Add the WS2812 code

06-joystick/06-joystick.ino

@@ -1,3 +1,5 @@
+#include "Freenove_WS2812_Lib_for_ESP32.h"
+
 /*********************************************************************************/
 // Constants
 
@@ -29,7 +31,7 @@
 //#define PIN_JOY_Z            12
 
 #define BUTTON_STABLETIME    100
-#define JOYSTICK_STABLETIME  1000
+#define JOYSTICK_STABLETIME  3000
 
 // Button states
 #define BUTTON_STATE_BOUNCING     (1 << 0)
@@ -44,14 +46,14 @@
 #define JOYSTICK_STATE_READY       (1 << 3)
 
 // These aren't pins, they're just defines that help us identify the lights on the 2812 unit
-#define LED_2812_LEFT         1    // 2812 LEDs are ordered from connection point at left
+#define LED_2812_LEFT         0    // 2812 LEDs are ordered from connection point at left
-#define LED_2812_TOPLEFT      2    // and go clockwise
+#define LED_2812_TOPLEFT      1    // and go clockwise
-#define LED_2812_TOP          3
+#define LED_2812_TOP          2
-#define LED_2812_TOPRIGHT     4
+#define LED_2812_TOPRIGHT     3
-#define LED_2812_RIGHT        5
+#define LED_2812_RIGHT        4
-#define LED_2812_BOTTOMRIGHT  6
+#define LED_2812_BOTTOMRIGHT  5
-#define LED_2812_BOTTOM       7
+#define LED_2812_BOTTOM       6
-#define LED_2812_BOTTOMLEFT   8
+#define LED_2812_BOTTOMLEFT   7
 
 // Error flags
 
@@ -97,7 +99,7 @@ typedef struct JoystickAxis {
 	uint8_t pin;
 	// Calibration data
 	Calibration calibration;
-	// Position as of the last read time
+	// Position as of the last read time.
 	uint32_t position;
 } JoystickAxis;
 
@@ -118,6 +120,7 @@ typedef struct Joystick {
 int errno;
 Button calibration_button;
 Joystick js;
+Freenove_ESP32_WS2812 *strip;
 
 /******************************************************************************/
 // Initialization Functions
@@ -126,8 +129,15 @@ void initSerial()
 	Serial.begin(115200);
 }
 
-int init2812()
+int init2812(Freenove_ESP32_WS2812 **strip)
 {
+	Freenove_ESP32_WS2812 *obj = new Freenove_ESP32_WS2812(8, PIN_2812, 0, TYPE_GRB);
+	if ( obj == NULL ) {
+		ERROR(ERRNO_NULLPOINTER);
+	}
+  obj->setBrightness(10);
+	obj->begin();
+	*strip = obj;
 	return ERRNO_SUCCESS;
 }
 
@@ -273,10 +283,16 @@ int readJoystick(Joystick *js)
 	adcvalue = analogRead(js->x.pin);
 	if ( adcvalue < js->x.calibration.low || adcvalue > js->x.calibration.high ) {
 		js->x.position = adcvalue;
+	} else {
+		// Snap to center
+		js->x.position = 2048;
 	}
 	adcvalue = analogRead(js->y.pin);
 	if ( adcvalue < js->y.calibration.low || adcvalue > js->y.calibration.high ) {
 		js->y.position = adcvalue;
+	} else {
+		// Snap to center
+		js->y.position = 2048;
 	}
 	//Serial.printf("Joystick x %d y %d\n", js->x.position, js->y.position);
 	
