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docs(esp_modem): updated documents to show missed topics
This commit is contained in:
@ -17,5 +17,5 @@ Get started with one of the examples:
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|||||||
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||||||
## Documentation
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## Documentation
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||||||
|
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||||||
* Continue with esp-modem [brief overview](docs/README.md)
|
* Continue with esp-modem [brief overview](https://github.com/espressif/esp-protocols/tree/master/docs/esp_modem/en/README.rst)
|
||||||
* View the full [html documentation](https://espressif.github.io/esp-protocols/esp_modem/index.html)
|
* View the full [html documentation](https://docs.espressif.com/projects/esp-protocols/esp_modem/docs/latest/index.html)
|
||||||
|
@ -1,92 +0,0 @@
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|||||||
# ESP MODEM
|
|
||||||
|
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||||||
This component is used to communicate with modems in the command mode (using AT commands), as well as the data mode
|
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||||||
(over PPPoS protocol).
|
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||||||
The modem device is modeled with a DCE (Data Communication Equipment) object, which is composed of:
|
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||||||
* DTE (Data Terminal Equipment), which abstracts the terminal (currently only UART implemented).
|
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||||||
* PPP Netif representing a network interface communicating with the DTE using PPP protocol.
|
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||||||
* Module abstracting the specific device model and its commands.
|
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||||||
|
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||||||
```
|
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||||||
+-----+
|
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||||||
| DTE |--+
|
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||||||
+-----+ | +-------+
|
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||||||
+-->| DCE |
|
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||||||
+-------+ | |o--- set_mode(command/data)
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| Module|--->| |
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+-------+ | |o--- send_commands
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+->| |
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+------+ | +-------+
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| PPP |--+
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| netif|------------------> network events
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||||||
+------+
|
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||||||
```
|
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||||||
|
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||||||
## Modem components
|
|
||||||
### DCE
|
|
||||||
|
|
||||||
This is the basic operational unit of the esp_modem component, abstracting a specific module in software,
|
|
||||||
which is basically configured by
|
|
||||||
* the I/O communication media (UART), defined by the DTE configuration
|
|
||||||
* the specific command library supported by the device model, defined with the module type
|
|
||||||
* network interface configuration (PPPoS config in lwip)
|
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||||||
|
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After the object is created, the application interaction with the DCE is in
|
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||||||
* issuing specific commands to the modem
|
|
||||||
* switching between data and command mode
|
|
||||||
|
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||||||
### DTE
|
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Is an abstraction of the physical interface connected to the modem. Current implementation supports only UART
|
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|
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### PPP netif
|
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||||||
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Is used to attach the specific network interface to a network communication protocol used by the modem. Currently implementation supports only PPPoS protocol.
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### Module
|
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Abstraction of the specific modem device. Currently the component supports SIM800, BG96, SIM7600.
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|
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## Use cases
|
|
||||||
|
|
||||||
Users interact with the esp-modem using the DCE's interface, to basically
|
|
||||||
* Switch between command and data mode to connect to the internet via cellular network.
|
|
||||||
* Send various commands to the device (e.g. send SMS)
|
|
||||||
|
|
||||||
The applications typically register handlers for network events to receive notification on the network availability and
|
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IP address changes.
|
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||||||
|
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Common use cases of the esp-modem are also listed as the examples:
|
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* `examples/pppos_client` -- simple client which reads some module properties and switches to the data mode to connect to a public mqtt broker.
|
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||||||
* `examples/modem_console` -- is an example to exercise all possible module commands in a console application.
|
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||||||
* `examples/ap_to_pppos` -- this example focuses on the network connectivity of the esp-modem and provides a WiFi AP that forwards packets (and uses NAT) to and from the PPPoS connection.
|
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|
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## Extensibility
|
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||||||
|
|
||||||
### CMUX
|
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||||||
|
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||||||
Implementation of virtual terminals is an experimental feature, which allows users to also issue commands in the data mode,
|
|
||||||
after creating multiple virtual terminals, designating some of them solely to data mode, others solely to command mode.
|
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|
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### DTE's
|
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||||||
|
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||||||
Currently, we support only UART (and USB as a preview feature), but modern modules support other communication interfaces, such as USB, SPI.
|
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||||||
|
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### Other devices
|
|
||||||
|
|
||||||
Adding a new device is a must-have requirement for the esp-modem component. Different modules support different commands,
|
|
||||||
or some commands might have a different implementation. Adding a new device means to provide a new implementation
|
|
||||||
as a class derived from `GenericModule`, where we could add new commands or modify the existing ones.
