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→UART Bus
[[Fichier:ENG-CANSAT-PICO-HowTo-UART.png|480px]]
[[Fichier:ENG-CANSAT-PICO-HowTo-UART.png|480px]]
{{ambox|text=It is advised to use the UART(0) on GP0 & GP1. Indeed, UART(1) overlaps the SPI(0) used for Radio module. Alternative UART(1) position used to replicates REPL session. See the [[ENG-CANSAT-PICO-USER-GUIDE|Pinout]] for details.}}
{{ambox|text=It is advised to use the UART(0) on GP0 & GP1. Indeed, UART(1) overlaps the SPI(0) used for Radio module. Alternative UART(1) position overlaps the I2C(0) bus. See the [[ENG-CANSAT-PICO-USER-GUIDE|Pinout]] for details.}}
<syntaxhighlight lang="python">
<syntaxhighlight lang="python">
from machine import UART
from machine import UART, Pin
# UART(0) on GP0 & GP1
uart = UART( 0, baudrate=9600)
# UART(1) on GP4 & GP5
# UART(1) on GP4 & GP5
# Alternate position for UART(1) by using Bus Fabric feature
# Alternate position for UART(1) by using Bus Fabric feature
uart = UART( 1, baudrate=9600, timeout=3000)
uart = UART( 1, rx=Pin(9), tx=Pin(8), baudrate=9600 )
</syntaxhighlight>
The following snip of code duplicates the REPL over the {{fname|UART(0)}} .
<syntaxhighlight lang="python">
from machine import UART
from os import dupterm
uart = UART(0, baudrate=19200, bits=8, parity=None, stop=1)
os.dupterm( uart, 1 )
</syntaxhighlight>
</syntaxhighlight>
The {{fname|UART}} class is [https://docs.micropython.org/en/latest/library/machine.UART.html fully described into MicroPython documentation].
The {{fname|UART}} class is [https://docs.micropython.org/en/latest/library/machine.UART.html fully described into MicroPython documentation].
The {{fname|dupterm()}} function is [https://docs.micropython.org/en/latest/library/os.html#terminal-redirection-and-duplication described here into the MicroPython documentation].
{{underline|Tips & Tricks:}}<br />One of the key parameter of UART is the {{fname|timeout}} parameter which indicates the timeout (in ms) to receive the end-of-line on {{fname|UART.readline()}} .
{{underline|Tips & Tricks:}}<br />One of the key parameter of UART is the {{fname|timeout}} parameter which indicates the timeout (in ms) to receive the end-of-line on {{fname|UART.readline()}} .