WIP

08-74HC595-Snake/08-74HC595-Snake.ino

@@ -0,0 +1,74 @@
+#include <Arduino.h>
+#include "controls.h"
+#include "error.h"
+
+/*
+Need 11 GPIO pins
+  - 74HC95 for the 8 segment
+	- 74HC595 for the rows of the 8x8
+	- 74HC9 for the cols of the 8x8
+	- 1x for the Joystick button
+	- 1x for the buzzer
+Need 3 ADC pins
+  - Joy X
+	- Joy Y
+	- Difficulty potentiometer
+*/
+
+// Pins 1 and 2 are on ADC channel 0 and 1.
+#define PIN_JOY_X            1
+#define PIN_JOY_Y            2
+// Pin 47 is GPIO only
+#define PIN_JOY_Z            47
+
+// We save 4 pins by updating all 3 shift registers at once
+// with one clock and one update signal. Each shift register
+// only needs its own data line.
+#define PIN_74HC595_CLOCK          11
+#define PIN_74HC595_UPDATE         12
+
+#define PIN_74HC595_LEDROWS_DATA              18
+#define PIN_74HC595_LEDCOLS_DATA              13
+#define PIN_74HC595_SCOREBOARD_DATA           14
+
+#define PIN_BUZZER                 21
+
+#define PIN_DIFFICULTY             9
+
+#define PWM_FREQUENCY         1000
+#define PWM_BITWIDTH          12
+
+Joystick js;
+
+void initSerial()
+{
+	Serial.begin(115200);
+}
+
+void setup() {
+	memset(&js, 0x00, sizeof(Joystick));
+
+	initSerial();
+	if ( initJoystick(&js, PIN_JOY_X, PIN_JOY_Y, PIN_JOY_Z) != ERRNO_SUCCESS ) {
+		Serial.printf("Failed to initialized Joystick datastructure : %d\n", errno);
+	}
+}
+
+
+void loop() {
+	if ( readButton(&js.button) != ERRNO_SUCCESS ) Serial.printf("Failed to read calibration button : %d\n", errno);
+	if ( js.button.state == BUTTON_STATE_DOWN && js.state != JOYSTICK_STATE_CALIBRATING ) {
+		js.button.state = BUTTON_STATE_HELD;
+	  js.state = JOYSTICK_STATE_CALIBRATING;
+	}
+	if ( js.state == JOYSTICK_STATE_CALIBRATING ) {
+		if ( calibrateJoystick(&js) != ERRNO_SUCCESS ) {
+			Serial.printf("Failed to calibrate joystick : %d\n", errno);
+		}
+	}
+	if ( ( js.state & JOYSTICK_STATE_CALIBRATED) == JOYSTICK_STATE_CALIBRATED ) {
+		if ( readJoystick(&js) != ERRNO_SUCCESS ) {
+			Serial.printf("Failed to read joystick state : %d\n", errno);
+		}
+	}
+}