|
|
||||||
|
|
||||||
## Configuration
|
|
||||||
|
|
||||||
Modem abstraction is configurable both compile-time and run-time.
|
|
||||||
|
|
||||||
### Component Kconfig
|
|
||||||
|
|
||||||
Compile-time configuration is provided using menuconfig. Please check the description for the CMUX mode configuration options.
|
|
||||||
|
|
||||||
### Runtime configuration
|
|
||||||
|
|
||||||
Is defined using standard configuration structures for `DTE` and `DCE` objects separately. Please find documentation of
|
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||||||
* :cpp:class:`esp_modem_dte_config_t`
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* :cpp:class:`esp_modem_dce_config_t`
|
|
Before Width: | Height: | Size: 26 KiB After Width: | Height: | Size: 26 KiB |
Before Width: | Height: | Size: 139 KiB After Width: | Height: | Size: 139 KiB |
132
docs/esp_modem/en/README.rst
Normal file
132
docs/esp_modem/en/README.rst
Normal file
@ -0,0 +1,132 @@
|
|||||||
|
ESP MODEM
|
||||||
|
=========
|
||||||
|
|
||||||
|
This component is used to communicate with modems in the command mode
|
||||||
|
(using AT commands), as well as the data mode (over PPPoS protocol). The
|
||||||
|
modem device is modeled with a DCE (Data Communication Equipment)
|
||||||
|
object, which is composed of:
|
||||||
|
|
||||||
|
- DTE (Data Terminal Equipment), which abstracts the terminal (currently only UART implemented).
|
||||||
|
- PPP Netif representing a network interface communicating with the DTE using PPP protocol.
|
||||||
|
- Module abstracting the specific device model and its commands.
|
||||||
|
|
||||||
|
::
|
||||||
|
|
||||||
|
+-----+
|
||||||
|
| DTE |--+
|
||||||
|
+-----+ | +-------+
|
||||||
|
+-->| DCE |
|
||||||
|
+-------+ | |o--- set_mode(command/data)
|
||||||
|
| Module|--->| |
|
||||||
|
+-------+ | |o--- send_commands
|
||||||
|
+->| |
|
||||||
|
+------+ | +-------+
|
||||||
|
| PPP |--+
|
||||||
|
| netif|------------------> network events
|
||||||
|
+------+
|
||||||
|
|
||||||
|
Modem components
|
||||||
|
----------------
|
||||||
|
|
||||||
|
DCE
|
||||||
|
~~~
|
||||||
|
|
||||||
|
This is the basic operational unit of the esp_modem component,
|
||||||
|
abstracting a specific module in software, which is basically configured
|
||||||
|
by
|
||||||
|
|
||||||
|
- the I/O communication media (UART), defined by the DTE configuration
|
||||||
|
- the specific command library supported by the device model, defined with the module type
|
||||||
|
- network interface configuration (PPPoS config in lwip)
|
||||||
|
|
||||||
|
After the object is created, the application interaction with the DCE is
|
||||||
|
in
|
||||||
|
|
||||||
|
- issuing specific commands to the modem
|
||||||
|
- switching between data and command mode
|
||||||
|
|
||||||
|
DTE
|
||||||
|
~~~
|
||||||
|
|
||||||
|
Is an abstraction of the physical interface connected to the modem.
|
||||||
|
Current implementation supports only UART
|
||||||
|
|
||||||
|
PPP netif
|
||||||
|
~~~~~~~~~
|
||||||
|
|
||||||
|
Is used to attach the specific network interface to a network
|
||||||
|
communication protocol used by the modem. Currently implementation
|
||||||
|
supports only PPPoS protocol.
|
||||||
|
|
||||||
|
Module
|
||||||
|
~~~~~~
|
||||||
|
|
||||||
|
Abstraction of the specific modem device. Currently the component
|
||||||
|
supports SIM800, BG96, SIM7600.
|
||||||
|
|
||||||
|
Use cases
|
||||||
|
---------
|
||||||
|
|
||||||
|
Users interact with the esp-modem using the DCE’s interface, to
|
||||||
|
basically
|
||||||
|
|
||||||
|
- Switch between command and data mode to connect to the internet via cellular network.
|
||||||
|
- Send various commands to the device (e.g. send SMS)
|
||||||
|
|
||||||
|
The applications typically register handlers for network events to
|
||||||
|
receive notification on the network availability and IP address changes.
