PHY1M is slower than PHY2M while forwarding data.

[TGuanLa]

Hello All,

I have a problem when I build my project from sample central_uart &  peripheral_uart.

I have two nrf5340 called A and B. B scans the broadcast to A to establish a connection. Then my phone(C) connects B.

A sends data to B, and B forwards data to C.

Speed of retransmission  is 160kbps when B works on PHY1M. However, speed drops to 40kbps when B works on PHY2M. 

I wonder what cause this problem.

Is there any ways to increase forwarding data speed？

Thank you.

static uint8_t ble_data_received(struct bt_nus_client *nus,
						const uint8_t *data, uint16_t len)
{
	ARG_UNUSED(nus);
	int err;

	err = bt_nus_send(peripheral_conn, data, len);
		// printk("len:%d\n",len);
		if (err) {
			printk("Send Error(err %d)\n", err);
		}
	
	return BT_GATT_ITER_CONTINUE;
}

B is connected with A as the center and C as the periphery.

[Einar Thorsrud]

You can use different PHYs for separate connections.

[TGuanLa]

Thank you so much!