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Altera_Forum
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16 years ago

Altera TSE driver and example program for lwIP (1.3.2)

After many many requests and complaints about lack of support and/or documentation for support of lwIP for the Altera TSE, I have developed a drop-in TSE driver and example program and made this avai...
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Altera_Forum
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14 years ago

PETRAK,

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I'm new to this tse code and example program but it seems that in the implementation of timers when the variable lwip250mStimer reaches the limit of alt_u32 timers will not work anymore. Am I right ? according to this such program will work for approximately 50days.

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I would add to Bill’s comment that the timer code in the example is error prone. If any of XXX_TMR_INTERVAL constants happens to be not divisible by 250, you will get incorrect period LCM(XXX_TMR_INTERVAL, 250) for that timer. For example, if you simply enable AUTO_IP in your lwipopts.h, you will have 500ms period for autoip_tmr() instead of intended 100ms.

Dsl, The problem is not the wrapping itself, but that 2^32 is not divisible by 250.

Igor