python for serial communication(1)

8/12/2019 Python for Serial Communication(1)

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Python for Serial CommunicationPython for Serial Communication

PyCon APAC 2011, SingaporePyCon APAC 2011, Singapore

Eka A. KurniawanEka A. Kurniawan@ekaakurniawan@ekaakurniawan


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Outline

Serial Communication Architecture

Drier !n"tallation

pySerial #o$ule

Demo on Con"ole

%&! 'ool Deelopment

Demo on %&!


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Serial CommunicationArchitecture

FPGA

USB

toUART

&A('

Connection

&S) Ca*le

Buffer

&S) to &A('

Drier

User

+P%A )oar$ aptop

(e-ue"t

Data +low Point o /iew


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Driver Installation

Silicon a*" CP210 &S) to &A(' )ri$ge /CP Drier"


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ySerial !o"ule

pySerial mo$ule encap"ulate" the acce"" or the "erial port. !tproi$e" *acken$" or Python running on in$ow", inu, )SD3po""i*ly any P4S!5 compliant "y"tem6, 7ython an$ !ronPython3.8E' an$ #ono6. 'he mo$ule name$ 9"erial: automatically "elect"the appropriate *acken$. ; Chri" iechti

)eneit"6 romhttp


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ySerial !o"uleBasic Functions

!mporting pySerial #o$ule

import serial

Serial Cla""

ser = serial.Serial('/dev/ttyUSB0', 9600)

open an$ i"4pen +unction"

ser.open()

ser.isOpen()

write +unction

ser.rite('!')


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ySerial !o"uleBasic Functions

inaiting +unction

ser.in"aitin#()

rea$ +unction

ser.read($%%)

ser.read(ser.in"aitin#())

clo"e +unction

ser.&lose()

pySerial AP!

http


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Demo on Console


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Ti #$ Chec%in& for 'ew Data

4pen Connection

i" *uer emptyBDi"play Data

%et Data

i" u"er inputB Sen$ Data

8o

e"

e"

8o

Polling #etho$

A$antage< Ea"y toDeelop

Di"a$antage"

python for serial communication(1)

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