82 lines
2.5 KiB
C
82 lines
2.5 KiB
C
/********************************** (C) COPYRIGHT *******************************
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* File Name : main.c
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* Author : WCH
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* Version : V1.0.0
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* Date : 2021/06/06
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* Description : Main program body.
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*********************************************************************************
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* Copyright (c) 2021 Nanjing Qinheng Microelectronics Co., Ltd.
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* Attention: This software (modified or not) and binary are used for
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* microcontroller manufactured by Nanjing Qinheng Microelectronics.
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*******************************************************************************/
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/*
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*@Note
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*BKP routine:
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*Intrusion detection pin (PC13), when an intrusion detection event occurs, all data
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*backup register contents are cleared,And trigger the intrusion detection interrupt.
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*
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*/
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#include "debug.h"
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/*********************************************************************
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* @fn BKP_Tamper_Init
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*
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* @brief Initializes the BKP Tamper.
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*
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* @return none
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*/
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void BKP_Tamper_Init(void)
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{
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NVIC_InitTypeDef NVIC_InitStructure = {0};
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RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR | RCC_APB1Periph_BKP, ENABLE);
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BKP_TamperPinCmd(DISABLE);
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PWR_BackupAccessCmd(ENABLE);
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BKP_ClearFlag();
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BKP_WriteBackupRegister(BKP_DR1, 0x9880);
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BKP_WriteBackupRegister(BKP_DR2, 0x5678);
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BKP_WriteBackupRegister(BKP_DR3, 0xABCD);
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BKP_WriteBackupRegister(BKP_DR4, 0x3456);
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printf("BKP_DR1:%08x\r\n", BKP->DATAR1);
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printf("BKP_DR2:%08x\r\n", BKP->DATAR2);
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printf("BKP_DR3:%08x\r\n", BKP->DATAR3);
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printf("BKP_DR4:%08x\r\n", BKP->DATAR4);
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BKP_TamperPinLevelConfig(BKP_TamperPinLevel_High); //TPAL:0，PC13 set input-pull-down
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// BKP_TamperPinLevelConfig( BKP_TamperPinLevel_Low ); //TPAL:1，PC13 input-pull-up
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NVIC_InitStructure.NVIC_IRQChannel = TAMPER_IRQn;
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NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
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NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
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NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
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NVIC_Init(&NVIC_InitStructure);
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BKP_ITConfig(ENABLE);
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BKP_TamperPinCmd(ENABLE);
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}
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/*********************************************************************
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* @fn main
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*
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* @brief Main program.
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*
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* @return none
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*/
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int main(void)
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{
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SystemCoreClockUpdate();
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NVIC_PriorityGroupConfig(NVIC_PriorityGroup_4);
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USART_Printf_Init(115200);
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printf("SystemClk:%d\r\n", SystemCoreClock);
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printf( "ChipID:%08x\r\n", DBGMCU_GetCHIPID() );
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BKP_Tamper_Init();
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while(1);
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}
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