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SmartHaretaDisplayDemo.ino
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SmartHaretaDisplayDemo.ino
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/**
* SmartHareta Dot-matrix LED demo program v0.01
*/
#include <Wire.h>
#define FB_SIZE_X 24
#define FB_SIZE_Y 24
static uint8_t framebuffer[FB_SIZE_X * FB_SIZE_Y / 8];
static const uint8_t characters[4][32] =
{
{
0xff, 0xff, 0xfc, 0x1f, 0xe3, 0xe3, 0xdf, 0xfb, 0xdf, 0xfd, 0xbf, 0xad,
0x7f, 0xae, 0x7f, 0xae, 0x7e, 0xfa, 0x7f, 0xfe, 0xb7, 0xda, 0xc7, 0xf9,
0xe3, 0xf3, 0xdc, 0x0d, 0xbe, 0x3e, 0xc1, 0x81
},
{
0xff, 0xff, 0xf8, 0x3f, 0xe7, 0xcf, 0xdf, 0xf7, 0xdf, 0xfb, 0xbf, 0xeb,
0xbd, 0xeb, 0xbe, 0xab, 0xbe, 0xfb, 0xbd, 0xeb, 0x03, 0xfb, 0x6f, 0xf7,
0x77, 0xe3, 0x70, 0x1d, 0x8f, 0xbd, 0xff, 0xc3
},
{
0xff, 0xff, 0xfe, 0x3f, 0xf1, 0xc7, 0xcf, 0xf7, 0xbf, 0xfb, 0xbf, 0xa9,
0x7f, 0xaa, 0x7f, 0xaa, 0x6e, 0xfa, 0x6f, 0xda, 0x8f, 0xf9, 0xc7, 0xf7,
0xd8, 0x0f, 0xef, 0xaf, 0xf0, 0x5f, 0xff, 0xff
},
{
0xff, 0xff, 0xf8, 0x1f, 0xe7, 0xef, 0xdf, 0xf1, 0x87, 0xfa, 0x7f, 0x5a,
0x7f, 0x5a, 0x7f, 0x5a, 0x7d, 0xf1, 0xbf, 0xbb, 0x3f, 0xf5, 0x5f, 0xf5,
0x63, 0x8d, 0xb8, 0x3b, 0xdd, 0xc7, 0xe3, 0xff
}
};
void bitBlt(const uint8_t* pix, int ox, int oy, size_t sx, size_t sy)
{
int x, y;
for (y = 0; y < sy; y++) {
for (x = 0; x < sx; x++) {
if (pix[(y * (sx / 8)) + (x / 8)] & (1 << (7 - (x % 8)))) {
} else {
setPoint(ox + x, oy + y);
}
}
}
}
void setPoint(int x, int y)
{
if ((x < 0) || (y < 0) || (x >= FB_SIZE_X) || (y >= FB_SIZE_Y)) {
return;
}
// Process as x and y switched
framebuffer[x * 3 + (2 - (y / 8))] |= 1 << (y % 8);
}
void unsetPoint(int x, int y)
{
if ((x < 0) || (y < 0) || (x >= FB_SIZE_X) || (y >= FB_SIZE_Y)) {
return;
}
// Process as x and y switched
framebuffer[x * 3 + y / 8] &= ~(1 << (y % 8));
}
void clear(int color)
{
memset(framebuffer, color ? 0xff : 0x00, sizeof(framebuffer));
}
static void updateDriver(uint8_t addr, uint8_t* b)
{
Wire.beginTransmission(addr);
Wire.write(0x00);
for (int i = 0; i < 8; i++) {
Wire.write(*(b + i));
Wire.write(*(b + i + 8));
}
Wire.endTransmission();
}
void updateLed(void)
{
int y;
uint8_t buff[16];
#if 1 // for invert image(trial)
for (y = 0; y < sizeof(framebuffer); y++) {
framebuffer[y] = ~framebuffer[y];
}
#endif
for (y = 0; y < 16; y++) {
buff[y] = framebuffer[y * 3];
}
updateDriver(0x72, buff);
for (y = 0; y < 16; y++) {
buff[y] = framebuffer[y * 3 + 1];
}
updateDriver(0x71, buff);
for (y = 0; y < 16; y++) {
buff[y] = framebuffer[y * 3 + 2];
}
updateDriver(0x70, buff);
for (y = 0; y < 8; y++) {
buff[y] = framebuffer[3 * 16 + y * 3 + 1];
buff[y + 8] = framebuffer[3 * 16 + y * 3 + 1 + 1];
}
updateDriver(0x73, buff);
for (y = 0; y < 8; y++) {
buff[y] = framebuffer[3 * 16 + y * 3];
}
updateDriver(0x74, buff);
}
void setupDriver(void)
{
uint8_t a;
for (a = 0x70; a <= 0x74; a++) {
initializeLedDriver(a);
}
}
static void initializeLedDriver(uint8_t addr)
{
/**
System Setup Register : Turn on system oscillator
*/
Wire.beginTransmission(addr);
Wire.write(0x21);
Wire.endTransmission();
/**
Display Setup Register
*/
Wire.beginTransmission(addr);
Wire.write(0x81);
Wire.endTransmission();
/**
Digital Dimming Data Input (LED Duty configuration)
*/
{
uint8_t brightness = 10; /* 0 - 15 */
Wire.beginTransmission(addr);
Wire.write(0xe0 | brightness);
Wire.endTransmission();
}
}
/**************************************************************************/
void setup()
{
Wire.begin(25, 26);
Wire.setClock(200000L);
setupDriver();
clear(0);
updateLed();
}
void draw_floor(int c)
{
int x, y;
int s = 0;
for (x = 0; x < 24; x++) {
if (((c + s) % 4) == 0) {
y = 20;
} else {
y = 21;
}
s++;
setPoint(x, y);
}
}
void demo(void)
{
int32_t counter;
const int motion[] = { 1, 2, 3, 2 };
int motion_no = 0;
int current_motion = 0;
counter = 0;
clear(0);
draw_floor(counter);
bitBlt(characters[0], 4, 4, 16, 16);
delay(1000);
while (1) {
clear(0);
draw_floor(counter / 4);
if ((counter % 10) == 0) {
current_motion = motion_no % (sizeof(motion) / sizeof(motion[0]));
motion_no++;
}
bitBlt(characters[motion[current_motion]], 4, 4, 16, 16);
updateLed();
delay(16);
counter++;
}
}
void loop() {
clear(0);
updateLed();
demo();
}