I'm merging nRF5_SDK_17.0.2_d674dde\examples\ble_peripheral\ble_app_blinky\pca10040\s132\ses to nRF5_SDK_17.0.2_d674dde\examples\ble_peripheral\ble_app_uart\pca10040\s132\ses, but getting error. Also, I want to merge nRF5_SDK_17.0.2_d674dde\examples\ble_central\ble_app_blinky_c\pca10056\s140\ses to nRF5_SDK_17.0.2_d674dde\examples\ble_central\ble_app_uart_c\pca10056\s140\ses. Can anybody help me? or If their already merged then it will be benefit.
Please find below error screenshot,
Hi,
I don't think we have any ready examples that merges ble_app_blinky and ble_app_uart.
If you can upload your project here, then I will take a look at what's missing.
Hi,
Waiting for reply.
Regards,
Megha Choudhari
Hi,
1. Peripheral & Central side, build & test again. Both works fine. Means while pressing button1 from Peripheral, LED 3 from Central blinks.
2. After that added data send from Peripheral logic in main.c,
/**@brief Function for handling events from the button handler module.
*
* @param[in] pin_no The pin that the event applies to.
* @param[in] button_action The button action (press/release).
*/
static void button_event_handler(uint8_t pin_no, uint8_t button_action)
{
ret_code_t err_code;
switch (pin_no)
{
case LEDBUTTON_BUTTON:
NRF_LOG_INFO("Send button0 state change.");
err_code = ble_lbs_on_button_change(m_conn_handle, &m_lbs, button_action);
if (err_code != NRF_SUCCESS &&
err_code != BLE_ERROR_INVALID_CONN_HANDLE &&
err_code != NRF_ERROR_INVALID_STATE &&
err_code != BLE_ERROR_GATTS_SYS_ATTR_MISSING)
{
APP_ERROR_CHECK(err_code);
}
if (m_conn_handle != BLE_CONN_HANDLE_INVALID)
{
err_code = ble_nus_data_send(&m_nus, "BT0PRES\r\n",9, m_conn_handle);
}
break;
default:
APP_ERROR_HANDLER(pin_no);
break;
}
}
3. Build & test again. Able to get data also on Central while pressing Button1 from Peripheral.
4. Now to add second button done below changes in main.c,
Peripheral:
#define LEDBUTTON_BUTTON1 BSP_BUTTON_1
/**@brief Function for initializing the button handler module.
*/
static void buttons_init(void)
{
ret_code_t err_code;
//The array must be static because a pointer to it will be saved in the button handler module.
static app_button_cfg_t buttons[] =
{
{LEDBUTTON_BUTTON, false, BUTTON_PULL, button_event_handler},
{LEDBUTTON_BUTTON1, false, BUTTON_PULL, button_event_handler}
};
err_code = app_button_init(buttons, ARRAY_SIZE(buttons),
BUTTON_DETECTION_DELAY);
APP_ERROR_CHECK(err_code);
}
/**@brief Function for handling events from the button handler module.
*
* @param[in] pin_no The pin that the event applies to.
* @param[in] button_action The button action (press/release).
*/
static void button_event_handler(uint8_t pin_no, uint8_t button_action)
{
ret_code_t err_code;
switch (pin_no)
{
case LEDBUTTON_BUTTON:
NRF_LOG_INFO("Send button0 state change.");
err_code = ble_lbs_on_button_change(m_conn_handle, &m_lbs, button_action);
if (err_code != NRF_SUCCESS &&
err_code != BLE_ERROR_INVALID_CONN_HANDLE &&
err_code != NRF_ERROR_INVALID_STATE &&
err_code != BLE_ERROR_GATTS_SYS_ATTR_MISSING)
{
APP_ERROR_CHECK(err_code);
}
if (m_conn_handle != BLE_CONN_HANDLE_INVALID)
{
err_code = ble_nus_data_send(&m_nus, "BT0PRES\r\n",9, m_conn_handle);
}
break;
case LEDBUTTON_BUTTON1:
NRF_LOG_INFO("Send button1 state change.");
err_code = ble_lbs_on_button_change(m_conn_handle, &m_lbs, button_action);
if (err_code != NRF_SUCCESS &&
err_code != BLE_ERROR_INVALID_CONN_HANDLE &&
err_code != NRF_ERROR_INVALID_STATE &&
err_code != BLE_ERROR_GATTS_SYS_ATTR_MISSING)
{
APP_ERROR_CHECK(err_code);
}
if (m_conn_handle != BLE_CONN_HANDLE_INVALID)
{
err_code = ble_nus_data_send(&m_nus, "BT1PRES\r\n",9, m_conn_handle);
}
break;
default:
APP_ERROR_HANDLER(pin_no);
break;
}
}
Central:
#define LEDBUTTON_LED1 BSP_BOARD_LED_3
/**@brief Handles events coming from the LED Button central module.
