Response not received :Timeout exception

[verossi]

Hi,
I am getting a Timeout exception("Response not received in the configured timeout") error.
I am trying out the basic example of SendDataSample.py. I am using 2 Xbee pro Series 1 and the firmware version is 10ec. The python version is 3.6 and the xbee library version is 1.1.1.
These are the errors :
......python-xbee/examples/communication/SendDataSample/SendDataSample.py", line 45, in main
device.send_data(remote_device, DATA_TO_SEND).
......lib\site-packages\digi\xbee\devices.py", line 1544, in send_data
return self._send_data_64(remote_xbee_device.get_64bit_addr(), data, transmit_options).
......\lib\site-packages\digi\xbee\devices.py", line 1028, in dec_function
return func(self, *args, **kwargs).
.....lib\site-packages\digi\xbee\devices.py", line 1038, in dec_function
response = func(*args, **kwargs).
....site-packages\digi\xbee\devices.py", line 1446, in _send_data_64
return self.send_packet_sync_and_get_response(packet).
.....lib\site-packages\digi\xbee\devices.py", line 2423, in send_packet_sync_and_get_response
raise TimeoutException("Response not received in the configured timeout.")
digi.xbee.exception.TimeoutException.

[diescalo]

Hello @verossi

The error could be caused because devices cannot communicate each other (maybe they are not configured with the same PAN ID or channel). Could you verify that they see each other please? You can do it using XCTU application.

If they can communicate each other, maybe the problem is that the timeout configured to get the answer is not enough (not likely, default timeout is 4 seconds I think). Anyway you can try changing it with:

device.set_sync_ops_timeout(10)

Regards!

[verossi]

Thank you @diescalo for the reply. I got them working. I reconfigured the devices to the parameter values that I was using before.
Have another quick question. Can we configure the remote devices from the local devices using "set_parameter" as is shown for the Local XBee configuration example?
I tried doing it but I suppose there should be a appropriate API where you would do a "send"(api) with the arguments as local device and destination device and the AT command to be sent(eg: ATAP etc) and the value to be set.
Is there an API as this?
Thank you!

[diescalo]

You can configure remote devices the same way you do with local ones. All the configuration methods available for local devices are also compatible with remote ones. So for example you can do

local_device = XBeeDevice("COM1", 9600)
local_device .open()

local_device.set_parameter("NI",  bytearray("Naruto", 'utf8'))

xbee_network = local_device.get_network()
remote_device = xbee_network.discover_device("Remote")

remote_device.set_parameter("NI",  bytearray("Sasuke", 'utf8'))

The API underneath knows that the device you are configuring is a remote node and it executes the proper code, so you don't need to worry about that.

Regards!

[diescalo]

@verossi Is this issue resolved for you? May I close your other issue too? I saw it was also related to a timeout problem.

Thanks!

[verossi]

Hi @diescalo,
Thanks for the reply I have tried the set parameters for remote device object but it does'nt work.
I would share the code for that later, but I have another timeout exception and I am unable to understand as to why this is the case. I am currently trying out the IOSamplingSample.py example to read an ADC value by passing to it the analog signal from the RC circuit which in turn has the PWM pin as its input. The code is as follows:
`from digi.xbee.devices import XBeeDevice

from digi.xbee.io import IOLine, IOMode

TODO: Replace with the serial port where your local module is connected to.

PORT = "COM5"

TODO: Replace with the baud rate of your local module.

BAUD_RATE = 57600

REMOTE_NODE_ID = "REMOTE"
maxVoltage = 3.3
adcDecimalResolution = 1023
DIGITAL_LINE = IOLine.DIO3_AD3
ANALOG_LINE = IOLine.DIO2_AD2 #Pin number 18 on RemoteXBee
PWM_ONE=IOLine.DIO11_PWM1 #Pin number 7 on Remote XBee
IO_SAMPLING_RATE = 5 # 5 seconds.

def main():
print(" +----------------------------------------------+")
print(" | XBee Python Library Handle IO Samples Sample |")
print(" +----------------------------------------------+\n")

device = XBeeDevice(PORT, BAUD_RATE)


device.open()

