我有一个协程,等待设置事件:
@cocotb.coroutine
def wb_RXDR_read(self):
""" waiting util RXDR is read """
if not self._RXDR_read_flag:
while True:
yield self._RXDR_read_event.wait()
break
我想超时让它“屈服”。然后,我这样做了:
RXDR_timeout = Timer(250, units="us")
ret = yield [RXDR_timeout, self.wb_RXDR_read()]
if ret == RXDR_timeout:
self._dut._log.error("Timeout on waiting RXDR to be read")
raise TestError()
但是我得到这个错误:
2ns ERROR Coroutine i2c_write yielded something the scheduler can't handle
Got type: <type 'list'> repr: [<cocotb.triggers.Timer object at 0x7f2098cb1350>, <cocotb.decorators.RunningCoroutine object at 0x7f2098cb1610>] str: [<cocotb.triggers.Timer object at 0x7f2098cb1350>, <cocotb.decorators.RunningCoroutine object at 0x7f2098cb1610>]
Did you forget to decorate with @cocotb.coroutine?
我的协程用@ cocotb.coroutine装饰。如果我单单让它起作用:
yield self.wb_RXDR_read() # <- that works
但是我不能将其放在列表中。是否可以将协程放置在列表中以像unix select()一样阻止?还是保留给Trigger类?
答案 0 :(得分:0)
好的,我找到了解决方案。实际上,协程不能像时尚本身那样在选择中触发。它应该首先作为线程启动,并且要检测协程的结束,必须将.join()
方法放在yield列表中:
RXDR_timeout = Timer(250, units="us")
RXDR_readth = cocotb.fork(self.wb_RXDR_read())
ret = yield [RXDR_timeout, RXDR_readth.join()]
if ret == RXDR_timeout:
self._dut._log.error("Timeout on waiting RXDR to be read")
raise TestError()
要记住的是:
fork()
和join()