hi wxz2006621:
I use https://github.com/ajaybhargav/lwip_nat to implement NAT function. In ESP32,the can transport ping、udp and tcp packet. Wireshark capture correct packet,but PC appcation can receive the packet.

IO34-IO39 without SPI funtion in IO_MUX table. Is true for IO34-IO39 can map to SPI MISO funtion?

Thank very much,It is very useful to me.

I need to buy ESP32-WROVER module but no kit.

Hi rudi !
Now I plan to use IO0 to do it.

I have the same problem.Now I can use GPIO16 to generate 50MHZ clk for PHY. But in new module ESP-WROVER use GPIO16 and GPIO17 for PSRAM,How disappointing!
olimex havd a new board,it use delay CMOS to deal this problem.Is there a suggested solution for Espressif ??

我们使用ESP32外挂PHY，在PHY CLK遇到两个方案选择，官方有没有推荐解决方法？
1、IO0设置为CLK_IN, 开机会影响BOOT 系统的正常启动，需要配合电源使能电路来控制PHY的晶振，这种电路复杂BOM成本增加！
2、IO16设置EMAC_CLK_OUT,输出50MHZ波形，这种电路简单成本低。但是ESP-WROVER模块在加入PSRAM模块后占用了IO16？
后期ESP-WROVER模块量产模块，都会占用IO16和IO17吗？
关于这两种方案接PHY,官方推荐哪一种？

where we can buy ESP32 WROVER and Kit Sample?

this function can communication with esp8266? and esp8266 have relevant API?

thank forr esponse! " the functionality to send (non-management) WiFi frames", this like 2.4G Frame with not connected??
Because the WIFI connection number limit, We need to a function with not connected, When need big data transmission in starting the WIFI connection.