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]

.. even editing SDK's internals will not help though.. SoftDevice expects the intact ble_gap_addr_t struct.

So, the only option is to copy the address from/to SDK's structs into specially aligned space:

typedef struct {
   uint16_t extra_aligner; // required to access addr[2] by uint32_t pointer
   uint8_t addr[BLE_GAP_ADDR_LEN];
} aligned_addr __attribute__((aligned(32)));

static aligned_addr addr;    
static uint32_t *const p_net = (void*)&aligned_addr.addr[2];
static uint16_t *const p_host = (void*)&aligned_addr.addr[0];

and now it is possible to assign some (see BL specs. as per PUBLIC address!) address in the form NE:TW:OR:K_:HO:ST