168 lines
4.7 KiB
C
168 lines
4.7 KiB
C
/********************************** (C) COPYRIGHT *******************************
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* File Name : CH59x_flash.c
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* Author : WCH
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* Version : V1.2
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* Date : 2021/11/17
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* Description
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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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#include "CH59x_common.h"
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/* RESET_EN */
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#define RESET_Enable 0x00000008
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#define RESET_Disable 0xFFFFFFF7
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/* LOCKUP_RST_EN */
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#define UART_NO_KEY_Enable 0x00000100
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#define UART_NO_KEY_Disable 0xFFFFFEFF
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/* BOOT_PIN */
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#define BOOT_PIN_PB22 0x00000200
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#define BOOT_PIN_PB11 0xFFFFFDFF
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/* FLASH_WRProt */
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#define FLASH_WRProt 0xFFF003FF
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/*********************************************************************
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* @fn FLASH_ROM_READ
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*
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* @brief Read Flash
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*
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* @param StartAddr - read address
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* @param Buffer - read buffer
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* @param len - read len
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*
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* @return none
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*/
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void FLASH_ROM_READ(uint32_t StartAddr, void *Buffer, uint32_t len)
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{
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uint32_t i, Length = (len + 3) >> 2;
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uint32_t *pCode = (uint32_t *)StartAddr;
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uint32_t *pBuf = (uint32_t *)Buffer;
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for(i = 0; i < Length; i++)
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{
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*pBuf++ = *pCode++;
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}
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}
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/*********************************************************************
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* @fn UserOptionByteConfig
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*
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* @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
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* (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)
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*
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* @param RESET_EN - 外部复位引脚使能
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* @param BOOT_PIN - ENABLE-使用默认boot脚-PB22,DISABLE-使用boot脚-PB11
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* @param UART_NO_KEY_EN - 串口免按键下载使能
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* @param FLASHProt_Size - 写保护大小(单位4K)
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*
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* @return 0-Success, 1-Err
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*/
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uint8_t UserOptionByteConfig(FunctionalState RESET_EN, FunctionalState BOOT_PIN, FunctionalState UART_NO_KEY_EN,
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uint32_t FLASHProt_Size)
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{
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uint32_t s, t;
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FLASH_ROM_READ(0x14, &s, 4);
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if(s == 0xF5F9BDA9)
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{
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s = 0;
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FLASH_EEPROM_CMD(CMD_GET_ROM_INFO, 0x7EFFC, &s, 4);
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s &= 0xFF;
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if(RESET_EN == ENABLE)
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s |= RESET_Enable;
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else
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s &= RESET_Disable;
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/* bit[7:0]-bit[31-24] */
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s |= ((~(s << 24)) & 0xFF000000); //高8位 配置信息取反；
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if(BOOT_PIN == ENABLE)
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s |= BOOT_PIN_PB22;
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if(UART_NO_KEY_EN == ENABLE)
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s |= UART_NO_KEY_Enable;
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/* bit[23-10] */
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s &= 0xFF0003FF;
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s |= ((FLASHProt_Size << 10) | (5 << 20)) & 0x00FFFC00;
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/*Write user option byte*/
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FLASH_ROM_WRITE(0x14, &s, 4);
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/* Verify user option byte */
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FLASH_ROM_READ(0x14, &t, 4);
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if(s == t)
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return 0;
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else
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return 1;
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}
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return 1;
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}
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/*********************************************************************
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* @fn UserOptionByteClose_SWD
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*
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* @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
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* (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)
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*
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* @return 0-Success, 1-Err
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*/
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uint8_t UserOptionByteClose_SWD(void)
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{
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uint32_t s, t;
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FLASH_ROM_READ(0x14, &s, 4);
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if(s == 0xF5F9BDA9)
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{
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FLASH_EEPROM_CMD(CMD_GET_ROM_INFO, 0x7EFFC, &s, 4);
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s &= ~((1 << 4) | (1 << 7)); //禁用调试功能， 禁用SPI读写FLASH
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/* bit[7:0]-bit[31-24] */
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s &= 0x00FFFFFF;
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s |= ((~(s << 24)) & 0xFF000000); //高8位 配置信息取反；
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/*Write user option byte*/
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FLASH_ROM_WRITE(0x14, &s, 4);
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/* Verify user option byte */
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FLASH_ROM_READ(0x14, &t, 4);
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if(s == t)
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return 0;
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else
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return 1;
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}
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return 1;
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}
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/*********************************************************************
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* @fn UserOptionByte_Active
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*
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* @brief 用户配置字生效函数，执行后自动复位
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*
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* @return 0-Success, 1-Err
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*/
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void UserOptionByte_Active(void)
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{
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FLASH_ROM_SW_RESET();
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sys_safe_access_enable();
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R16_INT32K_TUNE = 0xFFFF;
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sys_safe_access_disable();
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sys_safe_access_enable();
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R8_RST_WDOG_CTRL |= RB_SOFTWARE_RESET;
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sys_safe_access_disable();
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while(1);
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}
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