Re: assertion "first != _Chain_Tail( &ready_queues[ index ] )"

[Sebastian Huber]

On 22/05/2019 04:34, Jython wrote:
finally i find it's usleep call causes that
    while(retry && ((RCC_BDCR & 0x02) == 0))  // External low-speed
    oscillator ready
    {
    retry--;

                usleep(5000);
                #if 0
                volatile int k = 0;
                (void)k;
                int j;
                for(j = 0; j < 1000; j++)
                    k = k + 1;
                #endif
    }


You must call usleep() in a task context, e.g. not during system 
initialization.

--
Sebastian Huber, embedded brains GmbH

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