User Manual

Open429I-C User Manual
Version: V1.3.3, Date: 2019.04.02 10 / 47
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