Schematic
Previously, I had given a suggested wiring here, but there was no project proposal. This time I am expecting you to think critically about where each component should be connected to utilize the modules in the MSP430 that are needed. There is a lot of wiring here, so _do things in stages and test as you add things to your board!_ This is _critial_ for the project.
Design
You are to submit to me a paper document that possibly has the following headings:
* Introduction
* What project are you doing?
* Components and Modules
* What components will you use?
* How are those components laid out on the breadboard?
* To which pins are they connected?
* Which MSP430 functionality will you use?
* What will those microcontroller modules be doing?
* Schematic Draft
* Visual aids are good!
* Pseudocode
* How will your code be organized?
* Will you have multiple files?
* Multiple functions?
Objective
For this assignment, you are to create a color selector using the RGB LED, button, potentiometer and 7-segment display. The behavior should be as follows:
1. On start up, green and blue should be off and the red color should be "selected".
- the intensity of the red element is set using the potentiometer and
- the value of that intensity should be shown on the 7-segment display (`_r00` - `_rFF`).
- _Note that this means you have to change a value from the range `0` - `1023` to the range `0` - `255`._
1. Pressing the onboard switch selects the next color: green or blue (it doesn't really matter which).
1. The intensity of the red element is _left at what it was set when the switch was pressed_.
1. Now the next color can be set and the value of the intensity shown on the display (`_g00` - `_gFF`) or (`_b00` - `_bFF`).
- for green, you can use a lowercase `g` (a `9` with the bottom segment turned on)
1. Repeat for the _next_ color.
1. Pressing the switch a third time should cycle back to setting the red color.
1. Periodically, the microcontroller should output to the host (using `cio_printf()`) the name of the current color as determined from a large lookup array, which will be given to you.
This means, in software we are utilizing:
1. All 3 PWM channels (T0.1, T1.1, T1.2)
1. A timer interrupt for the display
- _Note that this means one of the timers is doing both PWM and an interrupt!_
1. A button interrupt
1. The ADC10 module for analog input
- a code file `dtc.c` is provided that implements an `initialize_dtc()` function, use this to work with the potentiometer!
1. A single UART pin (P1.2, UART TXD) that allows us to print to the host (UART RXD will not be used and must be reset after the call to `serial_init()`)
- _Remember that you cannot connect this pin to anything or it will interfere with the UART communication!_
That's it! Good luck and have fun!
