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NFC does not scan when Soft device is loaded and section placement macros are changed.

Hello,

I'm trying to merge NFC writeable example "writable_ndef_msg" with BLE Beacon "ble_app_beacon". My aim is to start BLE Beacon after the scanning of NFC. I have added all the NFC supporting .c files, header files and added config parameters to "ble_app_beacon" example located in ble_peripheral folder. Im using nRF52832 DK with SDK17.0.2 version and softdevice s132. on ses.

In section placement macros, I have modified the following since there was a overlap.

FLASH_PH_START=0x0

FLASH_PH_SIZE=0x80000

RAM_PH_START=0x20000000

RAM_PH_SIZE=0x20000

FLASH_START=0x26000

FLASH_SIZE=0x80000

RAM_START=0x200022B0

RAM_SIZE=0x10000

I'm able to download the program to the DK. But not able to scan NFC. I have followed the query in this link . But was not able to resolve. (writable_ndef_msg and ble_app_beacon independently works fine)

So, Second thing which I tried was, to modify the section placement macros in writable_ndef_msg program to the same values as above. I was unable to scan the NFC if the RAM and Flash are modified here.

Parents
  • Hi.

    You have checked that your code runs? Apart from not beeing able to scan NFC. You don't get stuck in an error handler or something similar?

    I can forward your ticket to one of our NFC experts, and ask If they have some suggestions. I don't immediately see what the cause of this might be.

    Br,
    Joakim

  • There are no errors while downloading the program. But when I debug, it is getting stuck at one of the commands - ldr r1,[sp, #24] please find the screen shot of debug window and registers. Debug is stopping here and consuming large number of cycles.

    Disassembly window      Registers         

    This is my main.c file.

    /**
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     * All rights reserved.
     *
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     * are permitted provided that the following conditions are met:
     *
     * 1. Redistributions of source code must retain the above copyright notice, this
     *    list of conditions and the following disclaimer.
     *
     * 2. Redistributions in binary form, except as embedded into a Nordic
     *    Semiconductor ASA integrated circuit in a product or a software update for
     *    such product, must reproduce the above copyright notice, this list of
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     *
     * 3. Neither the name of Nordic Semiconductor ASA nor the names of its
     *    contributors may be used to endorse or promote products derived from this
     *    software without specific prior written permission.
     *
     * 4. This software, with or without modification, must only be used with a
     *    Nordic Semiconductor ASA integrated circuit.
     *
     * 5. Any software provided in binary form under this license must not be reverse
     *    engineered, decompiled, modified and/or disassembled.
     *
     * THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS
     * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     * OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE
     * DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE
     * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
     * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
     * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     *
     */
    /** @file
     *
     * @defgroup ble_sdk_app_beacon_main main.c
     * @{
     * @ingroup ble_sdk_app_beacon
     * @brief Beacon Transmitter Sample Application main file.
     *
     * This file contains the source code for an Beacon transmitter sample application.
     */
    
    #include <stdbool.h>
    #include <stdint.h>
    #include "nordic_common.h"
    #include "bsp.h"
    #include "nrf_soc.h"
    #include "nrf_sdh.h"
    #include "nrf_sdh_ble.h"
    #include "ble_advdata.h"
    #include "app_timer.h"
    #include "nrf_pwr_mgmt.h"
    
    #include "nrf_log.h"
    #include "nrf_log_ctrl.h"
    #include "nrf_log_default_backends.h"
    
    //***********************start******************************
    #include "app_error.h"
    #include "app_scheduler.h"
    #include "boards.h"
    #include "nfc_t4t_lib.h"
    #include "nrf_log_ctrl.h"
    #include "ndef_file_m.h"
    #include "nfc_ndef_msg.h"
    #include "nfc_ndef_msg_parser.h"
    #include "nfc_ndef_msg_parser_local.h"
    
    #include "nrf_delay.h"
    #include "nrf_gpio.h"
    
