How to configure the SPI SERCOM of MKR Zero in UART or I2C mode?

Official Hardware MKR Family MKR Zero
1

I need either two user UART or two user I2C on my MKR project. Then my idea was to use the SERCOM associated to the SPI and change the mode to UART. But I cannot find how to change the mode of a SERCOM in arduino or an example. Could someone help me with this purpose?

2

what happens when you use the SERCOM dedicated to SPI for UART? is the SPI in the way? it shouldn't if SPI begin was not executed

3

I want to use this sercom as an additional UART in the MKR Zero. Is it possible to do this without disturbing the operation of the arduino platform (USB communication, etc)?

4

yes

5

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