*/
static void lbs_c_evt_handler(ble_lbs_c_t * p_lbs_c, ble_lbs_c_evt_t * p_lbs_c_evt)
{
switch (p_lbs_c_evt->evt_type)
{
case BLE_LBS_C_EVT_DISCOVERY_COMPLETE:
{
ret_code_t err_code;
err_code = ble_lbs_c_handles_assign(&m_ble_lbs_c,
p_lbs_c_evt->conn_handle,
&p_lbs_c_evt->params.peer_db);
NRF_LOG_INFO("LED Button service discovered on conn_handle 0x%x.", p_lbs_c_evt->conn_handle);
err_code = app_button_enable();
APP_ERROR_CHECK(err_code);
// LED Button service discovered. Enable notification of Button.
err_code = ble_lbs_c_button_notif_enable(p_lbs_c);
APP_ERROR_CHECK(err_code);
} break; // BLE_LBS_C_EVT_DISCOVERY_COMPLETE
case BLE_LBS_C_EVT_BUTTON_NOTIFICATION:
{
NRF_LOG_INFO("Button state changed on peer to 0x%x.", p_lbs_c_evt->params.button.button_state);
if (p_lbs_c_evt->params.button.button_state)
{
bsp_board_led_on(LEDBUTTON_LED);
}
else
{
bsp_board_led_off(LEDBUTTON_LED);
}
} break; // BLE_LBS_C_EVT_BUTTON_NOTIFICATION
case BLE_LBS_C_EVT_BUTTON1_NOTIFICATION:
{
NRF_LOG_INFO("Button state changed on peer to 0x%x.", p_lbs_c_evt->params.button.button_state);
if (p_lbs_c_evt->params.button.button_state)
{
bsp_board_led_on(LEDBUTTON_LED1);
}
else
{
bsp_board_led_off(LEDBUTTON_LED1);
}
} break; // BLE_LBS_C_EVT_BUTTON_NOTIFICATION
default:
// No implementation needed.
break;
}
}
5. Build & test again, observe that even though pressing second button from Peripheral & LED3 blinks from Central. Beside this LED4 from Central should glow.
For this debug into code, found that
Central:
ble_lbs_c.c
static void on_hvx(ble_lbs_c_t * p_ble_lbs_c, ble_evt_t const * p_ble_evt)
{
// Check if the event is on the link for this instance.
if (p_ble_lbs_c->conn_handle != p_ble_evt->evt.gattc_evt.conn_handle)
{
return;
}
// Check if this is a Button notification.
if (p_ble_evt->evt.gattc_evt.params.hvx.handle == p_ble_lbs_c->peer_lbs_db.button_handle)
{
if (p_ble_evt->evt.gattc_evt.params.hvx.len == 1)
{
ble_lbs_c_evt_t ble_lbs_c_evt;
ble_lbs_c_evt.evt_type = BLE_LBS_C_EVT_BUTTON_NOTIFICATION;
ble_lbs_c_evt.conn_handle = p_ble_lbs_c->conn_handle;
ble_lbs_c_evt.params.button.button_state = p_ble_evt->evt.gattc_evt.params.hvx.data[0];
p_ble_lbs_c->evt_handler(p_ble_lbs_c, &ble_lbs_c_evt);
}
}
}
In this function BLE_LBS_C_EVT_BUTTON_NOTIFICATION is assigned. So that it always executes only this case.
How to add second here i.e. BLE_LBS_C_EVT_BUTTON1_NOTIFICATION, so that both Button functionality work on individual buttons.
Used SDK 17.0.2
Peripheral :
nRF5_SDK_17.0.2_d674dde\examples\ble_peripheral
Central :
nRF5_SDK_17.0.2_d674dde\examples\ble_central
Almost is it done, kindly help here.
Looking for your reply.
Regards,
Megha Choudhari
Hi,
When can I expect reply?
Regards,
Megha Choudhari
Hi,
Kindly reply to last query.
Regards,
Megha Chodhari
Hi,
The LBS does by default only support 1 LED/button, if you are using a lot of LEDs/Buttons, then the LBS service/characteristic implementation needs some modifications. But if you only have a few LEDs/buttons, then this approach shown in this post here might be the easiest to use:
Hi,
The LBS does by default only support 1 LED/button, if you are using a lot of LEDs/Buttons, then the LBS service/characteristic implementation needs some modifications. But if you only have a few LEDs/buttons, then this approach shown in this post here might be the easiest to use:
Hi,
Thanks a lot for correct suggestion.
Regards,
Megha Choudhari