|
||||||
|
|
||||||
|
Common use cases of the esp-modem are also listed as the examples:
|
||||||
|
|
||||||
|
- ``examples/pppos_client`` – simple client which reads some module properties and switches to the data mode to connect to a public mqtt broker.
|
||||||
|
- ``examples/modem_console`` – is an example to exercise all possible module commands in a console application.
|
||||||
|
- ``examples/ap_to_pppos`` – this example focuses on the network
|
||||||
|
connectivity of the esp-modem and provides a WiFi AP that forwards
|
||||||
|
packets (and uses NAT) to and from the PPPoS connection.
|
||||||
|
|
||||||
|
Extensibility
|
||||||
|
-------------
|
||||||
|
|
||||||
|
CMUX
|
||||||
|
~~~~
|
||||||
|
|
||||||
|
Implementation of virtual terminals is an experimental feature, which
|
||||||
|
allows users to also issue commands in the data mode, after creating
|
||||||
|
multiple virtual terminals, designating some of them solely to data
|
||||||
|
mode, others solely to command mode.
|
||||||
|
|
||||||
|
DTE’s
|
||||||
|
~~~~~
|
||||||
|
|
||||||
|
Currently, we support only UART (and USB as a preview feature), but
|
||||||
|
modern modules support other communication interfaces, such as USB, SPI.
|
||||||
|
|
||||||
|
Other devices
|
||||||
|
~~~~~~~~~~~~~
|
||||||
|
|
||||||
|
Adding a new device is a must-have requirement for the esp-modem
|
||||||
|
component. Different modules support different commands, or some
|
||||||
|
commands might have a different implementation. Adding a new device
|
||||||
|
means to provide a new implementation as a class derived from
|
||||||
|
``GenericModule``, where we could add new commands or modify the
|
||||||
|
existing ones.
|
||||||
|
|
||||||
|
Configuration
|
||||||
|
-------------
|
||||||
|
|
||||||
|
Modem abstraction is configurable both compile-time and run-time.
|
||||||
|
|
||||||
|
Component Kconfig
|
||||||
|
~~~~~~~~~~~~~~~~~
|
||||||
|
|
||||||
|
Compile-time configuration is provided using menuconfig. Please check
|
||||||
|
the description for the CMUX mode configuration options.
|
||||||
|
|
||||||
|
Runtime configuration
|
||||||
|
~~~~~~~~~~~~~~~~~~~~~
|
||||||
|
|
||||||
|
Is defined using standard configuration structures for ``DTE`` and
|
||||||
|
``DCE`` objects separately. Please find documentation of
|
||||||
|
|
||||||
|
- :cpp:class:``esp_modem_dte_config_t``
|
||||||
|
- :cpp:class:``esp_modem_dce_config_t``
|
@ -1,36 +0,0 @@
|
|||||||
# Internal design
|
|
||||||
|
|
||||||
## Design decisions
|
|
||||||
|
|
||||||
* Use C++ with additional C API
|
|
||||||
|
|
||||||
* Use exceptions
|
|
||||||
- Use macro wrapper over `try-catch` blocks when exceptions off (use `abort()` if `THROW()`)
|
|
||||||
|
|
||||||
* Initializes and allocates in the constructor (might throw)
|
|
||||||
- easier code with exceptions ON, with exceptions OFF alloc/init failures are not treated as runtime error (program aborts)
|
|
||||||
- break down long initialization in constructor into more private methods
|
|
||||||
|
|
||||||
* Implements different devices using inheritance from `GenericModule`, which is the most general implementation of a common modem
|
|
||||||
- Internally uses templates with device specialization (modeled as `DCE<SpecificModule>`) which could be used as well for some special cases,
|
|
||||||
such as implantation of a minimal device (ModuleIf), add new AT commands (oOnly in compile time), or using the Module with DTE only (no DCE, no Netif) for sending AT commands without network
|
|
||||||
|
|
||||||
## DCE collaboration model
|
|
||||||
|
|
||||||
The diagram describes how the DCE class collaborates with DTE, PPP and the device abstraction
|
|
||||||
|
|
||||||

|
|
||||||
|
|
||||||
## Terminal inheritance
|
|
||||||
|
|
||||||
Terminal is a class which can read or write data, and can handle callbacks when data are available. UART specialization
|
|
||||||
is provided implementing these method using the uart driver.
