Custom service + DFU

Question

I've used DFU alongside with HRS and it seems to work fine. 
 This time I'm using a custom service and I'm trying to add a DFU alongside. They just don't seem to play well together. 
 How can a custom service mess up the DFU service? I've been through the usually suspects eg: 
 ble_enable_params.common_enable_params.vs_uuid_count = 2; 
 thanks,

ypearson · Accepted Answer

I just re-started the merge now it works, I was just a lot more methodical this time around (it only took 3 tries). I'm using SDK 12.2, so the bootloader libs need to be updated 
 Here were the steps (see other posts about modifying the bootloader files) 
 modified: sdk/components/ble/ble_services/ble_dfu/ble_dfu.c
modified: sdk/components/libraries/bootloader/ble_dfu/nrf_ble_dfu.c
modified: sdk/components/libraries/bootloader/dfu/nrf_dfu.c
 
 Add missing C files for my particular project: 
 $(SDK_ROOT)/components/libraries/scheduler/app_scheduler.c 
$(SDK_ROOT)/components/libraries/crc32/crc32.c 
$(SDK_ROOT)/components/libraries/fds/fds.c 
$(SDK_ROOT)/components/libraries/util/sdk_mapped_flags.c 
$(PROJ_DIR)/nrf_dfu_flash_buttonless.c 
$(SDK_ROOT)/components/ble/common/ble_conn_state.c 
$(SDK_ROOT)/components/ble/ble_services/ble_dfu/ble_dfu.c 
$(SDK_ROOT)/components/ble/peer_manager/gatt_cache_manager.c 
$(SDK_ROOT)/components/ble/peer_manager/gatts_cache_manager.c 
$(SDK_ROOT)/components/ble/peer_manager/id_manager.c 
$(SDK_ROOT)/components/ble/nrf_ble_gatt/nrf_ble_gatt.c 
$(SDK_ROOT)/components/ble/peer_manager/peer_data.c 
$(SDK_ROOT)/components/ble/peer_manager/peer_data_storage.c 
$(SDK_ROOT)/components/ble/peer_manager/peer_database.c 
$(SDK_ROOT)/components/ble/peer_manager/peer_id.c 
$(SDK_ROOT)/components/ble/peer_manager/peer_manager.c 
$(SDK_ROOT)/components/ble/peer_manager/pm_buffer.c 
$(SDK_ROOT)/components/ble/peer_manager/pm_mutex.c 
$(SDK_ROOT)/components/ble/peer_manager/security_dispatcher.c 
$(SDK_ROOT)/components/ble/peer_manager/security_manager.c \ 
 I believe the peer manger stuff is needed for DFU just for the fds_init() call 
 Edit sdk_config.h to add these changes: 
 #define CRC32_ENABLED 1
#define PEER_MANAGER_ENABLED 1
#define APP_SCHEDULER_ENABLED 1
#define FDS_ENABLED 1 
 Next is to add DFU service to my custom service module 
 Add the following stock functions (body not pasted here): 
 static void advertising_start(void)
static void ble_dfu_evt_handler(ble_dfu_t * p_dfu, ble_dfu_evt_t * p_evt)
static void pm_evt_handler(pm_evt_t const * p_evt)
static void sys_evt_dispatch(uint32_t sys_evt)
static void peer_manager_init(bool erase_bonds)
 
 Add the following to ble_stack_init 
 ble_enable_params.common_enable_params.vs_uuid_count = 2;
// Register with the SoftDevice handler module for BLE events.
err_code = softdevice_sys_evt_handler_set(sys_evt_dispatch);
APP_ERROR_CHECK(err_code);
 
 Add the following to services_init() 
 ble_dfu_init_t dfus_init;

// Initialize the Device Firmware Update Service.
memset(&dfus_init, 0, sizeof(dfus_init));

dfus_init.evt_handler = ble_dfu_evt_handler;
dfus_init.ctrl_point_security_req_write_perm = SEC_SIGNED;
dfus_init.ctrl_point_security_req_cccd_write_perm = SEC_SIGNED;

err_code = ble_dfu_init(&m_dfus, &dfus_init);
APP_ERROR_CHECK(err_code);
 
 Add the following to vle_evt_dispatch() 
 ble_dfu_on_ble_evt(&m_dfus, p_ble_evt);
 
 Add the following to the BLE init function call 
 peer_manager_init(true);
 
 Update the linker script 
 SEARCH_DIR(.)
GROUP(-lgcc -lc -lnosys) 
 MEMORY
{
FLASH (rx) : ORIGIN = 0x1f000, LENGTH = 0x59000
RAM (rwx) : ORIGIN = 0x20002138, LENGTH = 0xdec8
BOOTLOADER_SETTINGS (rw) : ORIGIN = 0x0007F000, LENGTH = 0x1000
} 
 SECTIONS
{
.bootloaderSettings(NOLOAD) :
{ 
 } > BOOTLOADER_SETTINGS 
 .fs_data :
{
PROVIDE(__start_fs_data = .);
KEEP( (.fs_data))
PROVIDE(__stop_fs_data = .);
} > RAM
.pwr_mgmt_data :
{
PROVIDE(__start_pwr_mgmt_data = .);
KEEP( (.pwr_mgmt_data))
PROVIDE(__stop_pwr_mgmt_data = .);
} > RAM
} INSERT AFTER .data; 
 INCLUDE "nrf5x_common.ld"

Custom service + DFU

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