User Manual
GD32450I-EVAL
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5.5.2
DEMO Running Result
Download the program < 05_USART_Echo_Interrupt_mode > to the EVAL board, jump
the JP5 to USART with the jumper cap and connect serial cable to EVAL_COM1. Firstly,
all the LEDs are turned on and off for test. Then, the EVAL_COM1 sends the tx_buffer
array (from 0x00 to 0xFF) to the serial terminal tool supporting hex format
communication and waits for receiving data of BUFFER_SIZE bytes from the serial
terminal. The data MCU have received is stored in the rx_buffer array. After that,
compare tx_buffer with rx_buffer. If tx_buffer is same with rx_buffer, LED1, LED2, LED3
flash by turns. Otherwise, LED1, LED2, LED3 toggle together.
The output information via the serial port is as following.
5.6
USART_DMA
5.6.1
DEMO Purpose
This demo includes the following functions of GD32 MCU:
Learn to use the USART transmit and receive data using DMA
5.6.2
DEMO Running Result
Download the program < 06_USART_DMA > to the EVAL board, jump the JP5 to
USART with the jumper cap and connect serial cable to EVAL_COM1. Firstly, all the
LEDs are turned on and off for test. Then, the EVAL_COM1 sends the tx_buffer array
(from 0x00 to 0xFF) to the serial terminal tool supporting hex format communication and
waits for receiving data of same bytes as tx_buffer from the serial terminal. The data
MCU have received is stored in the rx_buffer array. After that, compare tx_buffer with
rx_buffer. If tx_buffer is same with rx_buffer, LED1, LED2, LED3 flash by turns.
Otherwise, LED1, LED2, LED3 toggle together.