    //***********************end*****************************
    
    
    #define APP_BLE_CONN_CFG_TAG            1                                  /**< A tag identifying the SoftDevice BLE configuration. */
    
    #define NON_CONNECTABLE_ADV_INTERVAL    MSEC_TO_UNITS(100, UNIT_0_625_MS)  /**< The advertising interval for non-connectable advertisement (100 ms). This value can vary between 100ms to 10.24s). */
    
    #define APP_BEACON_INFO_LENGTH          0x17                               /**< Total length of information advertised by the Beacon. */
    #define APP_ADV_DATA_LENGTH             0x15                               /**< Length of manufacturer specific data in the advertisement. */
    #define APP_DEVICE_TYPE                 0x02                               /**< 0x02 refers to Beacon. */
    #define APP_MEASURED_RSSI               0xC3                               /**< The Beacon's measured RSSI at 1 meter distance in dBm. */
    #define APP_COMPANY_IDENTIFIER          0x0059                             /**< Company identifier for Nordic Semiconductor ASA. as per www.bluetooth.org. */
    #define APP_MAJOR_VALUE                 0x01, 0x02                         /**< Major value used to identify Beacons. */
    #define APP_MINOR_VALUE                 0x03, 0x04                         /**< Minor value used to identify Beacons. */
    #define APP_BEACON_UUID                 0x01, 0x12, 0x23, 0x34, \
                                            0x45, 0x56, 0x67, 0x78, \
                                            0x89, 0x9a, 0xab, 0xbc, \
                                            0xcd, 0xde, 0xef, 0xf0            /**< Proprietary UUID for Beacon. */
    
    #define DEAD_BEEF                       0xDEADBEEF                         /**< Value used as error code on stack dump, can be used to identify stack location on stack unwind. */
    
    #if defined(USE_UICR_FOR_MAJ_MIN_VALUES)
    #define MAJ_VAL_OFFSET_IN_BEACON_INFO   18                                 /**< Position of the MSB of the Major Value in m_beacon_info array. */
    #define UICR_ADDRESS                    0x10001080                         /**< Address of the UICR register used by this example. The major and minor versions to be encoded into the advertising data will be picked up from this location. */
    #endif
    
    //******************************start******************************
    #define APP_SCHED_MAX_EVENT_SIZE 0                  /**< Maximum size of scheduler events. */
    #define APP_SCHED_QUEUE_SIZE     4                  /**< Maximum number of events in the scheduler queue. */
    #define APP_DEFAULT_BTN          BSP_BOARD_BUTTON_0 /**< Button used to set default NDEF message. */
    
    //*******************************end*****************************
    
    
    static ble_gap_adv_params_t m_adv_params;                                  /**< Parameters to be passed to the stack when starting advertising. */
    static uint8_t              m_adv_handle = BLE_GAP_ADV_SET_HANDLE_NOT_SET; /**< Advertising handle used to identify an advertising set. */
    static uint8_t              m_enc_advdata[BLE_GAP_ADV_SET_DATA_SIZE_MAX];  /**< Buffer for storing an encoded advertising set. */
    
    
    //*******************************start******************************
    static uint8_t m_ndef_msg_buf[NDEF_FILE_SIZE];      /**< Buffer for NDEF file. */
    static uint8_t m_ndef_msg_len;                      /**< Length of the NDEF message. */
    
    //**********************************end****************************
    
    
    
    ///**@brief Struct that contains pointers to the encoded advertising data. */
    static ble_gap_adv_data_t m_adv_data =
    {
        .adv_data =
        {
            .p_data = m_enc_advdata,
            .len    = BLE_GAP_ADV_SET_DATA_SIZE_MAX
        },
        .scan_rsp_data =
        {
            .p_data = NULL,
            .len    = 0
    
