Diff: LED7segDisplay.hpp

Revision:

25:0161bf1adc81

Child:

26:166dbe6022e8

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/LED7segDisplay.hpp	Wed Sep 05 10:15:52 2018 -0700
@@ -0,0 +1,55 @@
+/**
+ * @author Charles Young
+ * This class encapsulates the behavior of the 7-seg 8 digit LED display
+ */
+
+#ifndef LED7segDisplay_H
+#define LED7segDisplay_H
+
+/**
+ * Includes
+ */
+#include "mbed.h"
+#include "HwRegisters.hpp"
+
+#define DEC_MODE    0x09FF  // BCD decoding on all digits
+#define SCAN_LIM    0x0B07  // use all 8 digits  
+#define TURN_ON     0x0C01  // no shutdown (operating)
+#define SHUTDOWN    0x0C00  // shutdown
+#define TEST        0x0F00  // no test
+#define DT      1      // delay time in us for SPI emulation
+
+#define BRIGHTNESS_MIN  0x0A00  // brightness in 16 steps - min to max is 0x0A00 to  0x0A0F
+#define BRIGHTNESS_MAX  0x0A0F  // brightness in 16 steps - min to max is 0x0A00 to  0x0A0F
+
+/**
+ * Code associated with rotary switch.
+ */
+class LED7segDisplay {
+
+public:
+
+   /**
+    * Constructor.
+    *
+    * @param channelA mbed pin for channel A input.
+    * @param channelB mbed pin for channel B input.
+    */
+   LED7segDisplay();
+
+   void Display_6D_write(uint8_t);    // write to MAX7219 (Main 6-digits display)
+   void Display_2D_write(unsigned short);    // write to MAX7219 (Gate 2-digits display)
+   void Display_brightness_up();
+   void Display_brightness_down();
+
+private:
+   uint16_t brightness = BRIGHTNESS_MAX;
+   uint8_t     Disp_Digit[8]; // used to manage 8-digits through MAX7219
+   uint16_t    Stream;        // used to stream out serial data to MAX7219
+
+   void Display_init(void);    // initialize MAX7219
+   void sendDataToDisplay(uint16_t data_to_send);
+   void Display_brightness(uint16_t brightness);
+};
+
+#endif /* LED7segDisplay_H */