• status (coming at some point)

• The C Book, online C book
  • PDF of above
• printf PDF

• continued exposure utilizing loops in problem solving
• possible integration of arrays to further streamline process
• binary counter in incrementing and decrementing fashion

• multi-coloured (RGB) LED, using PWM to set different intensities of Red, Green, and Blue (100 different levels of adjustment for each)
• In the examples subdirectory, there is now a colorled entry with a sample program.

Here's a diagram of the circuit to assemble:

Once you have the circuit wired up and verify operation with the sample program, I'd like you to write a new program that:

• starts at “nothing” (no light)
• going from nothing and gradually (10 steps) to full intensity:
  • nothing to red, then reset, and go:
  • nothing to green, then reset, and go:
  • nothing to blue, then reset, and go:
  • nothing to purple, then reset, and go:
  • nothing to red+green, then reset, and go:
  • nothing to green+blue, then reset, and go:
  • nothing to white (red+green+blue).

• Figure out how to set the level of ONE color to its maximum value
• How would you adjust these across a given range (0-99)
• One thing at a time: worry about JUST red first, then JUST green.

lab46:~$ cd /var/public/fall2019/c4eng/examples/colorled
lab46:/var/public/fall2019/c4eng/examples/colorled$ ls
colorled.c
lab46:/var/public/fall2019/c4eng/examples/colorled$ scp colorled.c pi@10.80.2.X:

On the scp line, do NOT forget the trailing colon. It is important.

pi@raspberrypi:~$ ls
program.c
pi@raspberrypi:~$ scp program.c user@lab46:

When done, submit your source code on lab46 for the project epf0

• potentiometer + LED
  • potled.c now placed in examples subdirectory. It has been enhanced with further comments.
  • NOTE: In order to run this program, we will need to enable I2C support on the pi (a one-time thing, then we're set).

Here's a diagram of the parts needed and circuit to assemble:

• button + buzzer
  • buzzer.c now placed in examples subdirectory. It has been enhanced with further comments.
  • NOTE: This program is functionally similar to our buttonled.c program we worked on earlier.

Here's a diagram of the parts needed and circuit to assemble:

• The “buttonled” programs we wrote in class have been added underneath the examples subdirectory in the c4eng public directory, including additional comments.
  • buttonled.c - basic program; press button to light up LED
  • buttonled2.c - LED will appear to “blink” for the duration of the button press
• Please make sure you are reading through the chapter on if statements/selection structures/conditional statements.

Here's a diagram of the parts needed and circuit to assemble:

• I have put together a sof0 hints page, that may have some useful information you want to check out if you are having trouble getting started.
• Please make sure you are reading through the chapter on variables and arithmetic operations.

• After getting through the typically chaotic first week activities, the dust is starting to settle; questions are being asked, things are being figured out.
• We went through the “Hello, World!” C program, and then moved onto the next programming project, dtr0.
• There are likely some questions on a number of aspects related to dtr0. I am endeavouring to put together a document to provide some additional background information.
• The pct1 project is also in progress. For some of the more technical aspects of the project, I have also put together a document to provide some additional background information.

• Welcome! I've wrapped some initial activities into the cci0 and dtr0 projects, that I'd like you to perform by the given deadlines (by 11:59:59pm / 23:59:59 on posted day).
• If you've never used a UNIX system before, I'd recommend reading UNIX for the Beginning Mage; it is short, and likely one of the best reads you'll ever have.
• Get familiar with how to log onto Lab46, and once on:
  • change to your src/ subdirectory
  • create/edit .c files (such as hello.c), and learn how to save/exit
  • compile the C program (.c file(s)) into an executable with gcc
  • execute the compiled C program (the executable) by specifying a path: ./program_name