3.1 EVM Configuration

The major hardware modification on the hybrid wireless M-Bus or PLC system is to connect the UART pins (UART_TX, UART_RX and GND) between the LAUNCHXL-CC1310 and the TMDSPLCKITV4 EVM.

• Figure 8 shows UART pins 0n the TMDSPLCKITV4 connected to the LAUNCHXL-CC1310.
• The M3:P2-12 (PLC_SCIA_TX) pin in Figure 8 is connected to UART RX pin (DIO 2) on the LAUNCHXL-CC1310.
• M3:P2-14 (PLC_SCIA_RX) (Figure 8) connects to UART TX pin (DIO 3) on the LAUNCHXL-CC1310.
• The GND pin in the TMDSPLCKITV4 EVM, as shown in Figure 8, is connected to GND pin on the LAUNCHXL-CC1310.

Figure 8. UART Pins on TMDSPLCKITV4

As Figure 10 shows , an additional configuration change is to switch the SW2 position to OFF. Turning off the SW2 blocks UART communication with the mini-USB port in TMDSPLCKITV4, which allows the M3 module to communicate with the external device through the UART without interruptions.

Figure 9. SW2 Position in TMDSPLCKITV4 EVM