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Prepare the SAM C21 Xplained Pro

Set Supply Voltage to 3.3 V

Make sure that the jumper on the 3-pin header labeled VCC_SEL is set to 3.3 V, as seen in Figure 1. This will select 3.3 V as the supply voltage for the ATSAMC21J18A, peripherals and extension headers, which is important as we will power the mote from the latter.

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Figure 1: Xplained Pro VCC selection header.

Connect to Mote

Figure 12: Mote connected to the SAM C21 Xplained Pro.

The Xplained Pro has three extension headers (EXT1, EXT2, EXT3) with pins as listed in Table 1. In Figure 2 you can see the mote connected to EXT1 with the mapping listed in Table 2, but it doesnt matter which one you use: The pins for UART RX/TX are all connected to the same pins on the SAM C21.

Table 1: Xplained Pro Standard Extention Header.

Table 2: Xplained Pro to mote pin mapping.

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