        }
    };
    
    
    static uint8_t m_beacon_info[APP_BEACON_INFO_LENGTH] =                    /**< Information advertised by the Beacon. */
    {
        APP_DEVICE_TYPE,     // Manufacturer specific information. Specifies the device type in this
                             // implementation.
        APP_ADV_DATA_LENGTH, // Manufacturer specific information. Specifies the length of the
                             // manufacturer specific data in this implementation.
        APP_BEACON_UUID,     // 128 bit UUID value.
        APP_MAJOR_VALUE,     // Major arbitrary value that can be used to distinguish between Beacons.
        APP_MINOR_VALUE,     // Minor arbitrary value that can be used to distinguish between Beacons.
        APP_MEASURED_RSSI    // Manufacturer specific information. The Beacon's measured TX power in
                             // this implementation.
    };
    
    
    ///**@brief Callback function for asserts in the SoftDevice.
    // *
    // * @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 analyze
    // *          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]   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 initializing the Advertising functionality.
    // *
    // * @details Encodes the required advertising data and passes it to the stack.
    // *          Also builds a structure to be passed to the stack when starting advertising.
    // */
    static void advertising_init(void)
    {
        uint32_t      err_code;
        ble_advdata_t advdata;
        uint8_t       flags = BLE_GAP_ADV_FLAG_BR_EDR_NOT_SUPPORTED;
    
        ble_advdata_manuf_data_t manuf_specific_data;
    
        manuf_specific_data.company_identifier = APP_COMPANY_IDENTIFIER;
    
    #if defined(USE_UICR_FOR_MAJ_MIN_VALUES)
        // If USE_UICR_FOR_MAJ_MIN_VALUES is defined, the major and minor values will be read from the
        // UICR instead of using the default values. The major and minor values obtained from the UICR
        // are encoded into advertising data in big endian order (MSB First).
        // To set the UICR used by this example to a desired value, write to the address 0x10001080
        // using the nrfjprog tool. The command to be used is as follows.
        // nrfjprog --snr <Segger-chip-Serial-Number> --memwr 0x10001080 --val <your major/minor value>
        // For example, for a major value and minor value of 0xabcd and 0x0102 respectively, the
        // the following command should be used.
        // nrfjprog --snr <Segger-chip-Serial-Number> --memwr 0x10001080 --val 0xabcd0102
        uint16_t major_value = ((*(uint32_t *)UICR_ADDRESS) & 0xFFFF0000) >> 16;
        uint16_t minor_value = ((*(uint32_t *)UICR_ADDRESS) & 0x0000FFFF);
    
        uint8_t index = MAJ_VAL_OFFSET_IN_BEACON_INFO;
    
        m_beacon_info[index++] = MSB_16(major_value);
        m_beacon_info[index++] = LSB_16(major_value);
    
        m_beacon_info[index++] = MSB_16(minor_value);
        m_beacon_info[index++] = LSB_16(minor_value);
    #endif
    
        manuf_specific_data.data.p_data = (uint8_t *) m_beacon_info;
        manuf_specific_data.data.size   = APP_BEACON_INFO_LENGTH;
    
        // Build and set advertising data.
        memset(&advdata, 0, sizeof(advdata));
    
        advdata.name_type             = BLE_ADVDATA_NO_NAME;
        advdata.flags                 = flags;
        advdata.p_manuf_specific_data = &manuf_specific_data;
    
        // Initialize advertising parameters (used when starting advertising).
        memset(&m_adv_params, 0, sizeof(m_adv_params));
    
        m_adv_params.properties.type = BLE_GAP_ADV_TYPE_NONCONNECTABLE_NONSCANNABLE_UNDIRECTED;
        m_adv_params.p_peer_addr     = NULL;    // Undirected advertisement.
        m_adv_params.filter_policy   = BLE_GAP_ADV_FP_ANY;
        m_adv_params.interval        = NON_CONNECTABLE_ADV_INTERVAL;
        m_adv_params.duration        = 0;       // Never time out.
    
