Modifications

Thanks to its high throughput, the SPI bus are used for display, data acquisition, data transmission, etc.  

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''':

SPI bus are short (below 10cm) and uses '''3 wires for the data bus + a "Slave Select" wire per device''':

[[Fichier:ENG-CANSAT-PICO-HowTo-SPI.png]]

[[Fichier:ENG-CANSAT-PICO-HowTo-SPI.png]]

The following snip of code creates an instance of the {{fname|SPI(0)}} bus

The following snip of code creates an instance of the {{fname|SPI(0)}} bus

# SPI(0) : GP4=Miso, GP5=/SS, GP6=Sck, GP7=Mosi

# SPI(0) : GP4=Miso, GP5=/SS, GP6=Sck, GP7=Mosi

# reducing clock speed to 400 KHz

# 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>

</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.

{{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 ==

== Additional tutorials ==