SCE5784
Připojení k Arduinu
| Pin SCE5782 | Název pinu SCE5782 | Pin Arduino |
|---|---|---|
| 1 | CLKSEL | – |
| 2 | Vcc | 5V |
| 3 | Vll | 5V |
| 11 | LOAD | D2 |
| 12 | GND | GND |
| 13 | GND | GND |
| 14 | Serial DATA | D3 |
| 15 | NC | – |
| 16 | Serial CLK | D4 |
| 24 | RESET | D5 |
| 25 | CLK I/O | – |
| 26 | NC | – |
Zdrojový kód pro Arduino
// sketch: http://blog.smue.org/archives/433-DBOX1-SDA5708-display-+-arduino.html
// adapted sketch by niq_ro: http://arduinotehniq.blogspot.com/
#include "font.h"
int wait = 0;
const int LOAD = 2;
const int DATA = 3;
const int SDCLK = 4;
const int RESET = 5;
char msg[] = " SCE5782 DEMO";
void setup() {
pinMode(DATA, OUTPUT);
pinMode(LOAD, OUTPUT);
pinMode(SDCLK, OUTPUT);
pinMode(RESET, OUTPUT);
init_SDA5782();
brightness_SDA5782(3); //(0 = MAX, 7 = OFF)
}
void loop() {
for (byte i = 0; i < (sizeof(msg) / sizeof(char)); i++) {
for (byte j = 0; j < 8; j++) {
if (i + j < (sizeof(msg) / sizeof(char))) {
digit_to_SDA5782(msg[i + j], j );
} else {
digit_to_SDA5782(" ", j );
}
}
delay(300);
}
}
void init_SDA5782(void)
{
digitalWrite(LOAD, HIGH);
digitalWrite(RESET, LOW);
digitalWrite(RESET, HIGH);
}
void digit_to_SDA5782(uint8_t sign, uint8_t digit)
{
uint8_t i;
if ((sign < 0x20) || (sign > 0x7b)) sign = 0x20;
if (digit > 7) digit = 0;
send_byte_to_SDA5782(0b10100000 | digit);
for (i = 0; i < 7; i++) {
send_byte_to_SDA5782(pgm_read_byte(&font[(sign - 0x20) * 7 + i]) / 8);
}
}
void send_byte_to_SDA5782(uint8_t byte)
{
uint8_t x;
digitalWrite(LOAD, LOW);
for (x = 0; x <= 7; x++) {
if ((byte >> x) & 1) {
digitalWrite(DATA, HIGH);
} else {
digitalWrite(DATA, LOW);
}
digitalWrite(SDCLK, HIGH);
digitalWrite(SDCLK, LOW);
}
digitalWrite(LOAD, HIGH);
}
void brightness_SDA5782(uint8_t val)
{
send_byte_to_SDA5782(0b11100000 | (val & 0b00000111));
}