        err_code = ble_advdata_encode(&advdata, m_adv_data.adv_data.p_data, &m_adv_data.adv_data.len);
        APP_ERROR_CHECK(err_code);
    
        err_code = sd_ble_gap_adv_set_configure(&m_adv_handle, &m_adv_data, &m_adv_params);
        APP_ERROR_CHECK(err_code);
    }
    
    
    /**@brief Function for starting advertising.
     */
    static void advertising_start(void)
    {
        ret_code_t err_code;
    
        err_code = sd_ble_gap_adv_start(m_adv_handle, APP_BLE_CONN_CFG_TAG);
        APP_ERROR_CHECK(err_code);
    
        err_code = bsp_indication_set(BSP_INDICATE_ADVERTISING);
        APP_ERROR_CHECK(err_code);
    }
    
    
    /**@brief Function for initializing the BLE stack.
     *
     * @details Initializes the SoftDevice and the BLE event interrupt.
     */
    static void ble_stack_init(void)
    {
        ret_code_t err_code;
    
        err_code = nrf_sdh_enable_request();
        APP_ERROR_CHECK(err_code);
    
        // Configure the BLE stack using the default settings.
        // Fetch the start address of the application RAM.
        uint32_t ram_start = 0;
        err_code = nrf_sdh_ble_default_cfg_set(APP_BLE_CONN_CFG_TAG, &ram_start);
        APP_ERROR_CHECK(err_code);
    
        // Enable BLE stack.
        err_code = nrf_sdh_ble_enable(&ram_start);
        APP_ERROR_CHECK(err_code);
    }
    
    
    /**@brief Function for initializing logging. */
    static void log_init(void)
    {
        ret_code_t err_code = NRF_LOG_INIT(NULL);
        APP_ERROR_CHECK(err_code);
    
        NRF_LOG_DEFAULT_BACKENDS_INIT();
    }
    
    ///**@brief Function for initializing LEDs. */
    static void leds_init(void)
    {
        ret_code_t err_code = bsp_init(BSP_INIT_LEDS, NULL);
        APP_ERROR_CHECK(err_code);
    }
    
    
    /**@brief Function for initializing timers. */
    static void timers_init(void)
    {
        ret_code_t err_code = app_timer_init();
        APP_ERROR_CHECK(err_code);
    }
    
    
    /**@brief Function for initializing power management.
     */
    static void power_management_init(void)
    {
        ret_code_t err_code;
        err_code = nrf_pwr_mgmt_init();
        APP_ERROR_CHECK(err_code);
    }
    
    
    /**@brief Function for handling the idle state (main loop).
     *
     * @details If there is no pending log operation, then sleep until next the next event occurs.
     */
    static void idle_state_handle(void)
    {
        if (NRF_LOG_PROCESS() == false)
        {
            nrf_pwr_mgmt_run();
        }
    }
    
    
    
    //**************************start********************************
    /**
     * @brief Function for updating NDEF message in the flash file.
     */
    static void scheduler_ndef_file_update(void * p_event_data, uint16_t event_size)
    {
        ret_code_t err_code;
    
        UNUSED_PARAMETER(p_event_data);
        UNUSED_PARAMETER(event_size);
    
        // Update flash file with new NDEF message.
        err_code = ndef_file_update(m_ndef_msg_buf, m_ndef_msg_len + NLEN_FIELD_SIZE);
        APP_ERROR_CHECK(err_code);
    
        NRF_LOG_INFO("NDEF message updated!");
        NRF_LOG_INFO(m_ndef_msg_buf);
    
     //******start Beacon after ndef file update***************
    
        NRF_LOG_INFO("Beacon example started.");
        advertising_start();
    // ***********************************************
        
