Hi Sebastian, classic one!
You send the messages in the block's constructor in an endless loop.
So, that constructor never finishes.
Thus, the block never can get message-connected. Thus, your messages
disappear.
You can't publish message in a constructor. Spawn off a thread in the
`start()` method to do that.
Best regards,
Marcus
On Thu, 2019-05-23 at 17:42 +0200, Sebastian Sahlin wrote:
> Hi,
>
> For learning purposes I'm trying to replicate the functionality of the
> Message Strobe block in Python, however I'm stumped by what should be a very
> basic function. I'm simply attempting to publish a message every x seconds:
>
> def __init__(self, period):
> gr.basic_block.__init__(self,
> name="msg_strobe",
> in_sig=None,
> out_sig=None)
>
> self.message_port_register_out(pmt.intern('msg_out'))
>
> while(True):
> self.send_message('Hello World')
> time.sleep(period)
>
> def send_message(self, string):
> self.message_port_pub(pmt.intern('msg_out'), pmt.intern(string))
>
> However there is no message published to the Message Debug block.
>
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