# Obtain the remote XBee device from the XBee network.
xbee_network = device.get_network()
remote_device = xbee_network.discover_device(REMOTE_NODE_ID)
print('connecting to remote device')
if remote_device is None:
    print("Could not find the remote device")
    exit(1)
print('connected to remote device')

# Set the local device as destination address of the remote.
remote_device.set_dest_address(device.get_64bit_addr())

#remote_device.set_io_configuration(DIGITAL_LINE, IOMode.DIGITAL_IN)
remote_device.set_io_configuration(ANALOG_LINE, IOMode.ADC)
remote_device.set_io_configuration(PWM_ONE,IOMode.PWM)

print('connected to remote device2')


# Enable DIO change detection in the remote device.
#remote_device.set_dio_change_detection({DIGITAL_LINE})

# Register a listener to handle the samples received by the local device.
coeff=maxVoltage/adcDecimalResolution
ADCvalues = []
print('input')
dutyCycle= float(input())
remote_device.set_pwm_duty_cycle(PWM_ONE,dutyCycle)
device.set_sync_ops_timeout(15)

while(True):
    #print('inside while.')

    #if (input()):
     #   dutyCycle= float(input())
    if dutyCycle not in range(0,101):
        if device is not None and device.is_open():
            device.close()
        thefile = open('test.txt', 'w')

        for item in ADCvalues:
            thefile.write("%s " % item)
            thefile.write("%s \n" % item)
        exit(1)


    # Enable periodic sampling every IO_SAMPLING_RATE seconds in the remote device.
    #remote_device.set_io_sampling_rate(IO_SAMPLING_RATE)

    ADC=remote_device.get_adc_value(ANALOG_LINE,)
    #print(ADC)
    AdcValue = coeff*ADC
    ADCvalues.append(dutyCycle)
    ADCvalues.append(AdcValue)
    print(AdcValue)

    #print(remote_device.get_adc_value(ANALOG_LINE))

main()`

Sorry for the messy code. I get an timeout exception for response not configured in the configured timeout, after a couple of values. I set the PWM duty cycle once and try to get the AdcValue (which is back to volts).
The related errors are:
*python-xbee/examples/io/IOSamplingSample/remade.py", line 93, in main
ADC=remote_device.get_adc_value(ANALOG_LINE)

*digi\xbee\devices.py", line 764, in get_adc_value
io_sample = self.read_io_sample()

*digi\xbee\devices.py", line 738, in read_io_sample
return IOSample(self.get_parameter("IS"))

*digi\xbee\devices.py", line 4776, in get_parameter
response = self._local_xbee_device.send_packet_sync_and_get_response(packet_to_send) # raises TimeoutException

*digi\xbee\devices.py", line 2423, in send_packet_sync_and_get_response
raise TimeoutException("Response not received in the configured timeout.")
digi.xbee.exception.TimeoutException

Anything that I'am doing wrong here?
Thanks for the help in advance.

[diescalo]

Hello @verossi ,

I have just tried your code with two 802.15.4 modules I have over here (I flashed them with firmware 10EC) and I got it working. Here is the output:

 +----------------------------------------------+
 | XBee Python Library Handle IO Samples Sample |
 +----------------------------------------------+

connecting to remote device
connected to remote device
connected to remote device2
input
100
0.3419354838709677
0.18064516129032257
0.14516129032258066
0.12580645161290321
0.11935483870967742
0.11290322580645161
0.11290322580645161
0.11935483870967742
0.12258064516129032
0.11935483870967742
0.11290322580645161

How far are your modules each other? For any reason they are losing communication between them. Have you tried increasing the 'sync operations timeout'? Is any of them configured to sleep?

[verossi]

Hi @diescalo , The modules are very close (like on the same table). I also get the values but get the timeout exception for some reason. I have tried increasing the sync operations timeout but after around 20 readings(o/p values), there is a pause as if the local is waiting for the data to receive and then after the sync ops timeout period, the timeout exception. I have not configured any of them to sleep.
Thank you.

[diescalo]

Hey @verossi,

What's the hardware version of the XBee modules? Could you send us the configuration profile of each module so we can replicate the setup here?

Thanks.

