WF200 hardware overview
The WF200 can be connected to a host using two different busses, SPI or SDIO. The selected bus has implications on the physical connection between the host and the WF200. Below are described two standard connection patterns for each bus configuration. For more detailed schematics, refer to the WF200 data sheet.
The WIRQ pin (pin 24) can be used as an alternative interrupt to SDIO_DAT1 (pin29).