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#![no_std]
#![no_main]
#![feature(type_alias_impl_trait)]
#![feature(alloc_error_handler)]
#![allow(incomplete_features)]
#[path = "../example_common.rs"]
mod example_common;
use core::mem;
use cortex_m_rt::entry;
use defmt::info;
use defmt::*;
use embassy::executor::Executor;
use embassy::util::Forever;
use nrf_softdevice::ble::{gatt_server, peripheral};
use nrf_softdevice::{raw, Softdevice};
static EXECUTOR: Forever<Executor> = Forever::new();
#[embassy::task]
async fn softdevice_task(sd: &'static Softdevice) {
sd.run().await;
}
#[nrf_softdevice::gatt_service(uuid = "180f")]
struct BatteryService {
#[characteristic(uuid = "2a19", read, notify)]
battery_level: u8,
}
#[nrf_softdevice::gatt_service(uuid = "9e7312e0-2354-11eb-9f10-fbc30a62cf38")]
struct FooService {
#[characteristic(
uuid = "9e7312e0-2354-11eb-9f10-fbc30a63cf38",
read,
write,
notify,
indicate
)]
foo: u16,
}
#[nrf_softdevice::gatt_server]
struct Server {
bas: BatteryService,
foo: FooService,
}
#[embassy::task]
async fn bluetooth_task(sd: &'static Softdevice) {
let server: Server = unwrap!(gatt_server::register(sd));
#[rustfmt::skip]
let adv_data = &[
0x02, 0x01, raw::BLE_GAP_ADV_FLAGS_LE_ONLY_GENERAL_DISC_MODE as u8,
0x03, 0x03, 0x09, 0x18,
0x0a, 0x09, b'H', b'e', b'l', b'l', b'o', b'R', b'u', b's', b't',
];
#[rustfmt::skip]
let scan_data = &[
0x03, 0x03, 0x09, 0x18,
];
loop {
let config = peripheral::Config::default();
let adv = peripheral::ConnectableAdvertisement::ScannableUndirected {
adv_data,
scan_data,
};
let conn = unwrap!(peripheral::advertise_connectable(sd, adv, &config).await);
info!("advertising done!");
// Run the GATT server on the connection. This returns when the connection gets disconnected.
let res = gatt_server::run(&conn, &server, |e| match e {
ServerEvent::Bas(e) => match e {
BatteryServiceEvent::BatteryLevelCccdWrite { notifications } => {
info!("battery notifications: {}", notifications)
}
},
ServerEvent::Foo(e) => match e {
FooServiceEvent::FooWrite(val) => {
info!("wrote foo: {}", val);
if let Err(e) = server.foo.foo_notify(&conn, val + 1) {
info!("send notification error: {:?}", e);
}
}
FooServiceEvent::FooCccdWrite {
indications,
notifications,
} => {
info!(
"foo indications: {}, notifications: {}",
indications, notifications
)
}
},
})
.await;
if let Err(e) = res {
info!("gatt_server run exited with error: {:?}", e);
}
}
}
#[entry]
fn main() -> ! {
info!("Hello World!");
let config = nrf_softdevice::Config {
clock: Some(raw::nrf_clock_lf_cfg_t {
source: raw::NRF_CLOCK_LF_SRC_RC as u8,
rc_ctiv: 4,
rc_temp_ctiv: 2,
accuracy: 7,
}),
conn_gap: Some(raw::ble_gap_conn_cfg_t {
conn_count: 6,
event_length: 24,
}),
conn_gatt: Some(raw::ble_gatt_conn_cfg_t { att_mtu: 256 }),
gatts_attr_tab_size: Some(raw::ble_gatts_cfg_attr_tab_size_t {
attr_tab_size: 32768,
}),
gap_role_count: Some(raw::ble_gap_cfg_role_count_t {
adv_set_count: 1,
periph_role_count: 3,
central_role_count: 3,
central_sec_count: 0,
_bitfield_1: raw::ble_gap_cfg_role_count_t::new_bitfield_1(0),
}),
gap_device_name: Some(raw::ble_gap_cfg_device_name_t {
p_value: b"HelloRust" as *const u8 as _,
current_len: 9,
max_len: 9,
write_perm: unsafe { mem::zeroed() },
_bitfield_1: raw::ble_gap_cfg_device_name_t::new_bitfield_1(
raw::BLE_GATTS_VLOC_STACK as u8,
),
}),
..Default::default()
};
let sd = Softdevice::enable(&config);
let executor = EXECUTOR.put(Executor::new());
executor.run(|spawner| {
unwrap!(spawner.spawn(softdevice_task(sd)));
unwrap!(spawner.spawn(bluetooth_task(sd)));
});
}
|
