I am working on adding a timer in the ble_app_uart sample, aiming on disconnect with device which doesn't send any data in specific time, such as 5 seconds.
Now I have found an example "timer_pca10028", and try to insert useful part into my application. here is my mofified main function:
int main(void)
{
uint32_t err_code;
bool erase_bonds;
uint8_t start_string[] = START_STRING;
// Initialize.
APP_TIMER_INIT(APP_TIMER_PRESCALER, APP_TIMER_MAX_TIMERS, APP_TIMER_OP_QUEUE_SIZE, false);
uart_init();
buttons_leds_init(&erase_bonds);
ble_stack_init();
gap_params_init();
services_init();
advertising_init();
conn_params_init();
printf("%s",start_string);
err_code = nrf_drv_timer_init(&TIMER_LED, NULL, timer_data_receive_event_handler);
//APP_ERROR_CHECK(err_code);
uint32_t time_ticks;
time_ticks = nrf_drv_timer_ms_to_ticks(&TIMER_LED, DATA_RECEIVE_TIMEOUT);
nrf_drv_timer_extended_compare(
&TIMER_LED, NRF_TIMER_CC_CHANNEL0, DATA_RECEIVE_TIMEOUT, NRF_TIMER_SHORT_COMPARE0_CLEAR_MASK, true);
err_code = ble_advertising_start(BLE_ADV_MODE_FAST);
APP_ERROR_CHECK(err_code);
// Enter main loop.
for (;;)
{
power_manage();
}
}
timer_data_receive_event_handler is my timer event handler, when I find the time is out and it doesn't get any message, 51822 terminates connection, :
void timer_data_receive_event_handler(nrf_timer_event_t event_type, void* p_context)
{
switch(event_type)
{
uint32_t err_code;
case NRF_TIMER_EVENT_COMPARE0:
if (!is_received_data){
err_code = sd_ble_gap_disconnect(m_conn_handle, BLE_HCI_CONN_INTERVAL_UNACCEPTABLE);
APP_ERROR_CHECK(err_code);
nrf_drv_timer_disable(&TIMER_LED);
}
break;
default:
//Do nothing.
break;
}
}
is_received_data is used for marking if I have received the data in nus_data_handler()
when the connection is established, I will start a timer like that:
static void on_ble_evt(ble_evt_t * p_ble_evt)
{
uint32_t err_code;
switch (p_ble_evt->header.evt_id)
{
case BLE_GAP_EVT_CONNECTED:
err_code = bsp_indication_set(BSP_INDICATE_CONNECTED);
APP_ERROR_CHECK(err_code);
m_conn_handle = p_ble_evt->evt.gap_evt.conn_handle;
printf("%s","Device Connected:");
nrf_drv_timer_enable(&TIMER_LED);
break;
...
...
Now I have two problem:
- Does the sample "timer_pca10028" match my purpose? Can I set a timer imitating the sample code?
- nrf_drv_timer_enable(&TIMER_LED) in on_ble_evt cause the disconnection with mobile phone. If I remove this line, my application works as a normal ble_app_uart application at least. However when I enable it, the nrf UART app connects to the 51822 and disconnect automatically at the same time. But the LED on the dongle shows it is in a connected mode.
Could anyone help me? Thanks in advance!
The device is advertising and no hangs.
I used S130 available in SDK9.0 on pca_100028.
Check if you have not changed anything in app_uart, or better, try your code on fresh SDK9.0