PPPoS works with open broker, but not with AWS IOT (SIM800L)

[ashwinpromethean]

Hi,

I am trying to connect ESP32 to the internet using a SIM800L. I have tried connecting to a few open source brokers on port 1883 (like iot.eclipse.org), and it works well. But the moment I try to connect to AWS-IOT, it stops connecting and PPP starts disconnecting. Note that I am able to connect to AWS IOT over Wifi easily.

The console output i get are as follows after restart : [Aug 18 15:31:04.919] mgos_ota_http_client Init done, ota_lib=(null), ota handler 1 [Aug 18 15:31:04.926] mgos_ota_shadow_init OTA over shadow initialised [Aug 18 15:31:04.932] mgos_wifi_setup WiFi mode: off [Aug 18 15:31:04.942] mgos_http_server_ini HTTP server started on [80] [Aug 18 15:31:04.942] mgos_pppos_create PPPoS UART2, 9600, fc off, APN 'internet' [Aug 18 15:31:04.953] mgos_provision_init Factory reset via button: pin 0 (enabled), hold_ms 0 (reset on reboot) [Aug 18 15:31:04.973] button_timer_cb Button released, NOT resetting [Aug 18 15:31:04.974] mg_rpc_channel_mqtt 0x3ffb0b00 esp32_1D1CD0/rpc [Aug 18 15:31:04.981] mg_rpc_channel_uart 0x3ffb0f74 UART0 [Aug 18 15:31:04.990] mgos_init Init done, RAM: 226188 total, 177848 free, 175572 min free [Aug 18 15:31:05.298] LED GPIO: 21 button GPIO: 0 [Aug 18 15:31:05.306] mgos_aws_shadow_init Device shadow name: esp32_1D1CD0 (token b5b66125) [Aug 18 15:31:05.313] mgos_pppos_uart_disp Connecting (UART2, APN 'internet')... [Aug 18 15:31:05.322] mongoose_poll New heap free LWM: 155800 [Aug 18 15:31:05.322] mgos_net_on_change_c PPP: disconnected [Aug 18 15:31:07.722] mgos_net_on_change_c PPP: connecting [Aug 18 15:31:10.754] mgos_pppos_uart_disp Command timed out: ATH [Aug 18 15:31:10.754] mgos_pppos_uart_disp Connecting (UART2, APN 'internet')... [Aug 18 15:31:10.764] mgos_net_on_change_c PPP: disconnected [Aug 18 15:31:13.263] mgos_net_on_change_c PPP: connecting [Aug 18 15:31:13.835] mgos_net_on_change_c PPP: connected [Aug 18 15:31:13.835] mgos_pppos_uart_disp Starting PPP, user '' [Aug 18 15:31:13.844] mongoose_poll New heap free LWM: 151592 [Aug 18 15:31:16.925] mongoose_poll New heap free LWM: 151372 [Aug 18 15:31:16.931] mongoose_poll New heap free LWM: 151296 [Aug 18 15:32:26.195] mgos_pppos_status_cb Error 6 (phase 0), reconnect [Aug 18 15:32:26.195] mgos_pppos_uart_disp Connecting (UART2, APN 'internet')... [Aug 18 15:32:26.206] mgos_net_on_change_c PPP: disconnected [Aug 18 15:32:28.613] mgos_net_on_change_c PPP: connecting [Aug 18 15:32:31.645] mgos_pppos_uart_disp Command timed out: ATH [Aug 18 15:32:31.645] mgos_pppos_uart_disp Connecting (UART2, APN 'internet')... [Aug 18 15:32:31.655] mgos_net_on_change_c PPP: disconnected [Aug 18 15:32:34.154] mgos_net_on_change_c PPP: connecting [Aug 18 15:32:37.226] mgos_pppos_uart_disp Command timed out: ATH [Aug 18 15:32:37.226] mgos_pppos_uart_disp Connecting (UART2, APN 'internet')...

