pybytes deepsleep

[j_mor]

Hi all,

I've run into an issue using pybytes on my LoPy4 with Pysense shield.
I would like to get data from sensors, send them to Pybytes and go to deepsleep.
I do have sepadate funcions to get the data from sensors and to send the data.
Simplified code without any definitions and library imports:

sensorData = getSensorData()
sendData(sensorData)
py.setup_sleep(sleepTime)
py.go_to_sleep()

The getSensorData() returns JSON dictionary with all the sensor data.
The sendData() looks like this:

def sendData(data):
    pybytes.send_signal(1, data['batt'])
    pybytes.send_signal(2, data['temp1'])
    pybytes.send_signal(3, data['press'])
    .
    .

(two dots represent more lines in the function, 9 values are being sent, wanted to save some space :) )
The problem is that calling sendData() jumps out immediately and the actual data sending process takes on later. From what I understand pybytes.send_signal() sets up a new thread with given arguments and is done.

So when I run the code, LoPy goes to deepsleep before it actually sends out any data to Pybytes.

Is there any flag or variable I could check to see if my Lopy board is still sending out the data and in that case wait before going to deepsleep??

Something like:

sensorData = getSensorData()
sendData(sensorData)
while(True):
    if not "pybytes_still_sending_data":
        py.setup_sleep(sleepTime)
        py.go_to_sleep()

Possible workaround may be to put time.sleep() for like 20 sec before the deepsleep, but I would like to avoid this "solution".

Thank you,
j_mor

[claus]

I came up with a solution to this that for the moment seems to work. It is based on checking the length of the outgoing message queue (will fail if no mqtt connection)

for _ in range(10):
    in_queue = len(pybytes.__pybytes_connection.__connection.__mqtt._msgHandler._output_queue)
    if in_queue == 0:
        break
    time.sleep(1)

[claus]

I have hit this too. Maybe an optional callback parameter to send_signal which gets executed when done?

[Gijs]

Hi,
Ill put this on the feature list!
Gijs

[katoa_mangu]

@j_mor

I had like to know the answer to this too.

[leaf]

Would love to know this as well, or if there's any way to get confirmation that a message/signal was sent (with_ack)?