Flash write freezes chip no softdevice

[billt79]

Hi,

I have just used some code from your flash_write example in the SDK, it works ok but i have a couple of issues, the code is from sdk 12.7, and the chip is an nrf51422 QFAC. It does have the softdevice flashed on it, but it is not started until the chip needs to go into DFU.

FIRST PROBLEM SOLVED - the write were not word aligned due to a really stupid mistake on my behalf. second issue is still a problem

Also the second issue is a strange one, i have initialised a pointer as uint32_t * foo = (uint32_t *) 0x28000;

no matter how i increment it, it always gets incremented by 0x10. i just want to increment it by 4 each time, whether i do foo+=4; or foo++; 4 times, it always ends up as 0x27010. i have to actually declare each address i want to write to by hand or make a new variable.

Thanks in Advance, Bill.

[billt79]

So for the second issue, i did find a solution, but i am sure its not the right one! if i use this inside a foor loop it increments by 4 how i would like it to. uint32_t * addr = (address)+(i*4 >>2);

[tesc]

I do not quite understand what you do and what is the result. Incrementing the uint32_t pointer by one should actually increase the address by 4; the uint32_t has size 4 and the "next" uint32_t address would then be the old address + 4. Is that not what you see?