Key.h File Reference

4-bit keyboard connected to PB19-PB16 More...

Go to the source code of this file.

Functions
void	Key_Init (void)
	Initialize keyboard. More...
uint32_t	Key_In (void)

Detailed Description

4-bit keyboard connected to PB19-PB16

Lab 5. Digital Piano using a Digital to Analog Converter
For more information see
https://docs.google.com/document/d/1DVmHjqsx24FvLp4x8KKyr5UmDeDlBlfeQPsVvKFQF_k/edit

Version

ECE319K Spring 2024

Author

Your names go here

Copyright

Lab solution, do not post,

Warning

AS-IS

Date

October 2, 2023

Pins on the 4-bit Keyboard

Pin	GPIO	Hardware
PB19	input	bit 3 (note with highest frequency)
PB18	input	bit 2
PB17	input	bit 1
PB16	input	bit 0 (note with lowest frequency)

Function Documentation

Key_In()

uint32_t Key_In

(

void

)

Input from piano key inputs on PB19-PB16

Parameters

none

Returns

0 to 15 depending on keys 0x01 is just Key0, 0x02 is just Key1, 0x04 is just Key2, 0x08 is just Key3

Key_Init()

void Key_Init

(

void

)

Initialize keyboard.

Initialize 4-bit keyboard

• Piano key 3 PB19 (note with highest frequency)
• Piano key 2 PB18
• Piano key 1 PB17
• Piano key 0 PB16 (note with lowest frequency)

  Parameters

  none

  Returns

  none

  Note

  LaunchPad_Init has been called; this program should not reset Port B