nrf52 BLE UART example having many errors like "struct "<unnamed>" has no field "A0" "

[Ankush]

Hi

I am working on nrf52 using BMD300 RIGADO board.I am trying to run BLE UART example of nrf SDK 11.0.0.But while I am running the code I am getting errors as

: struct "" has no field "A0"

: struct "" has no field "TEMP"

and so on total 34 errors.

Please help me to resolve this issue.

[Ankush]

/* Copyright (c) 2014 Nordic Semiconductor. All Rights Reserved. * * The information contained herein is property of Nordic Semiconductor ASA. * Terms and conditions of usage are described in detail in NORDIC * SEMICONDUCTOR STANDARD SOFTWARE LICENSE AGREEMENT. * * Licensees are granted free, non-transferable use of the information. NO * WARRANTY of ANY KIND is provided. This heading must NOT be removed from * the file. * */

/** @file
 *
 * @defgroup ble_sdk_uart_over_ble_main main.c
 * @{
 * @ingroup  ble_sdk_app_nus_eval
 * @brief    UART over BLE application main file.
 *
 * This file contains the source code for a sample application that uses the Nordic UART service.
 * This application uses the @ref srvlib_conn_params module.
 */

#include <stdint.h>
#include <string.h>
#include "nordic_common.h"
#include "nrf.h"
#include "ble_hci.h"
#include "ble_advdata.h"
#include "ble_advertising.h"
#include "ble_conn_params.h"
#include "softdevice_handler.h"
#include "app_timer.h"
#include "app_button.h"
#include "ble_nus.h"
#include "app_uart.h"
#include "app_util_platform.h"
#include "bsp.h"
#include "bsp_btn_ble.h"

#define IS_SRVC_CHANGED_CHARACT_PRESENT 0                                           /**< Include the service_changed characteristic. If not enabled, the server's database cannot be changed for the lifetime of the device. */

#define CENTRAL_LINK_COUNT              0                                           /**< Number of central links used by the application. When changing this number remember to adjust the RAM settings*/
#define PERIPHERAL_LINK_COUNT           1                                           /**< Number of peripheral links used by the application. When changing this number remember to adjust the RAM settings*/

#define DEVICE_NAME                     "Nordic_UART"                               /**< Name of device. Will be included in the advertising data. */
#define NUS_SERVICE_UUID_TYPE           BLE_UUID_TYPE_VENDOR_BEGIN                  /**< UUID type for the Nordic UART Service (vendor specific). */

#define APP_ADV_INTERVAL                64                                          /**< The advertising interval (in units of 0.625 ms. This value corresponds to 40 ms). */
#define APP_ADV_TIMEOUT_IN_SECONDS      180                                         /**< The advertising timeout (in units of seconds). */

#define APP_TIMER_PRESCALER             0                                           /**< Value of the RTC1 PRESCALER register. */
#define APP_TIMER_OP_QUEUE_SIZE         4                                           /**< Size of timer operation queues. */

#define MIN_CONN_INTERVAL               MSEC_TO_UNITS(20, UNIT_1_25_MS)             /**< Minimum acceptable connection interval (20 ms), Connection interval uses 1.25 ms units. */
#define MAX_CONN_INTERVAL               MSEC_TO_UNITS(75, UNIT_1_25_MS)             /**< Maximum acceptable connection interval (75 ms), Connection interval uses 1.25 ms units. */
#define SLAVE_LATENCY                   0                                           /**< Slave latency. */
#define CONN_SUP_TIMEOUT                MSEC_TO_UNITS(4000, UNIT_10_MS)             /**< Connection supervisory timeout (4 seconds), Supervision Timeout uses 10 ms units. */
#define FIRST_CONN_PARAMS_UPDATE_DELAY  APP_TIMER_TICKS(5000, APP_TIMER_PRESCALER)  /**< Time from initiating event (connect or start of notification) to first time sd_ble_gap_conn_param_update is called (5 seconds). */
#define NEXT_CONN_PARAMS_UPDATE_DELAY   APP_TIMER_TICKS(30000, APP_TIMER_PRESCALER) /**< Time between each call to sd_ble_gap_conn_param_update after the first call (30 seconds). */
#define MAX_CONN_PARAMS_UPDATE_COUNT    3                                           /**< Number of attempts before giving up the connection parameter negotiation. */