The hexdump looks like this : [Aug 18 15:37:06.449] mgos_pppos_uart_disp Connecting (UART2, APN 'internet')... [Aug 18 15:37:06.459] mgos_net_on_change_c PPP: disconnected [Aug 18 15:37:08.957] mgos_net_on_change_c PPP: connecting [Aug 18 15:37:08.989] 0000 5d d6 7e 0d 0a 4e ].~..N [Aug 18 15:37:11.990] mgos_pppos_uart_disp Command timed out: ATH [Aug 18 15:37:11.990] mgos_pppos_uart_disp Connecting (UART2, APN 'internet')... [Aug 18 15:37:12.000] mgos_net_on_change_c PPP: disconnected [Aug 18 15:37:14.418] mgos_net_on_change_c PPP: connecting [Aug 18 15:37:14.450] 0000 4f 20 43 41 52 52 O CARR [Aug 18 15:37:17.450] mgos_pppos_uart_disp Command timed out: ATH [Aug 18 15:37:17.450] mgos_pppos_uart_disp Connecting (UART2, APN 'internet')... [Aug 18 15:37:17.460] mgos_net_on_change_c PPP: disconnected [Aug 18 15:37:19.959] mgos_net_on_change_c PPP: connecting [Aug 18 15:37:19.990] 0000 49 45 52 0d 0a 0d IER... [Aug 18 15:37:23.021] mgos_pppos_uart_disp Command timed out: ATH [Aug 18 15:37:23.021] mgos_pppos_uart_disp Connecting (UART2, APN 'internet')... [Aug 18 15:37:23.031] mgos_net_on_change_c PPP: disconnected [Aug 18 15:37:25.529] mgos_net_on_change_c PPP: connecting [Aug 18 15:37:25.561] 0000 0a 4f 4b 0d 0a 0d .OK... [Aug 18 15:37:25.593] 0000 0a 4f 4b 0d 0a 0d .OK... [Aug 18 15:37:25.628] 0000 0a 4f 4b 0d 0a 0d 0a 4f 4b 0d 0a .OK....OK.. [Aug 18 15:37:25.691] 0000 0a 0d 0a 4f 4b 0d 0a ...OK.. [Aug 18 15:37:25.737] 0000 0a 0d 0a 4f 4b 0d 0a 0d 0a 4f 4b 0d ...OK....OK. [Aug 18 15:37:25.745] mgos_pppos_uart_disp Starting PPP, user '' [Aug 18 15:37:25.750] 0000 7e ff 7d 23 c0 21 7d 21 7d 21 7d 20 7d 34 7d 22 ~.}#.!}!}!} }4}" [Aug 18 15:37:25.756] 0010 7d 26 7d 20 7d 20 7d 20 7d 20 7d 25 7d 26 7d 27 }&} } } } }%}&}' [Aug 18 15:37:25.763] 0020 af 34 4b 7d 27 7d 22 7d 28 7d 22 f9 20 7e .4K}'}"}(}". ~ [Aug 18 15:37:25.769] mongoose_poll New heap free LWM: 150796 [Aug 18 15:37:25.776] mgos_net_on_change_c PPP: connected [Aug 18 15:37:25.872] 0000 0a 0d 0a 4f 4b 0d 0a 0d 0a 4f 4b 0d 0a 0d 0a 4f ...OK....OK....O [Aug 18 15:37:25.878] 0010 4b 0d 0a 0d 0a 4f 4b 0d 0a 0d 0a 4f 4b 0d 0a 0d K....OK....OK... [Aug 18 15:37:25.884] 0020 0a 4f 4b 0d 0a 41 54 45 .OK..ATE [Aug 18 15:37:25.891] 0000 30 0d 0d 0a 4f 4b 0d 0a 0d 0a 4f 4b 0d 0a 0d 0a 0...OK....OK.... [Aug 18 15:37:25.897] 0010 43 4f 4e 4e CONN [Aug 18 15:37:25.904] 0000 45 43 54 0d 0a 7e ff 7d 23 c0 21 7d ECT..