DALI

click

1. Introduction

DALI Click™ is an add-on board in mikroBUS ™ form factor. It’s a compact and easy solution for adding Digital Addressable Lighting

Interface (DALI) to your design. It features two optocouplers, push button and screw terminals.

DALI Click™ communicates with target board microcontroller via four mikroBUS™ lines (RST,

CS, PWM and INT) . The board is designed to use

3.3V and 5V power supply.

LED diode indicates the presence of power supply.

2. Soldering the headers

Before using your click board™, make sure to solder 1x8 male headers to both left and right side of the board. Two 1x8 male headers are included with the board in the package.

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2 3

Turn the board upside down so that bottom side is facing you upwards. Place shorter parts of the header pins in both soldering pad locations.

Turn the board upward again. Make sure to align the headers so that they are perpendicular to the board, then solder the pins carefully.

4. What is DALI?

DALI (Digital Addressable Lighting Interface) is international standard for network based systems that controls lighting in buildings.

Data between MCU and devices is transferred over two-wire differential bus by means of asynchronous, half-duplex, serial protocol.

It is possible to address up to 64 devices in

DALI stand alone systems and more than 64 devices as DALI subsystem (gateways)

3. Plugging the board in

Once you have soldered the headers your board is ready to be placed into desired mikroBUS™ socket. Make sure to align the cut in the lower-right part of the board with the markings on the silkscreen at the mikroBUS™ socket. If all of the pins are aligned correctly, push the board all the way into the socket.

click

BOARD

www.mikroe.com

DALI click Manual ver. 1.01

0 100000 022221

5. DALI Click™ Board Schematic

DALI

C1

220pF

R4

100

M1

BSP318S

R7

10K

R5

6K8

C2

10nF

Vdali

R2

10K

U1

TLP181

D1

BZX84C005.1

VCC

R3

1K2

DALI_TX DALI_TX

PHY_SEL

+3V3

AN

RST

CS

SCK

MISO

MOSI

+3.3V

GND

PWM

INT

TX

RX

SCL

SDA

+5V

GND

MIKROBUS DEVICE CONN.

+5V

ICP

INT

ICP

DALI_RX

INT

VCC

R1

1K0

LD1

YELLOW

J1

DALI_GND

R8

68K

Vdali

R9

4K7

U2

VCC

R10

10K

DALI_RX DALI

D2

Q2

BC856

R14

270K

R15

1K

DALI

Q3

BC846

DALI_GND

TLP181

T1

VCC

R16

10K

PHY_SEL

CN2

DALI

2

G1

MB2S

1

R13

100K

BAW56

DALI_GND

VCC

C4

100nF

R6

2K2

+3V3

+5V

LD2

GREEN

J2

R11

R12

10K

390

Q1

BC846

Vdali

6. SMD Jumpers

Target board microcontroller can receive a signal from DALI peripherals via interrupt pin

(INT) or input capture pin (PWM). Jumper J1 enables you to choose between these two ways. J1 is soldered in the INT position by default. There is one zero-ohm SMD jumper

J2 which is used to select between 3.3V or

5V power supply. Jumper J2 is soldered in the

3.3V position by default.

7. Code Examples

Once you have done all the necessary preparations, it’s time to get your click board up and running. We have provided the examples for mikroC, mikroBasic and mikroPascal compilers on our Libstock website. Just download them and you are ready to start.

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8. Support

MikroElektronika offers Free Tech Support

(www.mikroe.com/esupport) until the end of product lifetime, so if something goes wrong, we are ready and willing to help!

MikroElektronika assumes no responsibility or liability for any errors or inaccuracies that may appear in the present document.

Specification and information contained in the present schematic are subject to change at any time without notice. Copyright © 2012 MikroElektronika. All rights reserved.