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:
#define msg1 "AT\r\n"
#define msg2 "ATE0\r\n"
#define msg3 "AT+CFUN=1\r"
#define msg4 "AT+CNMI=0,0,0,0,0\r"
#define msg5 "AT+CPIN?\r"
#define msg6 "AT+CREG=1\r"
#define msg7 "AT+CGDCONT=1,\"IP\",\"airtelgprs.com\"\r"
#define msg8 "AT+CGDATA=\"PPP\",1\r"
#define msg9 "ATD*99***1#\r"
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) = 1
lwip_sendto(1, data="" short_size=40, flags=0x0 to=8.8.8.8 port=42405
ping: send 8.8.8.8
1. lwip_recvfrom(1, 0x40008cb8, 64, 0x0, ..)
2. lwip_recvfrom: top while sock->lastdata=0x0
4. lwip_recvfrom: netconn_recv err=-3, netbuf=0x0
5.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
Thanks
Rahul
log.txt