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Dual Init of SPI on at91sam7x-based system


Hi
I have a small program to run tests with lwip. It worked. Then I updated from my ecos to the current version, built the library and built my program. When launching it, it produces the message:


ASSERT FAIL: <1>intr.cxx[506]void Cyg_Interrupt::attach() Interrupt vector not free.

When digging into this message, I find that the SPI-bus0 is initialized twice. The loop in hal_misc.c


for (p = &CONSTRUCTORS_START; p != CONSTRUCTORS_END; NEXT_CONSTRUCTOR(p))
(*p)();


calls the spi-bus0-initialization twice (copied from the debugger):

2 cyg_spi_at91_bus_init() spi_at91.c:196 0x00104eb0	
1 cyg_hal_invoke_constructors() hal_misc.c:213 0x00103f04

The first time p is 0x2068e0, the second time 0x2068e4.

And of course, this then produces the above assert fail-message. But why is this constructor-table set up this way? And how can I fix that?


I should add:
a) My little program does not use any spi-related stuff - only serial i/o and the net-interface.
b) My library was generated with spi-bus0 only. I had disabled spi-bus1 of the at91sam7x512 in configtool (CYGINT_DEVS_SPI_ARM_AT91_HAS_BUS1 = 0).


Thanks for advice - Robert

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