Nimble char descriptor

[jeanbi]

Hello,

I'm using Nimble on esp-idf v4.0-beta1. I followed the example https://github.com/espressif/esp-idf/tr ... le/bleprph to make a peripheral and it's ok but there is not any descriptors in the example.
I tried to implement that with documentation of Mynext Nimble without success.

Do you have an example that is working?

Thank you.

Here is my code :

Code: Select all

static const struct ble_gatt_svc_def gatt_svr_svcs[] = 
{
    {
        /*** Service: Sensor Gateway. */
        .type = BLE_GATT_SVC_TYPE_PRIMARY,
        .uuid = &gatt_svr_svc_sensor_gateway_uuid.u,
        .characteristics = (struct ble_gatt_chr_def[])
        { {
                /*** Characteristic: Gateway ID. */
                .uuid = &gatt_svr_chr_gateway_id_uuid.u,
                .access_cb = gatt_svr_chr_access_gateway_sensor,
                .flags = BLE_GATT_CHR_F_READ | BLE_GATT_CHR_F_WRITE,
                .descriptors = (struct ble_gatt_dsc_def[])
                { {
                        .uuid = &GATT_DESCRIPTOR_UUID.u,
                        .att_flags = BLE_GATT_CHR_F_READ,
                        .access_cb = gatt_srv_descriptor_gateway_sensor,
                        .arg = (void*) "description1",
                    },
                    {
                        0 // No more descriptors
                    },
                }
            }, {
                /*** Characteristic: Script ID. */
                .uuid = &gatt_svr_chr_script_id_uuid.u,
                .access_cb = gatt_svr_chr_access_gateway_sensor,
                .flags = BLE_GATT_CHR_F_READ | BLE_GATT_CHR_F_WRITE,
            }, {
                /*** Characteristic: Server IP. */
                .uuid = &gatt_svr_chr_server_ip_uuid.u,
                .access_cb = gatt_svr_chr_access_gateway_sensor,
                .flags = BLE_GATT_CHR_F_READ | BLE_GATT_CHR_F_WRITE,
            }, {
                /*** Characteristic: ....
....

[br10101]

You need

Code: [Select all] [Expand/Collapse]

1. {
2.   .uuid =BLE_UUID16_DECLARE(0x2901),
3.   .access_cb = gatts_conf_chr_access,
4.   .att_flags = BLE_ATT_F_READ,
5. }

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And in the access_cb you write the description into the mbuf:

Code: [Select all] [Expand/Collapse]

1. os_mbuf_append(ctx->om, "Test", 4);

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