first submission
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qiyongshuang
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/********************************** (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 : 2022/08/20
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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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With HOST_IAP, with as IAP's supporting APP use. The generated Hex file needs to be converted to a bin file.
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*/
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#include "debug.h"
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#include "stdio.h"
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#include "string.h"
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/*******************************************************************************/
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/* Macro Definitions */
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#define DEF_FLASH_PAGE_SIZE 0x100
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/* APP CODE ADDR Setting */
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#define DEF_APP_CODE_START_ADDR 0x08005000 /* IAP Flash Operation start address, user code start address */
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#ifdef CH32V20x_D6
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#define DEF_APP_CODE_END_ADDR 0x08010000 /* IAP Flash Operation end address, user code end address */
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/* Please refer to link.ld file for accuracy flash size, the size here is the smallest available size */
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/* CH32V203C8/G8/F8 - 0x08010000 (64K), CH32F203C6 - 0x08008000 (32K) */
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#else
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#define DEF_APP_CODE_END_ADDR 0x08020000 /* IAP Flash Operation end address, user code end address */
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/* Please refer to link.ld file for accuracy flash size, the size here is the smallest available size */
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/* CH32V203RB/208x - 0x08020000 (128K) */
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#endif
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#define DEF_APP_CODE_MAXLEN (DEF_APP_CODE_END_ADDR-DEF_APP_CODE_START_ADDR) /* IAP Flash Operation size, user code max size */
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/* Verify CODE ADDR Setting */
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#define DEF_VERIFY_CODE_START_ADDR 0x08004F00 /* IAP Flash verify-code start address */
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#define DEF_VERIFY_CODE_END_ADDR 0x08005000 /* IAP Flash verify-code end address */
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#define DEF_VERIFY_CODE_MAXLEN (DEF_VERIFY_CODE_END_ADDR-DEF_VERIFY_CODE_START_ADDR) /* IAP Flash verify-code max size */
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#define DEF_VERIFY_CODE_LEN 0x10 /* IAP Flash verify-code actual length, be careful not to exceed the DEF_VERIFY_CODE_MAXLEN */
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/* Flash Operation Key Setting */
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#define DEF_FLASH_OPERATION_KEY_CODE_0 0x1A86FF00 /* IAP Flash operation Key-code 0 */
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#define DEF_FLASH_OPERATION_KEY_CODE_1 0x55AA55AA /* IAP Flash operation Key-code 1 */
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/*******************************************************************************/
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/* Flash Operation Key */
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volatile uint32_t Flash_Operation_Key0;
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volatile uint32_t Flash_Operation_Key1;
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/*******************************************************************************/
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/* Function Statement */
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void GPIO_Cfg_init( void );
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uint8_t PA0_Check( void );
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uint8_t IAP_VerifyCode_Erase( void );
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uint8_t IAP_Flash_Erase( uint32_t address, uint32_t length );
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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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uint8_t ret;
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Delay_Init( );
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Delay_Ms(500);
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USART_Printf_Init(115200);
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printf("SystemClk:%d\r\n",SystemCoreClock);
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printf("This is a APP code for a IAP application\n" );
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GPIO_Cfg_init( );
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Flash_Operation_Key0 = DEF_FLASH_OPERATION_KEY_CODE_0;
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while(1)
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{
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ret = PA0_Check( );
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if( ret )
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{
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printf( "Reset Chip, prepare to Jump To IAP\r\n" );
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printf( "Erase Verify-Code\r\n" );
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IAP_VerifyCode_Erase( );
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NVIC_SystemReset( );
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}
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Delay_Ms( 200 );
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printf( "USER Code\r\n" );
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}
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}
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/*********************************************************************
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* @fn IAP_Flash_Erase
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*
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* @brief Erase Flash In page(256 bytes),Specify length & address,
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* Based On Fast Flash Operation,
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* With address protection and program runaway protection.
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*
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* @return 0: Operation Success
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* See notes for other errors
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*/
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uint8_t IAP_Flash_Erase( uint32_t address, uint32_t length )
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{
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uint32_t i;
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uint32_t erase_addr;
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uint32_t erase_len;
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volatile uint32_t page_cnts;
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volatile uint32_t page_addr;
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/* Set initial value */
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erase_addr = address;
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page_addr = address;
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erase_len = length;
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if( (erase_len%256) == 0 )
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{
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page_cnts = erase_len/256;
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}
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else
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{
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page_cnts = (erase_len/256) + 1;
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}
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/* Verify Keys, No flash operation if keys are not correct */
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if( (Flash_Operation_Key0 != DEF_FLASH_OPERATION_KEY_CODE_0) || (Flash_Operation_Key1 != DEF_FLASH_OPERATION_KEY_CODE_1) )
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{
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/* ERR: Risk of code running away */
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return 0xFF;
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}
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/* Verify Address, No flash operation if the address is out of range */
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if( ((erase_addr >= DEF_APP_CODE_START_ADDR) && (erase_addr <= DEF_APP_CODE_END_ADDR)) || ((erase_addr >= DEF_VERIFY_CODE_START_ADDR) && (erase_addr <= DEF_VERIFY_CODE_END_ADDR)) )
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{
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for( i=0; i<page_cnts; i++ )
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{
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/* Verify Keys, No flash operation if keys are not correct */
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if( Flash_Operation_Key0 != DEF_FLASH_OPERATION_KEY_CODE_0 )
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{
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/* ERR: Risk of code running away */
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return 0xFF;
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}
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FLASH_Unlock_Fast( );
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FLASH_ErasePage_Fast( page_addr );
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page_addr += DEF_FLASH_PAGE_SIZE;
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}
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}
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return 0;
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}
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/*********************************************************************
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* @fn IAP_VerifyCode_Erase
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*
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* @brief Erase IAP VerifyCode, Based On Fast Flash Operation.
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* With address protection and program runaway protection.
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*
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* @return ret : The meaning of 'ret' can be found in the notes of the
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* corresponding function.
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*/
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uint8_t IAP_VerifyCode_Erase( void )
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{
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uint8_t ret;
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/* Verify Code Erase */
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Flash_Operation_Key1 = DEF_FLASH_OPERATION_KEY_CODE_1;
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ret = IAP_Flash_Erase( DEF_VERIFY_CODE_START_ADDR, DEF_VERIFY_CODE_MAXLEN );
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Flash_Operation_Key1 = 0;
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if( ret != 0 )
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{
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return ret;
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}
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return 0;
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}
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/*********************************************************************
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* @fn GPIO_Cfg_init
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*
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* @brief GPIO init
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*
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* @return none
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*/
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void GPIO_Cfg_init( void )
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{
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GPIO_InitTypeDef GPIO_InitStructure;
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RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
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GPIO_Init(GPIOA, &GPIO_InitStructure);
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}
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/*********************************************************************
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* @fn PA0_Check
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*
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* @brief Check PA0 state
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*
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* @return 0 - not Press Down
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* 1 - Press Down
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*/
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uint8_t PA0_Check( void )
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{
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u8 i;
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GPIO_Cfg_init();
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i = GPIO_ReadInputDataBit(GPIOA, GPIO_Pin_0);
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if (i == 0)
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{
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Delay_Ms(200);
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i = GPIO_ReadInputDataBit(GPIOA, GPIO_Pin_0);
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if (i == 0)
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{
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return 1;
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}
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}
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return 0;
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}
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