LPC546xx SDK2.2 Ethernet: code mistake

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LPC546xx SDK2.2 Ethernet: code mistake

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hlsamts
Contributor III

There is a mistake in the function ENET_DescriptorInit of SDK2.2:

The original order is:

  1. Determine, whether the RX interrupt is enabled:
    intRxEnable = (base->DMA_CH[channel].DMA_CHX_INT_EN & ENET_DMA_CH_DMA_CHX_INT_EN_RIE_MASK) ? true : false;
  2. Initialize TX descriptors:
    if (ENET_TxDescriptorsInit(base, bufferConfig, intTxEnable, channel) != kStatus_Success) ...
  3. Determine, whether the TX interrupt is enabled:
    intTxEnable = (base->DMA_CH[channel].DMA_CHX_INT_EN & ENET_DMA_CH_DMA_CHX_INT_EN_TIE_MASK) ? true : false;
  4. Initialize RX descriptors:
    if (ENET_RxDescriptorsInit(base, bufferConfig, intRxEnable, channel, doubleBuffEnable) != kStatus_Success) ...

The problem is: in step 2 the variable intTxEnable is used uninitialized.

One possible order of the steps would be: 3-2-1-4

Best regards,

Holger Sachs

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jeremyzhou
NXP TechSupport
NXP TechSupport

Hi Holger Sachs,

Thank you for your interest in NXP Semiconductor products and 
for the opportunity to serve you.
I'll contact with the AE team about this 'issue'.
Have a great day,

TIC

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