Example: fetch ADC samples in a ring buffer and save to file. More...

#include "BBB/pruio.bi"

Include dependency graph for rb_file.bas:

Functions
int	main ()

Variables
const	tSamp = 123401
	The number of samples in the files (per step).

const	tmr = 20000
	The sampling rate in ns (20000 -> 50 kHz).

const	NoStep = 3
	The number of active steps (must match setStep calls and mask).

const	NoFile = 2
	The number of files to write.

const	NamFil = "output."
	The output file names.

VAR	io = NEW PruIo()
	Create a PruIo structure, wakeup subsystems.

VAR	mask = &b111 SHL 9
	The active steps (9 to 11).

VAR	tInd = tSamp * NoStep
	The maximum total index.

VAR	half = ((.ESize SHR 2) \ NoStep) * NoStep
	The maximum index of the half ring buffer.

VAR	samp = (half SHL 1) \ NoStep
	The number of samples (per step).

VAR	p0 = .Adc->Value
	A pointer to the start of the ring buffer.

VAR	p1 = p0 + half
	A pointer to the middle of the ring buffer.

VAR	fnam = NamFil & n
	The file name.

VAR	fnr = FREEFILE
	The file number.

VAR	i = 0
	Start index.

VAR	rest = tInd + half - i
	The rest of the buffer (in bytes)

VAR	iEnd = IIF(p1 >= p0, rest, rest + half)
	The last byte of the rest.

Detailed Description

Example: fetch ADC samples in a ring buffer and save to file.

This file contains an example on how to use the ring buffer mode of libpruio. A fixed step mask of AIN-0, AIN-1 and AIN-2 get configured for maximum speed, sampled in to the ring buffer and from there saved as raw data to some files. Find a functional description in section rb_file.

Compile by: fbc -w all rb_file.bas

Since: 0.4.0

Definition in file rb_file.bas.

Function Documentation

◆ main()

int main ( )

The main function.

Definition at line 92 of file rb_file.bas.

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Functions

Variables

Detailed Description

Function Documentation

◆ main()