Mikroelektronika d.o.o. Click Board MIKROE-2269 BIG 7-SEG R Click Board™ - The Debug Store UK

BIG 7-SEG R Click Board

Vendor
MIKROE-2269: Mikroelektronika d.o.o.
Regular price: £23.94 inc. VAT

£19.95 exc. VAT
Sale price: £19.95V
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The BIG 7-Seg R Click Board™ is what you need if you want to add a seven-segment LED display to your project. This click features an SC10-21SRWA seven-segment display. Communication between the MCU and the SC10-21SRWA display is established via serial-IN, parallel-OUT shift register 74HC595 IC.

The BIG 7-Seg R Click Board™ runs on either 3.3V or 5V power supply and communicates with the target MCU over an SPI interface.

Product Description

The BIG 7-Seg R Click Board™ is what you need if you want to add a seven-segment LED display to your project. This Click Board™ features an SC10-21SRWA seven-segment display. Communication between the MCU and the SC10-21SRWA display is established via serial-IN, parallel-OUT shift register 74HC595 IC.

The BIG 7-Seg R Click Board™ runs on either 3.3V of 5V power supply and communicates with the target MCU over an SPI interface.

Display

The BIG 7-Seg R Click Board™ displays letters, numbers and symbols in highly readable form. It can be used in any simple interface and combined with other Click Board™s. The color of the displayed character is red, as the R in the name of the Click Board™ states.

Light Intensity

The light intensity on the display is controlled via the PWM pin on the board.

Applications

Adding a seven-segment LED display to your device with SPI interface.

SPECIFICATIONS

Type	7-segment,LED Segment
Applications	Adding a seven-segment LED display to your device with SPI interface
On-board modules	SC10-21SRWA seven-segment display, parallel-OUT shift register 74HC595 IC
Key Features	1.0 inch digit height, Standard: grey face, white segment, Low current operation
Interface	GPIO,PWM,SPI
Compatibility	mikroBUS
Click board size	L (57.15 x 25.4 mm)
Input Voltage	3.3V or 5V

PINOUT DIAGRAM

This table shows how the pinout on the BIG 7-Seg R Click Board™ 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	PWM	Display light intensity control
Master Reset for 74HC595	MR	2	RST	INT	15	NC
Latch for 74HC595	LAT	3	CS	TX	14	NC
Clock for 74HC595	CLK	4	SCK	RX	13	NC
Serial Data from 74HC595 to MCU	DSO	5	MISO	SCL	12	NC
Serial Data from MCU to 74HC595	DSI	6	MOSI	SDA	11	NC
Data line when interfaced with 3.3V MCU	3.3V	7	+3.3V	+5V	10	5V	Data line when interfaced with 5V MCU and also power supply pin for display and the whole click hardware
Ground	GND	8	GND	GND	9	GND	Ground

JUMPERS AND SETTINGS

Information about onboard jumpers:

Designator	Name	Default Position	Default Option	Description: describe the use + list all options with respective descriptions
JP1	Logic level	Left	3.3V	Logic Level Selection toward host mcu 3.3V/5V, left position 3.3V, right position 5V

Software Support

This demo is using the BIG 7-Seg R Click Board™ to display characters in an endless loop, with fixed time interval whilst changing its PWM duty.

Operating Voltage Range: 2.0 to 6.0 V
Operating Temperature: – 55 to 125 C

This example for STM32F107VC MCU ( EasyMx PRO v7 for ARM ), resets and initializes the BIG 7-Seg R Click Board™ takes characters from the static array and displays them while changing PWM duty cycle, all in an endless loop.

 1   extern char dig_array[MAX_CHARACTERS];
 2 
 3   // Variables
 4   unsigned short counter;
 5   unsigned int luminosity;
 6   unsigned int pwm_period;
 7   int8_t valid;
 8 
 9   char demo_array[20] =
10   { 'M', 'I', 'K', 'R', 'O',
11     'E', 'L', 'E', 'K', 'T', 'R', 'O', 'N', 'I', 'K', 'A',
12     '2', '0', '1', '6'
13   };
14 
15   void main() 
16   {
17    // MCU Init
18    GPIO_Digital_Output(&GPIOD_ODR, _GPIO_PINMASK_13);     // Set PORTD.B13 as digital input
19    GPIO_Digital_Output(&GPIOC_ODR, _GPIO_PINMASK_2);      // Set PORTC.B2 as digital output
20 
21    // SPI Init
22    SPI3_Init_Advanced( _SPI_FPCLK_DIV16, _SPI_MASTER | _SPI_8_BIT |
23   _SPI_CLK_IDLE_LOW | _SPI_FIRST_CLK_EDGE_TRANSITION |
24   _SPI_MSB_FIRST | _SPI_SS_DISABLE | _SPI_SSM_ENABLE |
25   _SPI_SSI_1, &_GPIO_MODULE_SPI3_PC10_11_12 );
26 
27    // PWM Init
28    pwm_period = PWM_TIM5_Init(5000);                      // PWM Init on 5kHz
29    PWM_TIM5_Set_Duty(100, _PWM_NON_INVERTED, _PWM_CHANNEL1);
30    PWM_TIM5_Start(_PWM_CHANNEL1, &_GPIO_MODULE_TIM5_CH1_PA0);
31 
32    // 74HC595 Init
33    HC595_LAT = 0;
34    HC595_RES = 0;
35    HC595_reset();
36 
37    // Init counter and segment luminosity
38    counter = 0;
39    luminosity = 0;
40 
41    // Endless loop
42    while (1)
43     {
44      valid = seg_7_display(demo_array[counter]);
45      PWM_TIM5_Set_Duty(100 + luminosity, _PWM_NON_INVERTED, _PWM_CHANNEL1);
46      delay_ms(750);
47      luminosity += 100;
48      counter++;
49      if (counter == 20)
50        counter = 0;     
51      if (luminosity == 4000)   
52        luminosity = 0;    
53     }
54   }

BIG 7-SEG R Click Board

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