|
|
||||||
|
|
||||||
## CMUX terminal
|
|
||||||
|
|
||||||
The below diagram depicts the idea of using CMUX terminal mode using the CMuxInstance class which is a terminal
|
|
||||||
(it implements the basic read/write methods) interfacing arbitrary number of virtual terminals,
|
|
||||||
but at the same time it is also composed of CMux class, which consumes the original terminal and uses its read/write methods
|
|
||||||
to multiplex the terminal.
|
|
||||||
|
|
||||||

|
|
63
docs/esp_modem/en/internal_design.rst
Normal file
63
docs/esp_modem/en/internal_design.rst
Normal file
@ -0,0 +1,63 @@
|
|||||||
|
Internal design
|
||||||
|
===============
|
||||||
|
|
||||||
|
Design decisions
|
||||||
|
----------------
|
||||||
|
|
||||||
|
- Use C++ with additional C API
|
||||||
|
|
||||||
|
- Use exceptions
|
||||||
|
|
||||||
|
- Use macro wrapper over ``try-catch`` blocks when exceptions off
|
||||||
|
(use ``abort()`` if ``THROW()``)
|
||||||
|
|
||||||
|
- Initializes and allocates in the constructor (might throw)
|
||||||
|
|
||||||
|
- easier code with exceptions ON, with exceptions OFF alloc/init
|
||||||
|
failures are not treated as runtime error (program aborts)
|
||||||
|
- break down long initialization in constructor into more private
|
||||||
|
methods
|
||||||
|
|
||||||
|
- Implements different devices using inheritance from
|
||||||
|
``GenericModule``, which is the most general implementation of a
|
||||||
|
common modem
|
||||||
|
|
||||||
|
- Internally uses templates with device specialization (modeled as
|
||||||
|
``DCE<SpecificModule>``) which could be used as well for some
|
||||||
|
special cases, such as implantation of a minimal device
|
||||||
|
(ModuleIf), add new AT commands (oOnly in compile time), or using
|
||||||
|
the Module with DTE only (no DCE, no Netif) for sending AT
|
||||||
|
commands without network
|
||||||
|
|
||||||
|
DCE collaboration model
|
||||||
|
-----------------------
|
||||||
|
|
||||||
|
The diagram describes how the DCE class collaborates with DTE, PPP and
|
||||||
|
the device abstraction
|
||||||
|
|
||||||
|
.. figure:: DCE_DTE_collaboration.png
|
||||||
|
:alt: DCE_architecture
|
||||||
|
|
||||||
|
DCE_architecture
|
||||||
|
|
||||||
|
Terminal inheritance
|
||||||
|
--------------------
|
||||||
|
|
||||||
|
Terminal is a class which can read or write data, and can handle
|
||||||
|
callbacks when data are available. UART specialization is provided
|
||||||
|
implementing these method using the uart driver.
|
||||||
|
|
||||||
|
CMUX terminal
|
||||||
|
-------------
|
||||||
|
|
||||||
|
The below diagram depicts the idea of using CMUX terminal mode using the
|
||||||
|
CMuxInstance class which is a terminal (it implements the basic
|
||||||
|
read/write methods) interfacing arbitrary number of virtual terminals,
|
||||||
|
but at the same time it is also composed of CMux class, which consumes
|
||||||
|
the original terminal and uses its read/write methods to multiplex the
|
||||||
|
terminal.
|
||||||
|
|
||||||
|
.. figure:: CMux_collaboration.png
|
||||||
|
:alt: CMUX Terminal
|
||||||
|
|
||||||
|
CMUX Terminal
|
@ -1,21 +1,72 @@
|
|||||||
|
# Cleanup the generated html
|
||||||
|
rm -rf html
|
||||||
|
|
||||||
|
# Generate C++ API header of the DCE
|
||||||
|
cat esp_modem_command_declare.inc | clang++ -E -P -CC -xc++ -I../../components/esp_modem/include -DGENERATE_DOCS - | sed -n '1,/DCE command documentation/!p' > en/esp_modem_dce.hpp
|
||||||
|
|
||||||
|
# Generate C API header of the modem_api.h
|
||||||
|
cat esp_modem_command_declare.inc | clang -E -P -CC -xc -I../../components/esp_modem/include -DGENERATE_DOCS - | sed -n '1,/DCE command documentation/!p' > en/esp_modem_api_commands.h
|
||||||
|
|
||||||
|
|
||||||
|
# RST with links to C++ API
|
||||||
|
cat esp_modem_command_declare.inc | clang -E -P -xc -I../../components/esp_modem/include -DGENERATE_DOCS -DGENERATE_RST_LINKS - | sed 's/NL/\n/g' > en/cxx_api_links.rst
|
||||||
|
|
||||||
build-docs --target esp32 --language en
|
build-docs --target esp32 --language en
|
||||||
|
|
||||||
cp -rf _build/en/esp32/html .