@@ -317,15 +333,43 @@ int displayLEDs(Joystick *js)
 	return ERRNO_SUCCESS;
 }
 
-int display2812(Joystick *js)
+int display2812(Joystick *js, Freenove_ESP32_WS2812 *strip)
 {
 	if ( js == NULL ) {	
 		ERROR(ERRNO_NULLPOINTER);
 	}
+	strip->setLedColorData(LED_2812_LEFT, 0, 0, 0);
+	strip->setLedColorData(LED_2812_TOPLEFT, 0, 0, 0);
+	strip->setLedColorData(LED_2812_TOP, 0, 0, 0);
+	strip->setLedColorData(LED_2812_TOPRIGHT, 0, 0, 0);
+	strip->setLedColorData(LED_2812_RIGHT, 0, 0, 0);
+	strip->setLedColorData(LED_2812_BOTTOMRIGHT, 0, 0, 0);
+	strip->setLedColorData(LED_2812_BOTTOM, 0, 0, 0);
+	strip->setLedColorData(LED_2812_BOTTOMLEFT, 0, 0, 0);
+	
 	// Is the joystick fully ready? Display direction on the 2812
 	if ( ( js->state & JOYSTICK_STATE_READY ) == JOYSTICK_STATE_READY ) {
 		// Light up the correct LED_2812_* depending on the value of the X/Y axes on the joystick
+		if ( js->x.position < 1024 && (js->y.position < 3072 && js->y.position > 1024) ) {
+			strip->setLedColorData(LED_2812_LEFT, 128, 128, 128);
+		} else if ( js->x.position < 1024 && js->y.position < 1024 ) {
+			strip->setLedColorData(LED_2812_TOPLEFT, 128, 128, 128);
+		} else if ( ( js->x.position > 1024 && js->x.position < 3072 ) && js->y.position < 1024 ) {
+			strip->setLedColorData(LED_2812_TOP, 128, 128, 128);
+		} else if ( js->x.position > 3072 && js->y.position < 1024 ) {
+			strip->setLedColorData(LED_2812_TOPRIGHT, 128, 128, 128);
+		} else if ( js->x.position > 3072 && ( js->y.position < 3072 && js->y.position > 1024) ) {
+			strip->setLedColorData(LED_2812_RIGHT, 128, 128, 128);
+		} else if ( js->x.position > 3072 && js->y.position > 3072 ) {
+			strip->setLedColorData(LED_2812_BOTTOMRIGHT, 128, 128, 128);
+		} else if ( ( js->x.position > 1024 && js->x.position < 3072 ) && js->y.position > 3072 ) {
+			strip->setLedColorData(LED_2812_BOTTOM, 128, 128, 128);
+		} else if ( js->x.position < 1024 && js->y.position > 3072 ) {
+			strip->setLedColorData(LED_2812_BOTTOMLEFT, 128, 128, 128);
 		}	
+	}
+	strip->show();
+	
 	return ERRNO_SUCCESS;
 }
 
@@ -342,7 +386,7 @@ void setup() {
 	calibration_button.pressedvalue = LOW;
 	
 	initSerial();
-	if ( init2812() != ERRNO_SUCCESS ) Serial.printf("Failed to initialize 2812 LED array : %d\n", errno);
+	if ( init2812(&strip) != ERRNO_SUCCESS ) Serial.printf("Failed to initialize 2812 LED array : %d\n", errno);
 	if ( initLEDs() != ERRNO_SUCCESS ) Serial.printf("Failed to initialize LED GPIO pins : %d\n", errno);
 	if ( initJoystick(&js) != ERRNO_SUCCESS ) Serial.printf("Failed to initialized Joystick datastructure : %d\n", errno);
 	if ( initButton(&calibration_button) != ERRNO_SUCCESS ) Serial.printf("Failed to initialize Calibration button and GPIO pin : %d\n", errno);
@@ -369,7 +413,7 @@ void loop() {
 	if ( displayLEDs(&js) != ERRNO_SUCCESS ) {
 		Serial.printf("Failed to display LEDs : %d\n", errno);
 	}
-	if ( display2812(&js) != ERRNO_SUCCESS ) {
+	if ( display2812(&js, strip) != ERRNO_SUCCESS ) {
 		Serial.printf("Failed to display 2812 LEDs : %d\n", errno);
 	}
 }