Pwm; Usart; Usart_Printf - Waveshare Open429I-C (HAL) User Manual

Open429I-C User Manual
2.5.

PWM

Overview
⚫
PWM demo
Hardware connection
⚫
Fit all the jumpers LED JMP
Operation and result
⚫
The brightness of LED1 keep changing
2.6.

USART

Overview
⚫
Three demos (Roll polling, Interrupt, DMA)
Hardware connection
⚫
Connect USB TO UART interface to USB port of PC by mini USB cable. This port is
connected to USART1 by default, you can also change it by setting jumper UART1
JMP.

2.6.1. USART_PRINTF

Overview
⚫
Use Roll Polling measure, reconfigure Printf function for data printing.
Operation and result
⚫
Download codes then press Reset button. Information are printed to UART as
below:
UART Printf Example: retarget the C library printf function to the UART
Version: V1.3.3, Date: 2019.04.02 10 / 47