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Altera_Forum's avatar
Altera_Forum
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14 years ago

"WARNING: TX SGDMA TImeout" and no data sent

Hy guys, I need your help, because trying to implement a SimpleSOcketSever-like NIOSII application. I built a basic NIOSII system including a 10/100/1000 TSE tx-sgda. rx_sgdma and so on. Everithin...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

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Check that the SGDMA's master (both data and descriptors) are connected to the correct memory, i.e. the memory the driver uses for packets and descriptors. If the SGDMA can't read its descriptor, it will probably lock up.

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Thanks DAIXIWEN,

I checked again the connection and everything looks fine, descriptor_read and _write Avalon-MM Masters connect to the on chip descriptor memory Avalon-MM slave, m_read avalon Master connects to the altmemddrbridge avalon slave.