Embedded C8051

Embedded System's course project with a 8-bit C8051F020-DK board connected to a custom board via I²C protocol.

Requirements

Notice: Unfortunately the compiler is proprietary and the free limited version is walled behind a registration form, so good luck getting it.

Silicon Labs IDE
Keil® PK51 Developer’s Kit - contains the 8051's C compliler, linker and assembler.
C8051F020-DK board
Custom board built in-house at UniMiB, connected to the C0 port via I²C protocol, with the following components:
- MMA7660 accelerometer
- LM76 thermometer
- MCCOG21605B6 display

Inclination sampling on the 3 axis form the accelerometer every 100ms
- Last 8 samples stored in a buffer
Temperature sampling every 1000ms
Display udpated every 300ms showing:
- 3-axis inclination (signals smoothed calculating the mean of the buffered samples)
- Temperature
Depending on how the P3.7 button is pressed it is possible to:
- Quick press: display backlight on/off
- Long press (more than 1s): backlight regulation mode; the display brightness starts to "breathe" until the pressure on the button is released

Two media found searching trough old personal photos:


Photo of the two boards attached, early in development

final_build.mp4

Short animation of one of the latest builds