Some questions about bluetooth

RE: Some questions about bluetooth

Amanda Hsieh — Thu, 11 Jan 2024 22:02:28 GMT

Hi,

The bt_le_set_chan_map() function is used for central devices to set a channel map in a connection. Could you test the code with the central sample under zephyr\samples\bluetooth and connect with the peripheral sample under zephyr\samples\bluetooth? You also could take a look at this post.

-Amanda H.

RE: Some questions about bluetooth

Boss_crab — Thu, 11 Jan 2024 03:31:21 GMT

Hi！Amanda H，

this is read_channel_map（）：

code：

static void read_channel_map(uint16_t handle, struct bt_hci_rp_le_read_chan_map *map_data)

{

struct net_buf *buf, *rsp = NULL;

struct bt_hci_cp_le_read_chan_map *cp;

struct bt_hci_rp_le_read_chan_map *rp;

int err;

buf = bt_hci_cmd_create(BT_HCI_OP_LE_READ_CHAN_MAP, sizeof(*cp));

if (!buf) {

printk("Unable to allocate command buffer\n");

return;

}

cp = net_buf_add(buf, sizeof(*cp));

cp->handle = sys_cpu_to_le16(handle);

err = bt_hci_cmd_send_sync(BT_HCI_OP_LE_READ_CHAN_MAP, buf, &rsp);

rp = (void *)rsp->data;

*map_data = *rp;

net_buf_unref(rsp);

}

I wrote based on the get_tx_power function in the hci_pwr_ctrl project.

RE: Some questions about bluetooth

Amanda Hsieh — Wed, 10 Jan 2024 19:34:22 GMT

Hi,

1. I cannot find the read_channel_map function in NCS. What NCS version are you using? What sample are you using and where is it from?

2. You can refer to the BLE Throughput sample.

3. The periodic_adv sample under zephyr/samples/bluetooth is a good example of BLE extended advertising.

Regards,
Amanda H.