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https://github.com/minhoryang/minho-embeddedsystem-hw1-fpga-ipc

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Host: GitHub
URL: https://github.com/minhoryang/minho-embeddedsystem-hw1-fpga-ipc
Owner: minhoryang
Created: 2014-04-13T13:08:20.000Z (over 10 years ago)
Default Branch: master
Last Pushed: 2014-04-19T14:00:47.000Z (over 10 years ago)
Last Synced: 2023-07-05T15:03:21.382Z (over 1 year ago)
Language: C
Size: 418 KB
Stars: 0
Watchers: 1
Forks: 1
Open Issues: 0
Metadata Files:
- Readme: README.md

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README

# Embedded 1st HW `Calculator on Board with IPC`
*20091631 Minho Ryang*

## Target
- **ARM Cortex-A9 Dual Core** ([ACHRO 4210 Exynos (Samsung)](http:/huins.com/en/m12.php?m=rd&no=100), Spartan 6 FPGA)
- ARM **Cross-compiler**
- at least, 3 Processes (use `fork()`)
- at least, use IPC between Processes. (`shared-memory, message queue, pipe, ...`)
- control the `GPIO, FPGA, ...` devices by `kernel-module, mmap(), ...`
- at least, 2 Features (fully explained at [HW1.pdf](http://dcclab.sogang.ac.kr/?module=file&act=procFileDownload&file_srl=1554&sid=777df414f46f23cb456298f7c2c27506))
- STOP WATCH
- TEXT EDITOR
- extra feature to more points...
+ decided by myself, I'll consider these:
+ Good **Architecture**
+ Good **Readability**
+ Good **Reusability**
+ **Modular Programming**
+ Using [**github**](http://github.com/minhoryang/Minho-EmbeddedSystem-HW1-FPGA-IPC).
+ **Markdown Document** (this)
+ **Work without the device**.
+ it means, Isolate the device related code.
+ Exhibit my skill (Professor want it.)

## Coverage & Contents
### Coverage
- Process Management.
- IPC Management.
- Device Control for I/O
- 2 Features

### Contents
- Process Management :
- using **fork()** for creation
- using **SIGNAL** for extinction
- IPC Management :
- using **Message Queue**
- selected for **Non-blocking I/O**
- Device Control for I/O
- I/O **Mock up**
- **Isolation from the physical devices**
- 2 Features
- just followed the detail usages & implement instructions @ [HW1.pdf](http://dcclab.sogang.ac.kr/?module=file&act=procFileDownload&file_srl=1554&sid=777df414f46f23cb456298f7c2c27506)
- Isolation between the features.

## Project Timeline & Approach Method
### Project Timeline
- Deadline @ 2014-04-16 23:59
- Started to think @ 2014-03-31.
- First Design Draft @ 2014-04-10.
- Hand out @ 2014-04-16.

### Approach Method
- **Bottom up**
- I don't have much time
- To increase Productivity, **Minimize the time to use physical device**
- 1 commit == 1 feature.

## Results
- How to Build
- `$ make` (By default, it run `make arm build`)
- `$ make {arm|intel} {build|tests}`
- Select Compiler: arm, intel
- Select Build Result Set: build, tests.
- You can get the binary at
- `built/20091631.out`

### Modules Diagram
- core/
- `msgq`
- `fork`
- `bitmap`
- `gameloop`
- modules/
- `inputdev`
- `outputdev`
- `process`
- `stop_watch`
- `text_editor`

### Considerations
- Non-Blocking I/O
- Thread safety
- including Data structures or Algorithms.

### Test & Assurance Method
- tried to develop as TestDrivenDevelopment.

## etc
- Feeling?
- I need more time to do it...
- Rooms for Development:
- Add more testcases
- Resolve all TODO comments
- Add TextFile-based Input/Output module (for testing)
- Add Terminal-based Input/Output module (with `ncurses library`).
- Increase FPS Accuracy.