Mikroelektronika d.o.o.
UT-L 7-Seg R Click Board
UT-L 7-Seg R Click Board
Regular price
£50.40
inc VAT
£42.00
exc VAT
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£50.40
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£42.00
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Add a double 7 segment display to your next project.
The UT-L 7-Seg R Click Board™ carries two SMD ultra-thin LED 7-SEG displays and the MAX6969 constant-current LED driver from Maxim Integrated. The Click Board™ is designed to run on either a 3.3V or 5V power supply. It communicates with the target microcontroller over the SPI interface.
Software Support
Code examples for the UT-L 7-Seg R Click Board™, written for MikroElektronika hardware and compilers are available on Libstock.
CODE SNIPPET
The following code snippet counts down from 99 to 0 on the displays of the UT-L 7-Seg R Click Board™.
01 sbit MAX6969_LE_PIN at RC2_bit;
02 sbit MAX6969_LE_PIN_Direction at TRISC2_bit;
03
04 uint16_t pwmPeriod;
05 static const uint8_t minus_char = 0x40;
06
07 void systemInit()
08 {
09 AD1PCFG = 0xFFFF;
10 MAX6969_LE_PIN_Direction = 0;
11 SPI3_Init();
12 pwmPeriod = PWM_Init(5000, 1, 1, 2);
13 PWM_Start(1);
14 PWM_Set_Duty(pwmPeriod/10, 1);
15
16 }
17
18 void MAX6969_Chip_Select()
19 {
20 MAX6969_LE_PIN = 1;
21 asm nop
22 asm nop
23 asm nop
24 MAX6969_LE_PIN = 0;
25 }
26
27 static void U7SEG_Write(uint8_t number)
28 {
29 char numbers[10] = {0x3F, 0x06, 0x5B, 0x4F, 0x66, 0x6D, 0x7D, 0x07, 0x7F, 0x6F};
30 uint8_t tens = number / 10;
31 uint8_t ones = number % 10;
32 if (number > 99) return;
33
34 SPI_Wr_Ptr(numbers[ones]);
35 SPI_Wr_Ptr(numbers[tens]);
36 }
37
38 void main()
39 {
40 uint8_t counter;
41
42 systemInit();
43 counter = 100;
44
45 while(counter--)
46 {
47 U7SEG_Write(counter);
48 MAX6969_Chip_Select();
49 Delay_ms(500);
50 }
51
52 SPI_Wr_Ptr(minus_char);
53 SPI_Wr_Ptr(minus_char);
54 MAX6969_Chip_Select();
55 }
UT-L 7-Seg R Click Board
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