Simple FFT Example
Source Path: example/hal/fft/simple
Supported Development Boards
This example can run on the following development boards:
sf32lb56-lcd_a128r12n1
Example Overview
This example demonstrates the following basic FFT operations:
Real FFT - Converts real number sequences to frequency domain
Complex FFT - Converts complex number sequences to frequency domain
Inverse FFT - Converts frequency domain data back to time domain
Usage
The following sections provide only absolutely necessary information. For complete steps on configuring SiFli-SDK and building/running projects, please refer to the SiFli-SDK Quick Start Guide
Hardware Requirements
This example requires no special hardware configuration. Simply connect the development board to your computer via USB.
Example Output
Under normal circumstances, you will see the following output:
=========================================
FFT HAL Module Example
=========================================
This example demonstrates:
- Real FFT operation
- Complex FFT operation
- Inverse FFT operation
=========================================
FFT Example: Using FFT1 (HCPU)
FFT initialization successful
=== Real FFT Test ===
Real FFT completed successfully
[0] = 0x0B73
[1] = 0x0000
[2] = 0x0349
[3] = 0x0641
[4] = 0xFE9D
[5] = 0xFBF7
[6] = 0xF7E2
[7] = 0x067A
[8] = 0xF961
...
=== Complex FFT Test ===
Complex FFT completed successfully
[0] = 0x0599
[1] = 0x077B
[2] = 0x0BA7
[3] = 0xFF15
[4] = 0x04C7
[5] = 0xF4D7
[6] = 0xFC33
[7] = 0xF75A
[8] = 0x000A
...
=== Inverse FFT Test ===
Inverse FFT completed successfully
[0] = 0x0599
[1] = 0x077B
[2] = 0x0BA7
[3] = 0xFF15
[4] = 0x04C7
[5] = 0xF4D7
[6] = 0xFC33
[7] = 0xF75A
[8] = 0x000A
...
=========================================
FFT Example Complete
=========================================
Troubleshooting
For any technical questions, please submit an issue on GitHub.
Reference Documentation
Update History
Version |
Date |
Release Notes |
|---|---|---|
1.0.0 |
6/2025 |
Initial version |