Keyboard-DIY

How to do a keyboard yourself using ARM-Cortex-M4

Hardware Config

Tools used

Schematic

Software config

Arch

Features used

• Light Weight: The microcontroller can perform othe functions and not only focusing on reading keyboad.
• Buffered typing: user input is stored and sent so info is not lost.
• keys rollover SOLVED: no info is lost when users type fast and multiple keys are pressed.
• switch bouncing SOLVED: every key stroke is calculated not more not less.

Features Implementation

• Buffered typing: UART0 Interrupt with Software and Hardware FIFOs.
• Light Weight & keys rollover SOLVED: SysTick Interrupt.
• switch bouncing SOLVED: Edge triggered Interrupt at Port B.

Idea

Important