Peter Kampmann wrote:
Hi Sathya,
thanks a lot, that example quite helped me.
But as I want to use the lwip in C++ I get an error at
XIntc_RegisterHandler(XPAR_OPB_INTC_0_BASEADDR,
XPAR_OPB_INTC_0_ETHERNET_MAC_IP2INTC_IRPT_INTR,
(XInterruptHandler)XEmac_IntrHandlerFifo,
xemacif_ptr->instance_ptr);
the error is: undefined reference to `XEmac_IntrHandlerFifo'
Even if I tell the C++ Compiler to handle this code as c code via
#ifdef __cplusplus
extern "C" { ...
I get this error. What am I doing wrong?
A few ideas:
1)
You wrapped this? :
> XIntc_RegisterHandler(XPAR_OPB_INTC_0_BASEADDR,
> XPAR_OPB_INTC_0_ETHERNET_MAC_IP2INTC_IRPT_INTR,
> (XInterruptHandler)XEmac_IntrHandlerFifo,
> xemacif_ptr->instance_ptr);
or the declaration of XEmac_IntrHandlerFifo?
You need to wrap XEmac_IntrHandlerFifo.
No idea what the function looks like, but probably like this?
extern "C" void XEmac_IntrHandlerFifo(void*);
2)
Is the function really defined?
Try checking with the map file, if you have one,
or with something equivalent of nm or objdump.
Cheers,
Pedro Alves
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