nRF52832 BLE_DFU空中升级OTA（三）准备升级工程（SDK14.2.0）

准备需要加入DFU功能的工程

在工程main文件services_init函数中加入DFU服务

 uint32_t err_code;
 
 // Initialize the async SVCI interface to bootloader.
 err_code = ble_dfu_buttonless_async_svci_init();
 //APP_ERROR_CHECK(err_code);
 if(NRF_ERROR_NO_MEM != err_code)
 {
     ble_dfu_buttonless_init_t dfus_init =
     {
         .evt_handler = ble_dfu_evt_handler
     };
 
     err_code = ble_dfu_buttonless_init(&dfus_init);
     APP_ERROR_CHECK(err_code);
 }

加入DFU事件处理函数

 // YOUR_JOB: Update this code if you want to do anything given a DFU event (optional).
 /**@brief Function for handling dfu events from the Buttonless Secure DFU service
  *
  * @param[in]   event   Event from the Buttonless Secure DFU service.
  */
 static void ble_dfu_evt_handler(ble_dfu_buttonless_evt_type_t event)
 {
     switch (event)
     {
         case BLE_DFU_EVT_BOOTLOADER_ENTER_PREPARE:
             NRF_LOG_INFO("Device is preparing to enter bootloader mode.");
             // YOUR_JOB: Disconnect all bonded devices that currently are connected.
             //           This is required to receive a service changed indication
             //           on bootup after a successful (or aborted) Device Firmware Update.
             break;
 
         case BLE_DFU_EVT_BOOTLOADER_ENTER:
             // YOUR_JOB: Write app-specific unwritten data to FLASH, control finalization of this
             //           by delaying reset by reporting false in app_shutdown_handler
             NRF_LOG_INFO("Device will enter bootloader mode.");
             break;
 
         case BLE_DFU_EVT_BOOTLOADER_ENTER_FAILED:
             NRF_LOG_ERROR("Request to enter bootloader mode failed asynchroneously.");
             // YOUR_JOB: Take corrective measures to resolve the issue
             //           like calling APP_ERROR_CHECK to reset the device.
             break;
 
         case BLE_DFU_EVT_RESPONSE_SEND_ERROR:
             NRF_LOG_ERROR("Request to send a response to client failed.");
             // YOUR_JOB: Take corrective measures to resolve the issue
             //           like calling APP_ERROR_CHECK to reset the device.
             APP_ERROR_CHECK(false);
             break;
 
         default:
             NRF_LOG_ERROR("Unknown event from ble_dfu_buttonless.");
             break;
     }
 }

加入几个必要的文件到工程

SDK_14.2.0工程\components\ble\ble_services\ble_dfu下的

SDK_14.2.0工程\components\libraries\bootloader\dfu下的

并加入以下头文件路径

SDK_14.2.0工程\components\libraries\bootloader\dfu

SDK_14.2.0工程\components\libraries\svc

Main.c 头文件中加入

#include "ble_dfu.h"

记得修改sdk_config.h中NRF_SDH_BLE_VS_UUID_COUNT

 // <o> NRF_SDH_BLE_VS_UUID_COUNT - The number of vendor-specific UUIDs.
 #ifndef NRF_SDH_BLE_VS_UUID_COUNT
 #define NRF_SDH_BLE_VS_UUID_COUNT 1    //默认为0
 #endif 

开启RTT打印LOG

 //==========================================================
 // <e> NRF_LOG_ENABLED - Logging module for nRF5 SDK
 //==========================================================
 #ifndef NRF_LOG_ENABLED
 #define NRF_LOG_ENABLED 1
 #endif

以及

 //==========================================================
 // <e> NRF_LOG_BACKEND_RTT_ENABLED - nrf_log_backend_rtt - Log RTT backend
 //==========================================================
 #ifndef NRF_LOG_BACKEND_RTT_ENABLED
 #define NRF_LOG_BACKEND_RTT_ENABLED 1
 #endif

编译一下，下载观察RTT信息修改RAM地址，再次编译后没有问题，就可以用新生成的hex文件来制作升级zip了。