[GD32L233C-START Review] Getting to know the development board

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[GD32L233C-START Review] Getting to know the development board [Copy link]

GD32L233 is a low-power product, so its main application direction is portable application products. Its appearance is shown in Figure 1.

Figure 1 GD32L233 development board

The development board does not have many peripheral devices, and is equipped with 4 green LEDs, a reset button and a user button. Its circuit is shown in Figure 2.

Figure 2 Schematic diagram

In addition, in order to facilitate function expansion, the development board is also equipped with an Arduino interface, and its pin assignment is shown in Figure 3.

Figure 3 Arduino interface

In addition, three USB ports are configured on the development board, of which CN100 is a GD-Link for program debugging and downloading, CN2 is a USB interface implemented by GD32L233, and CN1 is a USB to TTL communication serial port composed of CH340, as shown in Figure 4.

Figure 4 USB to TTL interface

I thought that I could see the virtual serial port by connecting the development board and the computer with CN1, but I didn't see any effect. Later, I found out from the schematic diagram that the CN1 interface cannot provide power, so it must rely on the CN100 interface to provide power for the device manager to see the virtual serial port, as shown in Figure 5.

Figure 5 Virtual serial port

So what kind of DEMO effect will the development board see when it is powered directly by CN100?

After power-on, in addition to the power indicator LED PWR being lit, you can see LED1 ~ LED4 presenting a demonstration effect of running lights, as shown in Figures 6 and 7.

Figure 6 Power-on effect

Figure 7 Flowing water light effect

The next step is to use MDK to build a development environment to meet the needs of evaluation and development.