Initial commit

.gitignore

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+*.html
+*.doc
+*.docx
+*.psd

CHANGELOG.md

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+# Change Log
+All notable changes to this project will be documented in this file.
+This project adheres to [Semantic Versioning](http://semver.org/).
+
+## [0.6] - 2015-03-01
+### Added
+- C# Source files and compiled application written in C# to interface with the device
+- Command List.pdf - Contains commands list, explanations and example input and UART output.
+- Command [C:M00x] to chose between continuous sending of Voltage and Current draw readings
+ and on demand. x means 1=Continuous, 0=On Demand
+- Command [C:Dxxx] to set delay in continuous mode. xxx is delay of xxx*100ms. [eg. 005 -> 500ms delay]
+- Reading of device VCC rail via resistor divider and using that data to further
+self-calibrate the device.
+- Using VCC_voltage/4096 as DAC quant instead of 5V/4096 making the device more precise
+and immune to the VCC rail noise/fluctuation.
+- Added function to issue self recalibrate command.
+- ACTIVITY LED to notify user when changes have been received/applied and as a general
+indication of activity.
+- MCU POWER LED for indication if device is powered up
+- PSU under test VOLTAGE PRESENT LED indicating that MCU is measuring voltage above 1V
+between + and - leads of the PSU under test.
+
+### Changed
+- \r\n moved from the start of the string to the end of the string.
+- UART Receiver Interrupt handling routine (aka RX ISR) has become too big so I've moved it
+to separate file called ISRFunctions.h and ISRFunctions.c This should improve code readability
+and also simplify the process of adding support for new commands.
+ISR is still big but at this moment it "has to be". At least it should be easy to follow.
+- UART Set/Read API made more coherent. Using S:xxxx for SET voltage and C:xxxx for configuring
+and communicating with the device.
+- Command and function names have been renamed to further reflect what peripheral/device
+they belong to and set to easier to read format. (still a lot of work to do here...)
+
+## [0.5] - 2015-02-01
+### Added
+- General "human readable" API to set/read data from the device. Hopefully making
+use of this device with other software easier and more pleasant. :)
+
+### Fixed
+- Issues where after disconnecting UART or re-powering the device, last programmed
+target current draw will remain and be immediately set as new target causing unwanted
+stress or overload on the PSU under test
+- Overflowing the DAC/VCC value will result in no status change instead of resetting to 0A draw.
+Also an error message will be sent over UART notifying the user.
+
+## [0.4] - 2015-01-21
+### Added
+- Code to support DAC I2C communication.
+- Code to support UART setting target current draw from the PSU under test.
+
+### Changed
+- Modified schematic to house potentiometer with MCP4726 (12bit DAC) to enable users to set
+target current draw via UART or set manual mode.
+
+
+## [0.3] - 2015-01-18
+### Changed
+- Switched to using 5V rail for MCU.
+- Switched to using MCP4002 (rail-to-rail) OP-Amp instead of LM324.
+- Miscellaneous (minor) changes to voltage dividers and sensing resistor.
+
+## [0.2] - 2015-01-17
+### Changed
+- Changed function descriptions and names to be more coherent.
+
+### Added
+- Reading voltage from potentiometer (besides PSU VCC and voltage on sensing resistor).
+- Functions to send VCC, Resistor Voltage and PSU Voltage over UART in more convenient form.
+
+## [0.1] - 2015-01-15
+### Added
+- Initial build.
+