49 lines
1.6 KiB
Markdown
49 lines
1.6 KiB
Markdown
# Code recognition Example
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This example demonstrates how to decode 1D/2D barcode. Currectly, the formats that can be decoded by [esp_code_scanner](./../../components/esp-code-scanner) are:
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- 1D barcode:
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- code39
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- code128
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- 2D barcode:
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- QR code
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## How to Use Example
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Before project configuration and build, be sure to set the correct chip target using `idf.py set-target <chip_name>`.
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### Hardware Required
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* A development board with ESP32/ESP32-S2/ESP32-S3 SoC (e.g., ESP-EYE, ESP-WROVER-KIT, ESPS3-EYE etc.)
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* A USB cable for Power supply and programming
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* A Camera Module: OV2640/OV3660/GC0308/GC032A image sensor(recommended focal range: 5cm-20cm)
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* A LCD(optional): ST7789/...
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Note: the default OV2640 camera on the development board may not be suitable for this example.
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### Configure the Project
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Some default settings have been set based on the development board using `sdkconfig.defaults.<chip_name>`
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### Build and Flash
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Run `idf.py -p PORT flash monitor` to build, flash and monitor the project.
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(To exit the serial monitor, type ``Ctrl-]``.)
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See the [Getting Started Guide](https://docs.espressif.com/projects/esp-idf/en/latest/get-started/index.html) for full steps to configure and use ESP-IDF to build projects.
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## Example Output
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Please make sure the code can be clearly captured.
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If a qrcode can be succesfully decoded, you will be able to see information displayed as below:
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```
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I (11164) APP_CODE_SCANNER: Decode time in 70 ms.
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I (11164) APP_CODE_SCANNER: Decoded QR-Code symbol "测试"
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```
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## Troubleshooting
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For any technical queries, please open an [issue](https://github.com/espressif/esp-who/issues) on GitHub. We will get back to you soon. |