Good Morning,
I started with example ble_app_hids_keyboard for nrf52840 with nRF5_SDK_17.1.0 and I added uart_init() function to use UARTE0 and I modified uart_event_handle() for received a message "UART_OK" when I received on the rx pin an character, this works quite. My issue I want to connect 2 smartphones with HID Keyboard.
When I connect me to smarphone 1 the example HID keyboard is OK. But when I disconnect to smartphone "1" and I want to connect to smartphone "2" the nrf52840 is not discoveable and I can't to connect to smartphone "2". The nrf52840 indicates BSP_INDICATE_ADVERTISING_WHITELIST (LED 1 is blinking fast for period 1 sec). For our product in development with nrf52840 I can to use only UART signals RX(pin 8) / TX (pin 6), I don't have signals buttons 1 and buttons 2 as example:
During advertising or scanning:
- Button 1: Sleep (if not also in a connection)
- Button 2 long push: Turn off whitelist.
During sleep:
- Button 1: Wake up.
- Button 2: Wake up and delete bond information.
During connection:
- Button 1 long push: Disconnect.
- Push and release on all buttons: Application-specific.
the only solution found is after disconnecting from the phone 1 I must during advertising "LED 1 is blinking fast for period 1 sec" push Button 1 for sleep and during sleep push Button 2 for delete bond information ! I would like to know to make to connect 2 smartphones or other host peripheral (tablet, computer..) witthout clear bond information ?
Can we have a list of multiple hosts in nrf52840 and each host can to connect to nrf52840 ?
To make simple smartphone "1" connected HID Keyboard and I disconnect me and I connect me to the next smartphone in HID Keyboard.
Thank you help
Alexandre
/**@brief Function for handling app_uart events.
*
* @details This function will receive a single character from the app_uart module and append it to
* a string.
*/
/**@snippet [Handling the data received over UART] */
void uart_event_handle(app_uart_evt_t * p_event) //$at_06_04_22
{
uint8_t message[UARTE_MAX_DATA_LEN] = "UART OK";
uint8_t i;
static uint8_t data_array[UARTE_MAX_DATA_LEN];
static uint8_t index = 0;
uint32_t err_code;
switch (p_event->evt_type)
{
case APP_UART_DATA_READY:
UNUSED_VARIABLE(app_uart_get(&data_array[index]));
for (i = 0; i < strlen((const char*)message); i++)
{
app_uart_put(message[i]);
}
break;
case APP_UART_COMMUNICATION_ERROR:
APP_ERROR_HANDLER(p_event->data.error_communication);
break;
case APP_UART_FIFO_ERROR:
APP_ERROR_HANDLER(p_event->data.error_code);
break;
default:
break;
}
}
/**@snippet [Handling the data received over UART] */
/**@brief Function for initializing the UART module.
*/
/**@snippet [UART Initialization] */
static void uart_init(void)
{
uint32_t err_code;
app_uart_comm_params_t const comm_params =
{
.rx_pin_no = RX_PIN_NUMBER,
.tx_pin_no = TX_PIN_NUMBER,
.rts_pin_no = RTS_PIN_NUMBER,
.cts_pin_no = CTS_PIN_NUMBER,
.flow_control = APP_UART_FLOW_CONTROL_DISABLED,
.use_parity = false,
#if defined (UART_PRESENT)
.baud_rate = NRF_UART_BAUDRATE_115200
#else
.baud_rate = NRF_UARTE_BAUDRATE_115200
#endif
};
APP_UART_FIFO_INIT(&comm_params,
UART_RX_BUF_SIZE,
UART_TX_BUF_SIZE,
uart_event_handle,
APP_IRQ_PRIORITY_LOWEST,
err_code);
APP_ERROR_CHECK(err_code);
}
/**@snippet [UART Initialization] */
/**@brief Function for application main entry.
*/
int main(void)
{
bool erase_bonds;
// Initialize.
uart_init();
log_init();
timers_init();
buttons_leds_init(&erase_bonds);
power_management_init();
ble_stack_init();
scheduler_init();
gap_params_init();
gatt_init();
advertising_init();
services_init();
sensor_simulator_init();
conn_params_init();
buffer_init();
peer_manager_init();
// Start execution.
NRF_LOG_INFO("HID Keyboard example started.");
timers_start();
advertising_start(erase_bonds);
// Enter main loop.
for (;;)
{
idle_state_handle();
}
}
