Re: [lwip-users] FIXED - Re: inet_chksum.c misbehaving with compiler optimisation?

[Kieran Mansley]

On 24 Nov 2011, at 04:39, FreeRTOS Info wrote:

> The problem turned out to be in the library code called by my driver.
> The DMA code was using an incorrect index, causing the frame being
> written to a DMA buffer to overwrite the frame that was being
> transmitted by the DMA.  That also explains the corruption I was seeing
> on the wire.  Without optimisation the frame had already been transmitted.

Glad you have found your problem, and the explanation makes sense given the 
symptoms you were seeing.

Kieran