3 Replies Latest reply on Nov 23, 2020 5:32 AM by RakshithM_16

    Wi-Fi doesn't boot when snapping off the KitProg3 module

    PeTo_2990761

      Hello,

       

      I am running a Wi-Fi application on the PSoC6 Wi-Fi BT ProtoTypeing Kit (CY8CPROTO_062_4343W).

       

      I am trying to power it externally using VTARG + GND at 3.3V. However, the power supply connected to these pins also backfeeds into the KitProg3, using lots of energy.

       

      I snapped off the KitProg3 and can program just fine by supplying VTARG as noted in the user guide.

       

      The board boots and I can talk to it through my UART interface when powering externally with no KitProg3 connected.

       

      HOWEVER, the Wi-Fi will not initialize and it doesn't return an error.

       

      Here is the init code. I am using mbed-os, and a grab the default instance, and then do a dummy connect to get the MAC.

       

      When I power from USB via KitProg3 I see this (this is the expected behavior, seeing the "WLAN..."  messages):

       

      And when I power it through VTARG with 3V3, I see this, where the interface does not initialize (note the absence of "WLAN..." messages):

       

       

      Once I break off the KitProg3, is there any other mod that needs to be done? The User Guide clearly explains you need to power Vtarg on the board externally, which I do (with capacity to 300mA!), but the WiFi doesn't seem to power on.

       

      Thanks,

      Peter