MSP430FR5969: Use FRAMCtl_write8 to write in 20Bit Area

MaHa

Hello everybody,

I want to write data to the range 0x10000-0x13FFF.

Can I use the function FRAMCtl_write8?
If I pass a value greater than 0x10000, the framPtr is zero or something else. :-/

Bsp:

uint32_t u32DestAddress = 0x10000;

FRAMCtl_write8(*ppu8SrcAddress, (uint8_t*) u32DestAddress , u16NumberOfBytes);

I also tested the following with the same result:

uint32_t __data20* pu32test = (uint32_t __data20*)0x10000;

FRAMCtl_write8(*ppu8SrcAddress, (uint8_t*) pu32test, u16NumberOfBytes);

Can someone help me find a solution? :-)

over 7 years ago

0 Christopher Vendette over 7 years ago

TI__Intellectual 2315 points

Hi.

An MSP team member has been assigned to review your issue. Please expect a response shortly.

0 James Evans over 7 years ago

TI__Mastermind 49692 points

Hello,

Can you check whether or not the Memory Protection Unit (MPU) is enabled in your project settings? Try this without MPU enabled and it should work.

Regards,

James

0 David Schultz over 7 years ago

Guru 26175 points

It looks like you are trying to use a function to access the upper memory area where the pointer size of 16 bits doesn't reach. If that is the case then you have other problems:

The constant 0x10000 is 16 bits (aka zero) unless you tell the compiler otherwise: 0x10000L

The function prototype casts your 32 bit destination address into a pointer. Unless pointers are 20 bits, this will remove those upper bits.

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MSP430FR5969: Use FRAMCtl_write8 to write in 20Bit Area