### Configuring Example Projects in KEIL IDE

Source: https://www.gd32mcu.com/cn/detail/74?page=2

When using example projects, ensure the correct example configuration is defined in the 'example.h' file. This is crucial for compiling and running specific functionalities like UART.

```c
#define EVB_EXAMPLE_UART

```

--------------------------------

### GD32 Matter SDK for Lighting App

Source: https://www.gd32mcu.com/cn/detail/562

This snippet demonstrates the setup and usage of the GD32 Matter SDK for a lighting application. It outlines the prerequisites, the process of downloading and running the lighting-app example code, and how to commission the device using the Tuya Smart App.

```text
1. 在GD32VW553H-EVAL开发板上成功下载并运行**lighting-app示例代码** 且正确连接AP后，开发板的LCD屏幕上将显示配网二维码。

**注意：** 在手机上安装涂鸦智能App后 ，手机需和开发板接入到同一IP网络中。

2. 然后打开涂鸦智能App，点击App右上角的“+”，使用扫一扫功能扫描开发板屏幕上的配网二维码，开始commission配网 ，使用APP扫一扫添加新设备。

3. 当Commissioning成功，可以在涂鸦智能App中看到配网成功的提示。此时，GD32VW553H-EVAL开发板作为Matter设备接入系统。

4. 用户可以通过App对该Matter设备进行控制，例如操作LED灯的开关、调节亮度或更改颜色等
```

--------------------------------

### Using Internal Timer for Counting

Source: https://www.gd32mcu.com/download/down/document_id/225/path_type/2

Example code for creating an N300FD project and using the internal timer for counting. This snippet is related to a reported issue with timer accuracy.

```c
分享于 135 天前
分类：NucleiStudio讨论专区 __1373 __2
使用核内timer计数出错
创建N300FD工程，用qemu仿真跑如下代码：
```

--------------------------------

### MPU9150 Initialization and DMP Setup

Source: https://www.gd32mcu.com/cn/detail/173

Initializes the MPU9150 sensor, configures measurement ranges, sets sampling rate, loads the DMP, and starts attitude fusion. Ensure correct gyroscope and accelerometer ranges are set based on expected motion.

```c
mpu_init();
mpu_set_sensors(INV_XYZ_GYRO | INV_XYZ_ACCEL);
mpu_set_gyro_range(INV_ROT_500DPS);
mpu_set_accel_range(INV_ONE_G);
mpu_configure_fifo(INV_XYZ_GYRO | INV_XYZ_ACCEL);
mpu_set_sample_rate(100);
mpu_configure_tap_source(0x00);
mpu_configure_tap_engine(0x00, 0x00);
mpu_configure_tap_filter(0, 0);
mpu_configure_motion_event(0x00);
mpu_configure_sign_motion_detection(0, 0);
mpu_configure_hierarchical_motion_detection(0x00);
mpu_configure_free_fall_detection(0, 0);
mpu_configure_eoc_time(0);
mpu_set_fifo_rate(0);
mpu_set_int_level(0);
mpu_set_dmp_low_pass_filter(0);
mpu_set_dmp_state(1);
dmp_set_fifo_rate(100);
dmp_enable_feature(DMP_FEATURE_6X_LP_QUAT | DMP_FEATURE_SEND_RAW_ACCEL | DMP_FEATURE_SEND_CAL_GYRO | DMP_FEATURE_GYRO_CAL);
dmp_set_orientation(inv_orientation_matrix_use); 
dmp_enable_euler_output(0, 0);
dmp_enable_motion_nt(0);
dmp_set_fifo_priority(0);
dmp_set_gyro_bias_reg(gyro_bias);
dmp_set_accel_bias(accel_bias);
mpu_configure_dmp(0);
mpu_set_dmp_state(1);
mpu_reset_fifo();
dmp_reset_fifo();
dmp_enable_feature(DMP_FEATURE_6X_LP_QUAT | DMP_FEATURE_SEND_RAW_ACCEL | DMP_FEATURE_SEND_CAL_GYRO | DMP_FEATURE_GYRO_CAL);
dmp_set_orientation(inv_orientation_matrix_use);
dmp_enable_euler_output(0, 0);
dmp_enable_motion_nt(0);
dmp_set_fifo_priority(0);
dmp_set_gyro_bias_reg(gyro_bias);
dmp_set_accel_bias(accel_bias);
mpu_configure_dmp(0);
mpu_set_dmp_state(1);
mpu_reset_fifo();
dmp_reset_fifo();
```

--------------------------------

### Download GD32F307E-START Board Files

Source: https://www.gd32mcu.com/cn/detail/371

Link to download specific development board files for the GD32F307E-START board. Essential for users utilizing this particular development platform.

```text
http://www.gd32mcu.com/cn/download/8?kw=GD32F3END
```

--------------------------------

### Download GD32F30x Demo Suites

Source: https://www.gd32mcu.com/cn/detail/371

Link to download demo suites for the GD32F30x series. These suites offer example projects and code to facilitate development.

```text
http://www.gd32mcu.com/cn/download/8?kw=GD32F3
```