Note: To operate the RNWF02 Add On Board in PC Companion mode, ensure to place the jumper cap on J201.1,
J201.2, as illustrated in the above image.
The simplest method to use the RNWF02 Add On Board is to
connect it to a PC host 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 RNWF02 Module using a terminal emulator application.
In this case, the PC acts as the host device. In addition to UART, Wake and Interrupt
pin from RNWF02 Module are also connected to
MCP2200’s GPIO pins. This enables to set low power modes via Host PC. The MCP2200 is
configured in Reset condition until the USB supply is plugged in.Figure 4-2. AT Commands Terminal
Table 4-1. RNWF02 Connection to MCLR, INT0/WAKE, IRQ
Pin on MCP2200
Pin on RNWF02PF Module
Description
GP0
NC
NC
GP1
NC
NC
GP2
MCLR
RNWF02 Module Reset
GP3
INT0/WAKE
Input pin to RNWF02 Module to
bring out from the Deep sleep/Extreme Deep sleep mode to the WAKE
mode.
GP4
IRQ
Output pin from RNWF02 Module to
indicate data activity.
