95 lines
2.1 KiB
C
95 lines
2.1 KiB
C
/********************************** (C) COPYRIGHT *******************************
|
|
* File Name : main.c
|
|
* Author : WCH
|
|
* Version : V1.0.0
|
|
* Date : 2021/06/06
|
|
* Description : Main program body.
|
|
*********************************************************************************
|
|
* Copyright (c) 2021 Nanjing Qinheng Microelectronics Co., Ltd.
|
|
* Attention: This software (modified or not) and binary are used for
|
|
* microcontroller manufactured by Nanjing Qinheng Microelectronics.
|
|
*******************************************************************************/
|
|
|
|
/*
|
|
*@Note
|
|
*VTF IRQ interrupt routine:
|
|
*This example is used to demonstrate VTF IRQ
|
|
*/
|
|
#include "debug.h"
|
|
|
|
/* Global define */
|
|
|
|
|
|
/* Global Variable */
|
|
volatile uint32_t time=0;
|
|
|
|
void SysTick_Handler(void) __attribute__((interrupt("WCH-Interrupt-fast")));
|
|
|
|
/*********************************************************************
|
|
* @fn Interrupt_VTF_Init
|
|
*
|
|
* @brief Initializes VTF.
|
|
*
|
|
* @return none
|
|
*/
|
|
void Interrupt_VTF_Init(void)
|
|
{
|
|
SetVTFIRQ((u32)SysTick_Handler,SysTicK_IRQn,0,ENABLE);
|
|
NVIC_EnableIRQ(SysTicK_IRQn);
|
|
}
|
|
|
|
/*********************************************************************
|
|
* @fn Systick_Init
|
|
*
|
|
* @brief Initializes Systick.
|
|
*
|
|
* @return none
|
|
*/
|
|
void Systick_Init(void)
|
|
{
|
|
SysTick->SR=0;
|
|
SysTick->CNT=0;
|
|
SysTick->CMP=0x20;
|
|
SysTick->CTLR=0x7;
|
|
}
|
|
|
|
/*********************************************************************
|
|
* @fn main
|
|
*
|
|
* @brief Main program.
|
|
*
|
|
* @return none
|
|
*/
|
|
int main(void)
|
|
{
|
|
SystemCoreClockUpdate();
|
|
USART_Printf_Init(115200);
|
|
printf("SystemClk:%d\r\n",SystemCoreClock);
|
|
printf( "ChipID:%08x\r\n", DBGMCU_GetCHIPID() );
|
|
printf("Interrupt VTF Test\r\n");
|
|
|
|
Interrupt_VTF_Init();
|
|
Systick_Init();
|
|
while(1)
|
|
{
|
|
|
|
}
|
|
}
|
|
|
|
/*********************************************************************
|
|
* @fn SysTick_Handler
|
|
*
|
|
* @brief This function handles SysTick exception.
|
|
*
|
|
* @return none
|
|
*/
|
|
void SysTick_Handler(void)
|
|
{
|
|
time=SysTick->CNT;
|
|
SysTick->CTLR=0;
|
|
SysTick->SR=0;
|
|
printf("delta time:%d\r\n",time-0x20);
|
|
}
|
|
|
|
|