4digitdisplay: added new 4digitdisplay module

Signed-off-by: Yevgeniy Kiveisha <yevgeniy.kiveisha@intel.com>

src/4digitdisplay/tm1637.h

@@ -0,0 +1,82 @@
+/*
+ * Author: Yevgeniy Kiveisha <yevgeniy.kiveisha@intel.com>
+ * Copyright (c) 2014 Intel Corporation.
+ *
+ * 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.
+ */
+#pragma once
+
+#include <string>
+#include <maa/aio.h>
+#include <maa/gpio.h>
+
+//
+//      A
+//     ---
+//  F |   | B
+//     -G-
+//  E |   | C
+//     ---
+//      D
+
+#define SEG_A   			0b00000001
+#define SEG_B   			0b00000010
+#define SEG_C   			0b00000100
+#define SEG_D   			0b00001000
+#define SEG_E   			0b00010000
+#define SEG_F   			0b00100000
+#define SEG_G   			0b01000000
+
+#define TM1637_I2C_COMM1    0x40
+#define TM1637_I2C_COMM2    0xC0
+#define TM1637_I2C_COMM3    0x80
+
+#define PULSE_LENGTH		50
+
+#define HIGH          		1
+#define LOW	        		0
+
+namespace upm {
+
+class TM1637 {
+    public:
+		TM1637 (uint8_t di, uint8_t dcki);
+		~TM1637 ();
+		maa_result_t setBrightness (uint8_t level);
+		maa_result_t setSegments (const uint8_t segments[], uint8_t length = 4, uint8_t pos = 0);
+		maa_result_t write (std::string msg);
+		
+		std::string name()
+        {
+            return m_name;
+        }
+	private:
+		maa_result_t start();
+		maa_result_t stop();
+		maa_result_t writeByte (uint8_t value);
+		maa_result_t pinMode (maa_gpio_context ctx, gpio_dir_t mode);
+
+		std::string m_name;
+		maa_gpio_context m_clkPinCtx;
+		maa_gpio_context m_dataPinCtx;
+		uint8_t m_brightness;
+};
+
+}