Max no of UART on SAMD21G18(Sparkfun Mini Board)

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SHARANYADAS
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Posted by SHARANYADAS: Thu. Feb 28, 2019 - 08:35 AM
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Hi

I am currently working on a project where I need to communicate with 5 different sensors via UART alternatively & upload the data to PC.Currently the Setup is running using a Arduino Uno using Software Uart but I have chosen SAMD21G18 board from Sparkfun(Sparkfun Mini) for the final design.Although,I don't have any board currently with me.The problem is,i am unable to understand how many UART ports can be configured on the particular board??The SERCOM concept is little bit tricky.

If someone worked with the particular board/has any idea on SERCOM configuration,please help!

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Kartman
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Posted by Kartman: Thu. Feb 28, 2019 - 09:49 AM
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Interesting as the Arduino Zero only implements two uarts with their framework. The SERCOM concept is simple, it's the pin muxing that can get a little tricky. You need to read the pin tables in the datasheet - make sure you choose the correct package.

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SHARANYADAS
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Posted by SHARANYADAS: Thu. Feb 28, 2019 - 10:14 AM (Reply to #2)
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As far my understanding goes,i can configure the following pins as UARTs.Please take a look...

 

 

PA10 - SER0:2/2:2 - Tx  //SER0:2 means Sercom0,Pad2

PA11 - SER0:3/2:3 - Rx

 

PA09 - SER0:1/2:1 - Rx

PA08 - SER0:0/2:0 - Tx

 

PA14 -  SER2:2/4:2 - Tx

PA15 - SER2:3/4:3 - Rx

 

PA20 -  SER5:2/3:2 - Tx

PA21 - SER5:3/3:3 - Rx

 

PA06 -  SER0:2 - Tx

PA07 - SER0:3 - Rx

 

Is my undersatnding correct??Also,which pins does they use regarding uart for pc connectivity??

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