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Merge branch 'bugfix/modem_example_links' into 'master'

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Example/PPPoS: Correct docs, fix links, warn about support

See merge request espressif/esp-idf!15114
This commit is contained in:
morris 2021-09-09 03:33:40 +00:00
commit 21da7156e6
2 changed files with 48 additions and 2 deletions
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48
examples/cxx/experimental/esp_modem_cxx/README.md
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@ -13,6 +13,50 @@ It uses modem CMUX mode so that commands and network could be used at the same t
## About the esp_modem
Please check the component [README](managed_components/espressif__esp_modem/README.md)
The esp_modem component is deployed automatically when building this example. It will be located inside this example directory, in relative path `managed_components/espressif__esp_modem`.
You can find a brief introduction in the root directory of the component, in the main `README.md` for or a full html documentation in the relative path `docs/html/index.html`.
Or refer to the component's [documentation](managed_components/espressif__esp_modem/docs/html/index.html)
## How to use example
### Hardware Required
To run this example, you need an ESP32 dev board connected to a GSM/4G cellular module, which supports AT commands and PPP connectivity.
The example uses UART to communicate with the modem and it uses the below pin assignment:
| ESP32 | Cellular Modem |
| ------ | -------------- |
| GPIO25 | RX |
| GPIO26 | TX |
| GND | GND |
### Configure the project
* Choose the modem module in `Choose supported modem device(DCE)` option.
* Set the access point name in `Set Access Point Name(APN)` option, which should depend on the operator of your SIM card.
* Enable `EXAMPLE_NEED_SIM_PIN`: To unlock the SIM card with a PIN code if needed
## Example Output
The example will unlock the SIM card (if enabled) and enter the CMUX mode.
Then it would initiate the connection to a public MQTT broker and at the same time reading some data using AT commands.
```
I (571) uart: queue free spaces: 30
I (1731) cmux_example: Modem has correctly entered multiplexed command/data mode
I (2241) cmux_example: Operator name: "OperatorName"
I (7781) esp-netif_lwip-ppp: Connected
I (7781) esp-netif_lwip-ppp: Name Server1: xxx.xxx.xxx.xxx
I (7781) esp-netif_lwip-ppp: Name Server2: xxx.xxx.xxx.xxx
I (7781) cmux_example: Got IP address
I (7791) cmux_example: IP : xxx.xxx.xxx.xxx
I (7791) cmux_example: Netmask : xxx.xxx.xxx.xxx
I (7801) cmux_example: Gateway : xxx.xxx.xxx.xxx
I (7801) system_api: Base MAC address is not set
I (7811) system_api: read default base MAC address from EFUSE
I (9061) cmux_example: TOPIC: /topic/esp-modem
I (9061) cmux_example: DATA: Hello modem
I (9061) cmux_example: Data received
I (9211) cmux_example: Modem IMSI number: xxxxxxxxxxxxxxxx
I (21221) esp-netif_lwip-ppp: User interrupt
I (21221) esp_modem_netif: PPP state changed event 5
```

2
examples/protocols/pppos_client/README.md
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@ -2,6 +2,8 @@
(See the README.md file in the upper level 'examples' directory for more information about examples.)
**Note:** This example uses an internal implementation of the [modem component](components/modem) that will not be maintained in `v5.0` and this example will be migrated to [esp-modem component](https://components.espressif.com/component/espressif/esp_modem).
## Overview
A general PPP application consists of two parts: PPP server which is provided by cellular modem module and PPP client which is provided by ESP32 in this example.