bytesWritten = 0;
// Send the DMX frame
ftStatus = FT_Write(ftHandle, dmxData, DMX_CHANNELS, &bytesWritten);
if (ftStatus != FT_OK || bytesWritten != DMX_CHANNELS) { // Error detected when trying to send the frame. Deactivate the line.
std::cout << " [DMXSENDER] " << "Error when trying to send the DMX frame! Deactivating output..." << std::endl;
deactivate();
continue;
}
// Wait before sending the next frame
std::this_thread::sleep_for(std::chrono::microseconds(INTERVAL - BREAK_DURATION_US - MAB_DURATION_US));
}
}