source code of SPI interface with TLE75008 ( it is an ic used to drive multiple relays)
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SPC5 SPI example
https://community.st.com/s/question/0D50X00009Xkgq4SAB/solved-spi-slave-configuration-for-spc56el
SPC5 Discovery
https://www.st.com/en/evaluation-tools/spc56d-discovery.html
I believe the SPC5Studio should install/provide an number of sample projects and examples.
If not work with your local sales office, or find those offering training and consultant services for these parts.
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