NRF52832空中升级DFU

Secure DFU环境搭建

升级原理，加密原理在此不做描述，详情参考http://www.cnblogs.com/iini/p/9314246.html

1.工具一览

gcc-arm-none-eabi编译环境：GCC编译环境

https://developer.arm.com/open-source/gnu-toolchain/gnu-rm/downloads

mingw 平台（win版的Linux命令行）

https://sourceforge.net/projects/mingw/files/latest/download?source

micro-ecc-master源码

https://github.com/kmackay/micro-ecc

python 安装文件

https://www.python.org/downloads/

pc-nrfutil

https://github.com/NordicSemiconductor/pc-nrfutil/

nrfgo-studio
nrf connect app

2.安装指导

Secure DFU需要micro-ecc库进行签名验证，需要micro_ecc_lib_nrf52.lib，需要使用GCC编译器生成。

2.1 gcc-arm-none-eabi安装

gcc-arm-none-eabi-4_9-2015q3-20150921-win32.exe,直接双击安装，注意使用默认安装路径，不要修改

安装完成

双击mingw-get-setup.exe，点击install进行安装，选择默认路径

安装好后弹出package包安装界面MinGW Installation Manager，按下图所示进行选择

选择后，点击InstallationàApply Changes

平台安装验证：

修改好系统环境变量后，重启电脑，运行命令提示符，如下所示则安装成功

需要生成micro_ecc_lib_nrf52.lib，也可直接使用已经编译好的文件micro-ecc_sdk14_15_newer.rar解压后替换micro-ecc文件夹。

1.将micro-ecc-master源码复制到SDK目录下的external\micro-ecc中，并重命名为micro-ecc

2.打开MinGW的命令行msys.bat

在批处理框里输入要生成库的gcc算法路径

cd E:/keil_workspace/NORDIC/nRF5_SDK_15.0.0_a53641a/external/micro-ecc/nrf52hf_keil/armgcc

之后输入make

出现错误后，按照提示修改gcc的Makefile.windows文件如下

将gcc编译器路径更换为实际路径

#GNU_INSTALL_ROOT := C:/Program Files (x86)/GNU Tools ARM Embedded/6 2017-q2-update/bin/

GNU_INSTALL_ROOT := C:/Program Files (x86)/GNU Tools ARM Embedded/4.9 2015q3/bin/

#GNU_VERSION := 6.3.1

GNU_VERSION := 6.3.0

GNU_PREFIX := arm-none-eabi

1.双击python-2.7.14.amd64.msi安装，注意使用默认路径，安装过程使用默认插件配置直接一直next。

2.系统环境变量添加

3.安装验证

修改环境变量后重启电脑，命令行输入python -V

需要联网

打开命令行，输入pip install nrfutil安装nrfutil

安装完成后，输入nrfutil version,如下则表示安装成功

3.升级文件制作

为便于调试与生产上的烧录，编写一些 bat 文件来操作nrfutil工具指令

key_generate.bat

@echo off  pause echo "执行之前需要确认文件路径，修改完成后可注释..." pause   ::1）通过nrfutil生产私钥和公钥文件 ::generate private key nrfutil keys generate priv.pem ::generate public key related with private key: priv.pem nrfutil keys display --key pk --format code priv.pem --out_file dfu_public_key.c   ::2）复制dfu_public_key.c文件到dfu工程 ::修改指定文件夹或文件自己修改ObjPath源文件位置，HexDestPath目标文件或文件夹位置 set ObjPath=dfu_public_key.c  set HexDestPath=E:\keil_workspace\NORDIC\nRF52832_htwh_sdk15.0\examples\dfu  ::复制指定路径指定文件或文件夹，至HexDestPath路径文件夹 echo y | xcopy "%ObjPath%" /e /r /k "%HexDestPath%" ::xcopy /e/c/h/z "%~pd0*.*" "%out%"  pause

zip_generate.bat

文件中的工程目录请根据实际路径修改

@echo off  ::1）复制工程hex文件到指定文件夹， 需设置文件地址 ::修改指定文件夹或文件自己修改ObjPath源文件位置，HexDestPath目标文件或文件夹位置 set ObjPath=E:\keil_workspace\NORDIC\nRF52832_htwh_sdk15.0\examples\ble_peripheral\ble_app_gnt_freertos-release\pca10040\s132\arm5_no_packs\_build\gnt_app.hex  set HexDestPath=E:\keil_workspace\NORDIC\nRF52832_htwh_sdk15.0\examples\ble_peripheral\ble_app_gnt_freertos-release\wh_Script_SDK15_S132_nRF52832_GNT  ::复制指定路径指定文件或文件夹，至HexDestPath路径文件夹 echo y | xcopy "%ObjPath%" /e /r /k "%HexDestPath%" ::xcopy /e/c/h/z "%~pd0*.*" "%out%"   ::2）生成升级用zip文件 ::nrfutil.exe pkg generate --hw-version 52 --application-version 1 --application gnt_app.hex --sd-req 0xA8 --key-file private.key gnt_app_Dfu15.zip  nrfutil pkg generate --hw-version 52 --application-version 1 --application gnt_app.hex --sd-req 0xA8 --key-file private.key gnt_app_Dfu15.zip   ::pause

