Diff: main.cpp

Revision:

73:d47320bcc568

Parent:

72:aa14c091f860

Child:

74:847e5dc7b4d5

--- a/main.cpp	Mon Aug 06 09:28:20 2018 +0000
+++ b/main.cpp	Wed Aug 08 07:40:47 2018 +0000
@@ -1,17 +1,41 @@
 #include "mbed.h"
 #include "Grove_LCD_RGB_Backlight.h"
 #include "Grove_temperature.h"
+#include "WS2812.h"
+#include "PixelArray.h"
+#include "Servo.h"
+
+#if !defined(TARGET_WIO_3G)
+#error Selected target is not supported.
+#endif
 
 #define D20 (PB_4)
 #define D19 (PB_3)
 
+// on-board resources
+Serial pc(USBTX, USBRX, 115200);
 DigitalOut GrovePower(PB_10, 1);
+
+#define WS2812_BUF 150
+#define NUM_COLORS 6
+#define NUM_LEDS_PER_COLOR 10
+
+#define H0 8
+#define L0 32
+#define H1 17
+#define L1 32
+ 
+DigitalOut LEDPower(PE_8, 1);
+PixelArray px(WS2812_BUF);
+WS2812 ws(PB_1, 1, H0, L0, H1, L1);
+#if 0
+// Grove sensors
 DigitalOut led1(D38);
-AnalogIn ain(A6);
-InterruptIn btn(D20);
-Grove_LCD_RGB_Backlight rgbLCD(I2C_SDA, I2C_SCL);
+AnalogIn ain(A6); // angle or light sensor
+InterruptIn btn(D20); // button or touch sensor
+Grove_LCD_RGB_Backlight lcd(I2C_SDA, I2C_SCL);
 Grove_temperature temp(A4);
-
+#endif
 uint32_t button = 0;
 
 
@@ -20,23 +44,75 @@
     button++;
 }
 
+#if 0
+
 // main() runs in its own thread in the OS
 int main()
 {
-    btn.fall(push);
+    char buf[20];
+    btn.fall(push); // set interrupt handler
 
-    rgbLCD.clear();
-    rgbLCD.setRGB(0xff, 0x00, 0x00);
-    rgbLCD.locate(0, 0);
-    rgbLCD.print("Hello World!");
-    rgbLCD.locate(0, 1);
-    rgbLCD.print("This is a test");
+    lcd.clear();
+    lcd.setRGB(0xff, 0x00, 0x00);
+    lcd.locate(0, 0);
+    lcd.print("Hello World!");
+    lcd.locate(0, 1);
+
+#if 0
+    ws.useII(WS2812::PER_PIXEL); // use per-pixel intensity scaling
+    int array[4] = (0xff, 0, 0, 0);
+    ws.write(array);
+#endif
 
     int cnt = 0;
-    printf("hello, Mbed world\n");
+    pc.printf("hello, Mbed world\n");
+    
     while (true) {
-        printf("count = %4d, button = %d, analog = %f, temp = %f\n", cnt++, button, ain.read(), temp.getTemperature());
+        pc.printf("count = %4d, button = %d, analog = %2.2f, temp = %2.2f\n", cnt++, button, ain.read(), temp.getTemperature());
+        sprintf(buf, "L=%2.2f, T=%2.2f", ain.read(), temp.getTemperature());
+        lcd.setRGB(0xff, (255*ain.read()), 0x00);
+        lcd.locate(0, 1);
+        lcd.print(buf);
         led1 = !led1;
         wait(0.5);
     }
 }
+
+#else
+int main()
+{
+    pc.printf("NeoPixel test.\n");
+    pc.printf("%2d, %2d, %2d, %2d\n", H0, L0, H1, L1);
+ 
+    ws.useII(WS2812::PER_PIXEL); // use per-pixel intensity scaling
+    
+    // set up the colours we want to draw with
+    int colorbuf[NUM_COLORS] = {0x2f0000,0x2f2f00,0x002f00,0x002f2f,0x00002f,0x2f002f};
+ 
+    // for each of the colours (j) write out 10 of them
+    // the pixels are written at the colour*10, plus the colour position
+    // all modulus 60 so it wraps around
+    for (int i = 0; i < WS2812_BUF; i++) {
+        px.Set(i, colorbuf[(i / NUM_LEDS_PER_COLOR) % NUM_COLORS]);
+    }
+ 
+    // now all the colours are computed, add a fade effect using intensity scaling
+    // compute and write the II value for each pixel
+    for (int j=0; j<WS2812_BUF; j++) {
+        // px.SetI(pixel position, II value)
+        px.SetI(j%WS2812_BUF, 0xf+(0xf*(j%NUM_LEDS_PER_COLOR)));
+    }
+ 
+ 
+    // Now the buffer is written, rotate it
+    // by writing it out with an increasing offset
+    while (1) {
+        for (int z=WS2812_BUF; z >= 0 ; z--) {
+            ws.write_offsets(px.getBuf(),z,z,z);
+            wait(0.075);
+        }
+    }
+ 
+}
+#endif
+