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Re: [lwip-users] Ping is not working in LWIP pppos
From: |
Sylvain Rochet |
Subject: |
Re: [lwip-users] Ping is not working in LWIP pppos |
Date: |
Fri, 5 Apr 2019 16:57:28 +0200 |
User-agent: |
Mutt/1.5.23 (2014-03-12) |
Hi Rahul,
On Fri, Apr 05, 2019 at 10:27:41AM +0000, rahul.mane . wrote:
> Hello ,
>
> I want to use LWIP stack (2.0.2) with pppos.I have NXP MC5748 board wi
> SIM800c interface with one UART channel.I have use following AT
> commands to configure GSM module:
>
> I am successfully getting following data from GSM module.
> status_cb: Connected our_ipaddr = 100.95.137.40 his_ipaddr =
> 192.168.254.254 netmask = 255.255.255.255 dns1 = 59.144.144.46
> dns2 = 59.144.127.117 Next step, I am trying to ping 8.8.8.8
> But I am getting Timeout error
> lwip_socket(PF_INET, SOCK_RAW, 1) = 1lwip_sendto(1, data=0x40040728,
> short_size=40, flags=0x0 to=8.8.8.8 port=42405ping: send 8.8.8.81.
> lwip_recvfrom(1, 0x40008cb8, 64, 0x0, ..)2. lwip_recvfrom: top while
> sock->lastdata=0x04. lwip_recvfrom: netconn_recv err=-3,
> netbuf=0x05.lwip_recvfrom(1): buf == NULL, error is "Timeout."!
> Is there any step i am missing to configure ?
> For more information I have attached log file
I guess it is because checksums are disabled. Could you try enabling
CHECKSUM_GEN_* and CHECKSUM_CHECK_* options ?
Sylvain
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