안녕하세요.
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MCU 초보입니다.
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MCU 데이터시트에 보니 MTP 주소를 0x1234 ~ 0x4000까지 쓸 수 있다고 나와있습니다.
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제가 하고싶은 구현은 이 주소에 모터 RPM값을 저장하여 그 저장한 값을 같은 프로젝트 안에 있는 코드에서 사용하고 싶습니다.
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아래는 데이터 시트에 나와있는 예시코드입니다.
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1. The starting address in the programming procedure assigns at 0x4000.
2. Using __u8WritePara to program the desired data into user-MTP.
3. The library performs the programming procedure. After the programming is complete, the
programming times will increase automatically.
4. The programming address will not change when programming is less than 1000 times. Once the
programming reaches 1000 times, the programming address will increase a word-space automatically.
5. If the programmed data matches the existing data in the user-MTP, the library will not execute the
programming procedure. This mechanism reduces unnecessary programming and only programs
when data are different.
6. In this example, the array assigns 4-space, and the programming can up to 4000 times.


// assign 4-space to programming data
const U32 _u32Data[4] __attribute__((section(".ARM.__at_0x00004000"))) __attribute__((used)) = {0};
// assign a structure for programming procedure
volatile User_Parameter_Type _stPara;
// return value from programming procedure
U8 u8WriteStatus;
// 16-bit variable for read
U16 u16ReadData;
int main(void)
{
// define MTP address
 _stPara.u32StartAddress = (U32)&_u32Data;
 // byte length changes to word length
_stPara.u32WordLength = (sizeof(_u32Data)) >> 2;
// checksum = StartAddress + EndAddress
_stPara.u32CheckSum = _stPara.u32StartAddress + (_stPara.u32StartAddress + sizeof(_u32Data));
__ParkingMCU(); // stop interrupt request
 u8WriteStatus = __u8WritePara(_stPara, 0x1234); // write 0x1234 to user-MTP
 __RecoverMCU(); // recover interrupt request
u16ReadData = __u16ReadPara(_stPara); // read data from user-MTP

 while(1);
} 





모터 RPM 지령은 u16user_speedcmd = 1000;  이런식으로 작성합니다.

도와주십시오 ㅜㅜ