oszi.bas File Reference

Example: draw a graph of analog inputs. More...

#include "BBB/pruio.bi"
#include "fbgfx.bi"

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Functions
int	main ()

Variables
VAR	S_W = 0
	The screen width.
VAR	S_H = 0
	The srceen hight.
VAR	BPP = 0
	The bits per plain number.
VAR	full = fb.GFX_FULLSCREEN
	Fullscreen or windowed mode.
VAR	p = INSTR(COMMAND, "x")
	The position of the 'x' character (if any). More...
VAR	w = VALINT(COMMAND)
	The required window width.
VAR	h = VALINT(MID(COMMAND, p + 1))
	The required window hight.
UInt32	col [...]
	The colors for the lines (= channels). More...
UInt32	last [...]
	The previous data of the channels. More...
VAR	io = NEW PruIo
	Create a PruIo structure, wakeup subsystems.
VAR	scale = S_H / 65520
	The factor to scale values.
VAR	gap = 2
	The gap between x values.
VAR	fg = RGB(0, 0, 0)
	The foreground color.
VAR	bg = RGB(250, 250, 250)
	The background color.
VAR	k = ASC(INKEY())
	The key code.
VAR	m = .Conf->STEPENABLE
	The step mask.
VAR	neu = S_H - CUINT(.Value[i] * scale)
	The new sample.
VAR	j = i - 1
	The channel index.

Detailed Description

Example: draw a graph of analog inputs.

This file contains an example on how to use libpruio to continuously draw a graph of the sampled data from the analog input lines. Find a functional description in section oszi.

Licence: GPLv3, Copyright 2014-2023 by Thomas{ doT ]Freiherr[ At ]gmx[ DoT }net

Compile by: fbc -w all oszi.bas

Since

0.0

Definition in file oszi.bas.

Function Documentation

main()

int main

(

)

The main function.

Definition at line 134 of file oszi.bas.

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Variable Documentation

col

UInt32 col[...]

Initial value:

= { 
 
  , RGBA(255,   0,   0, 255) 
  , RGBA(  0, 255,   0, 255) 
  , RGBA(  0,   0, 255, 255) 
  , RGBA(255, 255,   0, 255) 
  , RGBA(255,   0, 255, 255) 
  , RGBA(  0, 255, 255, 255) 
  , RGBA(127, 127, 127, 255) 
    }

The colors for the lines (= channels).

Definition at line 45 of file oszi.bas.

last

UInt32 last[...]

Initial value:

= { 
    0 
  , 0 
  , 0 
  , 0 
  , 0 
  , 0 
  , 0 
  , 0 
    }

The previous data of the channels.

Definition at line 58 of file oszi.bas.

p

VAR p = INSTR(COMMAND, "x")

The position of the 'x' character (if any).

local pointer to the samples

Definition at line 27 of file oszi.bas.