    }
    
    
    /**
     * @brief Callback function for handling NFC events.
     */
    static void nfc_callback(void          * context,
                             nfc_t4t_event_t event,
                             const uint8_t * data,
                             size_t          dataLength,
                             uint32_t        flags)
    {
        (void)context;
    
        switch (event)
        {
            case NFC_T4T_EVENT_FIELD_ON:
                bsp_board_led_on(BSP_BOARD_LED_0);
                break;
    
            case NFC_T4T_EVENT_FIELD_OFF:
                bsp_board_leds_off();
                break;
    
            case NFC_T4T_EVENT_NDEF_READ:
                bsp_board_led_on(BSP_BOARD_LED_3);
                break;
    
            case NFC_T4T_EVENT_NDEF_UPDATED:
                if (dataLength > 0)
                {
                    ret_code_t err_code;
    
                    bsp_board_led_on(BSP_BOARD_LED_1);
    
                    // Schedule update of NDEF message in the flash file.
                    m_ndef_msg_len = dataLength;
                    err_code       = app_sched_event_put(NULL, 0, scheduler_ndef_file_update);
                    APP_ERROR_CHECK(err_code);
    
              }
                break;
    
            default:
                break;
        }
    }
    
    
    
    //****************************end*********************************
    /**
     * @brief Function for application main entry.
     */
    int main(void)
    {
        // Initialize.
        log_init();
        timers_init();
        leds_init();
        power_management_init();
        ble_stack_init();
        advertising_init();
    
        //***************************
        ret_code_t err_code;
        NRF_LOG_DEBUG("Started!");
         /* Configure LED-pins as outputs */
        bsp_board_init(BSP_INIT_LEDS | BSP_INIT_BUTTONS);
    
        /* Initialize App Scheduler. */
        APP_SCHED_INIT(APP_SCHED_MAX_EVENT_SIZE, APP_SCHED_QUEUE_SIZE);
    
        /* Initialize FDS. */
        err_code = ndef_file_setup();
        APP_ERROR_CHECK(err_code);
    
        /* Load NDEF message from the flash file. */
        err_code = ndef_file_load(m_ndef_msg_buf, sizeof(m_ndef_msg_buf));
        APP_ERROR_CHECK(err_code);
    
        // Restore default NDEF message.
        if (bsp_board_button_state_get(APP_DEFAULT_BTN))
        {
            uint32_t size = sizeof(m_ndef_msg_buf);
            err_code = ndef_file_default_message(m_ndef_msg_buf, &size);
            APP_ERROR_CHECK(err_code);
            err_code = ndef_file_update(m_ndef_msg_buf, NDEF_FILE_SIZE);
            APP_ERROR_CHECK(err_code);
            NRF_LOG_DEBUG("Default NDEF message restored!");
        }
    
        /* Set up NFC */
        err_code = nfc_t4t_setup(nfc_callback, NULL);
        APP_ERROR_CHECK(err_code);
    
        /* Run Read-Write mode for Type 4 Tag platform */
        err_code = nfc_t4t_ndef_rwpayload_set(m_ndef_msg_buf, sizeof(m_ndef_msg_buf));
        APP_ERROR_CHECK(err_code);
    
        NRF_LOG_INFO("Writable NDEF message example started.");
    
        /* Start sensing NFC field */
        err_code = nfc_t4t_emulation_start();
        APP_ERROR_CHECK(err_code);
    
        while (1)
        {
            app_sched_execute();
    
            NRF_LOG_FLUSH();
            __WFE();
        }
        //***************************
    
        // Start execution.
    
        //NRF_LOG_INFO("Beacon example started.");
        //advertising_start();
    
        // Enter main loop.
    
        //for (;; )
        //{
        //    idle_state_handle();
        //}
    }
    
    
    /**
     * @}
     */
    

  • Thank you. 

    I see that you get a PC value. Maybe you can check what specific function that correlates to the PC value?

    Br, 
    Joakim

  • Hi,

    Apologies for late response. I'm trying to change the flash and RAM address of softdevice. I saw the tutorial here. When I debug, there is an error in loading the soft device. Is there anywhere else to make changes for memory ?

    I have downloaded s132 v 7.2.0. What should be the minimum RAM_START and FLASH_START ? 

    I'm new to this. Also Please let know what is FLASH_PH_START and FLASH_START difference ?

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