initial upload

examples/osd/lgb-train/Grove_LED_Bar.cpp

@@ -0,0 +1,206 @@
+/*
+  LED bar library V2.0
+  Copyright (c) 2010 Seeed Technology Inc.
+
+  Original Author: LG
+
+  Modify: Loovee, 2014-2-26
+  User can choose which Io to be used.
+
+  The MIT License (MIT)
+
+  Copyright (c) 2013 Seeed Technology Inc.
+
+  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 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.
+*/
+
+#include "Grove_LED_Bar.h"
+
+Grove_LED_Bar::Grove_LED_Bar(unsigned char pinClock, unsigned char pinData, bool greenToRed)
+{
+  __pinClock = pinClock;
+  __pinData = pinData;
+  __greenToRed = greenToRed;  // ascending or decending
+
+  for (byte i = 0; i < 10; i++)
+    __state[i] = 0x00;  // persist state so individual leds can be toggled
+
+  pinMode(__pinClock, OUTPUT);
+  pinMode(__pinData, OUTPUT);
+}
+
+
+// Send the latch command
+void Grove_LED_Bar::latchData()
+{
+  digitalWrite(__pinData, LOW);
+  delayMicroseconds(10);
+
+  for (unsigned char i = 0; i < 4; i++)
+  {
+    digitalWrite(__pinData, HIGH);
+    digitalWrite(__pinData, LOW);
+  }
+}
+
+
+// Send 16 bits of data
+void Grove_LED_Bar::sendData(unsigned int data)
+{
+  unsigned int state = 0;
+  for (unsigned char i = 0; i < 16; i++)
+  {
+    unsigned int state1 = (data & 0x8000) ? HIGH : LOW;
+    digitalWrite(__pinData, state1);
+
+    //state = digitalRead(__pinClock) ? LOW : HIGH;
+    state = 1-state;
+    digitalWrite(__pinClock, state);
+
+    data <<= 1;
+  }
+}
+
+
+// Change the orientation
+// Green to red, or red to green
+void Grove_LED_Bar::setGreenToRed(bool greenToRed)
+{
+  __greenToRed = greenToRed;
+
+  setData(__state);
+}
+
+
+// Set level (0-10)
+// Level 0 means all leds off
+// Level 10 means all leds on
+// Level 4.5 means 4 LEDs on and the 5th LED's half on
+void Grove_LED_Bar::setLevel(float level)
+{
+  level = max(0, min(10, level));
+  level *= 8; // there are 8 (noticable) levels of brightness on each segment
+
+  // Place number of 'level' of 1-bits on __state
+  for (byte i = 0; i < 10; i++) {
+    __state[i] = (level > 8) ? ~0 :
+                 (level > 0) ? ~(~0 << byte(level)) : 0;
+
+    level -= 8;
+  };
+
+  setData(__state);
+}
+
+
+// Set a single led
+// led (1-10)
+// brightness (0-1)
+void Grove_LED_Bar::setLed(unsigned char led, float brightness)
+{
+  led = max(1, min(10, led));
+  brightness = max(0, min(brightness, 1));
+
+  // Zero based index 0-9 for bitwise operations
+  led--;
+
+  // 8 (noticable) levels of brightness
+  // 00000000 darkest
+  // 00000011 brighter
+  // ........
+  // 11111111 brightest
+  __state[led] = ~(~0 << (unsigned char) (brightness*8));
+
+  setData(__state);
+}
+
+
+// Toggle a single led
+// led (1-10)
+void Grove_LED_Bar::toggleLed(unsigned char led)
+{
+  led = max(1, min(10, led));
+
+  // Zero based index 0-9 for bitwise operations
+  led--;
+
+  __state[led] = __state[led] ? 0 : ~0;
+
+  setData(__state);
+}
+
+// each element in the state will hold the brightness level
+// 00000000 darkest
+// 00000011 brighter
+// ........
+// 11111111 brightest
+void Grove_LED_Bar::setData(unsigned char __state[])
+{
+
+  sendData(GLB_CMDMODE);
+
+  for (unsigned char i = 0; i < 10; i++)
+  {
+    if (__greenToRed)
+    {
+	  // Go backward on __state
+      sendData(__state[10-i-1]);
+    }
+    else
+    {
+	  // Go forward on __state
+      sendData(__state[i]);
+    }
+  }
+
+  // Two extra empty bits for padding the command to the correct length
+  sendData(0x00);
+  sendData(0x00);
+
+  latchData();
+}
+
+void Grove_LED_Bar::setBits(unsigned int bits)
+{
+
+  for (unsigned char i = 0; i < 10; i++)
+  {
+
+    if ((bits % 2) == 1)
+      __state[i] = 0xFF;
+    else
+      __state[i] = 0x00;
+    bits /= 2;
+  }
+
+  setData(__state);
+}
+
+
+// Return the current bits
+unsigned int const Grove_LED_Bar::getBits()
+{
+  unsigned int __bits = 0x00;
+  for (unsigned char i = 0; i < 10; i++)
+  {
+    if (__state[i] != 0x0)
+        __bits |= (0x1 << i);
+  }
+  return __bits;
+}

examples/osd/lgb-train/Grove_LED_Bar.h

@@ -0,0 +1,73 @@
+/*
+  LED bar library V2.0
+  Copyright (c) 2010 Seeed Technology Inc.
+
+  Original Author: LG
+
+  Modify: Loovee, 2014-2-26
+  User can choose which Io to be used.
+  
+  Modify: Long, 2015-01-07
+  User can change the brightness level for each LED segment
+  Rename constant to avoid name conflict
+  
+  The MIT License (MIT)
+
+  Copyright (c) 2013 Seeed Technology Inc.
+
+  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 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.
+
+*/
+#ifndef Grove_LED_Bar_H
+#define Grove_LED_Bar_H
+
+#include <Arduino.h>
+
+// Avoid name conflict
+#define GLB_CMDMODE 0x00  // Work on 8-bit mode
+#define GLB_ON      0xff  // 8-bit 1 data
+#define GLB_OFF     0x00  // 8-bit 0 data
+
+class Grove_LED_Bar
+{
+
+private:
+
+  unsigned int __pinClock;  // Clock pin
+  unsigned int __pinData;   // Data pin
+  bool __greenToRed;        // Orientation (0 = red to green, 1 = green to red)
+  unsigned char __state[10];// Led state, brightness for each LED
+
+  void sendData(unsigned int data);  // Send a word to led bar
+  void latchData(void);              // Load data into the latch register
+  void setData(unsigned char bits[]);//Set data array
+
+public:
+
+  Grove_LED_Bar(unsigned char pinClock, unsigned char pinData, bool greenToRed);  // Initialize
+  void begin(){pinMode(__pinClock, OUTPUT); pinMode(__pinData, OUTPUT);}
+  void setGreenToRed(bool greenToRed);             // (Re)set orientation
+  void setLevel(float level);                      // Set level, range from 0 to 10
+  void setLed(unsigned char led, float brightness);// Set brightness for a single led, range from 0 to 1
+  void toggleLed(unsigned char led);               // Toggle a single led
+  void setBits(unsigned int bits);                 // Toggle leds to match given bits
+  unsigned int const getBits();                    // Get the current state
+};
+
+#endif