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November 26, 2012 12:44
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Arduino + ЖКИ МЭЛТ МТ10Т7-7
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/* Example: MELT MT10T7-7 LCD display, directly connected to Arduino. | |
* Display datasheet: http://www.melt.com.ru/docs/MT-10T7_8_9.pdf | |
*/ | |
// Other pins: GND to GND; +E to 5V; V0, +L and -L are not necessary for example purposes. | |
#define PIN_WR1 3 | |
#define PIN_WR2 2 | |
#define PIN_A0 13 | |
#define PIN_DB0 9 | |
#define PIN_DB1 10 | |
#define PIN_DB2 11 | |
#define PIN_DB3 12 | |
#define SEG_A 8 | |
#define SEG_B 32 | |
#define SEG_C 64 | |
#define SEG_D 4 | |
#define SEG_E 2 | |
#define SEG_F 128 | |
#define SEG_G 1 | |
#define SEG_H 16 | |
void setup() { | |
pinMode(PIN_A0, OUTPUT); | |
pinMode(PIN_WR1, OUTPUT); | |
pinMode(PIN_WR2, OUTPUT); | |
pinMode(PIN_DB0, OUTPUT); | |
pinMode(PIN_DB1, OUTPUT); | |
pinMode(PIN_DB2, OUTPUT); | |
pinMode(PIN_DB3, OUTPUT); | |
digitalWrite(PIN_WR1, LOW); | |
digitalWrite(PIN_WR2, LOW); | |
} | |
void _write_dbs(byte nibble) { | |
digitalWrite(PIN_DB0, nibble & 1 ? HIGH : LOW); | |
digitalWrite(PIN_DB1, nibble & 2 ? HIGH : LOW); | |
digitalWrite(PIN_DB2, nibble & 4 ? HIGH : LOW); | |
digitalWrite(PIN_DB3, nibble & 8 ? HIGH : LOW); | |
} | |
void _write_wr() { | |
digitalWrite(PIN_WR2, LOW); | |
digitalWrite(PIN_WR1, HIGH); | |
delayMicroseconds(5); | |
digitalWrite(PIN_WR1, LOW); | |
} | |
void write_lcd_raw(byte addr, byte data) { | |
_write_dbs(addr & 15); | |
digitalWrite(PIN_A0, LOW); | |
_write_wr(); | |
_write_dbs(data & 15); | |
digitalWrite(PIN_A0, HIGH); | |
_write_wr(); | |
_write_dbs((data >> 4) & 15); | |
_write_wr(); | |
// Unnecessary cleanup | |
digitalWrite(PIN_A0, LOW); | |
_write_dbs(0); | |
} | |
static byte STR_HELLO[5] = { | |
SEG_F | SEG_E | SEG_G | SEG_B | SEG_C, | |
SEG_A | SEG_F | SEG_G | SEG_E | SEG_D, | |
SEG_F | SEG_E | SEG_D, | |
SEG_F | SEG_E | SEG_D, | |
SEG_F | SEG_E | SEG_D | SEG_A | SEG_B | SEG_C | |
}; | |
void loop() { | |
for (int i = 0; i < 10; i++) { | |
write_lcd_raw(i, 0); | |
} | |
delay(500); | |
for (int i = 0; i < 10; i++) { | |
write_lcd_raw(i, SEG_G); | |
delay(100); | |
} | |
delay(1000); | |
for (int i = 0; i < 10; i++) { | |
write_lcd_raw(i, 0); | |
} | |
int offset = 3; | |
int dir = 1; | |
while (1) { | |
for (int i = 0; i < 5; i++) { | |
write_lcd_raw(offset + i, STR_HELLO[i]); | |
} | |
if (offset > 0) { write_lcd_raw(offset - 1, 0); } | |
if (offset < 5) { write_lcd_raw(offset + 5, 0); } | |
delay(250); | |
offset += dir; | |
if (offset == 0 || offset == 5) { dir = -dir; } | |
} | |
} |
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