GD32F407V-START

Overview

The GD32F407V-START board is a hardware platform that enables prototyping on GD32F407VE Cortex-M4 High Performance MCU.

The GD32F407VE features a single-core ARM Cortex-M4 MCU which can run up to 168 MHz with flash accesses zero wait states, 3072kiB of Flash, 192kiB of SRAM and 82 GPIOs.

Hardware

GD32F407VET6 MCU
1 x User LEDs
1 x User Push buttons
1 x USART
GD-Link on board programmer
J-Link/SWD connector

For more information about the GD32F407 SoC and GD32F407V-START board:

Supported Features

The board configuration supports the following hardware features:

Peripheral	Kconfig option	Devicetree compatible
EXTI	`CONFIG_GD32_EXTI`	`gd,gd32-exti`
GPIO	`CONFIG_GPIO`	`gd,gd32-gpio`
NVIC	N/A	`arm,v7m-nvic`
PWM	`CONFIG_PWM`	`gd,gd32-pwm`
SYSTICK	N/A	N/A
USART	`CONFIG_SERIAL`	`gd,gd32-usart`

Other peripherals may be used if shields are connected to the board.

Serial Port

The GD32F407V-START board has one serial communication port. The default port is USART0 with TX connected at PB6 and RX at PB7.

Programming and Debugging

Before programming your board make sure to configure boot jumpers as follows:

JP3/4: Select 2-3 for both (boot from user memory)

Using GD-Link or J-Link

The board comes with an embedded GD-Link programmer. You need to install CMSIS-Pack which is required by pyOCD when programming or debugging by the GD-Link programmer. Execute the following command to install CMSIS-Pack for GD32F407VK if not installed yet.

pyocd pack install gd32f407vk

Also, J-Link can be used to program the board via the SWD interface (PA13/SWDIO and PA14/SWCLK in the JP6 header).

Build the Zephyr kernel and the Hello World sample application:
```
west build -b gd32f407v_start samples/hello_world
```
Connect Serial-USB adapter to PB6, PB7, and GND.
Run your favorite terminal program to listen for output. On Linux the terminal should be something like /dev/ttyUSB0. For example:
```
minicom -D /dev/ttyUSB0 -o
```
The -o option tells minicom not to send the modem initialization string. Connection should be configured as follows:
- Speed: 115200
- Data: 8 bits
- Parity: None
- Stop bits: 1
To flash an image:
```
west build -b gd32f407v_start samples/hello_world
west flash
```
When using J-Link, append --runner jlink option after west flash.

You should see “Hello World! gd32f407v_start” in your terminal.
To debug an image:
```
west build -b gd32f407v_start samples/hello_world
west debug
```
When using J-Link, append --runner jlink option after west debug.