Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

[SOLVED] LED Dot Matrix Board - Sure Electronic

Status
Not open for further replies.

infini8zx

Newbie level 2
Newbie level 2
Joined
Nov 4, 2012
Messages
2
Helped
1
Reputation
2
Reaction score
1
Trophy points
1,283
Visit site
Activity points
1,301
Hi all.

I am working on LED dot matrix produce by Sure Electronic which the board uses Holtek chip (HT1632). Does anyone know on how to develop program for this chip? Currently I am using PIC16F877A. I am not very familiar with PIC. I search for information on the net and most of them recommend SPI module.
Here is the code so far. I just want to light up any of the LED on the board. But it seems not working. I dont know whether the clock aint connect properly or due to program itself.


Code C - [expand]
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
unsigned char i;
char test[30] = "Hello world! World of hello." ;
void main() {
//  SPI_init();               // standard configuration
 
 
CMCON = 0x07;   // Disable comparators
ADCON1 = 0x0F;  // Disable Analog functions
 
                            //  instead of SPI_init, you can use SPI_init_Advanced as shown below
                            // SPI_init_Advanced(Master_OSC_div64, Data_SAMPLE_MIDDLE , CLK_Idle_HIGH , HIGH_2_LOW);
  TRISC &= 0xFD;
//  max7219_init1();          // initialize  max7219
//while (1){
Spi_Init_Advanced(MASTER_OSC_DIV64, DATA_SAMPLE_MIDDLE, CLK_IDLE_HIGH, HIGH_2_LOW);
  PORTC &= 0xFD;
  PORTC.f1 = 1;
  PORTC.f1 = 0;
  SPI_write(0b00000100);
//  Delay_ms(2);
  SPI_write(0b00000000);      //sys dis
//  Delay_ms(2);
  SPI_write(0b00000100);
//  Delay_ms(2);
  SPI_write(0b00100000);      //com option
//  Delay_ms(2);
  SPI_write(0b00000100);
//  Delay_ms(2);
  SPI_write(0b00011100);      //master mode
//  Delay_ms(2);
  SPI_write(0b00000100);
//  Delay_ms(2);
  SPI_write(0b00000001);      //sys on
//  Delay_ms(2);
  SPI_write(0b00000100);
//  Delay_ms(2);
  SPI_write(0b00000011);      //led on
//  Delay_ms(2);
  PORTC.f1 = 1;
  Delay_ms(2);
  PORTC.f1 = 0;
  SPI_write(0x02);
//  Delay_ms(2);
  SPI_write(0x80);
//  Delay_ms(2);
  SPI_write(0xFF);
  Delay_ms(1000);
  PORTC.f1 = 1;
}~!




Any hint or help will be much be appreciated. Thanks in advance.
 
Last edited:

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top