wiki unification

misc/git_scripts/git_add_upstream.bat

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+git remote -v
+git remote add upstream https://github.com/rusefi/rusefi_documentation.git
+git remote -v

misc/git_scripts/git_pull_submodules.bat

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+git submodule update --init

misc/git_scripts/git_reset_to_upstream.bat

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+git fetch upstream
+git checkout master
+git reset --hard upstream/master
+git push origin master -f

misc/git_scripts/readme.md

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+
+The Windows Batch files are targeted at potential contributors who would fork rusefi/rusefi_documentation and work on their clone locally.
+
+
+These scripts require command line GIT client.

misc/selecting_open_source_ecu_microcontroller.md

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+
+As of Jan 2019 we still like Cortex-M a lot stm32, here are the reasons: Performance, Availability,
+Toolchain, Hardware API.
+
+1. **Performance** - stm32 gives us 160MHz and close to 200Kb of RAM with floating point unit.
+
+2. **Availability** stm32 is cheap and readily available in low quantity both just chips and convenient dev boards
+
+3. **Toolchain** Free GNU Arm Embedded Toolchain allows us to compile and debug software
+
+4. **Hardware API** ChibiOS Hardware Abstraction Layer allows us to not spend too much time debugging low level peripheral registers
+
+One of the things we do not like about smt32 Cortex-M is the fact that this family is not automotive and not based on 5 volts.
+In an ideal chip we would like to see 5v ADC and maybe more hardware timers. 
+
+
+We've looked into a few other chips but so far have not found a better overall platform.
+
+Relevant forum threads:
+
+S32K148 https://rusefi.com/forum/viewtopic.php?f=13&t=816
+
+SPC563Mx, MPC563x - this one has some ChibiOS support - https://rusefi.com/forum/viewtopic.php?f=13&t=429
+
+TMS570 - https://rusefi.com/forum/viewtopic.php?f=13&t=407 & https://github.com/rusefi/rusefi/issues/89
+
+(in Russian) https://rusefi.com/forum/viewtopic.php?f=8&t=269