113 lines
4.5 KiB
C
113 lines
4.5 KiB
C
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/******************************************************************************************************************************************
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* 文件名称: SWM341_flash.c
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* 功能说明: 使用芯片的IAP功能将片上Flash模拟成EEPROM来保存数据，掉电后不丢失
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* 技术支持: http://www.synwit.com.cn/e/tool/gbook/?bid=1
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* 注意事项:
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* 版本日期: V1.0.0 2016年1月30日
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* 升级记录:
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*******************************************************************************************************************************************
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* @attention
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*
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* THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS WITH CODING INFORMATION
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* REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME. AS A RESULT, SYNWIT SHALL NOT BE HELD LIABLE
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* FOR ANY DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE CONTENT
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* OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING INFORMATION CONTAINED HEREIN IN CONN-
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* -ECTION WITH THEIR PRODUCTS.
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*
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* COPYRIGHT 2012 Synwit Technology
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*******************************************************************************************************************************************/
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#include "SWM341.h"
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#include "SWM341_flash.h"
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const IAP_Cache_Reset_t IAP_Cache_Reset = (IAP_Cache_Reset_t)0x11000401;
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const IAP_Flash_Param_t IAP_Flash_Param = (IAP_Flash_Param_t)0x11000431;
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const IAP_Flash_Erase_t IAP_Flash_Erase = (IAP_Flash_Erase_t)0x11000471;
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const IAP_Flash_Write_t IAP_Flash_Write = (IAP_Flash_Write_t)0x110004C1;
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/******************************************************************************************************************************************
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* 函数名称: FLASH_Erase()
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* 功能说明: FLASH扇区擦除，每个扇区4K字节
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* 输 入: uint32_t addr 要擦除扇区的地址，必须4K对齐，即addr%4096 == 0
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* 输 出: uint32_t FLASH_RES_OK、FLASH_RES_TO、FLASH_RES_ERR
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* 注意事项: 无
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******************************************************************************************************************************************/
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uint32_t FLASH_Erase(uint32_t addr)
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{
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if(addr % 4096 != 0) return FLASH_RES_ERR;
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__disable_irq();
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IAP_Flash_Erase(addr/4096, 0x0B11FFAC);
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IAP_Cache_Reset((FMC->CACHE | FMC_CACHE_CCLR_Msk), 0x0B11FFAC); // Cache Clear
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__enable_irq();
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return FLASH_RES_OK;
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}
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/******************************************************************************************************************************************
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* 函数名称: FLASH_Write()
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* 功能说明: FLASH数据写入
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* 输 入: uint32_t addr 数据要写入到Flash中的地址，四字对齐
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* uint32_t buff[] 要写入Flash中的数据
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* uint32_t count 要写入数据的个数，以字为单位，且必须是4的整数倍，即最少写入4个字
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* 输 出: uint32_t FLASH_RES_OK、FLASH_RES_TO、FLASH_RES_ERR
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* 注意事项: 无
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******************************************************************************************************************************************/
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uint32_t FLASH_Write(uint32_t addr, uint32_t buff[], uint32_t count)
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{
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if(addr % 16 != 0) return FLASH_RES_ERR;
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if(count % 4 != 0) return FLASH_RES_ERR;
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__disable_irq();
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IAP_Flash_Write(addr, (uint32_t)buff, count/4, 0x0B11FFAC);
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IAP_Cache_Reset((FMC->CACHE | FMC_CACHE_CCLR_Msk), 0x0B11FFAC); // Cache Clear
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__enable_irq();
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return FLASH_RES_OK;
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}
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/******************************************************************************************************************************************
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* 函数名称: Flash_Param_at_xMHz()
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* 功能说明: 将Flash参数设置成xMHz主频下运行时所需的参数
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* 输 入: uint32_t x 取值30、40、80、120、150
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* 输 出: 无
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* 注意事项: 系统主频越高，Flash访问等待周期越长
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******************************************************************************************************************************************/
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void Flash_Param_at_xMHz(uint32_t x)
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{
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__disable_irq();
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switch(x)
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{
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case 30:
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IAP_Flash_Param(0x8949, 0x0FA1, 0x0B11FFAC);
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break;
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case 40:
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IAP_Flash_Param(0x8A49, 0x14A9, 0x0B11FFAC);
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break;
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case 80:
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IAP_Flash_Param(0xD349, 0x294A, 0x0B11FFAC);
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break;
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case 120:
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IAP_Flash_Param(0x11C89, 0x3D6B, 0x0B11FFAC);
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break;
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case 150:
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default:
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IAP_Flash_Param(0x16589, 0x4C74, 0x0B11FFAC);
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break;
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}
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__enable_irq();
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}
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