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Ligne 142 :
Ligne 142 : + + + + − + + + − + − − − REPL on UART(0)
ENG-CANSAT-PICO-USER-GUIDE (voir la source)
Version du 26 février 2022 à 01:25
, 26 février 2022 à 01:25→UARTs
* '''AGND''' - Reference ground for analog reading.
* '''AGND''' - Reference ground for analog reading.
* '''ADC_VREF''' - Analog input voltage reference. It is the 3.3V with additional filtering. Do not applies any voltage to this pin, do not use it to supply power to the project.
* '''ADC_VREF''' - Analog input voltage reference. It is the 3.3V with additional filtering. Do not applies any voltage to this pin, do not use it to supply power to the project.
The ADC (''Analog To Digital'' converter) does offers 12 bits resolution. So the ADC returns a numeric value from 0 to 4095 for an applied voltage going from 0 to 3.3V .
This means that ADC resolution is 3.3V / 4095 = 0.0008058607 (so 0.8 mV).
=== UARTs ===
=== UARTs ===
The Pico have many buses but one must be highlighted, it is '''UART(0)'''. UART is often referred as serial port.
The Pico have many buses but one must be highlighted, it is '''UART(0)'''. UART is often referred as serial port.
MicroPython does offers an interactive command line interpreter named REPL (Read, Evaluate, Print Loop).
'''UART(0)''' is the prefered position to replicates the MicroPython REPL (MicroPython interactive command line interpreter) but is free to use for scripts.
REPL stand for ''Read, Evaluate, Print Loop''.
REPL is available over:
REPL is available over:
* USB connector
* USB connector
* UART(0) : just plug a [https://shop.mchobby.be/product.php?id_product=144 console cable] to get access to the REPL via the UART(0) RX & TX.
* can be made available over UART(0) then just plug a [https://shop.mchobby.be/product.php?id_product=144 console cable] on RX & TX to get access to the REPL via the UART(0) .
[[fichier:ENG-CANSAT-PICO-PINOUT-33.png]]
[[fichier:ENG-CANSAT-PICO-PINOUT-33.png]]
=== Special Pins ===
=== Special Pins ===