4.1 TIDC-HYBRID-WMBUS-PLC Software Example

This example project is provided as a working example that may be used as baseline software for end-product development. The example runs on top of TI-RTOS in the ARM™ Cortex-M3. For PLC communication, the default configuration in the example is set to CENELEC-A, TMR ON and the TX level of 0x20 (maximum). The wireless M-Bus RF configuration is defined in smartrf_setting.c. The pre-compiled binaries are available in the directory of debug. The wireless M-Bus can be configured as one of three modes C-, T-, or S-mode) by enabling one of them in application/config.h. The debug_RF_only configuration run a standalone W-Mbus communication to test with the Hybrid W-Mbus and PLC solution. The debug_RF_only configuration enables ECHO_BACK_MODE macro to respond back to the Hybrid WMBUS-PLC node with the same data received from the node.

To run the software example with different PLC frequency bands of FCC or ARIB, change the following one-line code in the init_plcHandler() to TONEMASK_FCC_FULL_BAND or TONEMASK_FCC_ARIB_54. The TX power level and TMR configuration may also be changed in the same function.

Figure 13 shows the PLC frequency band.

The software example runs simultaneous transmissions (sending data to both RF and PLC channels). In addition, the RF-PLC repeater feature can be supported on top of the simultaneous transmissions by enabling RF_PLC_REPEATER macro definition in the software.

Figure 14 shows the overall software architecture that consists of five tasks shown in the following list:

• uartRXTask
• PLCStateMachineTask
• RFTxTask
• PLCTxTask
• applicationTask