BLE Uart,how to sent out faster after connected()

[yoyou]

hello

NCS2.0.2/2.3.0, vscode

• Bluetooth: Peripheral UART

i add a fun as follow:

void PutToBleSend()

{

    struct uart_data_t *buf = k_malloc(sizeof(struct uart_data_t));

    if (buf) {

        sprintf(buf->data, "KEY-003");

        buf->len = strlen(buf->data);

         k_fifo_put(&fifo_uart_rx_data, buf);

    } else {

        printk("[log] No buffer\n");

        return;

    }

}

 

and call it in 

static void connected(struct bt_conn *conn, uint8_t err);

but bt_nus_send()  will return -128 in void ble_write_thread(void);

log:

No ATT channel for MTU 24
No buffer available to send notification

wait 2 second,  bt_nus_send() will send ok.

  

1.How can data be sent out faster after connected()? had Paired;

2.How to active creat a bounds.(slave send pairing to android nrf_ToolBox app)

3.How to know has paired? after bt_conn_auth_passkey_confirm()

  

 Best regards

[Sigurd]

Hi!

Take a look at how the throughput sample is configured. That sample is configured for optimizing BLE throughput.

https://github.com/nrfconnect/sdk-nrf/blob/v2.3.0/samples/bluetooth/throughput/prj.conf

[yoyou]

thanks for reply,

tow questions:

1.is there a function for know has paired? 

2.nrf52820 system off take 36uA, how to reduce power consumption? see SCH as follow:

static int disable_ds_1(const struct device *dev)

{

    ARG_UNUSED(dev);

    pm_policy_state_lock_get(PM_STATE_SOFT_OFF);// NCS2.0.0+

    return 0;

}

SYS_INIT(disable_ds_1, PRE_KERNEL_2, 0);

void go_system_off(char n)

{

    printk("%s system off (%d)\n", CONFIG_BOARD,n);

    // Configure to generate PORT event (wakeup) on button 1 press.

    nrf_gpio_cfg_input(NRF_DT_GPIOS_TO_PSEL(DT_NODELABEL(button0), gpios),NRF_GPIO_PIN_NOPULL);

    nrf_gpio_cfg_sense_set(NRF_DT_GPIOS_TO_PSEL(DT_NODELABEL(button0), gpios),NRF_GPIO_PIN_SENSE_LOW);

    const struct pm_state_info si = {PM_STATE_SOFT_OFF, 0, 0};

    pm_state_force(0, &si);//1.9.99+

    k_msleep(100);

}

  

Best regards

[Sigurd]

yoyou said:

1.is there a function for know has paired? 

If you want to know if a pairing procedure was completed, you can register authentication information callbacks

Snippet:

static void pairing_complete(struct bt_conn *conn, bool bonded)
{
LOG_INF("Pairing completed: %s, bonded: %d", log_addr(conn), bonded);
}

static void pairing_failed(struct bt_conn *conn, enum bt_security_err reason)
{
LOG_INF("Pairing failed conn: %s, reason %d %s", log_addr(conn), reason,
bt_security_err_to_str(reason));
}





static struct bt_conn_auth_info_cb conn_auth_info_callbacks = {
.pairing_complete = pairing_complete,
.pairing_failed = pairing_failed
};





err = bt_conn_auth_info_cb_register(&conn_auth_info_callbacks);
if (err) {
printk("Failed to register authorization info callbacks.\n");

yoyou said:

2.nrf52820 system off take 36uA, how to reduce power consumption? see SCH as follow:

This seems like a new unrelated question. Please open a new case for the power consumption question.