本次实验使用Arduino 控制器直接驱动一个单色的8*8点阵,所用点阵型号为LD-1088BS,如下图:
[attach]452[/attach][attach]449[/attach]
/*
* Show messages on an 8x8 led matrix,
* scrolling from right to left.
*
* Uses FrequencyTimer2 library to
* constantly run an interrupt routine
* at a specified frequency. This
* refreshes the display without the
* main loop having to do anything.
*
*/
#include <FrequencyTimer2.h>
#define SPACE { \
{0, 0, 0, 0, 0, 0, 0, 0}, \
{0, 0, 0, 0, 0, 0, 0, 0}, \
{0, 0, 0, 0, 0, 0, 0, 0}, \
{0, 0, 0, 0, 0, 0, 0, 0}, \
{0, 0, 0, 0, 0, 0, 0, 0}, \
{0, 0, 0, 0, 0, 0, 0, 0}, \
{0, 0, 0, 0, 0, 0, 0, 0}, \
{0, 0, 0, 0, 0, 0, 0, 0} \
}
#define H { \
{0, 1, 0, 0, 0, 0, 1, 0}, \
{0, 1, 0, 0, 0, 0, 1, 0}, \
{0, 1, 0, 0, 0, 0, 1, 0}, \
{0, 1, 1, 1, 1, 1, 1, 0}, \
{0, 1, 0, 0, 0, 0, 1, 0}, \
{0, 1, 0, 0, 0, 0, 1, 0}, \
{0, 1, 0, 0, 0, 0, 1, 0}, \
{0, 1, 0, 0, 0, 0, 1, 0} \
}
#define E { \
{0, 1, 1, 1, 1, 1, 1, 0}, \
{0, 1, 0, 0, 0, 0, 0, 0}, \
{0, 1, 0, 0, 0, 0, 0, 0}, \
{0, 1, 1, 1, 1, 1, 1, 0}, \
{0, 1, 0, 0, 0, 0, 0, 0}, \
{0, 1, 0, 0, 0, 0, 0, 0}, \
{0, 1, 0, 0, 0, 0, 0, 0}, \
{0, 1, 1, 1, 1, 1, 1, 0} \
}
#define L { \
{0, 1, 0, 0, 0, 0, 0, 0}, \
{0, 1, 0, 0, 0, 0, 0, 0}, \
{0, 1, 0, 0, 0, 0, 0, 0}, \
{0, 1, 0, 0, 0, 0, 0, 0}, \
{0, 1, 0, 0, 0, 0, 0, 0}, \
{0, 1, 0, 0, 0, 0, 0, 0}, \
{0, 1, 0, 0, 0, 0, 0, 0}, \
{0, 1, 1, 1, 1, 1, 1, 0} \
}
#define O { \
{0, 0, 0, 1, 1, 0, 0, 0}, \
{0, 0, 1, 0, 0, 1, 0, 0}, \
{0, 1, 0, 0, 0, 0, 1, 0}, \
{0, 1, 0, 0, 0, 0, 1, 0}, \
{0, 1, 0, 0, 0, 0, 1, 0}, \
{0, 1, 0, 0, 0, 0, 1, 0}, \
{0, 0, 1, 0, 0, 1, 0, 0}, \
{0, 0, 0, 1, 1, 0, 0, 0} \
}
byte col = 0;
byte leds[8][8];
// pin[xx] on led matrix connected to nn on Arduino (-1 is dummy to make array start at pos 1)
int pins[17]= {-1, 5, 4, 3, 2, 14, 15, 16, 17,13, 12, 11, 10, 9, 8, 7, 6, };
// col[xx] of leds = pin yy on led matrix
int rows[8] = {pins[16], pins[15], pins[11], pins[6], pins[10], pins[4], pins[3], pins[13]};
// row[xx] of leds = pin yy on led matrix
int cols[8] = {pins[9], pins[14], pins[8], pins[12], pins[1], pins[7], pins[2], pins[5]};
const int numPatterns = 6;
byte patterns[numPatterns][8][8] = {
H,E,L,L,O,SPACE
};
int pattern = 0;
void setup() {
// sets the pins as output
for (int i = 1; i <= 16; i++) {
pinMode(pins, OUTPUT);
}
// set up cols and rows
for (int i = 1; i <= 8; i++) {
digitalWrite(cols[i - 1], LOW);
}
for (int i = 1; i <= 8; i++) {
digitalWrite(rows[i - 1], LOW);
}
clearLeds();
// Turn off toggling of pin 11
FrequencyTimer2::disable();
// Set refresh rate (interrupt timeout period)
FrequencyTimer2::setPeriod(2000);
// Set interrupt routine to be called
FrequencyTimer2::setOnOverflow(display);
setPattern(pattern);
}
void loop() {
pattern = ++pattern % numPatterns;
slidePattern(pattern, 60);
}
void clearLeds() {
// Clear display array
for (int i = 0; i < 8; i++) {
for (int j = 0; j < 8; j++) {
leds[j] = 0;
}
}
}
void setPattern(int pattern) {
for (int i = 0; i < 8; i++) {
for (int j = 0; j < 8; j++) {
leds[j] = patterns[pattern][j];
}
}
}
void slidePattern(int pattern, int del) {
for (int l = 0; l < 8; l++) {
for (int i = 0; i < 7; i++) {
for (int j = 0; j < 8; j++) {
leds[j] = leds[j][i+1];
}
}
for (int j = 0; j < 8; j++) {
leds[j][7] = patterns[pattern][j][0 + l];
}
delay(del);
}
}
// Interrupt routine
void display() {
digitalWrite(cols[col], LOW); // Turn whole previous column off
col++;
if (col == 8) {
col = 0;
}
for (int row = 0; row < 8; row++) {
if (leds[col][7 - row] == 1) {
digitalWrite(rows[row], LOW); // Turn on this led
}
else {
digitalWrite(rows[row], HIGH); // Turn off this led
}
}
digitalWrite(cols[col], HIGH); // Turn whole column on at once (for equal lighting times)
}
Arduino直接驱动8*8点阵占用的I/O口太多,所以建议大家使用芯片驱动8*8点阵,例如74HC595或者MAX7129芯片!!
