triggers.bas File Reference

Example: start measurements in MM mode by triggers. More...

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

Include dependency graph for triggers.bas:

Go to the source code of this file.

Macros
#define	PIN   /* P8_07 */
	define the pin to use for digital trigger
#define	STP   /* 11 */
	define the step number to use for analog trigger

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).
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...
VAR	io = NEW PruIo
	Create a PruIo structure, wakeup subsystems.
VAR	gap = 2
	The gap between x values.
VAR	samp = S_W \ gap
	The number of samples to fetch.
VAR	mask = (1 SHL 5) + (1 SHL 8)
	Steps 5 & 8 active (AIN4, AIN7).
VAR	tmr = 1e6
	The sampling rate (1 kHz).
VAR	trg = 0
	The current trigger value.
VAR	trg1 = .Adc->mm_trg_pin(PIN)
	A GPIO trigger specification.
VAR	trg2 = .Adc->mm_trg_ain(STP, &h8000)
	An analog trigger specification.
VAR	trg3 = .Adc->mm_trg_pre(0, -&h8000, samp SHR 1)
	A pre-trigger specification.
VAR	lnr = IIF(S_H > 72, S_H SHR 3 - 8, 1)
	The menue line number.
VAR	max = .Adc->Samples - .Adc->ChAz
	The max. index for samples.
VAR	scale = S_H / 65520
	The factor to scale sample to screen pixels.
VAR	k = 0
	The keycode of user input.
VAR	fg = RGB(0, 0, 0)
	The foreground color.
VAR	bg = RGB(250, 250, 250)
	The background color.
VAR	i = c + .Adc->ChAz
	The samples index.
VAR	x = gap
	The x position at the screen.

Detailed Description

Example: start measurements in MM mode by triggers.

This file contains an example on how to use libpruio to measure analog input and draw a graph of the sampled data. Triggering of measurement can be done by different events. Find a functional description in section triggers.

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

Compile by: fbc -w all triggers.bas

Since

0.0

Definition in file triggers.bas.

Function Documentation

main()

int main

(

)

The main function.

Definition at line 147 of file triggers.bas.

Here is the call graph for this function:

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 52 of file triggers.bas.