ObjectFLEDDmaManager.cpp.hpp

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#include "platforms/arm/teensy/is_teensy.h"
 
#if defined(FL_IS_TEENSY_4X)  // Teensy 4.0/4.1 only
 
#include "ObjectFLEDDmaManager.h"
#include "fl/system/delay.h"
 
namespace fl {
 
// Define static members
DMAMEM uint32_t ObjectFLEDDmaManager::bitdata[BYTES_PER_DMA * 64] __attribute__((used, aligned(32)));
DMAMEM uint32_t ObjectFLEDDmaManager::bitmask[4] __attribute__((used, aligned(32)));
 
void ObjectFLEDDmaManager::acquire(void* owner) {
    // Wait for any current transmission to complete
    waitForCompletion();
 
    // Set ownership
    mCurrentOwner = owner;
}
 
void ObjectFLEDDmaManager::release(void* owner) {
    // Validate ownership
    if (mCurrentOwner != owner) {
        // Ownership mismatch - ignore for now
        return;
    }
 
    // Release ownership
    mCurrentOwner = nullptr;
}
 
void ObjectFLEDDmaManager::waitForCompletion() {
    // Spin-wait for DMA completion with periodic delays
    while (!dma3.complete()) {
        delayMicroseconds(10);
    }
}
 
bool ObjectFLEDDmaManager::isBusy() {
    return !dma3.complete();
}
 
} // namespace fl
 
#endif // FL_IS_TEENSY_4X