Automatic Testing Arduino Software

Projects Programming
1

I have made some progress now on where I wanted to reroute the digitalRead, digitalWrite and pinMode functions. And it threatens to work :slight_smile:

Here you see the blink program with one include for a library. But instead of blinking it actually sends the output to the Serial in CSV format.
A normal program blink has only the AutoTest.h include to enable Autotesting. comment it out and you have the original program (still have to fixe something for the Serial though)

#include <AutoTest.h>

void setup()
{
	Serial.begin(9600);					// BAUDRATE
	pinMode(BLINK, OUTPUT);				// output pin 1
}
void loop()
{
	delay (1000);	// wait on second
	//
	// Read output, toggle it and Write output
	//
	digitalWrite(BLINK, !digitalRead(BLINK) );
}

AutoTest.h includes a file called testcases.h (might change this in the future). Sill a lot of fancy making to do on that one

/**
 * testcases.h
 *
 *  Created on	: 27 aug. 2013
 *  Author		: Nico Verduin
 *	Email		: info@verelec.com
 *  Website		: www.verelec.nl
 *
 *  Testcases.h contains all the testcases to be performed after startup
 *  All tescases are stored in PROGMEM to avoid using sRAM. Only the current case is always copied to SRAM.
 *
 * Revision Control
 * 
 * Latest Revsion
 * ____________________
 *
 * Revision	: $Revision$
 * Date	: $Date$
 * Author	: $Author$
 *
 */

#ifndef TESTCASES_H
#define TESTCASES_H
#include "Arduino.h"
#include <avr/pgmspace.h>

// ********************************************************************************************************
// to avoid stupid warning : warning: only initialized variables can be placed into program memory area
//

// Workaround for http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34734
#ifdef PROGMEM
#undef PROGMEM
#define PROGMEM __attribute__((section(".progmem.data")))
#endif

//
// end avoidance
// ********************************************************************************************************

/*
 * descriptions of pins
 * 2 column array where column 0  contains the pin number and column 1 contains the description
 * Actual input/output settings are determined at pinMode() function
 */

#define BLINK 5

struct pinDescription {
	byte	pin;			// pin as described on board
	char	description[11];	// name given to pin for output to CSV on serial. Max of 9 characters. Can be modified
};
//
// keep the pin descriptions local in DATA for now
//
static pinDescription pinDesc[] = {		{ 	3, "input 1"	},
 							{ 	4, "input 3"	},
 							{ 	BLINK, "Blink"	},
 							{ 255, "" }						// table terminator
};

/*
 * Actual testcases
 */
/*
 * description of a single testcase
 */
struct testCase {
	char 		  description[21];		// description of this testcase (max 20 characters)
	byte 		  pin[2];			// pin setting. Set only one pin per testcase as you are always reading one at a time.
							// also define only the number of input pins
	unsigned long delayTime;		// time to wait before this test case becomes active. 0 means it can execute straight away
};

//
// this test case has only 2 inputs. The order is determined by pinDesc
//
static testCase tc[] = {
		{"Input 1 pushed on   ",{ 1 ,  0} , 1000 },
		{"Input 1 released    " ,{ 0 ,  0} , 1000 },
		{"Input 2 pushed on   ",{ 0 ,  1} ,  500 },
		{"Input 2 released    " ,{ 0 ,  1} , 1500 }
};

#endif

and the serial output

Blink Read;0;999
Blink On;1;1000
Blink Read;1;2000
Blink Off;0;2000
Blink Read;0;3001
Blink On;1;3002
Blink Read;1;4002
Blink Off;0;4002
Blink Read;0;5003
Blink On;1;5004
Blink Read;1;6004
Blink Off;0;6004
Blink Read;0;7005
Blink On;1;7006
Blink Read;1;8006
Blink Off;0;8006

Although not fit for all applications this does make it possible to perform a number of predefined tests over and over again.
Probably unuseable for:

  • critical timing programs
  • programs already running on the board limits for SRAM and Program memory

Next steps:

  • Get the test sets executed
  • move the test sets to PROGMEM area and use only the current testcase in SRAM.
  • minimize variables to required size
  • Make it useable on more Arduino boards

Nice project to do :slight_smile: