ATI:
Quectel
EC20F
Revision: EC20CEFAGR06A15M4G
AT RESPONSE: AT+QCFG=“usbnet”
AT RESPONSE:
+QCFG: “usbnet”,1
硬件是STM32H7,用的 USB CDC host类驱动,自己有所改动。
目前可以读取MAC 地址,可以收到来自EC20的一些IGMP(IPV4)和 IPV6的信息。
发送ARP广播也是可以获得EC20的响应。但是DHCP discovery一直没有响应。
请问EC20 在ECM模式下是否需要打开DHCP server?
USBNET Rx: 46 (IGMP membership query)
01 00 5E 00 00 01 92 12 57 D8 07 E0 08 00 46 C0
00 20 00 00 40 00 01 02 04 17 00 00 00 00 E0 00
00 01 94 04 00 00 11 64 EE 9B 00 00 00 00
USBNET Rx: 110 (IPV6)
33 33 00 00 00 16 92 12 57 D8 07 E0 86 DD 60 00
00 00 00 38 00 01 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 FF 02 00 00 00 00 00 00 00 00
00 00 00 00 00 16 3A 00 05 02 00 00 01 00 8F 00
6B 6D 00 00 00 02 04 00 00 00 FF 05 00 00 00 00
00 00 00 00 00 00 00 00 00 02 04 00 00 00 FF 02
00 00 00 00 00 00 00 00 00 00 00 00 00 02