RE: Send large data (>20bytes) over BLE using Zephyr and NRF Connect SDK

Kenneth — Wed, 09 Jun 2021 11:38:16 GMT

I suggest to check out:
https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/nrf/samples/bluetooth/throughput/README.html

There are kconfig options in prj.conf you should set. Searching for the various kconfig options you find there should give some results here in devzone already.

Kenneth

RE: Send large data (>20bytes) over BLE using Zephyr and NRF Connect SDK

nik_mitros — Tue, 08 Jun 2021 23:23:12 GMT

void ble_write_thread(void)
{
	/* Don't go any further until BLE is initialized */
	k_sem_take(&ble_init_ok, K_FOREVER);
        uint8_t arr[128];
        for(int i=0; i<128;i++) {
          arr[i]=i;
          }
        uint16_t len = 128;

	for (;;) {
		/* Wait indefinitely for data to be sent over bluetooth */
		//struct uart_data_t *buf = k_fifo_get(&fifo_uart_rx_data,
			//			     K_FOREVER);

		if (bt_nus_send(NULL, arr, len)) {
			LOG_WRN("Failed to send data over BLE connection");
		}

               /// int error = bt_gatt_write_without_response(NULL,char_handle,arr,len, false);
		//k_free(buf);
	}
}

K_THREAD_DEFINE(ble_write_thread_id, STACKSIZE, ble_write_thread, NULL, NULL,
		NULL, PRIORITY, 0, 0);