User Manual
GD32450I-EVAL
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5.19
RCU_Clock_Output
5.19.1
DEMO Purpose
This demo includes the following functions of GD32 MCU:
Learn to use GPIO control the LED
Learn to use the clock output function of RCU
Learn to communicate with PC by USART
5.19.2
DEMO Running Result
Jump the JP5 to USART with the jumper cap, and download the program
<19_RCU_Clock_Out> to the EVAL board and run. Connect serial cable to
EVAL_COM1, open the HyperTerminal. When the program is running, HyperTerminal
will display the initial information. Then user can choose the type of the output clock by
pressing the TAMPER button. After pressing, the corresponding LED will be turned on
and HyperTerminal will display which mode be selected. The frequency of the output
clock can be observed through the oscilloscope by PA8 and PC9 pin.
Information via a serial port output as following:
5.20
CTC_Calibration
5.20.1
DEMO Purpose
This demo includes the following functions of GD32 MCU:
Learn to use external low speed crystal oscillator (LXTAL) to implement
the CTC
calibration function