16×12 G Click

16×12 G click carries a 16×12 LED display and the IS31FL3733 matrix driver. The click is designed to run on either 3.3V or 5V power supply. It communicates with the target microcontroller over I2C interface, and the following pins on the mikroBUS™ line: INT, RST, CS.

Each LED can be controlled individually – both for on/off control and light intensity.

IS31FL3733 driver features

The IS31FL3733 is a general purpose 12×16 LEDs matrix driver with 1/12 cycle rate.

Each of the 192 LEDs can be dimmed individually with 8-bit PWM data, which allows 256 steps of linear dimming.

The driver has selectable 3 Auto Breath Modes for each LED ( ABM-1, ABM-2, and ABM-3).

Specifications

Pinout diagram

This table shows how the pinout on 16×12 G click corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns).

Notes	Pin					Pin	Notes
	NC	1	AN	PWM	16	NC
Reset	RST	2	RST	INT	15	INT	Interrupt pin
Standby	SDB	3	CS	TX	14	NC
	NC	4	SCK	RX	13	NC
	NC	5	MISO	SCL	12	SCL	I2C clock
	NC	6	MOSI	SDA	11	SDA	I2C data
Power supply	+3.3V	7	3.3V	5V	10	+5V	Power supply
Ground	GND	8	GND	GND	9	GND	Ground

Jumpers and settings

Programming

Code examples for 16×12 G click, written for MikroElektronika hardware and compilers are available on Libstock.

Code snippet

The following code snippet shows the default initialization procedure for 16×12 G click board™.

01 IS31FL3733_init( &instance, _IS31FL3733_GND_ADDR, _IS31FL3733_GND_ADDR,
02                      I2C2_Start, I2C2_Stop, I2C2_Write, I2C2_Read );
03     IS31FL3733_setGCC( &instance, 64 );
04     // PWM control mode (default)
05     for( i = 0; i < _IS31FL3733_CS; ++i )
06     {
07         // Set PWM values for all LEDs at i-th row to 55/255 level.
08         IS31FL3733_setLEDPWM ( &instance, i, _IS31FL3733_SW, 55 );
09         // Turn on selected LEDs.
10         IS31FL3733_setLEDState ( &instance, i, _IS31FL3733_SW,
11                                  _IS31FL3733_LED_STATE_ON );
12     }
13     // Clear the matrix
14     IS31FL3733_clearMatrix( &instance );