[verossi]

Hi @diescalo , thank you for the reply. The hardware version for the
Local XBee is : 1847 and Remote XBee: 1847. The other parameters are as follows:

Parameters	Local	Remote
CH	C	C
ID	1000	1000
MY	0	0
MM	802.15.4+MAX..[0]	802.15.4+MAX..[0]
RR	0	0
RN	0	0
NT	19	19
NO	0	0
CE	END DEVICE	END DEVICE
SC	1FFE	1FFE
SD	4	4
A1	0000B	0000B
A2	000B	000B
AI	0	0
EE	DISABLE	DISABLE
NI	LOCAL	REMOTE
PL	HIGHEST	HIGHEST
CA	2C	2C
SM	NO SLEEP	NO SLEEP
ST	1388	1388
SP	0	0
DP	3E8	3E8
SO	0	0
BD	57600	57600
NB	NO PARITY	NO PARITY
RO	1	1
AP	API ENABLED	API DISABLED
D8	DISABLED	DISABLED
D7	CTS FLOW CTRL	CTS FLOW CTRL
D6	DISABLED	DISABLED
D5	ASSOC INDICATOR	ASSOC INDICATOR
D4	DISABLED	DISABLED
D3	DISAABLED	DISABLED
D2	ADC	ADC
D1	DISABLED	DISABLED
D0	DISABLED	DISABLED
PR	FF	FF
IU	ENABLED	ENABLED
IT	1	1
IC	0	0
IR	3E8	3E8
P0	PWM	PWM
P1	PWM	Pwm
PT	FF	FF
RP	5	28
IA	FFFFFFFFFFFFFFFF	FFFFFFFFFFFFFFFF
TO	FF	FF
T1	FF	FF
T2	FF	FF
T3	FF	FF
T4	FF	FF
T5	FF	FF
T6	FF	FF
T7	FF	FF
VR	10EC	10EC
HV	1847	1847
EC	0	0
EA	783	40
DD	10000	10000
CT	64	64
GT	3E8	3E8
CC	2B	2B

These are the configuration parameters.
Thank you.

[verossi]

Hi @diescalo , any ideas how to solve this issue?

[diescalo]

Hello @verossi

Several advises about your setup & code:

• Why did you setup the IR value in the remote module if you are asking for the ADC value constantly? I mean, your IR configuration makes the local and remote modules to report an IO sample every second, but your code is already asking for IO samples to the remote module. If you don't need those automatic sample reports it I would configure it to 0.
• You are executing ADC = remote_device.get_adc_value(ANALOG_LINE, ) constantly, which can be a bit stressing for the modules. I would wait some time (200ms or so) between requests.
• You can put ADC = remote_device.get_adc_value(ANALOG_LINE, ) inside a try/except block. So if you get any timeout (or any other error) in one request, it can continue with the next one, without stopping the application:

You could rewrite the piece of code that reads the remote ADC value (the while loop) to something like this:

    while True:
        if dutyCycle not in range(0, 101):
            if device is not None and device.is_open():
                device.close()
            thefile = open('test.txt', 'w')

            for item in ADCvalues:
                thefile.write("%s " % item)
                thefile.write("%s \n" % item)
            exit(1)

        try:
            remote_adc = remote_device.get_adc_value(ANALOG_LINE)
            ADCvalue = coeff * remote_adc
            ADCvalues.append(dutyCycle)
            ADCvalues.append(ADCvalue)
            print(ADCvalue)
        except TimeoutException:
            print('Error getting remote ADC value > Timeout reading remote ADC')
        except Exception as e:
            print('Error getting remote ADC value > %s' % str(e))

        time.sleep(0.2)

Also, next time you can use XCTU to export a configuration profile instead of writing the configuration table manually =) https://www.digi.com/resources/documentation/digidocs/90001458-13/default.htm#task/t_save_configuration_profile.htm%3FTocPath%3DConfigure%2520your%2520modules%7C_____6

Diego.

[diescalo]

Hello @verossi,

Is your problem fixed with the suggestions I gave to you?

[diescalo]

I'm closing this issue assuming the timeout problems you were having are fixed with the suggestions provided.