3.3.1 Host PC with On-Board MCP2200 USB to UART Converter (PC Companion Mode)
The simplest method for using the RNWF02 Add On Board is to connect it to a host PC that supports USB CDC virtual COM (serial) ports using the on-board MCP2200 USB-to-UART converter. The user can send ASCII commands to the RNWF02PC Module using a terminal emulator application. In this case, the PC acts as the host device. In addition to UART, the Wake and Interrupt pin from the RNWF02PC Module are also connected to MCP2200’s GPIO pins. This ensures the low power modes are set via the host PC. The MCP2200 is configured in Reset condition until the USB supply is plugged in.
| Pin on MCP2200 | Pin on RNWF02PC Module | Description |
|---|---|---|
| TX | Pin19, UART1_RX | RNWF02PC Module UART1 receive |
| RX | Pin14, UART1_TX | RNWF02PC Module UART1 transmit |
| RTS | Pin16, UART1_CTS | RNWF02PC Module UART1 Clear- to-Send (active-low) |
| CTS | Pin15, UART1_ RTS | RNWF02PC Module UART1 Request- to-Send (active-low) |
| GP0 | — | — |
| GP1 | — | — |
| GP2 | Pin4, MCLR | RNWF02PC Module reset (active-low) |
| GP3 | Pin11, INT0/WAKE | To wake-up the RNWF02PC Module from its Deep Sleep (DS) and Extreme Deep Sleep (XDS) mode by the host |
| GP4 | Pin13, IRQ | Interrupt request (active-low) from the RNWF02PC Module to wake-up the host from its Sleep state |
| GP5 | — | — |
| GP6 | — | — |
| GP7 | — | — |