#define DEAD_BEEF                       0xDEADBEEF                                  /**< Value used as error code on stack dump, can be used to identify stack location on stack unwind. */

#define UART_TX_BUF_SIZE                256                                         /**< UART TX buffer size. */
#define UART_RX_BUF_SIZE                256                                         /**< UART RX buffer size. */

static ble_nus_t                        m_nus;                                      /**< Structure to identify the Nordic UART Service. */
static uint16_t                         m_conn_handle = BLE_CONN_HANDLE_INVALID;    /**< Handle of the current connection. */

static ble_uuid_t                       m_adv_uuids[] = {{BLE_UUID_NUS_SERVICE, NUS_SERVICE_UUID_TYPE}};  /**< Universally unique service identifier. */


/**@brief Function for assert macro callback.
 *
 * @details This function will be called in case of an assert in the SoftDevice.
 *
 * @warning This handler is an example only and does not fit a final product. You need to analyse 
 *          how your product is supposed to react in case of Assert.
 * @warning On assert from the SoftDevice, the system can only recover on reset.
 *
 * @param[in] line_num    Line number of the failing ASSERT call.
 * @param[in] p_file_name File name of the failing ASSERT call.
 */
void assert_nrf_callback(uint16_t line_num, const uint8_t * p_file_name)
{
		app_error_handler(DEAD_BEEF, line_num, p_file_name);
}


/**@brief Function for the GAP initialization.
 *
 * @details This function will set up all the necessary GAP (Generic Access Profile) parameters of 
 *          the device. It also sets the permissions and appearance.
 */
static void gap_params_init(void)
{
		uint32_t                err_code;
		ble_gap_conn_params_t   gap_conn_params;
		ble_gap_conn_sec_mode_t sec_mode;

		BLE_GAP_CONN_SEC_MODE_SET_OPEN(&sec_mode);
		
		err_code = sd_ble_gap_device_name_set(&sec_mode,
																					(const uint8_t *) DEVICE_NAME,
																					strlen(DEVICE_NAME));
		APP_ERROR_CHECK(err_code);

		memset(&gap_conn_params, 0, sizeof(gap_conn_params));

		gap_conn_params.min_conn_interval = MIN_CONN_INTERVAL;
		gap_conn_params.max_conn_interval = MAX_CONN_INTERVAL;
		gap_conn_params.slave_latency     = SLAVE_LATENCY;
		gap_conn_params.conn_sup_timeout  = CONN_SUP_TIMEOUT;

		err_code = sd_ble_gap_ppcp_set(&gap_conn_params);
		APP_ERROR_CHECK(err_code);
}


/**@brief Function for handling the data from the Nordic UART Service.
 *
 * @details This function will process the data received from the Nordic UART BLE Service and send
 *          it to the UART module.
 *
 * @param[in] p_nus    Nordic UART Service structure.
 * @param[in] p_data   Data to be send to UART module.
 * @param[in] length   Length of the data.
 */
/**@snippet [Handling the data received over BLE] */
static void nus_data_handler(ble_nus_t * p_nus, uint8_t * p_data, uint16_t length)
{
		for (uint32_t i = 0; i < length; i++)
		{
				while(app_uart_put(p_data[i]) != NRF_SUCCESS);
		}
		while(app_uart_put('\n') != NRF_SUCCESS);
}
/**@snippet [Handling the data received over BLE] */


