CS107e Winter 2018


Welcome to the Winter 2018 offering of CS107e!

CS107 is the third course in Stanford’s introductory programming sequence. CS106 provides students with a solid foundation in programming methodology and abstractions, and CS107 follows on to give you the skills needed to build computer systems.

There are two major learning goals for the course.

First, to understand how computers represent information, execute programs, and control peripherals.

Second, to master command-line programming tools and the C programming language.

The course builds understanding from the ground up using bare metal programming on the Raspberry Pi. Bare metal programming uses no operating system and few external libraries.

Students will receive a Raspberry Pi and a kit of parts, and all assignments will run on the Raspberry Pi. Assignments build upon each other by adding more and more functionality to a core library. They culminate in a simple personal computer shell using a keyboard and display.

Finally, students do a project of their choosing where they build a complete hardware-software system.

For information about the differences between CS107 and CS107e, check out this FAQ.

Announcements

All class announcements will be posted on Piazza.

Course Info

Schedule

In the readings, K&R is The C Programming Language (Kernighan and Ritchie), and EssentialC is a PDF available via Stanford’s CS Library. A digital copy of K&R is available to Stanford students via Safari Books Online.

Please read the assigned readings before attending lecture and lab. You should also read the guides for each week.

Winter 2018 schedule.

Topics Readings
Week 1 Jan 8
Lecture 1 (Mon): Introduction (slides) Review electricity, binary and hexadecimal numbers and bitwise operations, and the unix command line.
No Lab (Review this library of unix reference documents and videos from CS107)
Assignment 0: Choose Lab Section, Learn Git
Lecture 2 (Fri): Introduction to ARM processor and memory architecture (slides, code) Start with Baking Pi ( intro, ok01, ok02 ) and then read about ARM ASM. I also recommend you read Steven Wolfram's blog post Untangling the Tale of Ada Lovelace for a nice descption of Charles Babbage's and Lady Ada Lovelace's roles in developing the concept of a general-purpose computer.
Week 2 Jan 15
Lecture 3: ARM Assembly Language and Machine Code (screencast, slides, code) Read/Skim sections 4.1-4.5 from the ARM Instruction Set Architecture manual. Read Danny Cohen's article Holy Wars and a Plea for Peace on the history of littie-endian vs. big-endian.
Lab 1: Setup the Raspberry Pi
Assignment 1: Implement a Larson Scanner
Lecture 4 (Fri): From ASM to C slides, code Brush up on C syntax, data types, operators, control structure, and function calls. EssentialC chapters 1 and 2; or K&R 1, 2, and 3. Skip sections involving characters, strings, io, and standard libraries. Read about the history of C
Week 3 Jan 22
Lecture 5 (Mon): C: Pointers and Arrays EssentialC chapters 3 (skip material on structures) and 6 (skip material on the heap and memory management).; or K&R and 5.1-5.4. Make sure to read the sections involving characters and strings.
Lab 2: Below C Level
Assignment 2: Implementing a Clock
Lecture 6 (Fri): Functions Read (or read again) about functions in C (Chapter 4 in K&R, Section 4 in Essential C), Read this nice explanation of local data and frame pointers
Week 4 Jan 29
Lecture 7 (Mon): Communication and the Serial Protocol Read about characters and strings, basic IO (getc, putc, puts, printf), and structures (Section 1.5, 1.6, 1.9, 5.5, 6, 7 in K&R; Section 3 in EssentialC). Read about Serial Communication.
Lab 3: Debugging and Testing
Assignment 3: Strings and printf
Lecture 8 (Fri): Modules and Libraries: Linking Read David Welch's articles on baremetal programming and bss data.
Week 5 Feb 5
Lecture 9 (Mon): Memory Management
Lab 4: Linking and Loading
Assignment 4: Heap memory allocator
Lecture 10 (Fri): C mastery
Week 6 Feb 12
Lecture 11 (Mon): External Peripherals, SPI, PS/2, and PWM
Lab 5: Keyboard Surfin
Assignment 5: Reading the Keyboard
Lecture 12 (Fri): Graphics and the framebuffer Read more about the Framebuffer in the Baking Pi lectures (Screen01, Screen02, Screen03, Screen04).
Week 7 Feb 19
President's Day (no class)
Lab 6: Drawing into the Framebuffer
Assignment 6: Building a Graphics Library and Console
Lecture 13 (Fri): Interrupts
Week 8 Feb 26
Lecture 14 (Mon): Interrupts and Concurrency
Lab 7: Raspberry Pi, Interrupted
Assignment 7: Shell with Interrupts
Lecture 15 (Fri): Sensors
Week 9 Mar 5
Lecture 16 (Mon): Performance
Project Lab 1
(Fri): Guest Lecture
Week 10 Mar 12
Lecture 17 (Mon): To Linux and Beyond
Project Lab 2
Week 11 Mar 19
Fri 8:30-11:30 am: Final project demonstrations