Offer my new and modified usr/app modifications and enhancements.#159

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ab1aw wants to merge 28 commits intof9micro:masterfrom

Commits on Feb 7, 2019

Modifications to build environment files to achieve successful build in CygWin environment using 8.2018-q4-mafor ARM toolset.
ab1aw
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Commits on Feb 18, 2019

Trying to resolve the memory fault - see https://github.com/f9micro/f9-kernel/issues/7
ab1aw
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Revert the modifications for the failed attempt to build and run using the version 8-2018-q4-major ARM toolchain. Revert back to using the 4_8-2013q4-major ARM toolchain when building on Windows 10…
ab1aw
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Add repeating printf() to ping-pong test to show activity.
ab1aw
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Commits on Feb 19, 2019

User app to blink LEDs on the STM32F407 Discovery board. Code taken from https://raw.githubusercontent.com/benwei/f9-kernel plus modifications to achieve successful build. Execution is faulty; exec…
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Commits on Feb 24, 2019

Commits on Feb 25, 2019

Commits on Feb 26, 2019

Commits on Feb 28, 2019

First cut at adding I2C support for platform STM32F407G-DISC1. Copied platform/stm32f429/i2c.c to platform/stm32f4/i2c.c. Added calls to initialize I2C in main() of new i2c/main.c. Successfully com…
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Commits on Mar 4, 2019

Commits on Mar 7, 2019

NOTE: Includes enhancements and modifications.
ab1aw
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Commits on Jun 6, 2019

Add commentary to identify LED colors relative to LED pins.
$U-MEDACUITY\mpolia$ $U-MEDACUITY\mpolia$
U-MEDACUITY\mpolia
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U-MEDACUITY\mpolia
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