casting pointers

[Stanislav Silnitskiy]

Hello!

I've bumped into the issue with casting...

main.c:
static ble_gap_addr_t addr0;
static uint16_t *p_host0;

int main(void) {
    p_host0 = (void*)&addr0.addr[0];

works fine, but...

beacon.c:
static ble_gap_addr_t addr1;
static uint16_t *p_host1;

void init_beacon(void) {
   p_host1 = (void*)&addr1.addr[0];

hungs in assignment when I call init_beacon() from main()

Where is rake?

[Stanislav Silnitskiy]

It must be memory alignment issue.

[monpetit]

...

void test_something(void)
{
    p_addr = &addr1;
    p_mddr = (my_gap_addr_t*)&addr1;

    show(p_addr);
    show(p_mddr);
    printf("0x%04x\r\n", p_mddr->host);
    puts("---");
    
    addr1.addr[0] = 0xab;
    addr1.addr[1] = 0xcd;
    show(p_addr);
    show(p_mddr);
    printf("0x%04x\r\n", p_mddr->host);
    puts("---");
    
    const uint8_t buffer[] = { 0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54 };
    memcpy((void*)addr1.addr, (const void*)buffer, sizeof(buffer));
    show(p_addr);
    show(p_mddr);
    printf("0x%04x\r\n", p_mddr->host);
    puts("---");
}