@echo off  ::1）生成 settings page for current image: gnt_app.hex ::Bootloader settings存储在Flash最后一个page，它将决定复位后芯片的行为，比如是进入DFU模式还是应用模式，同时它还包含image的CRC值和版本等信息。如果要求芯片复位后进入application，必须正确生成该bootloader settings hex  nrfutil settings generate --family NRF52 --application gnt_app.hex --application-version 1 --bootloader-version 1 --bl-settings-version 1 settings.hex   ::2）合成一个hex用于生产烧录 ::merge bootloader and settings mergehex.exe --merge bootloader.hex settings.hex --output bl_temp.hex ::merge bootloader, app and softdevice mergehex.exe --merge bl_temp.hex gnt_app.hex s132_nrf52_6.0.0_softdevice.hex --output whole.hex  ::pause   ::merge bootloader and settings

4.工程添加DFU服务

1.工程文件

工程文件添加

头文件路径包含

2.工程内容修改

在main.c中添加 DFU 服务支持

// 头文件包含 #if (DFU_SUPPORT == 1) #include "nrf_dfu_ble_svci_bond_sharing.h" #include "nrf_svci_async_function.h" #include "nrf_svci_async_handler.h" #include "ble_dfu.h" #include "nrf_power.h" #include "nrf_bootloader_info.h" #endif  #if (DFU_SUPPORT == 1)  // 进入DFU，应用关机之前的一些操作，注册到power manager电源管理中 static bool app_shutdown_handler(nrf_pwr_mgmt_evt_t event) {     switch (event)     {         case NRF_PWR_MGMT_EVT_PREPARE_DFU:             NRF_LOG_INFO("Power management wants to reset to DFU mode.");             #if (GNT_WDT_EN == 1)             my_wdt_feed();             #endif                          break;          default:             // YOUR_JOB: Implement any of the other events available from the power management module:             //      -NRF_PWR_MGMT_EVT_PREPARE_SYSOFF             //      -NRF_PWR_MGMT_EVT_PREPARE_WAKEUP             //      -NRF_PWR_MGMT_EVT_PREPARE_RESET             return true;     }      NRF_LOG_INFO("Power management allowed to reset to DFU mode.");     return true; }  // 注册应用关机事件处理函数（常用于关机前需要进行的一些操作：如flash操作，控制模块的关闭等） NRF_PWR_MGMT_HANDLER_REGISTER(app_shutdown_handler, 0);  static void buttonless_dfu_sdh_state_observer(nrf_sdh_state_evt_t state, void * p_context) {     if (state == NRF_SDH_EVT_STATE_DISABLED)     {         NRF_LOG_INFO("NRF_SDH_EVT_STATE_DISABLED to DFU mode.");         // Softdevice was disabled before going into reset. Inform bootloader to skip CRC on next boot.         nrf_power_gpregret2_set(BOOTLOADER_DFU_SKIP_CRC);          //Go to system off.         nrf_pwr_mgmt_shutdown(NRF_PWR_MGMT_SHUTDOWN_GOTO_SYSOFF);     } }  /* nrf_sdh state observer. */ NRF_SDH_STATE_OBSERVER(m_buttonless_dfu_state_obs, 0) = {     .handler = buttonless_dfu_sdh_state_observer, };  #endif   #if (DFU_SUPPORT == 1) /**@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;     } } #endif   static void services_init(void) {     ret_code_t         err_code;     nrf_ble_qwr_init_t qwr_init = {0};      // Initialize Queued Write Module.     qwr_init.error_handler = nrf_qwr_error_handler;      err_code = nrf_ble_qwr_init(&m_qwr, &qwr_init);     APP_ERROR_CHECK(err_code);               // 添加GPS_NB_TAG服务     ble_gnts_init_t     gnts_init;          memset(&gnts_init, 0, sizeof(gnts_init));     gnts_init.data_handler = gnts_data_handler;      err_code = ble_gnts_init(&m_gnts, &gnts_init);     APP_ERROR_CHECK(err_code);        #if (DFU_SUPPORT == 1)     ble_dfu_buttonless_init_t dfus_init = {0};     // Initialize the async SVCI interface to bootloader.     err_code = ble_dfu_buttonless_async_svci_init();     APP_ERROR_CHECK(err_code);      dfus_init.evt_handler = ble_dfu_evt_handler;      err_code = ble_dfu_buttonless_init(&dfus_init);     APP_ERROR_CHECK(err_code); #endif      }

3. sdk_config.h 文件设置