/**@brief Function for initializing services that will be used by the application.
 */
static void services_init(void)
{
		uint32_t       err_code;
		ble_nus_init_t nus_init;
		
		memset(&nus_init, 0, sizeof(nus_init));

		nus_init.data_handler = nus_data_handler;
		
		err_code = ble_nus_init(&m_nus, &nus_init);
		APP_ERROR_CHECK(err_code);
}


/**@brief Function for handling an event from the Connection Parameters Module.
 *
 * @details This function will be called for all events in the Connection Parameters Module
 *          which are passed to the application.
 *
 * @note All this function does is to disconnect. This could have been done by simply setting
 *       the disconnect_on_fail config parameter, but instead we use the event handler
 *       mechanism to demonstrate its use.
 *
 * @param[in] p_evt  Event received from the Connection Parameters Module.
 */
static void on_conn_params_evt(ble_conn_params_evt_t * p_evt)
{
		uint32_t err_code;
		
		if(p_evt->evt_type == BLE_CONN_PARAMS_EVT_FAILED)
		{
				err_code = sd_ble_gap_disconnect(m_conn_handle, BLE_HCI_CONN_INTERVAL_UNACCEPTABLE);
				APP_ERROR_CHECK(err_code);
		}
}


/**@brief Function for handling errors from the Connection Parameters module.
 *
 * @param[in] nrf_error  Error code containing information about what went wrong.
 */
static void conn_params_error_handler(uint32_t nrf_error)
{
		APP_ERROR_HANDLER(nrf_error);
}


/**@brief Function for initializing the Connection Parameters module.
 */
static void conn_params_init(void)
{
		uint32_t               err_code;
		ble_conn_params_init_t cp_init;
		
		memset(&cp_init, 0, sizeof(cp_init));

		cp_init.p_conn_params                  = NULL;
		cp_init.first_conn_params_update_delay = FIRST_CONN_PARAMS_UPDATE_DELAY;
		cp_init.next_conn_params_update_delay  = NEXT_CONN_PARAMS_UPDATE_DELAY;
		cp_init.max_conn_params_update_count   = MAX_CONN_PARAMS_UPDATE_COUNT;
		cp_init.start_on_notify_cccd_handle    = BLE_GATT_HANDLE_INVALID;
		cp_init.disconnect_on_fail             = false;
		cp_init.evt_handler                    = on_conn_params_evt;
		cp_init.error_handler                  = conn_params_error_handler;
		
		err_code = ble_conn_params_init(&cp_init);
		APP_ERROR_CHECK(err_code);
}


/**@brief Function for putting the chip into sleep mode.
 *
 * @note This function will not return.
 */
static void sleep_mode_enter(void)
{
		uint32_t err_code = bsp_indication_set(BSP_INDICATE_IDLE);
		APP_ERROR_CHECK(err_code);

		// Prepare wakeup buttons.
		err_code = bsp_btn_ble_sleep_mode_prepare();
		APP_ERROR_CHECK(err_code);

		// Go to system-off mode (this function will not return; wakeup will cause a reset).
		err_code = sd_power_system_off();
		APP_ERROR_CHECK(err_code);
}


/**@brief Function for handling advertising events.
 *
 * @details This function will be called for advertising events which are passed to the application.
 *
 * @param[in] ble_adv_evt  Advertising event.
 */
static void on_adv_evt(ble_adv_evt_t ble_adv_evt)
{
		uint32_t err_code;

		switch (ble_adv_evt)
		{
				case BLE_ADV_EVT_FAST:
						err_code = bsp_indication_set(BSP_INDICATE_ADVERTISING);
						APP_ERROR_CHECK(err_code);
						break;
				case BLE_ADV_EVT_IDLE:
						sleep_mode_enter();
						break;
				default:
						break;
		}
}


