CH32V103 Flash每次Read出来都是0XFFFF是什么问题？

您好，若你需要读取FLASH的存储内容，只需要读对应的地址就可以了。附件为CH32V103 FLASH读操作例程，你可以参考下。注意下，若你在读之前有解除读保护操作，且解除之后并没有写入，那读出来就会是0xFFFF。
CH32V103 FLASH读操作.zip

我换到标准读写了，目前写入的时候，在FLASH_Lock的时候卡住，出不来。


保存前，禁用中断，LOCK后再恢复，目前看效果一样。

您好，若你是FLASH写入出现问题，当采用快速编程方式时，需要先执行快速编程模式解锁操作，然后再进行操作，如下图。具体可参考我们手册闪存操作流程和EVT FLASH例程。
CH32V103应用手册：http://www.wch.cn/downloads/CH32xRM_PDF.html
CH32V103EVT例程：http://www.wch.cn/downloads/CH32V103EVT_ZIP.html

我用demo代码，没问题。


然后用自己的代码，就不行了。 用到了ADC-DMA中断， 外部中断，Freertos.
EXTI0_IRQHandler中调用的Flash写入，为了排除是不是中断函数里不能读写Flash。 我把代码加在Main中了


main读了Flash，不过出来全部是0xFF。 随后执行写入操作（标准写，不是Fast）。 这时候暂停代码，发现停止在
FLASH_WaitForLastOperation函数入口。
void Read_ConfigData(void){ ConfigInfo.iMaxVoltage = *(__IO uint16_t *)(FLASH_POWERDATA_ADDR); ConfigInfo.iMaxCurrent = *(__IO uint16_t *)(FLASH_POWERDATA_ADDR+0x04); ConfigInfo.iTime1 = *(__IO uint16_t *)(FLASH_POWERDATA_ADDR+0x08); ConfigInfo.iTime2 = *(__IO uint16_t *)(FLASH_POWERDATA_ADDR+0x0C); ConfigInfo.iAutoTime = *(__IO uint16_t *)(FLASH_POWERDATA_ADDR+0x10); ConfigInfo.iInterval= *(__IO uint16_t *)(FLASH_POWERDATA_ADDR+0x014); if(0xFFFF == ConfigInfo.iMaxVoltage) { InitPowerInfo(); Save_ConfigData(); }}

void Save_ConfigData(void){ /*FLASH_Unlock_Fast(); FLASH_ErasePage_Fast(FLASH_POWERDATA_ADDR); FLASH_BufReset(); FLASH_BufLoad(FLASH_POWERDATA_ADDR, (u32)ConfigInfo.iMaxVoltage, (u32)ConfigInfo.iMaxCurrent, (u32)ConfigInfo.iTime1, (u32)ConfigInfo.iTime2); FLASH_ProgramPage_Fast(FLASH_POWERDATA_ADDR); FLASH_Lock_Fast();*/ volatile FLASH_Status FLASHStatus = FLASH_COMPLETE; volatile TestStatus MemoryEraseStatus = PASSED; uint32_t EraseCounter = 0x0, Address = 0x0; uint32_t WRPR_Value = 0xFFFFFFFF; uint32_t NbrOfPage; __disable_irq(); FLASH_Unlock(); WRPR_Value = FLASH_GetWriteProtectionOptionByte(); NbrOfPage = (PAGE_WRITE_END_ADDR - FLASH_POWERDATA_ADDR) / FLASH_PAGE_SIZE; if((WRPR_Value & FLASH_PAGES_TO_BE_PROTECTED) != 0x00) { FLASH_ClearFlag(FLASH_FLAG_BSY | FLASH_FLAG_EOP | FLASH_FLAG_PGERR | FLASH_FLAG_WRPRTERR); for(EraseCounter = 0; (EraseCounter < NbrOfPage) && (FLASHStatus == FLASH_COMPLETE); EraseCounter++) { FLASHStatus = FLASH_ErasePage(FLASH_POWERDATA_ADDR + (FLASH_PAGE_SIZE * EraseCounter)); if(FLASHStatus != FLASH_COMPLETE) { printf("FLASH Erase ERR at Page%drn", EraseCounter + 60); } printf("FLASH Erase Page%d...rn", EraseCounter + 60); } Address = FLASH_POWERDATA_ADDR; while((Address < PAGE_WRITE_END_ADDR) && (MemoryEraseStatus != FAILED)) { if((*(__IO uint16_t *)Address) != 0xFFFF) { MemoryEraseStatus = FAILED; } Address += 2; } if(MemoryEraseStatus == FAILED) { printf("Erase Flash FAIL!rn"); printf("rn"); } else { printf("Erase Flash PASS!rn"); } Address = FLASH_POWERDATA_ADDR; //while((Address < PAGE_WRITE_END_ADDR) && (FLASHStatus == FLASH_COMPLETE)) FLASHStatus = FLASH_ProgramHalfWord(Address, ConfigInfo.iMaxVoltage); Address = Address + 2; FLASHStatus = FLASH_ProgramHalfWord(Address, ConfigInfo.iMaxCurrent); Address = Address + 2; FLASHStatus = FLASH_ProgramHalfWord(Address, ConfigInfo.iTime1); Address = Address + 2; FLASHStatus = FLASH_ProgramHalfWord(Address, ConfigInfo.iTime2); Address = Address + 2; FLASHStatus = FLASH_ProgramHalfWord(Address, ConfigInfo.iAutoTime); Address = Address + 2; FLASHStatus = FLASH_ProgramHalfWord(Address, ConfigInfo.iInterval); Address = Address + 2; while((Address < PAGE_WRITE_END_ADDR) && (FLASHStatus == FLASH_COMPLETE)) { FLASHStatus = FLASH_ProgramHalfWord(Address, 0xAA); } /* Address = PAGE_WRITE_START_ADDR; while((Address < PAGE_WRITE_END_ADDR) && (MemoryProgramStatus != FAILED)) { if((*(__IO uint16_t *)Address) != Data) { MemoryProgramStatus = FAILED; } Address += 2; } if(MemoryProgramStatus == FAILED) { printf("Memory Program FAIL!rn"); } else { printf("Memory Program PASS!rn"); } */ } FLASH_Lock(); __enable_irq();}

您好，我们FLASH标准库函数中有多处调用到FLASH_WaitForLastOperation这个函数，你可以通过打印调试的方式看程序具体是停止在哪个函数里了