ENG-CANSAT-PICO-HowTo - Historique des versions

Admin : /* Analog Reading */

2025-07-31T15:04:23Z

Analog Reading

2025-07-31T15:02:27Z

Control an output

2025-07-31T14:53:52Z

SPI Bus

2025-07-31T14:45:08Z

UART Bus

2025-07-31T14:44:03Z

UART Bus

2025-07-31T14:43:03Z

UART Bus

2025-07-31T14:38:40Z

I2C Bus

2025-07-31T14:37:50Z

I2C Bus

2025-07-31T14:35:59Z

I2C Bus

2025-07-31T14:33:20Z

I2C Bus

← Version précédente		Version du 31 juillet 2025 à 15:04
Ligne 123 :		Ligne 123 :

	[[Fichier:ENG-CANSAT-FEATHER-PICO-HowTo-25.png]]		[[Fichier:ENG-CANSAT-FEATHER-PICO-HowTo-25.png]]
		+
		+	The CANSAT-V2 also offers the ANALOG Grove connector exposing the GPIO 27. User can use the Grove-To-Male cable + breadboard to make the experimentation.
		+
		+	[[Fichier:ENG-CANSAT-V2-Analog1.jpg\|480px]]

	<syntaxhighlight lang="python">		<syntaxhighlight lang="python">

← Version précédente		Version du 31 juillet 2025 à 15:02
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	[[Fichier:ENG-CANSAT-FEATHER-PICO-HowTo-22.png]]		[[Fichier:ENG-CANSAT-FEATHER-PICO-HowTo-22.png]]
		+
		+	The CANSAT-V2 also offers the DIGITAL 2 Grove connector exposing the GPIO 20. User can use the Grove-To-Male cable + breadboard to make the experimentation.
		+
		+	[[Fichier:ENG-CANSAT-V2-Digital2.jpg\|480px]]

	<syntaxhighlight lang="python">		<syntaxhighlight lang="python">

@@ Ligne 277 : / Ligne 277 : @@
 Thanks to its high throughput, the SPI bus are used for display, data acquisition, data transmission, etc.
-{{ambox|text=The Cansat RFM69 Radio module of Cansat kit do use {{fname|SPI(0)}} bus to exchange data with the MicroControler.}}
+{{ambox|text=The Cansat RFM Radio module of Cansat kit do use {{fname|SPI(0)}} bus to exchange data with the MicroControler.}}
 SPI bus are short (below 10cm) and uses '''3 wires for the data bus + a "Slave Select" wire per device''':
@@ Ligne 286 : / Ligne 288 : @@
 [[Fichier:ENG-CANSAT-PICO-HowTo-SPI.png]]
 The following snip of code creates an instance of the {{fname|SPI(0)}} bus
@@ Ligne 294 : / Ligne 297 : @@
 # SPI(0) : GP4=Miso, GP5=/SS, GP6=Sck, GP7=Mosi
 # reducing clock speed to 400 KHz
-spi = SPI( 0, baudrate=400000 )
+spi = SPI( 0, miso=Pin(4), mosi=Pin(7), sck=Pin(6), baudrate=400000 )
 </syntaxhighlight>
 {{underline|Tips & Tricks:}}<br />Under MicroPython the SS pin is not "hardware" tied to a given SPI bus. User can freely choose any pin as "Slave Select" pin.
 == Additional tutorials ==

@@ Ligne 258 : / Ligne 258 : @@
 from os import dupterm
-uart = UART(0, baudrate=19200, bits=8, parity=None, stop=1)
+uart = UART(0, rx=Pin(1), tx=Pin(0), baudrate=19200, bits=8, parity=None, stop=1)
 os.dupterm( uart, 1 ) # Pico Firmware must be recompile with dupterm()
 </syntaxhighlight>

@@ Ligne 241 : / Ligne 241 : @@
 # UART(0) on GP0 & GP1
-uart = UART( 0, rx=Pin(0), tx=Pin(1), baudrate=9600)
+uart = UART( 0, rx=Pin(1), tx=Pin(0), baudrate=9600)
 # UART(1) on GP4 & GP5
-uart = UART( 1, baudrate=9600, timeout=3000)
+uart = UART( 1, rx=Pin(1), tx=Pin(0), baudrate=9600, timeout=3000)
 # Alternate position for UART(1) by using Bus Fabric feature

@@ Ligne 228 : / Ligne 228 : @@
 {{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">
@@ Ligne 233 : / Ligne 241 : @@
 # UART(0) on GP0 & GP1
-uart = UART( 0, baudrate=9600)
+uart = UART( 0, rx=Pin(0), tx=Pin(1), baudrate=9600)
 # UART(1) on GP4 & GP5

@@ Ligne 194 : / Ligne 194 : @@
 {{ambox|text=We do highly recommend to use the I2C(0) bus  as it is connected to kit Qwiic connector and Grove connector.}}
-{{underline|'''Cansat V2'''}}}
+{{underline|'''Cansat V2 :'''}}
 [[Fichier:ENG-CANSAT-V2-I2C.jpg|480px]]
-{{underline|'''Cansat V1'''}}}
+{{underline|'''Cansat V1 :'''}}
 [[Fichier:ENG-CANSAT-FEATHER-PICO-I2C-02.png|480px]]
-{{underline|'''Instance of I2C bus'''}}}
+{{underline|'''Create an instance of I2C bus:'''}}
 <syntaxhighlight lang="python">

← Version précédente		Version du 31 juillet 2025 à 14:35
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	{{ambox\|text=We do highly recommend to use the I2C(0) bus as it is connected to kit Qwiic connector and UEXT connector.}}		{{ambox\|text=We do highly recommend to use the I2C(0) bus as it is connected to kit Qwiic connector and UEXT connector.}}
		+
		+	[[Fichier:ENG-CANSAT-V2-I2C.jpg\|480px]]

	[[Fichier:ENG-CANSAT-FEATHER-PICO-I2C-02.png\|480px]]		[[Fichier:ENG-CANSAT-FEATHER-PICO-I2C-02.png\|480px]]

@@ Ligne 197 : / Ligne 197 : @@
 <syntaxhighlight lang="python">
-from machine import I2C
+from machine import I2C, Pin
-i2c = I2C( 0 ) # sda=GP8, scl=GP9 @ 400 KHz (default)
+i2c = I2C( 0, sda=Pin(8), scl=Pin(8) ) # @ 400 KHz (default)
-# i2c = I2C( 0, freq=100000 ) # Reduce bus speed @ 100 KHz
+# i2c = I2C( 0, sda=Pin(8), scl=Pin(8), freq=100000 ) # Reduce bus speed @ 100 KHz
 </syntaxhighlight>