小编Sor*_*enp的帖子

I think my pointer game is rusty, I can't seem to get the for loop implementation to work. It's like the pointer isn't incremented along with the array. Any suggestions?

I implemented a "manual" version of what i want the loop to do. It worked as expected.

typedef struct txstruct_t
{
    uint8_t tx[8];
    void(*send)(struct txstruct_t *cthis, uint8_t arr[8]);

}txstruct_t;

void send(txstruct_t *cthis, uint8_t arr[8]);


void loop() 
{
    txstruct_t txobj;
    uint8_t buf[8] = { 1, 0, 1, 0, 1, 0, 1, …

所以我正在研究一些BLE 实现的教程代码，我遇到了这个我以前从未见过的语法。

&p_ble_evt->evt.gatts_evt.params.write;

这是我不确定的 &foo;bar-&baz 部分。

我尝试“搜索”代码部分，然后尝试通过https://cdecl.org/运行它。但是没有了解这段代码的作用/是什么。

/**@brief Function for handling the Write event.
 *
 * @param[in]   p_midi_service   LED Button Service structure.
 * @param[in]   p_ble_evt        Event received from the BLE stack.
 */
static void on_write(ble_midi_service_t * p_midi_service, ble_evt_t const * p_ble_evt)
{
    ble_gatts_evt_write_t * p_evt_write = (ble_gatts_evt_write_t *) &p_ble_evt->evt.gatts_evt.params.write;

    if ((p_evt_write->handle == p_midi_service->data_io_char_handles.value_handle) &&
        (p_evt_write->len == 1) &&
        (p_midi_service->evt_handler != NULL))
    {
      // Handle what happens on a write event to the characteristic value
    }

    // …