[En-Nut-Discussion] Harware SPI usage

[Ole Reinhardt]

Hi,

> Definitely not. Nut/OS is a cooperative tasker. EnterCritical blocks 
> preemptive context switching. Only interrupts are preemptive with 
> Nut/OS, threads are not. As long as your thread is not blocked by I/O or 
> timer, the thread context will not switch.

At least the at91_spi.c driver seems to be blocking. In this case it
could be possible to trigger a race condition.

Bye,

Ole


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