下面也为大家提供一些IC资料,有兴趣的可以研究研究~~
74HC595中文资料:[attach]492[/attach]zjjdog3 发表于 2014-9-18 22:28
求问我这个反面5根针的怎么插? 有例程吗?
AllBlue 发表于 2014-9-19 18:02
根据你的程序来接线:
xirunamd 发表于 2015-4-13 22:35
怎么弄啊,能不能详细点
#include <FrequencyTimer2.h>
#define NOP() do { __asm__ __volatile__ ("nop"); } while (0)
#define _countof(a) (sizeof(a) / sizeof(a[0]))
class HC595LED
{
public:
HC595LED(int ser, int rck, int srck)
{
_SER = ser;
_RCK = rck;
_SRCK = srck;
}
void begin()
{
pinMode(_SER, OUTPUT);
pinMode(_RCK, OUTPUT);
pinMode(_SRCK, OUTPUT);
digitalWrite(_SER, LOW);
digitalWrite(_RCK, LOW);
digitalWrite(_SRCK, LOW);
}
void displayRow(uint8_t nRow, uint8_t data)
{
nRow = 7 - nRow;
for(int i = 0; i < 8; i++)
_rowEnable(i == nRow);
for(int i = 7; i >= 0; i--) {
_colEnable(bitRead(data, i));
}
flushScreen();
}
void clear()
{
for(int i = 0; i < 8; i++)
_rowEnable(false);
for(int i = 0; i < 8; i++)
_colEnable(false);
}
void writeItem(bool bHigh)
{
digitalWrite(_SER, bHigh ? HIGH : LOW);
_flushItem();
}
void flushScreen()
{
digitalWrite(_RCK, HIGH);
NOP();
NOP();
digitalWrite(_RCK, LOW);
}
private:
void _rowEnable(bool bEnable)
{
writeItem(!bEnable);
}
void _colEnable(bool bEnable)
{
writeItem(bEnable);
}
void _flushItem()
{
digitalWrite(_SRCK, HIGH);
NOP();
NOP();
digitalWrite(_SRCK, LOW);
}
private:
int _SER;
int _RCK;
int _SRCK;
};
///////////////////////////////////////////////////////////////////////
//Pin connected to DS of 74HC595
const int SER_PIN = 8;
//Pin connected to ST_CP of 74HC595
const int RCK_PIN = 9;
//Pin connected to SH_CP of 74HC595
const int SRCK_PIN = 10;
HC595LED led(SER_PIN, RCK_PIN, SRCK_PIN);
PROGMEM const char SPACE[] =
{
0b00000000,
0b00000000,
0b00000000,
0b00000000,
0b00000000,
0b00000000,
0b00000000,
0b00000000,
};
PROGMEM const char H[] =
{
0b01000010,
0b01000010,
0b01000010,
0b01111110,
0b01000010,
0b01000010,
0b01000010,
0b01000010,
};
PROGMEM const char E[] =
{
0b01111110,
0b01000000,
0b01000000,
0b01111110,
0b01000000,
0b01000000,
0b01000000,
0b01111110,
};
PROGMEM const char L[] =
{
0b01000000,
0b01000000,
0b01000000,
0b01000000,
0b01000000,
0b01000000,
0b01000000,
0b01111110,
};
PROGMEM const char O[] =
{
0b00011000,
0b00100100,
0b01000010,
0b01000010,
0b01000010,
0b01000010,
0b00100100,
0b00011000,
};
const char * const arrShowData[] = {H, E, L, L, O, SPACE};
char arrShowBuffer[] =
{
0, 0, 0, 0, 0, 0, 0, 0,
};
void display()
{
static int s_nIndex = 0;
led.displayRow(s_nIndex, arrShowBuffer[s_nIndex]);
s_nIndex++;
s_nIndex %= 8;
}
void setup()
{
led.begin();
Serial.begin(9600);
delay(1000);
led.clear();
FrequencyTimer2::disable();
FrequencyTimer2::setPeriod(2000);
FrequencyTimer2::setOnOverflow(display);
}
void loop()
{
int s_nIndex = 0;
while(true) {
noInterrupts();
memcpy_PF(arrShowBuffer, (uint_farptr_t)arrShowData[s_nIndex], sizeof(arrShowBuffer));
interrupts();
s_nIndex++;
s_nIndex %= _countof(arrShowData);
delay(2000);
}
}
anjiao 发表于 2015-7-22 02:23
我补一个驱动5针LED的例子
[mw_shl_code=cpp,true]#include
AllBlue 发表于 2013-8-20 08:40
???哪里请指出谢谢~
a1220529673 发表于 2015-12-11 09:48
全亮了,求破。。。。。
74865132` 发表于 2016-6-11 23:08
为什么我仿真显示不出来,是缺少库文件还是没设置好[/img]
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