57 lines
1.6 KiB
Markdown
57 lines
1.6 KiB
Markdown
# 2D convolution 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 how to use 2D convolution dspi_conv_f32 from esp-dsp library. Example does the following steps:
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1. Initialize the input arrays
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2. Calculate 2D convolution of two images
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The example reproduce the Matlab code:
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```
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A = ones(8);
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B = ones(4);
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Csame = conv2(A,B, "same")
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```
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## How to use example
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### Hardware required
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This example does not require any special hardware, and can be run on any common development board.
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### Configure the project
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Under Component Config ---> DSP Library ---> DSP Optimization, it's possible to choose either the optimized or ANSI implementation, to compare them.
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### Build and flash
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Build the project and flash it to the board, then run monitor tool to view serial output (replace PORT with serial port name):
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```
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idf.py -p PORT flash monitor
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```
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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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Here is an typical example console output.
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```
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I (305) main: Start Example.
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I (305) main: 2D Convolution reuslt.
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[ 0 .. 8, 0]: 9, 12, 12, 12, 12, 12, 9, 6,
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[ 0 .. 8, 1]: 12, 16, 16, 16, 16, 16, 12, 8,
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[ 0 .. 8, 2]: 12, 16, 16, 16, 16, 16, 12, 8,
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[ 0 .. 8, 3]: 12, 16, 16, 16, 16, 16, 12, 8,
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[ 0 .. 8, 4]: 12, 16, 16, 16, 16, 16, 12, 8,
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[ 0 .. 8, 5]: 12, 16, 16, 16, 16, 16, 12, 8,
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[ 0 .. 8, 6]: 9, 12, 12, 12, 12, 12, 9, 6,
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[ 0 .. 8, 7]: 6, 8, 8, 8, 8, 8, 6, 4,
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```
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