/**@brief Function for the application's SoftDevice event handler.
 *
 * @param[in] p_ble_evt SoftDevice event.
 */
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;
						break;
						
				case BLE_GAP_EVT_DISCONNECTED:
						err_code = bsp_indication_set(BSP_INDICATE_IDLE);
						APP_ERROR_CHECK(err_code);
						m_conn_handle = BLE_CONN_HANDLE_INVALID;
						break;

				case BLE_GAP_EVT_SEC_PARAMS_REQUEST:
						// Pairing not supported
						err_code = sd_ble_gap_sec_params_reply(m_conn_handle, BLE_GAP_SEC_STATUS_PAIRING_NOT_SUPP, NULL, NULL);
						APP_ERROR_CHECK(err_code);
						break;

				case BLE_GATTS_EVT_SYS_ATTR_MISSING:
						// No system attributes have been stored.
						err_code = sd_ble_gatts_sys_attr_set(m_conn_handle, NULL, 0, 0);
						APP_ERROR_CHECK(err_code);
						break;

				default:
						// No implementation needed.
						break;
		}
}


/**@brief Function for dispatching a SoftDevice event to all modules with a SoftDevice 
 *        event handler.
 *
 * @details This function is called from the SoftDevice event interrupt handler after a 
 *          SoftDevice event has been received.
 *
 * @param[in] p_ble_evt  SoftDevice event.
 */
static void ble_evt_dispatch(ble_evt_t * p_ble_evt)
{
		ble_conn_params_on_ble_evt(p_ble_evt);
		ble_nus_on_ble_evt(&m_nus, p_ble_evt);
		on_ble_evt(p_ble_evt);
		ble_advertising_on_ble_evt(p_ble_evt);
		bsp_btn_ble_on_ble_evt(p_ble_evt);
		
}


/**@brief Function for the SoftDevice initialization.
 *
 * @details This function initializes the SoftDevice and the BLE event interrupt.
 */
static void ble_stack_init(void)
{
		uint32_t err_code;
		
		nrf_clock_lf_cfg_t clock_lf_cfg = NRF_CLOCK_LFCLKSRC;
		
		// Initialize SoftDevice.
		SOFTDEVICE_HANDLER_INIT(&clock_lf_cfg, NULL);
		
		ble_enable_params_t ble_enable_params;
		err_code = softdevice_enable_get_default_config(CENTRAL_LINK_COUNT,
																										PERIPHERAL_LINK_COUNT,
																										&ble_enable_params);
		APP_ERROR_CHECK(err_code);
				
		//Check the ram settings against the used number of links
		CHECK_RAM_START_ADDR(CENTRAL_LINK_COUNT,PERIPHERAL_LINK_COUNT);
		// Enable BLE stack.
		err_code = softdevice_enable(&ble_enable_params);
		APP_ERROR_CHECK(err_code);
		
		// Subscribe for BLE events.
		err_code = softdevice_ble_evt_handler_set(ble_evt_dispatch);
		APP_ERROR_CHECK(err_code);
}


/**@brief Function for handling events from the BSP module.
 *
 * @param[in]   event   Event generated by button press.
 */
void bsp_event_handler(bsp_event_t event)
{
		uint32_t err_code;
		switch (event)
		{
				case BSP_EVENT_SLEEP:
						sleep_mode_enter();
						break;

				case BSP_EVENT_DISCONNECT:
						err_code = sd_ble_gap_disconnect(m_conn_handle, BLE_HCI_REMOTE_USER_TERMINATED_CONNECTION);
						if (err_code != NRF_ERROR_INVALID_STATE)
						{
								APP_ERROR_CHECK(err_code);
						}
						break;

				case BSP_EVENT_WHITELIST_OFF:
						err_code = ble_advertising_restart_without_whitelist();
						if (err_code != NRF_ERROR_INVALID_STATE)
						{
								APP_ERROR_CHECK(err_code);
						}
						break;

				default:
						break;
		}
}


/**@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. The string will be be sent over BLE when the last character received was a 
 *          'new line' i.e '\n' (hex 0x0D) or if the string has reached a length of 
 *          @ref NUS_MAX_DATA_LENGTH.
 */
/**@snippet [Handling the data received over UART] */
void uart_event_handle(app_uart_evt_t * p_event)
{
		static uint8_t data_array[BLE_NUS_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]));
						index++;

