Arduino DALI library for Cosino MEGA 2560

Multi bus DALI master based on a Cosino Mega 2560 board.

This device con control 2 DALI busses.

Prerequisites

To compile the code you need some packages on your Cosino Mega 2560 board and you can use the following command line to install them:

# aptitude install arduino scons make git-core

Then you need the file mega2560.sh to upload your HEX file into the Mega 2560 CPU. It can be downloaded from the URL https://github.com/cosino/cosino.github.io/blob/master/data/extensions/mega_2560/mega2560.sh.

Doing a simple program

An example program can be found in Dali_sketch/Dali_sketch.pde. The code is reported below:

#include <Dali.h>

/*
 * Objects
 */
 
Dali dali0, dali1;

/*
 * Setup
 */
 
void setup()
{
	delay(500);
	Serial.begin(115200);
	
	delay(500);
	Serial.println("DALI testing program - ver. 1.00");
	Serial.println("Cosino Mega 2560 extension");
	Serial.println("Luca Zulberti <[email protected]>");
	
	delay(500);
	dali0.begin(18, 10);	/* Overwrite OC1A and OC1B */
	dali1.begin(A14, A15);	/* Overwrite ADCch 14 and 15 */
}

/*
 * Loop
 */

void loop()
{
	serialDali();
}

As a normal Arduino projects, you can compile and load the sketch into the Mega 2560 CPU with few commands.

From the Cosino Mega 2560 console enter into the main folder and then use the commands below:

# cd Dali_sketch
# make
scons -f ../SConstruct ARDUINO_BOARD=mega2560 \
            EXTRA_LIB=../lib/ -Q
maximum size for hex file: 258048 bytes
scons: building associated VariantDir targets: build
[ ... ]
avr-size --target=ihex Dali_sketch.hex
text    data     bss     dec     hex filename
   0   13028       0   13028    32e4 Dali_sketch.hex

Then use the mega2560.sh to load the HEX file as follow (I supposed you installed the program under the /opt directory):

# /opt/mega2560.sh prog Dali_sketch.hex
avrdude: AVR device initialized and ready to accept instructions

Reading | ################################################## | 100% 0.01s

avrdude: Device signature = 0x1e9801
avrdude: NOTE: FLASH memory has been specified, an erase cycle will be performed
         To disable this feature, specify the -D option.
avrdude: erasing chip
avrdude: reading input file "Dali_sketch.hex"
avrdude: input file Dali_sketch.hex auto detected as Intel Hex
avrdude: writing flash (13028 bytes):

Writing | ################################################## | 100% 1.73s

avrdude: 13028 bytes of flash written

avrdude: safemode: Fuses OK

avrdude done.  Thank you.

Test the simple program

To test the program you can use the screen program (use the usual aptitude command to install it).

screen /dev/ttyS3 115200

In the screen type:

d1000*(CTRL+j)*

This command will turn ON the light at the address 0x00 on bus 0 (see the documentation file protocol.txt).

To turn OFF the device, type:

d0000*(CTRL+j)*

Documentation files

• dali.txt: hardware and dali commands specs.

• protocol.txt: the serial protocol to use the library.