Re: [lwip-users] illegal RTOS API call from ethernet receive interrupt

[address@hidden]

Michael Steinecke wrote:
> Your Stack Trace Locks like your Ethernet Driver or ethernetif.c is 
> not well implemented. Usually you should pass the received packet from 
> the IRQ context to a task, which calls LWIP.

Well, if you really know what you're doing you *could* use lwIP from ISR 
context, too. In that case, define mutexes to nothing and be sure to use 
lwIP only from the ETH ISR context.

However, users not aware of multithreading issues often make the mistake 
to call input functions from ETH ISR and call transmit functions from 
main loop or thread context. If you do it like that: this won't work and 
you should follow Miachel's suggestions.


Simon