S32 Design StudioのトピックHow to read the address between bootloader and APP

How to read the address between bootloader and APP

chcd007 — Tue, 22 Feb 2022 01:32:59 GMT

In my program, the Bootloader program starts at address 0 and then jump to app starts at address 0x6040. I need to read 4 bytes of address 0x6000 in the app routine. I used

vl32 = *((*uint32_t)0x6000);

vl8 [i] = * ((* uint8_t) (0 x6000 + i)); (i = 0... 3)

two way to read. The result is a reset of the MCU. How can I read the data of this address

Re: How to read the address between bootloader and APP

jiri_kral — Tue, 22 Feb 2022 08:27:21 GMT

Hi,

the first expression can't be compiled - there must be some error message in build console (if it is copy/pasted code snippet).

you can use for example:
data=*(uint32_t*)0x6000;

where data is

uint32_t data;

or you can use memcpy function:
memcpy(target,(uint8_t*)0x6000,4);

where target is:

uint8_t target[4];

Jiri