nRF52_shtc3: No Bluetooth api used, only for SHTC3 sensor communication

Setting up Segger Embedded Studio for nRF52840 development

Follow these step to install required software and SDK

1. Install Segger Embedded Studio for ARM 4.52b
2. Activate free license for Nordic Semiconductors development
3. Download nRF5 SDK V 15.3.0 and extract it to a short address of drive. e.g. (C:\nRF5_SDK_15.3.0)

Setup Segger Studio Environment

1. Open Segger Embedded Studio we installed.
2. Go to Tab Tools->Building, under Build look for Global Macros, insert the nRF5 SDK address to assign a variable to it. e.g.(NRF52_SDK=C:/nRF5_SDK_15.3.0)
3. Now we can use this variable globally in our projects.

Creating nrf5 project

1. Click on Create New project.
2. If Nordic Semiconductors package is not installed, install it.
3. Select C/C++ executable project, enter project name and location as shown.
4. Click Next. Select Target processor. Enter settings as shown. e.g.(nRF52840_xxAA). Click Next.
5. Uncheck all folders. We will include them from SDK directly. Uncheck Import all files and package files.
6. Click Next and then Finish.

Configure project to be used with nRF5 V 15.3.0 SDK

To add CMSIS tool follow the procedure

From link Adding CMSIS tool

1. Go to File -> Open Studio Folder... -> External Tools Configuration.
2. The tools.xml file will be opened in the editor.
3. Insert the following text before the tag
4. Restart the IDE.

<item name="Tool.CMSIS_Config_Wizard" wait="no">
    <menu>&amp;CMSIS Configuration Wizard</menu>
    <text>CMSIS Configuration Wizard</text>
    <tip>Open a configuration file in CMSIS Configuration Wizard</tip>
    <key>Ctrl+Y</key>
    <match>*config*.h</match>
    <message>CMSIS Config</message>
    <commands>
      java -jar &quot;$(CMSIS_CONFIG_TOOL)&quot; &quot;$(InputPath)&quot;
    </commands>
</item>

to go manually

1. Right click on project from Project Explorer. Select Open Solution in Editor.

2. Add code below using tag as shown after to get stared faster OR can be added manually.
   

   <folder Name="System Files">
     <file file_name="$(NRF52_SDK)/modules/nrfx/mdk/ses_startup_nrf_common.s" />
     <file file_name="$(NRF52_SDK)/modules/nrfx/mdk/ses_startup_nrf52840.s" />
     <file file_name="$(NRF52_SDK)/modules/nrfx/mdk/system_nrf52840.c" />
   </folder>
   <folder Name="Board">
     <file file_name="$(NRF52_SDK)/components/boards/boards.c" />
   </folder>
   <folder Name="nRF_Drivers">
     <file file_name="$(NRF52_SDK)/modules/nrfx/drivers/src/nrfx_twi.c" />
     <file file_name="$(NRF52_SDK)/modules/nrfx/drivers/src/nrfx_twim.c" />
     <file file_name="$(NRF52_SDK)/modules/nrfx/drivers/src/nrfx_uart.c" />
     <file file_name="$(NRF52_SDK)/modules/nrfx/drivers/src/nrfx_uarte.c" />
     <file file_name="$(NRF52_SDK)/modules/nrfx/drivers/src/prs/nrfx_prs.c" />
     <file file_name="$(NRF52_SDK)/modules/nrfx/soc/nrfx_atomic.c" />
     <file file_name="$(NRF52_SDK)/integration/nrfx/legacy/nrf_drv_twi.c" />
     <file file_name="$(NRF52_SDK)/integration/nrfx/legacy/nrf_drv_uart.c" />
   </folder>
   <folder Name="nRF_Libraries">
     <file file_name="$(NRF52_SDK)/external/fprintf/nrf_fprintf.c" />
     <file file_name="$(NRF52_SDK)/external/fprintf/nrf_fprintf_format.c" />
     <file file_name="$(NRF52_SDK)/components/libraries/strerror/nrf_strerror.c" />
     <file file_name="$(NRF52_SDK)/components/libraries/ringbuf/nrf_ringbuf.c" />
     <file file_name="$(NRF52_SDK)/components/libraries/memobj/nrf_memobj.c" />
     <file file_name="$(NRF52_SDK)/components/libraries/balloc/nrf_balloc.c" />
     <file file_name="$(NRF52_SDK)/components/libraries/atomic/nrf_atomic.c" />
     <file file_name="$(NRF52_SDK)/components/libraries/util/app_error.c" />
     <file file_name="$(NRF52_SDK)/components/libraries/util/app_error_handler_gcc.c" />
     <file file_name="$(NRF52_SDK)/components/libraries/util/app_error_weak.c" />
     <file file_name="$(NRF52_SDK)/components/libraries/util/app_util_platform.c" />
     <file file_name="$(NRF52_SDK)/components/libraries/util/nrf_assert.c" />
   </folder>
   <folder Name="nRF_Log">
     <file file_name="$(NRF52_SDK)/components/libraries/log/src/nrf_log_backend_rtt.c" />
     <file file_name="$(NRF52_SDK)/components/libraries/log/src/nrf_log_backend_serial.c" />
     <file file_name="$(NRF52_SDK)/components/libraries/log/src/nrf_log_backend_uart.c" />
     <file file_name="$(NRF52_SDK)/components/libraries/log/src/nrf_log_default_backends.c" />
     <file file_name="$(NRF52_SDK)/components/libraries/log/src/nrf_log_frontend.c" />
     <file file_name="$(NRF52_SDK)/components/libraries/log/src/nrf_log_str_formatter.c" />
   </folder>
   <folder Name="nRF_SEGGER_RTT">
     <file file_name="$(NRF52_SDK)/external/segger_rtt/SEGGER_RTT.c" />
     <file file_name="$(NRF52_SDK)/external/segger_rtt/SEGGER_RTT_printf.c" />
     <file file_name="$(NRF52_SDK)/external/segger_rtt/SEGGER_RTT_Syscalls_SES.c" />
   </folder>
   <folder Name="Segger Startup file">
     <file file_name="$(StudioDir)/source/thumb_crt0.s" />
   </folder>
   

