AN3975

System implementation - FW

Doc ID 022170 Rev 1

11/26

4

System implementation - FW

4.1

PC (HyperTerminal) part

The firmware of the transparent link application for the PC part provides conversion of the

data coming from the USB to commands sent over UART (UART_B) to the power line mode.

The firmware also contains the USB stack for Virtual COM port class - see Figure 7.

Firmware project for PC part details

Programming environment

C Project, location of the project file:

/PC_USB_to_PRIME/Project/Virtual_COM_Port/EWARMv5/VirtualCOMPort.eww

(After decompression of the archive that comes with this application note.)

4.2

Power meter (RS485) part

The firmware of the transparent link application for the power meter part provides

conversion of the power line data commands coming from the UART (UART_B) to data sent

over UART (UART_A) to RS485 module which may be connected to any device using

RS485, e.g. power meter - see Figure 7.

Firmware project for power meter part details

Programming environment

IAR project written in embedded workbench for ARM IAR 5.50

C Project, location of the project file:

PMeter_RS485_to_PRIME/Project/Prime_to_RS485/EWARMv5/VirtualCOMPort.eww

(After decompression of the archive coming with this application note.)