|
cp -rf _build/en/esp32/html .
|
||||||
rm -rf _build __pycache__
|
rm -rf _build __pycache__
|
||||||
|
|
||||||
|
## Modifes some version and target fields of index.html
|
||||||
|
#echo "<script type="text/javascript">
|
||||||
|
#window.onload =(function() {
|
||||||
|
# var myAnchor = document.getElementById('version-select');
|
||||||
|
# var mySpan = document.createElement('input');
|
||||||
|
# mySpan.setAttribute('type', 'text');
|
||||||
|
# mySpan.setAttribute('maxLength', '10');
|
||||||
|
# mySpan.value = 'latest';
|
||||||
|
# mySpan.setAttribute('disabled', true);
|
||||||
|
# myAnchor.parentNode.replaceChild(mySpan, myAnchor);
|
||||||
|
#
|
||||||
|
# var myAnchor = document.getElementById('target-select');
|
||||||
|
# var mySpan = document.createElement('input');
|
||||||
|
# mySpan.setAttribute('type', 'text');
|
||||||
|
# mySpan.setAttribute('maxLength', '10');
|
||||||
|
# mySpan.value = 'all targets';
|
||||||
|
# mySpan.setAttribute('disabled', true);
|
||||||
|
# myAnchor.parentNode.replaceChild(mySpan, myAnchor);
|
||||||
|
#
|
||||||
|
#})();
|
||||||
|
#</script>" >> html/index.html
|
||||||
|
|
||||||
# Modifes some version and target fields of index.html
|
# Modifes some version and target fields of index.html
|
||||||
echo "<script type="text/javascript">
|
echo "<script type='text/javascript'>
|
||||||
window.onload =(function() {
|
window.onload =(function() {
|
||||||
var myAnchor = document.getElementById('version-select');
|
var myAnchor = document.getElementById('version-select');
|
||||||
var mySpan = document.createElement('input');
|
var mySpan = document.createElement('select');
|
||||||
mySpan.setAttribute('type', 'text');
|
mySpan.style.float = 'left';
|
||||||
mySpan.setAttribute('maxLength', '10');
|
|
||||||
mySpan.value = 'latest';
|
latest_ver = document.createElement('option');
|
||||||
mySpan.setAttribute('disabled', true);
|
latest_ver.value = 'latest';
|
||||||
|
latest_ver.textContent = 'latest(master)';
|
||||||
|
mySpan.append(latest_ver);
|
||||||
|
|
||||||
|
var myArray = ['v1.0.0''];
|
||||||
|
for (var i = myArray.length - 1; i >= 0; i--) {
|
||||||
|
current_ver = document.createElement('option');
|
||||||
|
current_ver.value = myArray[i];
|
||||||
|
current_ver.textContent = 'release-'+myArray[i];
|
||||||
|
mySpan.append(current_ver);
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
myAnchor.parentNode.replaceChild(mySpan, myAnchor);
|
myAnchor.parentNode.replaceChild(mySpan, myAnchor);
|
||||||
|
mySpan.addEventListener('change', function() {
|
||||||
|
window.location.href='https://docs.espressif.com/projects/esp-protocols/esp_modem/docs/'+event.target.value+'/index.html'
|
||||||
|
});
|
||||||
|
|
||||||
var myAnchor = document.getElementById('target-select');
|
var myAnchor = document.getElementById('target-select');
|
||||||
var mySpan = document.createElement('input');
|
var mySpan = document.createElement('input');
|
||||||
|
mySpan.style.float = 'left';
|
||||||
mySpan.setAttribute('type', 'text');
|
mySpan.setAttribute('type', 'text');
|
||||||
mySpan.setAttribute('maxLength', '10');
|
mySpan.setAttribute('maxLength', '10');
|
||||||
mySpan.value = 'all targets';
|
mySpan.value = 'all targets';
|
||||||
@ -23,4 +74,4 @@ window.onload =(function() {
|
|||||||
myAnchor.parentNode.replaceChild(mySpan, myAnchor);
|
myAnchor.parentNode.replaceChild(mySpan, myAnchor);
|
||||||
|
|
||||||
})();
|
})();
|
||||||
</script>" >> html/index.html
|
</script>" >> html/index.html
|
||||||
|
Reference in New Issue
Block a user