   

3. Now all required driver source files are added to this project. Now you should source file main.c in project.

4. Add sdk_config.h and edit as per requirement. Sample can be found in SDK->config-> Processor ->config.

5. Copy file flash_placement.xml from SDK->config> Processor ->ses to project, use it for section placement.

6. In Project Explorer right click on project, click on Options.

7. Select configuration Common.

   1. Under Code select Build.
   2. Enter Memory Segment -> FLASH RX 0x0 0x100000;RAM RWX 0x20000000 0x40000.
   3. Enter Project Macros -> CMSIS_CONFIG_TOOL=$(NRF52_SDK)/external_tools/cmsisconfig/CMSIS_Configuration_Wizard.jar.
   4. Select Compiler, set compiler option to gcc.
   5. Select Linker, set Linker to GNU. Set Section Placement Macros with

   FLASH_PH_START=0x0
   FLASH_PH_SIZE=0x100000
   RAM_PH_START=0x20000000
   RAM_PH_SIZE=0x40000
   FLASH_START=0x0
   FLASH_SIZE=0x100000
   RAM_START=0x20000000
   RAM_SIZE=0x40000
   

   

   6. Select Preprocessor.
      1. Enter Preprocessor Definitions with

      BOARD_PCA10056
      BSP_DEFINES_ONLY
      CONFIG_GPIO_AS_PINRESET
      FLOAT_ABI_HARD
      INITIALIZE_USER_SECTIONS
      NO_VTOR_CONFIG
      NRF52840_XXAA
      

      2. Set User Include Directories with

      $(ProjectDir)/config
      $(NRF52_SDK)/components
      $(NRF52_SDK)/components/boards
      $(NRF52_SDK)/components/drivers_nrf/nrf_soc_nosd
      $(NRF52_SDK)/components/libraries/atomic
      $(NRF52_SDK)/components/libraries/balloc
      $(NRF52_SDK)/components/libraries/bsp
      $(NRF52_SDK)/components/libraries/delay
      $(NRF52_SDK)/components/libraries/experimental_section_vars
      $(NRF52_SDK)/components/libraries/log
      $(NRF52_SDK)/components/libraries/log/src
      $(NRF52_SDK)/components/libraries/memobj
      $(NRF52_SDK)/components/libraries/ringbuf
      $(NRF52_SDK)/components/libraries/strerror
      $(NRF52_SDK)/components/libraries/util
      $(NRF52_SDK)/components/toolchain/cmsis/include
      $(NRF52_SDK)/external/fprintf
      $(NRF52_SDK)/external/segger_rtt
      $(NRF52_SDK)/integration/nrfx
      $(NRF52_SDK)/integration/nrfx/legacy
      $(NRF52_SDK)/modules/nrfx
      $(NRF52_SDK)/modules/nrfx/drivers/include
      $(NRF52_SDK)/modules/nrfx/hal
      $(NRF52_SDK)/modules/nrfx/mdk
      ./config
      

8. Debug > Simulator > Memory Simulation Parameter to RWX 00000000,00100000,FFFFFFFF;RWX 20000000,00010000,CDCDCDCD.

9. Debug > Target Script > Reset Script to TargetInterface.resetAndStop(). Debug > Target Script > Target Script File -> Empty.

10. Debug > Target Trace > Trace Initialize Script

11. Click OK to save settings.