Seeed Xiao and SPI - not working

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#1

Hi,

Just tried to get SPI working on an Seeed Xiao with arudino libs, code summary follows. I have created a bitbang version and that works fine

setup()
{
pinMode( 7, OUTPUT );  // chip select
pinMode( SCK, OUTPUT );
pinMode( MOSI, OUTPUT );
SPI.beginTransaction( SPISettings(1000000, MSBFIRST, SPI_MODE0) );
}

WriteReg(unsigned int Value)
{
digitalWrite( 7, false );
SPI.transfer16( Value );
digitalWrite( 7, true );
}

This felt like an easy thing and the bitbang work well enough in this case as its just driving relays but its always good to know what I’m doing wrong!

#2

so i had started with just SPI.begin() when that didnnnot work changed it to beginTransaction(…)

turns out you need both!

Self answered this time