						if ((data_array[index - 1] == '\n') || (index >= (BLE_NUS_MAX_DATA_LEN)))
						{
								err_code = ble_nus_string_send(&m_nus, data_array, index);
								if (err_code != NRF_ERROR_INVALID_STATE)
								{
										APP_ERROR_CHECK(err_code);
								}
								
								index = 0;
						}
						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;
		const app_uart_comm_params_t comm_params =
		{
				RX_PIN_NUMBER,
				TX_PIN_NUMBER,
				RTS_PIN_NUMBER,
				CTS_PIN_NUMBER,
				APP_UART_FLOW_CONTROL_ENABLED,
				false,
				UART_BAUDRATE_BAUDRATE_Baud115200
		};

		APP_UART_FIFO_INIT( &comm_params,
											 UART_RX_BUF_SIZE,
											 UART_TX_BUF_SIZE,
											 uart_event_handle,
											 APP_IRQ_PRIORITY_LOW,
											 err_code);
		APP_ERROR_CHECK(err_code);
}
/**@snippet [UART Initialization] */


/**@brief Function for initializing the Advertising functionality.
 */
static void advertising_init(void)
{
		uint32_t      err_code;
		ble_advdata_t advdata;
		ble_advdata_t scanrsp;

		// Build advertising data struct to pass into @ref ble_advertising_init.
		memset(&advdata, 0, sizeof(advdata));
		advdata.name_type          = BLE_ADVDATA_FULL_NAME;
		advdata.include_appearance = false;
		advdata.flags              = BLE_GAP_ADV_FLAGS_LE_ONLY_LIMITED_DISC_MODE;

		memset(&scanrsp, 0, sizeof(scanrsp));
		scanrsp.uuids_complete.uuid_cnt = sizeof(m_adv_uuids) / sizeof(m_adv_uuids[0]);
		scanrsp.uuids_complete.p_uuids  = m_adv_uuids;

		ble_adv_modes_config_t options = {0};
		options.ble_adv_fast_enabled  = BLE_ADV_FAST_ENABLED;
		options.ble_adv_fast_interval = APP_ADV_INTERVAL;
		options.ble_adv_fast_timeout  = APP_ADV_TIMEOUT_IN_SECONDS;

		err_code = ble_advertising_init(&advdata, &scanrsp, &options, on_adv_evt, NULL);
		APP_ERROR_CHECK(err_code);
}


/**@brief Function for initializing buttons and leds.
 *
 * @param[out] p_erase_bonds  Will be true if the clear bonding button was pressed to wake the application up.
 */
static void buttons_leds_init(bool * p_erase_bonds)
{
		bsp_event_t startup_event;

		uint32_t err_code = bsp_init(BSP_INIT_LED | BSP_INIT_BUTTONS,
																 APP_TIMER_TICKS(100, APP_TIMER_PRESCALER), 
																 bsp_event_handler);
		APP_ERROR_CHECK(err_code);

		err_code = bsp_btn_ble_init(NULL, &startup_event);
		APP_ERROR_CHECK(err_code);

		*p_erase_bonds = (startup_event == BSP_EVENT_CLEAR_BONDING_DATA);
}


/**@brief Function for placing the application in low power state while waiting for events.
 */
static void power_manage(void)
{
		uint32_t err_code = sd_app_evt_wait();
		APP_ERROR_CHECK(err_code);
}


/**@brief Application main function.
 */
int main(void)
{
		uint32_t err_code;
		bool erase_bonds;

		// Initialize.
		APP_TIMER_INIT(APP_TIMER_PRESCALER, 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("\r\nUART Start!\r\n");
		err_code = ble_advertising_start(BLE_ADV_MODE_FAST);
		APP_ERROR_CHECK(err_code);
		
		// Enter main loop.
		for (;;)
		{
				power_manage();
		}
}


/** 
 * @}
 */