~.}#.!} [Aug 18 15:37:28.865] 0000 21 7d 21 7d 20 7d 32 7d 22 7d 26 7d 20 7d 2a 7d !}!} }2}"}&} }} [Aug 18 15:37:28.871] 0010 20 7d 20 7d 23 7d 24 c0 23 7d 27 7d 22 7d 28 7d } }#}$.#}'}"}(} [Aug 18 15:37:28.877] 0020 22 55 83 7e 7e ff 7d 23 "U.~~.}# [Aug 18 15:37:28.884] 0000 7e ff 7d 23 c0 21 7d 24 7d 21 7d 20 7d 28 7d 23 ~.}#.!}$}!} }(}# [Aug 18 15:37:28.890] 0010 7d 24 c0 23 2c d4 7e }$.#,.~ [Aug 18 15:37:28.897] mongoose_poll New heap free LWM: 147368 [Aug 18 15:37:28.904] 0000 c0 21 7d .!} [Aug 18 15:37:28.980] 0000 23 7d 21 7d 20 7d 2a 7d 22 7d 26 7d 20 7d 2a 7d #}!} }}"}&} }} [Aug 18 15:37:28.986] 0010 20 7d 20 6c 50 7e 7e ff 7d 23 c0 21 7d 21 7d 21 } lP~~.}#.!}!}! [Aug 18 15:37:28.992] 0020 7d 20 7d 32 7d } }2} [Aug 18 15:37:28.999] 0000 7e ff 7d 23 c0 21 7d 21 7d 22 7d 20 7d 34 7d 22 ~.}#.!}!}"} }4}" [Aug 18 15:37:29.005] 0010 7d 26 7d 20 7d 2a 7d 20 7d 20 7d 25 7d 26 7d 27 }&} }} } }%}&}' [Aug 18 15:37:29.011] 0020 af 34 4b 7d 27 7d 22 7d 28 7d 22 7d 21 bb 7e .4K}'}"}(}"}!.~ [Aug 18 15:37:29.018] mongoose_poll New heap free LWM: 147332 [Aug 18 15:37:29.120] 0000 22 7d 26 7d 20 7d 2a 7d 20 7d 20 7d 23 7d 24 c0 "}&} }} } }#}$. [Aug 18 15:37:29.126] 0010 23 7d 27 7d 22 7d 28 7d 22 55 83 7e 7e ff 7d 23 #}'}"}(}"U.~~.}# [Aug 18 15:37:29.132] 0020 c0 21 7d 21 7d .!}!} [Aug 18 15:37:29.138] 0000 7e ff 7d 23 c0 21 7d 24 7d 21 7d 20 7d 28 7d 23 ~.}#.!}$}!} }(}# [Aug 18 15:37:29.145] 0010 7d 24 c0 23 2c d4 7e }$.#,.~ [Aug 18 15:37:29.152] 0000 22 7d 20 7d 2e 7d 22 7d 26 "} }.}"}& [Aug 18 15:37:31.961] 0000 7d 20 7d 2a 7d 20 7d 20 7d 27 7d 22 7d 28 7d 22 } }} } }'}"}(}" [Aug 18 15:37:31.967] 0010 d0 d3 7e 7e ff 7d 23 c0 21 7d 22 7d 22 7d ..~~.}#.!}"}"} [Aug 18 15:37:31.973] 0000 7e ff 7d 23 c0 21 7d 22 7d 22 7d 20 7d 2e 7d 22 ~.}#.!}"}"} }.