GigaDevice GD32350G-START Module User Guide

Semiconductor Inc GD32350G-START
User Guide

GD32350G-START Module

Summary
GD32350G-START board uses GD32F350G8 as the main controller. As a complete development platform of GD32F3x0 powered by ARM® Cortex™-M4 core, the board supports the full range of peripherals. It uses a mini-USB interface or AC/DC adapter to supply 5V power. SWD, Reset, Boot, User button key, LED, and Extension Pin are also included. This document details its hardware schematic and the relevant applications.

Function Pin Assign

Table 2-1 Pin assignment

Getting started

The START Board uses a mini-USB connecter or AC/DC adapter to get power, the hardware system power is +3.3V. A mini-USB cable is necessary to down programs. Select the correct boot mode and then power on, the LED3 will turn on, which indicates the power supply is ready. There are Keil versions and IAR versions of all projects. The Keil versions of the projects are created based on Keil MDK-ARM 4.74 uVision4. IAR versions of the projects is created based on IAR Embedded Workbench for ARM 7.40.2. During use, the following points should be noted:

1. If you use Keil uVision4 to open the project, install the GD32F3x0_AddOn.2.0.0.exe to load the associated files.
2. If you use Keil uVision5 to open the project, there are two ways to solve the “Device Missing (s)” problem. One is to install GigaDevice.GD32F3x0_DFP.2.0.0.pack. In the Project menu, select the Manage sub-menu, click on the “Version Migrate 5 Format…” menu, and the Keil uVision4 project will be converted to the Keil uVision5 project. Then add “C:\Keil_v5\ARM\Pack \ARM\CMSIS\4.2.0\CMSIS\Include” to C/C++ in Option for Target. The other is to install Addon directly. Select the installation directory of Keil uVision5 software, such as C:\Keil_v5, in the Destination Folder of Folder Selection. Select the corresponding device in Device of Option for Target and add  C:\Keil_v5\ARM\Pack\ARM\CMSIS\4.2.0\CMSIS\Include” to C/C++ in Option for Target.
3. If you use IAR to open the project, install IAR_GD32F3x0_ADDON.2.0.0.exe to load the associated files.

Hardware layout overview

Power supply
Figure 4-1 Schematic diagram of power supply![GigaDevice GD32350G-START Module

• Fig](https://manuals.plus/wp-content/uploads/2022/10/GigaDevice-GD32350G- START-Module-Fig.png)

Boot option Figure 4-2 Schematic diagram of boot option
Table 4-1 Boot configuration

LED
Figure 4-3 Schematic diagram of LED function

KEY
Figure 4-4 Schematic diagram of Key function
KEY
USBFS Figure 4-5 Schematic diagram of USBFS function

GD-Link
Figure 4-6 Schematic diagram of GD-Link function

Extension
Figure 4-7 Schematic diagram of Extension Pin

MCU
Figure 4-8 Schematic diagram of MCU Pin

Routine use guide

GPIO_Running_Led
DEMO purpose
This Demo includes the following functions of GD32 MCU:

• Learn to use GPIO for controlling the LED
• Learn to use SysTick to generate a 1ms delay

GD32350G-START board has one LED. The LED1 is controlled by GPIO. This demo will show how to light the LED.
DEMO running Result
Download the program <01_GPIO_Running_Led> to the board, the state of LED1 is toggled every 1s.
GPIO_Key_Polling_mode
DEMO purpose
This Demo includes the following functions of GD32 MCU:

• Learn to use GPIO to control the LED and the KEY
• Learn to use SysTick to generate a 1ms delay

GD32350G-START board has two keys and one LED. The two keys are the Reset key and the User key. The LED1 is controlled by GPIO.
This demo will show how to use the User key to control the LED1. When pressing down the User Key, it will check the input value of the IO port. If the value is 1, wait for 50ms. Then check the input value of the IO port again. If the value is still 1, indicates that the button is pressed down successfully, and lights the LED1.
DEMO running Result
Download the program <02_GPIO_Key_Polling_mode> to the board, first of all, all the LEDs will be flashed once for the test. Then press down the User Key, and LED1 will be turned on. Press down the User Key again, and LED1 will be turned off.
EXTI_Key_Interrupt_mode
DEMO purpose
This Demo includes the following functions of GD32 MCU:

• Learn to use GPIO to control the LED and the KEY
• Learn to use EXTI to generate an external interrupt

GD32350G-START board has two keys and one LED. The two keys are the Reset key and the User
key. The LED1 is controlled by GPIO.
This demo will show how to use EXTI interrupt line to control the LED1. When pressing down the User Key, it will produce an interrupt. In the interrupt service function, the demo will toggle LED1.

DEMO running Result
Download the program <03_EXTI_Key_Interrupt_mode> to the board, first of all, all the LEDs will be flashed once for testing. Then press down the User Key, and LED1 will be turned on.
Press down the User Key again, and LED1 will be turned off.

USB_FS
USBD_CDC_ACM
DEMO purpose
This demo includes the following functions of GD32 MCU:

•  Learn how to use the USBFS peripheral
• Learn how to implement a USB CDC device

The Start board has one USBFS interface. In this demo, the Start board is enumerated as a USB virtual COM port, which would be shown in the device manager of the PC as below. This demo makes the USB device looks like a serial port, and loops back the contents of a text file over the USB port. To run the demo, input a message using the PC’s keyboard. Any data that shows in HyperTerminal is received from the device.
DEMO running Result
Download the program <04_USBFS\Device\CDC_ACM> to the Start board and run. When you input a message through a computer keyboard, the HyperTerminal will receive and show the message. For example, when you input “GigaDevice MCU”, the HyperTerminal will get the message and show it as below.

USBH_MSC_Host
DEMO purpose
This demo includes the following functions of GD32 MCU:

• Learn to use the USBFS as an MSC host
• Learn the operation between the MSC host and the U-disk Start board integrates the USBFS module, and the module can be used as a USBFS device, a USBFS host, or an OTG device. This demo mainly shows how to use the USBFS as a USB MSC host to communicate with an external U-disk.

DEMO running Result
Insert the OTG cable to the USB port, download the program <04_USBFS\Host\MSC> to the Start board, and run.
If an Udisk has been attached, firstly, press the user key, then this demo will write the file to the Udisk. After a while, the file would have been written in U-disk, the MSC host demo is the end and the LED1 will be on.

Revision history

Table 6-1 Revision history

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