Embedded C Programming Study Repository

This repository is a collection of common embedded and system low-level programming questions which may come up in interviews. There are some test cases as well to help ensure everything works as expected!

Topics

• Double Linked List
• Circular Buffer
• Simple malloc
• Memory alligned malloc
• Sample RTOS sensor data collection
• Hash table
• Merge sort

How to use

Requirements

• Install CMake
• Install gcc

Building and Testing

1. In the root directory of the repository, run make build
2. To test, run make test
3. For detailed output, execute the full gtest binary cd build && ./test_collection

Example output

❯ make test
Running tests...
Test project /home/andy/dev/embedded_study/build
      Start  1: DoubleLinkedListTest.CreateList
 1/10 Test  #1: DoubleLinkedListTest.CreateList .....   Passed    0.00 sec
      Start  2: DoubleLinkedListTest.ReverseList
 2/10 Test  #2: DoubleLinkedListTest.ReverseList ....   Passed    0.00 sec
      Start  3: DoubleLinkedListTest.ReverseList2
 3/10 Test  #3: DoubleLinkedListTest.ReverseList2 ...   Passed    0.00 sec
      Start  4: CircularBuffer.testCreate
 4/10 Test  #4: CircularBuffer.testCreate ...........   Passed    0.00 sec
      Start  5: CircularBuffer.testDestroy
 5/10 Test  #5: CircularBuffer.testDestroy ..........   Passed    0.00 sec
      Start  6: CircularBuffer.testWriteSingle
 6/10 Test  #6: CircularBuffer.testWriteSingle ......   Passed    0.00 sec
      Start  7: CircularBuffer.testWriteDouble
 7/10 Test  #7: CircularBuffer.testWriteDouble ......   Passed    0.00 sec
      Start  8: CircularBuffer.testWrite
 8/10 Test  #8: CircularBuffer.testWrite ............   Passed    0.00 sec
      Start  9: CircularBuffer.testReset
 9/10 Test  #9: CircularBuffer.testReset ............   Passed    0.00 sec
      Start 10: CircularBuffer.testOverflow
10/10 Test #10: CircularBuffer.testOverflow .........   Passed    0.00 sec

100% tests passed, 0 tests failed out of 10

Total Test time (real) =   0.02 sec