[ECOS] Redboot Ethernet Driver Functions
Wed Mar 6 13:59:00 GMT 2002
I have a desire to send and recive simple UDP packets over a port in ecos.
Instead of bringing in the entire TCP/IP implementation does anyone know if
its possible to make calls to the redboot implementation of the TCP
functions? Specifically the functions in packages/redboot/current/src/udp.c
__udp_install_listener(...) and __udp_send(...)
I have allready successfully ping'd using the Redboot ethernet interface,
and I figure that since ICMP is allready working in this driver its not too
far of a stretch to use the UDP function calls.
On a side not my compile of ecos with the FEC ethernet driver and common
ethernet support fails thusly :
In function `fec_eth_init':
warning: asm operand 0 probably doesn't match constraints
invalid lvalue in assignment
warning: `proc_rev' might be used uninitialized in this function
inconsistent operand constraints in an `asm'
make: *** [src/if_fec.o.d] Error 1
line 260 of if_fec.c looks like :
CYGARC_MFSPR( proc_rev, CYGARC_REG_PVR );
and CYGARC_MFSPR from ppc_regs.h looks like :
#define CYGARC_MFSPR(_spr_, _v_) \
asm volatile ("mfspr %0, %1;" : "=r" (_v_) : "I" (_spr_));
I guess its that =r that's fouling things.
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