python - Pyserial failed to read full line after sending data -


i'm developping script pyserial send data microcontroller, microcontroller read data, process them, , send debug information python script.

my python script working without issue when reading data microcontroller. need send data microcontroller , start reading after that, data i'm reading not complete.

i should receive [tag1],10,11,12,[tag1],13,14,15\n don't received beginning of data end 1,12,[tag1],13,14,15\n

i'm doing:

serial.write(dataout) datain = serial.read(sizeofthedatatoreceive)

the issue not come microcontroller i'm sure of that, if i'm using putty send/receive data see full data.

i tried add delay in microcontroller code send data 10s after receiving data python, still it's not working everytime.

do have idea can cause ? com port opened when python script start , closed @ end of script.

you need clear read , write buffers:

serial.flushinput() serial.flushoutput()

then read data byte-wise:

serial.write(dataout) time.sleep(0.3) s='' while serial.inwaiting()>0:     b=serial.read(1) #   time.sleep(0.1)     s += b

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