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06956d46c1
* Wrapper class for simple GPIO interaction like read/write without ISRs. * Added rule to provoke builds after changes in the experimental C++ component.
58 lines
1.4 KiB
Markdown
58 lines
1.4 KiB
Markdown
# Example: Blink C++ example
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(See the README.md file in the upper level 'examples' directory for more information about examples.)
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This example demonstrates usage of the `GPIO_Output` C++ class in ESP-IDF.
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In this example, the `sdkconfig.defaults` file sets the `CONFIG_COMPILER_CXX_EXCEPTIONS` option.
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This enables both compile time support (`-fexceptions` compiler flag) and run-time support for C++ exception handling.
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This is necessary for the C++ APIs.
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## How to use example
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### Hardware Required
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Any ESP32 family development board.
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Connect an LED to the corresponding pin (default is pin 4). If the board has a normal LED already, you can use the pin number to which that one is connected.
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Development boards with an RGB LED that only has one data line like the ESP32-C3-DevKitC-02 and ESP32-C3-DevKitM-1 will not work. In this case, please connect an external normal LED to the chosen pin.
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### Configure the project
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```
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idf.py menuconfig
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```
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### Build and Flash
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```
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idf.py -p PORT flash monitor
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```
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(Replace PORT with the name of the serial port.)
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(To exit the serial monitor, type ``Ctrl-]``.)
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See the Getting Started Guide for full steps to configure and use ESP-IDF to build projects.
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## Example Output
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```
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...
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I (339) cpu_start: Starting scheduler.
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I (343) gpio: GPIO[4]| InputEn: 0| OutputEn: 0| OpenDrain: 0| Pullup: 1| Pulldown: 0| Intr:0
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LED ON
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LED OFF
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LED ON
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LED OFF
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LED ON
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LED OFF
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LED ON
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LED OFF
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LED ON
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LED OFF
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```
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