}" [Aug 18 15:37:31.980] 0010 7d 26 7d 20 7d 2a 7d 20 7d 20 7d 27 7d 22 7d 28 }&} }} } }'}"}( [Aug 18 15:37:31.986] 0020 7d 22 ee 50 7e }".P~ [Aug 18 15:37:31.993] 0000 20 7d 34 7d 22 7d 26 }4}"}& [Aug 18 15:37:32.057] 0000 7d 20 7d 2a 7d 20 7d 20 7d 25 } }} } }% [Aug 18 15:37:35.049] 0000 7d 26 7d 27 af 34 4b 7d 27 7d }&}'.4K}'} [Aug 18 15:37:35.055] 0000 7e ff 7d 23 c0 21 7d 21 7d 22 7d 20 7d 34 7d 22 ~.}#.!}!}"} }4}" [Aug 18 15:37:35.061] 0010 7d 26 7d 20 7d 2a 7d 20 7d 20 7d 25 7d 26 7d 27 }&} }} } }%}&}' [Aug 18 15:37:35.067] 0020 af 34 4b 7d 27 7d 22 7d 28 7d 22 7d 21 bb 7e .4K}'}"}(}"}!.~ [Aug 18 15:37:38.039] 0000 22 7d 28 7d 22 ea d2 7e 7e ff "}(}"..~~. [Aug 18 15:37:38.046] 0000 7e ff 03 c0 21 09 00 00 08 07 af 34 4b 9f 51 7e ~...!......4K.Q~ [Aug 18 15:37:38.053] 0000 7e ff 03 80 21 01 01 00 1c 02 06 00 2d 0f 01 03 ~...!.......-... [Aug 18 15:37:38.059] 0010 06 00 00 00 00 81 06 00 00 00 00 83 06 00 00 00 ................ [Aug 18 15:37:38.065] 0020 00 55 15 7e .U.~ [Aug 18 15:37:38.071] 0000 7e ff 03 80 57 01 01 00 0e 01 0a e8 ef f9 36 e4 ~...W.........6. [Aug 18 15:37:38.078] 0010 4d 72 05 01 fa 7e Mr...~ [Aug 18 15:37:38.084] mongoose_poll New heap free LWM: 147312 [Aug 18 15:37:38.191] 0000 7d 23 c0 21 7d 21 7d 22 7d 20 7d 2e 7d 22 7d 26 }#.!}!}"} }.}"}& [Aug 18 15:37:38.198] 0000 7d 20 7d 2a 7d 20 7d } }} } [Aug 18 15:37:38.205] 0000 20 7d 27 7d 22 7d 28 }'}"}( [Aug 18 15:37:38.212] 0000 7d 22 d0 d3 7e 7e }"..~~ [Aug 18 15:37:38.219] 0000 7e ff 7d 23 c0 21 7d 21 7d 23 7d 20 7d 34 7d 22 ~.}#.!}!}#} }4}" [Aug 18 15:37:38.225] 0010 7d 26 7d 20 7d 20 7d 20 7d 20 7d 25 7d 26 7d 24 }&} } } } }%}&}$ [Aug 18 15:37:38.231] 0020 59 ea 68 7d 27 7d 22 7d 28 7d 22 7d 2a 4a 7e Y.h}'}"}(}"}J~ [Aug 18 15:37:38.238] 0000 7e ff 7d 23 c0 21 7d 22 7d 22 7d 20 7d 2e 7d 22 ~.}#.!}"}"} }.}" [Aug 18 15:37:38.244] 0010 7d 26 7d 20 7d 2a 7d 20 7d 20 7d 27 7d 22 7d 28 }&} }} } }'}"}( [Aug 18 15:37:38.250] 0020 7d 22 ee 50 7e }".P~ [Aug 18 15:37:38.257] 0000 80 21 01 01 00 04 bb 99 7e 7e 80 21 01 01 00 04 .!......~~.!.... [Aug 18 15:37:38.264] 0010 bb 99 7e 7e 80 21 01 01 ..~~.!.. [Aug 18 15:37:38.371] 0000 00 04 bb 99 7e 7e ff 03 c0 21 0a 00 00 08 00 00 ....~~...!...... [Aug 18 15:37:38.378] 0000 00 00 6b e4 7e 7e 80 21 ..k.