PPPoS_PPPoE

rt-thread ec600u 模块 ppp 拨号问题

发布于 2025-06-23 15:04:17 浏览：173 订阅该版

请问一下，在 rt-thread v5.2.1 系统使用 ppp 拨号功能，模块是 ec600u，基于 ec20 模块代码修改，ppp 拨号成功，但是 ip 和 gw 都是 0.0.0.0。这个可能是什么问题？

我做了以下尝试，依然存在问题：
1. 关闭串口 DMA 功能
2. 关闭 lwip2.0.3 硬件校验功能

```shell
\ | /
- RT -     Thread Operating System
 / | \     5.2.1 build Jun 23 2025 14:26:26
 2006 - 2024 Copyright by RT-Thread team
lwIP-2.0.3 initialized!
[D/ppp.ec20] ppp ec20 is registering ppp_device
[I/ppp.dev] ppp_device(pp) register successfully.
[I/sal.skt] Socket Abstraction Layer initialize success.
[D/ppp.dev] (uart0) is used by ppp_device.
[D/ppp.dev] pppapi_pppos_create has created a protocol control block.
[D/ppp.dev] pppapi_set_default has set a default route.
[D/ppp.dev] ppp_set_usepeerdns has set a dns number.
power on ec600u
[D/ppp.dev] Creat a thread to creat ppp recieve function successful.
msh />[D/ppp.chat] (uart0) has control by modem_chat.
[D/ppp.chat] <tx: AT, want: OK, retries: 5, timeout: 3> running
[D/ppp.chat] <tx: AT, want: OK, retries: 5, timeout: 3> transmit --> modem
[D/ppp.chat] <tx: AT, want: OK, retries: 5, timeout: 3> success
[D/ppp.chat] <tx: ATE0, want: OK, retries: 1, timeout: 1> running
[D/ppp.chat] <tx: ATE0, want: OK, retries: 1, timeout: 1> transmit --> modem
[D/ppp.chat] <tx: ATE0, want: OK, retries: 1, timeout: 1> success
[D/ppp.chat] <tx: ATI, want: OK, retries: 1, timeout: 10> running
[D/ppp.chat] <tx: ATI, want: OK, retries: 1, timeout: 10> transmit --> modem
[D/ppp.chat] <tx: ATI, want: OK, retries: 1, timeout: 10> success
[D/ppp.chat] <tx: AT+CSUB, want: OK, retries: 1, timeout: 10> running
[D/ppp.chat] <tx: AT+CSUB, want: OK, retries: 1, timeout: 10> transmit --> modem
[D/ppp.chat] <tx: AT+CSUB, want: OK, retries: 1, timeout: 10> success
[D/ppp.chat] <tx: AT+CSQ, want: OK, retries: 1, timeout: 10> running
[D/ppp.chat] <tx: AT+CSQ, want: OK, retries: 1, timeout: 10> transmit --> modem
[D/ppp.chat] <tx: AT+CSQ, want: OK, retries: 1, timeout: 10> success
[D/ppp.chat] <tx: AT+CPIN?, want: READY, retries: 1, timeout: 10> running
[D/ppp.chat] <tx: AT+CPIN?, want: READY, retries: 1, timeout: 10> transmit --> modem
[D/ppp.chat] <tx: AT+CPIN?, want: READY, retries: 1, timeout: 10> success
[D/ppp.chat] <tx: AT+COPS?, want: OK, retries: 1, timeout: 10> running
[D/ppp.chat] <tx: AT+COPS?, want: OK, retries: 1, timeout: 10> transmit --> modem
[D/ppp.chat] <tx: AT+COPS?, want: OK, retries: 1, timeout: 10> success
[D/ppp.chat] <tx: AT+CGREG?, want: OK, retries: 1, timeout: 10> running
[D/ppp.chat] <tx: AT+CGREG?, want: OK, retries: 1, timeout: 10> transmit --> modem
[D/ppp.chat] <tx: AT+CGREG?, want: OK, retries: 1, timeout: 10> success
[D/ppp.chat] <tx: AT+CGDCONT=1,"IP","CTNET", want: OK, retries: 1, timeout: 5> running
[D/ppp.chat] <tx: AT+CGDCONT=1,"IP","CTNET", want: OK, retries: 1, timeout: 5> transmit --> modem
[D/ppp.chat] <tx: AT+CGDCONT=1,"IP","CTNET", want: OK, retries: 1, timeout: 5> success
[D/ppp.chat] <tx: ATD*99#, want: CONNECT, retries: 1, timeout: 30> running
[D/ppp.chat] <tx: ATD*99#, want: CONNECT, retries: 1, timeout: 30> transmit --> modem
[D/ppp.chat] <tx: ATD*99#, want: CONNECT, retries: 1, timeout: 30> success
[D/ppp.chat] (uart0) has control by ppp_device.
[I/ppp.dev] ppp_device connect successfully.

msh />ifconfig
network interface device: pp (Default)
MTU: 1500
MAC: 95 45 68 39 68 52 
FLAGS: UP LINK_DOWN INTERNET_DOWN DHCP_DISABLE
ip address: 0.0.0.0
gw address: 0.0.0.0
net mask  : 255.255.255.255
dns server #0: 218.85.152.99
dns server #1: 218.85.157.99
```