Diff: WS2812.h

Revision:

6:583738208b96

Parent:

5:a07522fe36d4

--- a/WS2812.h	Mon Aug 18 13:25:57 2014 +0000
+++ b/WS2812.h	Fri Mar 20 06:46:11 2020 +0000
@@ -1,19 +1,61 @@
 /* Copyright (c) 2012 cstyles, MIT License
  *
- * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
- * and associated documentation files (the "Software"), to deal in the Software without restriction,
- * including without limitation the rights to use, copy, modify, merge, publish, distribute,
- * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom
+ * the Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
  *
- * The above copyright notice and this permission notice shall be included in all copies or
- * substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
- * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
- * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
- * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+/*
+    Modified by Kenji Arai / JH1PJL
+        March 20th, 2020
+
+    Original & Refrence
+        https://os.mbed.com/users/chris/code/ChrisRGB-Ring/
+        https://os.mbed.com/users/chris/code/WS2812/
+        https://os.mbed.com/users/chris/code/PixelArray/
+
+        https://os.mbed.com/users/bridadan/code/WS2812_Example/
+        https://os.mbed.com/users/bridadan/code/WS2812/
+        https://os.mbed.com/users/chris/code/PixelArray/
+
+ */
+
+/*
+    !!!!! This library does NOT follow specification value of the timing !!!!
+        https://cdn-shop.adafruit.com/datasheets/WS2812B.pdf
+        http://akizukidenshi.com/download/ds/adafruit/WS2812B.pdf
+
+    WS2812 -> Interpretation of control timing (Not Grantee but works)
+        Specification   
+                    T0H     200 to 500ns
+                    T1H     550 to 850ns
+                    T0L     650 to 950ns
+                    T1L     450 to 750ns
+                    Reset   50us
+        Interpretation
+                    T0H     same as above
+                    T1H     same as above
+                    T0L     less than 10us
+                    T1L     Less than 10us
+                    Reset   over 50uS
+
+    Please refer following web page
+        https://wp.josh.com/2014/05/13/
+                ws2812-neopixels-are-not-so-finicky-once-you-get-to-know-them/
  */
 
 #ifndef WS2812_H
@@ -21,11 +63,29 @@
 
 #include "mbed.h"
 
-#define WS1 0x38
-#define WS0 0x30
-#define SPICLK 5000000
-#define SPIBPF 6
-
+#if \
+    defined(TARGET_NUCLEO_F042K6)\
+ || defined(TARGET_NUCLEO_F334R8)\
+ || defined(TARGET_NUCLEO_F401RE)\
+ || defined(TARGET_NUCLEO_F411RE)\
+ || defined(TARGET_NUCLEO_F446RE)\
+ || defined(TARGET_NUCLEO_L053R8)\
+ || defined(TARGET_NUCLEO_L073RZ)\
+ || defined(TARGET_NUCLEO_L152RE)\
+ || defined(TARGET_NUCLEO_L476RG)
+#   define WS1 0x0f
+#   define WS0 0x0c
+#   define SPICLK 8000000
+#   define SPIBPF 4
+#elif \
+    defined(TARGET_RZ_A1H)\
+ || defined(TARGET_GR_LYCHEE)\
+ || defined(TARGET_GR_MANGO)
+#   define WS1 0x0f
+#   define WS0 0x0c
+#   define SPICLK 5000000
+#   define SPIBPF 8
+#endif
 
 //!Library for the WS2812 RGB LED with integrated controller
 /*!
@@ -34,38 +94,35 @@
 class WS2812
 {
 public:
+    enum BrightnessControl {OFF, GLOBAL, PER_PIXEL};
+
     //!Creates an instance of the class.
     /*!
-    Connect WS2812 address addr using SPI MOSI pins
+    Connect WS2812 using SPI MOSI pin(Only use) and MISO&SCLK(NC)
     */
-    WS2812(PinName d, int size);
+    WS2812(PinName mosi, PinName miso, PinName sclk, int size);
 
     /*!
     Destroys instance.
     */
     ~WS2812();
 
-    //!Reads the current temperature.
-    /*!
-    Reads the temperature register of the LM75B and converts it to a useable value.
-    */
-    void write (int buf[]);
-    void write_offsets (int buf[],int r_offset=0, int g_offset=0, int b_offset=0);
-    void setAll(int colour);
+    void write(int buf[]);
+    void write_offsets(int buf[], int r_offset = 0,
+                       int g_offset = 0, int b_offset = 0);
+    void setAll(int color);
 
-    void useII(int d);
-    void setII(unsigned char II);
-    
-
+    void set_brightness_mode(BrightnessControl mode);
+    void set_brightness(unsigned char br);
 
 private:
+    SPI __spi;
+
+    void __write (int color);
 
     int __size;
-    unsigned char __II;
-    int __use_II;
-    SPI __spi;
-    void __write (int color);
-
+    unsigned char __br;
+    BrightnessControl __mode;
 
 };