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/********************************** (C) COPYRIGHT *******************************
* File Name : CH58x_flash.c
* Author : WCH
* Version : V1.2
* Date : 2021/11/17
* Description
*********************************************************************************
* 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.
*******************************************************************************/
#include "CH58x_common.h"
/* RESET_EN */
#define RESET_Enable 0x00000008
#define RESET_Disable 0xFFFFFFF7
/* LOCKUP_RST_EN */
#define UART_NO_KEY_Enable 0x00000100
#define UART_NO_KEY_Disable 0xFFFFFEFF
/* BOOT_PIN */
#define BOOT_PIN_PB22 0x00000200
#define BOOT_PIN_PB11 0xFFFFFDFF
/* FLASH_WRProt */
#define FLASH_WRProt 0xFFF003FF
/*********************************************************************
* @fn FLASH_ROM_READ
*
* @brief Read Flash
*
* @param StartAddr - read address
* @param Buffer - read buffer
* @param len - read len
*
* @return none
*/
void FLASH_ROM_READ(uint32_t StartAddr, void *Buffer, uint32_t len)
{
uint32_t i, Length = (len + 3) >> 2;
uint32_t *pCode = (uint32_t *)StartAddr;
uint32_t *pBuf = (uint32_t *)Buffer;
for(i = 0; i < Length; i++)
{
*pBuf++ = *pCode++;
}
}
/*********************************************************************
* @fn UserOptionByteConfig
*
* @brief Configure User Option Byte.需在调用用户配置字生效函数后生效,且每次烧录后只能修改一次
* (使用该函数，必须使用官方提供的.S文件，同时调用该函数后，两次上电后，两线调试接口默认关闭)
*
* @param RESET_EN - 外部复位引脚使能
* @param BOOT_PIN - ENABLE-使用默认boot脚-PB22,DISABLE-使用boot脚-PB11
* @param UART_NO_KEY_EN - 串口免按键下载使能
* @param FLASHProt_Size - 写保护大小(单位4K)
*
* @return 0-Success, 1-Err
*/
uint8_t UserOptionByteConfig(FunctionalState RESET_EN, FunctionalState BOOT_PIN, FunctionalState UART_NO_KEY_EN,
uint32_t FLASHProt_Size)
{
uint32_t s, t;
FLASH_ROM_READ(0x14, &s, 4);
if(s == 0xF5F9BDA9)
{
s = 0;
FLASH_EEPROM_CMD(CMD_GET_ROM_INFO, 0x7EFFC, &s, 4);
s &= 0xFF;
if(RESET_EN == ENABLE)
s |= RESET_Enable;
else
s &= RESET_Disable;
/* bit[7:0]-bit[31-24] */
s |= ((~(s << 24)) & 0xFF000000); //高8位 配置信息取反；
if(BOOT_PIN == ENABLE)
s |= BOOT_PIN_PB22;
if(UART_NO_KEY_EN == ENABLE)
s |= UART_NO_KEY_Enable;
/* bit[23-10] */
s &= 0xFF0003FF;
s |= ((FLASHProt_Size << 10) | (5 << 20)) & 0x00FFFC00;
/*Write user option byte*/
FLASH_ROM_WRITE(0x14, &s, 4);
/* Verify user option byte */
FLASH_ROM_READ(0x14, &t, 4);
if(s == t)
return 0;
else
return 1;
}
return 1;
}
/*********************************************************************
* @fn UserOptionByteClose_SWD
*
* @brief 关两线调试接口，其余配置值保持不变.需在调用用户配置字生效函数后生效,且每次烧录后只能修改一次
* (使用该函数，必须使用官方提供的.S文件，同时调用该函数后，两次上电后，两线调试接口默认关闭)
*
* @return 0-Success, 1-Err
*/
uint8_t UserOptionByteClose_SWD(void)
{
uint32_t s, t;
FLASH_ROM_READ(0x14, &s, 4);
if(s == 0xF5F9BDA9)
{
FLASH_EEPROM_CMD(CMD_GET_ROM_INFO, 0x7EFFC, &s, 4);
s &= ~((1 << 4) | (1 << 7)); //禁用调试功能， 禁用SPI读写FLASH
/* bit[7:0]-bit[31-24] */
s &= 0x00FFFFFF;
s |= ((~(s << 24)) & 0xFF000000); //高8位 配置信息取反；
/*Write user option byte*/
FLASH_ROM_WRITE(0x14, &s, 4);
/* Verify user option byte */
FLASH_ROM_READ(0x14, &t, 4);
if(s == t)
return 0;
else
return 1;
}
return 1;
}
/*********************************************************************
* @fn UserOptionByte_Active
*
* @brief 用户配置字生效函数，执行后自动复位
*
* @return 0-Success, 1-Err
*/
void UserOptionByte_Active(void)
{
FLASH_ROM_SW_RESET();
sys_safe_access_enable();
R16_INT32K_TUNE = 0xFFFF;
sys_safe_access_enable();
R8_RST_WDOG_CTRL |= RB_SOFTWARE_RESET;
sys_safe_access_disable();
while(1);
}
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