penguin86/pato-z80-home-computer
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Working LCD!

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This commit is contained in:
Daniele Verducci su MatissePenguin
2020-10-24 23:30:50 +02:00
parent c833911cad
commit 01d1e1f6d8
5 changed files with 57 additions and 10 deletions
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17
arduino/hd44780_debugger/hd44780_debugger.ino
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@ -1,11 +1,9 @@
/* HD44780 Character display debugger */
#define EN 2
#define RS 11
const byte DATA_BUS[] = {10, 9, 8, 7, 6, 5, 4, 3};
#define EN 11
const byte DATA_BUS[] = {3, 4, 5, 6, 7, 8, 9, 10};
void setup() {
pinMode(RS, INPUT);
pinMode(EN, INPUT);
for(int pin=0; pin < 8; pin++) {
pinMode(DATA_BUS[pin], INPUT);
@ -13,9 +11,9 @@ void setup() {
Serial.begin(57600);
Serial.println("HD44780 debugger");
Serial.println("DATA BUS HEX RS EN");
Serial.println("DATA BUS HEX EN");
attachInterrupt(digitalPinToInterrupt(EN), onClk, CHANGE);
attachInterrupt(digitalPinToInterrupt(2), onClk, FALLING);
}
void loop() {}
@ -28,7 +26,10 @@ void onClk() {
data = (data << 1) + b; // Shifta di 1 e aggiunge il bit corrente. Serve per ricostruire il numero da binario
}
char output[30] = {};
sprintf(output, " 0x%02x %c %c", data, digitalRead(RS) ? 'D' : 'I', digitalRead(EN) ? 'H' : 'L');
char output[50] = {};
sprintf(output, " 0x%02x %c",
data,
digitalRead(EN) ? 'D' : 'I'
);
Serial.println(output);
}