~~.! [Aug 18 15:37:38.386] 0000 04 01 00 0a 02 06 00 ....... [Aug 18 15:37:38.393] 0000 2d 0f 01 f8 30 7e 7e -...0~~ [Aug 18 15:37:38.400] 0000 ff 03 c0 21 08 00 00 ...!... [Aug 18 15:37:38.407] 0000 14 80 57 01 01 00 ..W... [Aug 18 15:37:38.416] 0000 0e . [Aug 18 15:37:41.392] 0000 01 0a e8 ef f9 36 e4 4d 72 05 c0 b4 7e 7e ff 03 .....6.Mr...~~.. [Aug 18 15:37:41.398] 0010 c0 21 01 03 00 0e 02 06 00 0a 00 00 07 02 08 02 .!.............. [Aug 18 15:37:41.404] 0020 7d 5d d6 7e 7e ff }].~~. [Aug 18 15:37:41.411] 0000 7e ff 7d 23 c0 21 7d 22 7d 23 7d 20 7d 2e 7d 22 ~.}#.!}"}#} }.}" [Aug 18 15:37:41.417] 0010 7d 26 7d 20 7d 2a 7d 20 7d 20 7d 27 7d 22 7d 28 }&} }} } }'}"}( [Aug 18 15:37:41.423] 0020 7d 22 43 55 7e }"CU~ [Aug 18 15:37:44.243] 0000 7e ff 7d 23 c0 21 7d 21 7d 23 7d 20 7d 34 7d 22 ~.}#.!}!}#} }4}" [Aug 18 15:37:44.249] 0010 7d 26 7d 20 7d 20 7d 20 7d 20 7d 25 7d 26 7d 24 }&} } } } }%}&}$ [Aug 18 15:37:44.255] 0020 59 ea 68 7d 27 7d 22 7d 28 7d 22 7d 2a 4a 7e Y.h}'}"}(}"}J~ [Aug 18 15:37:50.254] 0000 7e ff 7d 23 c0 21 7d 21 7d 23 7d 20 7d 34 7d 22 ~.}#.!}!}#} }4}" [Aug 18 15:37:50.260] 0010 7d 26 7d 20 7d 20 7d 20 7d 20 7d 25 7d 26 7d 24 }&} } } } }%}&}$ [Aug 18 15:37:50.266] 0020 59 ea 68 7d 27 7d 22 7d 28 7d 22 7d 2a 4a 7e Y.h}'}"}(}"}J~ [Aug 18 15:37:56.265] 0000 7e ff 7d 23 c0 21 7d 21 7d 23 7d 20 7d 34 7d 22 ~.}#.!}!}#} }4}" [Aug 18 15:37:56.271] 0010 7d 26 7d 20 7d 20 7d 20 7d 20 7d 25 7d 26 7d 24 }&} } } } }%}&}$ [Aug 18 15:37:56.277] 0020 59 ea 68 7d 27 7d 22 7d 28 7d 22 7d 2a 4a 7e Y.h}'}"}(}"}J~ [Aug 18 15:38:02.275] 0000 7e ff 7d 23 c0 21 7d 21 7d 23 7d 20 7d 34 7d 22 ~.}#.!}!}#} }4}" [Aug 18 15:38:02.281] 0010 7d 26 7d 20 7d 20 7d 20 7d 20 7d 25 7d 26 7d 24 }&} } } } }%}&}$ [Aug 18 15:38:02.287] 0020 59 ea 68 7d 27 7d 22 7d 28 7d 22 7d 2a 4a 7e Y.h}'}"}(}"}J~ [Aug 18 15:38:08.271] 0000 7e ff 7d 23 c0 21 7d 21 7d 23 7d 20 7d 34 7d 22 ~.}#.!}!}#} }4}" [Aug 18 15:38:08.292] 0010 7d 26 7d 20 7d 20 7d 20 7d 20 7d 25 7d 26 7d 24 }&} } } } }%}&}$ [Aug 18 15:38:08.298] 0020 59 ea 68 7d 27 7d 22 7d 28 7d 22 7d 2a 4a 7e Y.h}'}"}(}"}J~ [Aug 18 15:38:14.297] 0000 7e ff 7d 23 c0 21 7d 21 7d 23 7d 20 7d 34 7d 22 ~.}#.!}!