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1 # How to Create From Scratch a Project for _CPU1-Discovery_ Code #
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2
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3 The OpenSTM32 wiki have a [page](http://www.openstm32.org/Getting%2Bstarted%2Bwith%2BSystem%2BWorkbench%2Bfor%2BSTM32) to start a project from scratch. With the latest version of every support libraries and sources from ST. But here I prefer to have a project with the support files validated (and compatible) with the _OSTC4_ code.
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4
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5 ## Start with an Empty Project ##
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6
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7 **Special Notes**:
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8
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9 - _Linux_ users should read about this **well known _Eclipse_ bug** : http://www.openstm32.org/faq1#q22
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10 - We do have a _STM32F427IIT6_ chip as CPU1. But the support file provided by _ST_ lake for _LCD TFT Display Controller_ (aka LTDC), even in the latest available version 1.7.2 from 2017-11-06... So we use the STM32F429IITx support file instead, that seems to be similar enough.
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11
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12 In the following description, I suppose you used _mercurial_ to clone the sources into a **D:\Dev\OSTC4** directory. Make the changes for your own settings...
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13
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14 0. Start the IDE. On most machine it will be the `eclipse` in the _Ac6_ folder you installed.
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15 1. Create an empty project: `File` > `New` > `C Project`
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16 2. Choose `AC6 STM32 MCU Project` and `AC6 STM32 MCU GCC`. Click `Next`
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17 Note: **make sure NOT TO CLICK FINISH... as it will skip all the rest of the configuration wizard !**
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18 3. Keep `Debug` and `Release` configurations. Click `Next`
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19 4. Create a new board, that you can name **OSTC4-CPU1-F429**, by choosing:
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20 > Series: `STM32F4`
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21 > Mcu: `STM32F429IITx`
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22 > Debug: `JTAG`
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23 Click `Next`.
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24 5. Keep `No firmware` and select `Don't generate startup files`. Then click `Finish`
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25
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26 ## Configure Various Settings ##
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27
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28 1. In the _C/C++ Projects_ explorer, select your project top-level folder
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29 2. Right on it, select `Properties`, `Resource` and set `Text file encoding` to **UTF-8**
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30 3. Right on it, select `Properties`, `Resource` then `Linked Resources` and click on `New...` to define a new variable **OSTC4** that points to your source folder **D:\Dev\OSTC4** (or whatever path you used on your system).
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31 This should allow to change the project's origin with a single variable change.
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32
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33 # Add Sources Folders #
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34
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35 1. In the _C/C++ Projects_ explorer, select your project top-level folder
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36 2. Right-click to add a `New` > `Folder`. In `Advanced settings >` click `Link to alternate location` and then the `Variables...` button. Click on the **OSTC4** variable, then click `Extend...` and select the **Common\\** sub-directory. Click `Finish`
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37 3. Do the same to import the linked folder **OSTC4\Discovery**
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38
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39 ## Make _Eclipse_ aware you just added sources, not junk ##
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40
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41 (_Note: this step is only useful on specific versions of Eclipse. And already done by default on others..._)
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42
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43 1. In the _C/C++ Projects_ explorer, open your project top-level project.
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44 2. Right click on the `Common` folder, select `Resource Configurations...`, and `Exclude from build`. Make sure to UNCHECK both `Debug` and `Release` check-boxes.
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45 3. Do the same for the `Discovery` folder.
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46
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47 ## Make _Eclipse_ aware not to compile templates ##
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48
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49 Some sources or directories in the _ST_ distribution contains source you shall not compile. So you should tell _OSE_.
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50
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51 1. In the _Project Explorer_, open item `Common/Drivers/STM32F4xx_HAL_DRIVER_v120/Src`. Right click on `stm32f4xx_hal_msp_template.c`source file, select `Resource Configurations...`, and `Exclude from build`. Make sure both `Debug` and `Release` check-boxes are CHECKED.
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52 2. Do the same on the `Common/Drivers/STM32F4xx_v220/Source/Templates` directory.
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53
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54 # Compile #
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55
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56 Ok, sources are there. You can read them. But you need a few more efforts to let the IDE find everything he requires to compile _CPU1 Discovery_ firmware.
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57
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58 ## Add include paths ##
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59
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60 1. Select your top-level project, right-click to edit `properties`. In `C/C++ Build` choose `Settings`, then `MCU GCC Compiler` and `Includes`. **Make sure to select `Configuration: [All Configurations]` **. Click `Add...` choose `Workspace...` and select the `Common/Drivers/CMIS_v210` directory.
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61 2. Do the same for `Common/Drivers/STM32F4xx_v220/Include` directory.
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62 3. Do the same for `Common/Drivers/STM32F4xx_HAL_DRIVER_v120/Inc` directory.
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63 4. Do the same for `Common/Inc` directory.
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64 5. Do the same for `Discovery/Inc` directory.
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65 6. Use the _Move Up_ icon to make sure `Discovery/Inc` is first.
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66 7. Use the `Configuration:` popup to check you have all the includes in both `Debug` and `Release` configuration.
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67
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68 Once done, If you go to the _C/C++ Projects explorer_, open your top-level project, and open the `Includes` item, you should see:
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69
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70 - a few lines added by the system `.../Ac6/Workbench/plugins/.../compiler/...` with include paths required by the GCC compiler.
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71 - then your 5 include directories (shown in alphabetic order, not priority order... too bad). Make sure to open each of them and to double-click on a .h file to check it opens correctly in the IDE.
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72
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73 ## Add Link Options ##
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74
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75 1. Select your top-level project, right-click to edit `properties`. In `C/C++ Build` choose `Settings`, then `MCU G++ Linker` and `General`.
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76 And select _linker Script_: `OSTC4/Common/CPU1-F429.ld`
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77
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78 ## Build ELF firmware ##
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79
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80 1. Click the `Build` button (hammer icon) on the top bar. |
