Paso 6: Subir el código
Añadir el código para el arduino Uno.
#define WAITLOW(pin) while (digitalRead(pin) != 0);#define WAITHIGH(pin) while (digitalRead(pin) != 1); int clockPin = 3; int dataPin = 4; static volatile uint8_t head; #define BUFFER_SIZE 45 static volatile uint8_t buffer[BUFFER_SIZE]; unsigned long lastScan = 0; boolean scanCorrect = true; int scannedInt = 0;byte keymap[] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, '`', 0, 0, 0 /*Lalt*/, 0 /*Lshift*/, 0, 0 /*Lctrl*/, 'q', '1', 0, 0, 0, 'z', 's', 'a', 'w', '2', 0, 0, 'c', 'x', 'd', 'e', '4', '3', 0, 0, ' ', 'v', 'f', 't', 'r', '5', 0, 0, 'n', 'b', 'h', 'g', 'y', '6', 0, 0, 0, 'm', 'j', 'u', '7', '8', 0, 0, ',', 'k', 'i', 'o', '0', '9', 0, 0, '.', '/', 'l', ';', 'p', '-', 0, 0, 0, '\'', 0, '[', '=', 0, 0, 0 /*CapsLock*/, 0 /*Rshift*/, 0 /*Enter*/, ']', 0, '\\', 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, '1', 0, '4', '7', 0, 0, 0, '0', '.', '2', '5', '6', '8', 0, 0 /*NumLock*/, 0, '+', '3', '-', '*', '9', 0, 0, 0, 0, 0, 0 }; void setup() { pinMode(clockPin, INPUT_PULLUP); pinMode(dataPin, INPUT_PULLUP); Serial.begin(9600); Serial.println("smart kart"); delay(2000); } void loop() { WAITLOW(clockPin); WAITHIGH(clockPin); unsigned char keycode = 0; for (uint8_t i = 0; i < 8; i++) { WAITLOW(clockPin); keycode >>= 1; if (digitalRead(dataPin)) { keycode |= 0x80; } WAITHIGH(clockPin); } buffer[head++] = keycode; WAITLOW(clockPin); WAITHIGH(clockPin); WAITLOW(clockPin); WAITHIGH(clockPin); unsigned long time = millis(); scanCorrect = true; if (head == 5 && lastScan - time > 2000) { scannedInt = keymap[buffer[3]] - '0'; if (scannedInt > 0) { Serial.println(); Serial.println("***** Detected Scan *******"); Serial.println(scannedInt); Serial.println("*******"); } else { scanCorrect = false; } head = 0; lastScan = time; for (int i = 0; i < 5; i++) buffer[i] = 0; } }