}#} }4}" [Aug 18 15:38:14.303] 0010 7d 26 7d 20 7d 20 7d 20 7d 20 7d 25 7d 26 7d 24 }&} } } } }%}&}$ [Aug 18 15:38:14.309] 0020 59 ea 68 7d 27 7d 22 7d 28 7d 22 7d 2a 4a 7e Y.h}'}"}(}"}J~ [Aug 18 15:38:20.307] 0000 7e ff 7d 23 c0 21 7d 21 7d 23 7d 20 7d 34 7d 22 ~.}#.!}!}#} }4}" [Aug 18 15:38:20.313] 0010 7d 26 7d 20 7d 20 7d 20 7d 20 7d 25 7d 26 7d 24 }&} } } } }%}&}$ [Aug 18 15:38:20.319] 0020 59 ea 68 7d 27 7d 22 7d 28 7d 22 7d 2a 4a 7e Y.h}'}"}(}"}J~ [Aug 18 15:38:26.319] 0000 7e ff 7d 23 c0 21 7d 21 7d 23 7d 20 7d 34 7d 22 ~.}#.!}!}#} }4}" [Aug 18 15:38:26.325] 0010 7d 26 7d 20 7d 20 7d 20 7d 20 7d 25 7d 26 7d 24 }&} } } } }%}&}$ [Aug 18 15:38:26.331] 0020 59 ea 68 7d 27 7d 22 7d 28 7d 22 7d 2a 4a 7e Y.h}'}"}(}"}J~ [Aug 18 15:38:32.329] 0000 7e ff 7d 23 c0 21 7d 21 7d 23 7d 20 7d 34 7d 22 ~.}#.!}!}#} }4}" [Aug 18 15:38:32.335] 0010 7d 26 7d 20 7d 20 7d 20 7d 20 7d 25 7d 26 7d 24 }&} } } } }%}&}$ [Aug 18 15:38:32.341] 0020 59 ea 68 7d 27 7d 22 7d 28 7d 22 7d 2a 4a 7e Y.h}'}"}(}"}J~ [Aug 18 15:38:38.341] mgos_pppos_status_cb Error 6 (phase 0), reconnect [Aug 18 15:38:38.341] mgos_pppos_uart_disp Connecting (UART2, APN 'internet')... [Aug 18 15:38:38.352] mgos_net_on_change_c PPP: disconnected [Aug 18 15:38:40.551] 0000 7d 23 c0 }#. [Aug 18 15:38:40.551] 0000 21 7d 23 7d 23 7d !}#}#} [Aug 18 15:38:40.558] 0000 20 7d 2a 7d 22 }}" [Aug 18 15:38:40.770] mgos_net_on_change_c PPP: connecting [Aug 18 15:38:40.801] 0000 7d 26 7d 20 7d 2a }&} } [Aug 18 15:38:43.832] mgos_pppos_uart_disp Command timed out: ATH [Aug 18 15:38:43.832] mgos_pppos_uart_disp Connecting (UART2, APN 'internet')... [Aug 18 15:38:43.842] mgos_net_on_change_c PPP: disconnected [Aug 18 15:38:46.340] mgos_net_on_change_c PPP: connecting [Aug 18 15:38:46.371] 0000 7d 20 7d 20 96 cb } } ..

I have to reiterate that this works over wifi, but the moment i change to PPP, it stops connecting.

The PPPoS config looks like this "pppos": { "enable": true, "uart_no": 2, "baud_rate": 9600, "fc_enable": false, "apn": "internet", "user": "", "pass": "", "connect_cmd": "ATDT*99***1#", "echo_interval": 10, "echo_fails": 3, "hexdump_enable": true }

What would be the issue here?

[nicoloboatto]

Did you manage to get this working, by any chance?

[rojer]

a lot of work happened lately to get connection stable, closing.