Esempi in C++ (Cpp) per ble_att_mtu

Esempio n. 1

File: newtmgr_ble.c Progetto: a3zzat/incubator-mynewt-core

uint16_t
nmgr_ble_get_mtu(struct os_mbuf *req) {

    uint16_t conn_handle;
    uint16_t mtu;

    memcpy(&conn_handle, OS_MBUF_USRHDR(req), sizeof (conn_handle));
    mtu = ble_att_mtu(conn_handle);
    if (!mtu) {
        assert(0);
    }

    /* 3 is the number of bytes for ATT notification base */
    mtu = mtu - 3;

    return (mtu);
}

Esempio n. 2

File: ble_att_clt.c Progetto: Eichhoernchen/incubator-mynewt-core

int
ble_att_clt_tx_prep_write(uint16_t conn_handle,
                          struct ble_att_prep_write_cmd *req,
                          void *value, uint16_t value_len)
{
#if !NIMBLE_OPT(ATT_CLT_PREP_WRITE)
    return BLE_HS_ENOTSUP;
#endif

    struct os_mbuf *txom;
    int rc;

    if (req->bapc_handle == 0) {
        return BLE_HS_EINVAL;
    }

    if (req->bapc_offset + value_len > BLE_ATT_ATTR_MAX_LEN) {
        return BLE_HS_EINVAL;
    }

    if (value_len >
        ble_att_mtu(conn_handle) - BLE_ATT_PREP_WRITE_CMD_BASE_SZ) {

        return BLE_HS_EINVAL;
    }

    rc = ble_att_clt_build_prep_write_req(conn_handle, req, value, value_len,
                                          &txom);
    if (rc != 0) {
        return rc;
    }

    rc = ble_att_clt_tx_req(conn_handle, txom);
    if (rc != 0) {
        return rc;
    }

    return 0;
}