RGBLED Example

Source path: example/rt_device/rgbled

Supported Platforms

• sf32lb52-lcd_n16r8

• sf32lb58-lcd_n16r64n4

Overview

This example demonstrates rgbled driver based on rt-device (using rt-thread), including:

• rgb_ cycling RGB light display;

Tip

This example is based on HCPU and uses PWM DMA driver.

Example Usage

Hardware Requirements

Before running this example, you need to prepare a development board supported by this example

menuconfig Configuration

Run the following command

menuconfig --board=sf32lb52-lcd_n16r8

Enable RGBLED peripheral

Corresponding peripheral pwm, Channel configuration

Note: pwm setting already sets TIM configuration, check if Enable timer configuration causes conflicts

Similar conflict error:

Error from different pwm channel and rgb configuration:

Compilation and Programming

Switch to the example project directory and run the scons command to execute compilation:

scons -j8 --board=sf32lb52-lcd_n16r8 

Run build_sf32lb52-lcd_n16r8_hcpu\uart_download.bat, select the port as prompted to download:

$ ./uart_download.bat

     Uart Download

please input the serial port num:5

For detailed steps on compilation and downloading, please refer to the relevant introduction in Getting Started Guide.

Expected Results

After the example starts, the serial port cyclically outputs color characters, and the hardware rgbled also displays corresponding colors:

12-25 11:51:46:770    start display color!
12-25 11:51:47:266    -> black
12-25 11:51:49:261    -> blue
12-25 11:51:50:257    -> green
12-25 11:51:51:264    -> cyan
12-25 11:51:51:283    -> red
12-25 11:51:52:262    -> purple
12-25 11:51:54:278    -> yellow
12-25 11:51:55:275    -> white

Exception Diagnosis

1. Confirm PWM/DMA configuration status through PWM/DMA registers:

2. Enable rgb configuration error

GTIM2 register status: DMAC1 register status:

Reference Documentation

Update Log

Version	Date	Release Notes
0.0.1	12/2024	Initial version