Wi-Fi&Bluetooth Module Series
AF20_Hardware_Design
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3.5. Wi-Fi Application Interface
The following figure shows the Wi-Fi application interface connection between AF20 and AG35.
Figure 5: Wi-Fi Application Interface Connection
3.5.1. WLAN_EN
WLAN_EN is used to control the Wi-Fi function of AF20. Wi-Fi function will be enabled when WLAN_EN is
at high level.
Table 6: Pin Definition of WLAN_EN
WLAN_EN is a sensitive signal, and thus should be ground shielded and routed as close as possible to
AF20 module.
1.
AT+QWIFI=1
can be used to switch on the power supply (VDD_3V3) and enable Wi-Fi function.
2.
AT+QWIFI=0
can be used to disable Wi-Fi function.
Pin Name
Pin No. I/O
Description
Comment
WLAN_EN
9
DI
WLAN enable control
1.8 V power domain.
Active high.
NOTE
NOTE