LibXR::HPMDmaManager Class Reference

HPM SDK dma_mgr 一次性初始化入口 / One-time initialization entry for the HPM SDK dma_mgr. More...

#include <hpm_dma.hpp>

Static Public Member Functions
static void	EnsureInitialized ()
	确保 dma_mgr_init() 已执行且只执行一次 / Ensure dma_mgr_init() has run, exactly once.

Detailed Description

HPM SDK dma_mgr 一次性初始化入口 / One-time initialization entry for the HPM SDK dma_mgr.

dma_mgr_init() 每个程序只能执行一次；使用 DMA 的 LibXR HPM 驱动在构造函数中调用 EnsureInitialized()，不得自行调用 dma_mgr_init()。应用代码若也使用 dma_mgr，同样应调用 EnsureInitialized() 而不是 dma_mgr_init()。 dma_mgr_init() must run exactly once per program. LibXR HPM drivers that use DMA call EnsureInitialized() from their constructors and never call dma_mgr_init() directly. Application code that also uses dma_mgr should call EnsureInitialized() instead of dma_mgr_init() as well.

Definition at line 46 of file hpm_dma.hpp.

Member Function Documentation

EnsureInitialized()

void HPMDmaManager::EnsureInitialized ( )

static

确保 dma_mgr_init() 已执行且只执行一次 / Ensure dma_mgr_init() has run, exactly once.

Note

仅在线程或启动上下文（如驱动构造函数）调用，不可在中断中调用 / Call only from thread or startup context such as driver constructors, never from an ISR.

Definition at line 13 of file hpm_dma.cpp.

{
  if (dma_mgr_initialized)
  {
    return;
  }
 
  dma_mgr_init();
  dma_mgr_initialized = true;
}

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The documentation for this class was generated from the following files:

• driver/hpm/hpm_dma.hpp
• driver/hpm/hpm_dma.cpp