Diff: MyTouch.cpp

Revision:

0:bd11ac9148e2

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/MyTouch.cpp	Fri Nov 28 22:33:06 2014 +0000
@@ -0,0 +1,44 @@
+#include "mbed.h"
+#include "MyTouch.h"
+
+MYTOUCH::MYTOUCH(PinName _tp_mosi, PinName _tp_miso, PinName _tp_sclk, PinName _tp_cs, PinName _tp_irq, unsigned char _resolution, void (*pointer_To_TP_IRQ_Handler)(void))
+        :tp_spi(_tp_mosi,_tp_miso,_tp_sclk),tp_cs(_tp_cs),tp_irqhandler(_tp_irq)
+        {
+        tp_cs = 1 ;
+        tp_spi.frequency(TP_FREQUENCY) ;
+        tp_spi.format(8,0) ;
+        
+        argument_type[0] = TP_GETX_12BIT ;
+        argument_type[1] = TP_GETY_12BIT ;
+        argument_type[2] = TP_GETX_8BIT ;
+        argument_type[3] = TP_GETY_8BIT ;
+        
+        if (pointer_To_TP_IRQ_Handler!=NULL)
+        tp_irqhandler.fall(pointer_To_TP_IRQ_Handler) ;
+        
+        tp_mode = _resolution ;
+        }
+        
+unsigned int MYTOUCH::TP_Get(unsigned char XY)
+    {
+    unsigned char hi, low;
+    unsigned int tmp;
+ 
+    tmp=0;
+    tp_cs.write(0);
+    wait_us(1);
+    tp_spi.write(argument_type[tp_mode+XY]);
+    wait_us(1);
+    if (tp_mode==USE_12BITS)
+        {
+        hi = tp_spi.write(0x00);  // hi
+        wait_us(1);
+        }
+    low = tp_spi.write(0x00);  // low
+    tp_cs.write(1);
+    tmp = ((hi << 8 ) | low);
+    tmp >>= 3;
+    tmp &= 0xfff;
+    tmp /= 4;                  // between 0 and 1024
+    return tmp;
+    }