问答

#define OB_BASE ((uint32_t)0x1FFFF800) /*!< FLASH Option Bytes base address */#define OB ((OB_TypeDef *) OB_BASE) FLASH_Status FLASH_OB_Erase(void) { uint16_t rdptmp = OB_RDP_Level_0; FLASH_Status status = FLASH_COMPLETE; /* Get the actual read protection Option Byte value */ if(FLASH_OB_GetRDP() != RESET) { rdptmp = 0x00; } /* Wait for last operation to be completed */ status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT); if(status == FLASH_COMPLETE) { /* If the previous operation is completed, proceed to erase the option bytes */ FLASH->CR |= FLASH_CR_OPTER; FLASH->CR |= FLASH_CR_STRT; /* Wait for last operation to be completed */ status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT); if(status == FLASH_COMPLETE) { /* If the erase operation is completed, disable the OPTER Bit */ FLASH->CR &= ~FLASH_CR_OPTER; /* Enable the Option Bytes Programming operation */ FLASH->CR |= FLASH_CR_OPTPG; /* Restore the last read protection Option Byte value */ OB->RDP = (uint16_t)rdptmp; /* Wait for last operation to be completed */ status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT); if(status != FLASH_TIMEOUT) { /* if the program operation is completed, disable the OPTPG Bit */ FLASH->CR &= ~FLASH_CR_OPTPG; } } else { if (status != FLASH_TIMEOUT) { /* Disable the OPTPG Bit */ FLASH->CR &= ~FLASH_CR_OPTPG; } } } /* Return the erase status */ return status; } 请问有用过极海的读保护的吗，这个OPT.FLM文件去哪找

应用资料啥时候有啊，给我们学习学习

keil涉嫌盗版不能用 有没有相关的下载链接，使用教程等。

内部空间FLASH读写一页的操作函数例程，应该怎么写？

Sourced from process XX ， XX 是个数字，在好多器件手册里看到，XX 也因器件不同而不同，请教这是啥意思？

51单片机，keil V4 编译器：已定义：code unsigned char C_LED7_CODE_ADDR[]={xxxxxxx}; 我现在需要重新定义一个常数数组C_LED7_CODE[]，其起始地址为上述数组地址减32、不影响数组内容和其它程序，可以做到吗？