Hi guys I'm using LWIP 2.1.0 and FREERTOS . I want to use point to point over serial protocol and I'm using Sim800l this is the path I've gone until now
1 - I configured my sim800l using AT Command 2 - I defined a Context using AT+CGDCONT and set APN 3 - I Enter Data State using AT+CGDATA 4 - It started blink fast that indicates it attached a gprs session and went to ppp mode 5 - then I create a pppos using pppapi_pppos_create _ it calls my output callback to send 44 data (I will send the dump 6 - then set it to defualt netif and set its authentication in sequence 7 - Then I receive data in array of 32 bytes(I tried other values even 512) and send it to stack using pppos_input_tcpip here is the ppp log before gprs connection terminates automatically ppp phase changed[1]: phase=0 initialized PPPoSppp_connect[1]: holdoff=0 ppp phase changed[1]: phase=3 pppos_connect: unit 1: connecting ppp_start[1] ppp phase changed[1]: phase=6 pppos_send_config[1]: out_accm=FF FF FF FF ppp_send_config[1] pppos_recv_config[1]: in_accm=FF FF FF FF ppp_recv_config[1] ppp: auth protocols: PAP=1 CHAP=0 CHAP_MD5=0 sent [LCP ConfReq id=0x1 <asyncmap 0x0> <magic 0xcac73227> <pcomp> <accomp>] pppos_write[1]: len=24 ppp_start[1]: finished pppos_input[1]: got 32 bytes pppos_input[1]: Dropping bad fcs 0x3f99 proto=0xc021 pppos_input_drop: pbuf len=6, addr 100000e8 pppos_input[1]: Dropping bad fcs 0x2a65 proto=0xc021 pppos_input_drop: pbuf len=7, addr 100000e8 pppos_input[1]: got 32 bytes pppos_input[1]: Dropping bad fcs 0x4af4 proto=0xc021 pppos_input_drop: pbuf len=7, addr 100000e8 pppos_input[1]: Dropping bad fcs 0x2a65 proto=0xc021 pppos_input_drop: pbuf len=7, addr 100000e8 Does anyone have any idea what the problem is? -- Sent from: http://lwip.100.n7.nabble.com/lwip-users-f3.html _______________________________________________ lwip-users mailing list [email protected] https://lists.nongnu.org/mailman/listinfo/lwip-users
