Drummer 1.0

Contest 2009

Contest 2008

Drummer 1.0

Drummer is a drum computer application for the STM32 Primer2

Code size:	125k	Author:	klausr
Source files included:	yes	Version:	1.0
Use circleOS:	yes (1.7)	Creation date:	2009-06-26 10:15:50
Hardware modification:	no	Modification date:	2009-06-26 13:56:03
Based on the STM32 Primer:	Primer2

Downloads:	487	Views:	10124

Vote:		Average ratings:	0/5 (0 rates)

Download: Drummer-1.0.zip (550 KB)

Description:

This is Drummer, a drum-computer application for the STM32 Primer2.
It was programmed for the Contest 2009

Author: Klaus Rotter, klaus@rotters.de

Version: 1.0

Usage:
After startup, you'll see the drum grid and below the timeline/position of the song.
The actual bar is highlighted in green, the end bar ist indicated in red.
To save memory, the samples use 22,05 kHz/16 bit

Use a stylus to enter beats on the drum grid.

Button: play/stop

Joystick: (during playing)
left - jump to first bar
right - not used
up - speed increase
down - speed decrease

Joystick: (playing stopped)
left - bar left
right - bar right
up - increase bar number on timeline/position
down - decrease bar numer on timeline/position

Exit: Use stylus on lower right corner "EX"

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Project comments

Touchscreen improvement for Drummer application Please, log you to post a reply.

#1 2010-06-21 12:32:39

yrt
Administrator

Offline

Hi,

The touchscreen resolution has been improved with CircleOS v3.82. So the Drummer application is now usable.
The only things to do is to modify the file "application.c" in order to remove corrrection constants, and fix a little bug :

Old code :

Code:

 
        x = ((int) x*82/100);
        y = ((int) y*96/100);
    
        u16 gx = (x - xp-1)/xs;
        u16 gy = 7-(y - (yp-1))/ys;

New code :

Code:

        u16 gx = ((x - xp-1)/xs ) - 1;
        u16 gy = (7-(y - (yp-1))/ys) - 1;

How accurate is your primer2's touchscreen? Please, log you to post a reply.

#1 2009-07-01 19:42:57
klausr Member Offline	Hello, I want to know how accurate is the touchscreen of your primer2. The reason is, that I have some problems to enter the drum beats at the right place. I will dig into this as soon as there is some time left. We really need a better touch screen calibrartion for CircleOS 3.8! -Klaus

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