Diff: DmTouch.h

Revision:

0:fd018d3e7dab

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/DmTouch.h	Wed Jan 20 07:25:22 2016 +0000
@@ -0,0 +1,104 @@
+/**********************************************************************************************
+ Copyright (c) 2014 DisplayModule. All rights reserved.
+ 
+ Redistribution and use of this source code, part of this source code or any compiled binary
+ based on this source code is permitted as long as the above copyright notice and following
+ disclaimer is retained.
+ 
+ DISCLAIMER:
+ THIS SOFTWARE IS SUPPLIED "AS IS" WITHOUT ANY WARRANTIES AND SUPPORT. DISPLAYMODULE ASSUMES
+ NO RESPONSIBILITY OR LIABILITY FOR THE USE OF THE SOFTWARE.
+ ********************************************************************************************/
+ 
+#ifndef DM_TOUCH_h
+#define DM_TOUCH_h
+ 
+#include "mbed.h"
+//#include "dm_platform.h"  // What is needed from dm_platform.h?
+
+#define sbi(reg, _bitmask) (*(reg) = 1)
+#define cbi(reg, _bitmask) (*(reg) = 0)
+#define delay(ms) wait_ms(ms)
+#define pulse_high(reg, _bitmask) do { *(reg) = 1; *(reg) = 0; } while(0)
+#define pulse_low(reg, _bitmask) do { *(reg) = 0; *(reg) = 1; } while(0)
+#define slow_pulse_high(reg, _bitmask) do {\
+   *(reg) = 1;    \
+   slow_pulse_delay(); \
+   *(reg) = 0;    \
+   slow_pulse_delay(); \
+} while(0)
+#define slow_pulse_low(reg, _bitmask) do {\
+   *(reg) = 0;    \
+   slow_pulse_delay(); \
+   *(reg) = 1;    \
+   slow_pulse_delay(); \
+} while(0)
+#define slow_pulse_delay()
+ 
+typedef struct calibrationMatrix {
+  int  a, b, c, d, e, f;
+} CalibrationMatrix;
+ 
+class DmTouch
+{
+public:
+  enum Display {
+    DM_TFT28_103 = 103,
+    DM_TFT24_104 = 104,
+    DM_TFT28_105 = 105,
+    DM_TFT35_107 = 107,
+    DM_TFT43_108 = 108,
+    DM_TFT50_111 = 111
+  };
+ 
+  enum SpiMode {
+    Auto,
+    Software,
+    Hardware
+  };
+  
+  enum TouchId{
+    IC_8875 = 0x8875,
+    IC_2046 = 0x2046        
+  };
+
+  DmTouch(Display disp, PinName mosi, PinName miso, PinName clk, PinName cs, PinName irq);      // Add cs and irq to input parameters
+  void init();
+  void readTouchData(uint16_t& posX, uint16_t& posY, bool& touching);
+  bool isTouched();
+  bool getMiddleXY(uint16_t &x, uint16_t &y); // Raw Touch Data, used for calibration
+  void setCalibrationMatrix(CalibrationMatrix calibrationMatrix);
+  void setPrecison(uint8_t samplesPerMeasurement);
+  void waitForTouch();
+  void waitForTouchRelease();
+  uint32_t rescaleFactor() { return 1000000; };
+  Display getDisplay() { return _disp; };
+  static CalibrationMatrix getDefaultCalibrationData(Display disp);                             // (JML) Added to this class because avoid DmTouchCalibration initially
+  void setOrientation(char orient);                                                             // Set screen orientation mode
+ 
+private:
+  void spiWrite(uint8_t data);
+  uint8_t spiRead();
+  uint16_t readData12(uint8_t command);
+  void enableIrq();
+  void readRawData(uint16_t &x, uint16_t &y);
+  void getAverageXY(uint16_t &x, uint16_t &y);
+  uint16_t getDisplayCoordinateX(uint16_t x_touch, uint16_t y_touch);
+  uint16_t getDisplayCoordinateY(uint16_t x_touch, uint16_t y_touch);
+  uint16_t calculateMiddleValue(uint16_t values[], uint8_t count);
+  bool isSampleValid();
+ 
+  Display _disp;
+  uint16_t _width, _height;
+  bool _hardwareSpi;
+  uint8_t _samplesPerMeasurement;
+  CalibrationMatrix _calibrationMatrix;
+  uint16_t _touch_id;
+  char _orient;                                                         // Adjust to changes in screen orientation
+ 
+  PinName _cs, _clk, _mosi, _miso, _irq;
+  DigitalOut *_pinDC, *_pinCS, *_pinCLK, *_pinMOSI, *_led;
+  DigitalIn *_pinMISO, *_pinIrq;
+  SPI *_spi;
+};
+#endif
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