Diff: main.cpp

Revision:

1:0a7005226e61

Parent:

0:cd5e3d371b54

--- a/main.cpp	Thu Nov 19 13:34:57 2015 +0000
+++ b/main.cpp	Mon Jul 30 14:18:06 2018 +0000
@@ -1,3 +1,6 @@
+/* Adapted from other examples to work on a F767ZI
+ */
+ 
 /* mbed main.cpp to test adafruit 2.8" TFT LCD shiled w Touchscreen
  * Copyright (c) 2014, 2015 Motoo Tanaka @ Design Methodology Lab
  *
@@ -28,50 +31,244 @@
 #include "Arial28x28.h"
 #include "Arial43x48_numb.h"
 
-#define PIN_MOSI        PA_7
-#define PIN_MISO        PA_6  
-#define PIN_SCLK        PA_5 
-#define PIN_CS_TFT      PB_6 
-#define PIN_DC_TFT      PC_7 
-#define PIN_BL_TFT      PA_8 
-#define PIN_CS_SD       PB_5 
-#define PIN_CS_TSC      PA_9 
-#define PIN_TSC_INTR    PA_8
 #define PIN_RESET_TFT   PC_13 /* place holder */
-#define DEVICE_NAME     "F411RE"
+
+// ------------- FROM WORKING VERSION
+
+#define PIN_MOSI        D11
+#define PIN_MISO        D12
+#define PIN_SCLK        D13
+#define PIN_CS_TFT      D5
+#define PIN_DC_TFT      D6
+#define PIN_BL_TFT      D7
+#define PIN_CS_SD       D4
+
+// =====================================
+
+#define PIN_XP          A2
+#define PIN_XM          A0
+#define PIN_YP          A3
+#define PIN_YM          A1
+
+
+struct point {
+    int x;
+    int y;
+};
 
-#ifndef TARGET_NECLEO_F411RE
-#define TARGET_NECLEO_F411RE 
-#endif
+void calibrate(void);
+bool getPixel(point& p);
+point toPixel(point p);
+
+typedef enum { YES, MAYBE, NO } TOUCH;
+
+TOUCH getTouch(point& p);
+
+int readTouch(PinName p, PinName m, PinName a, PinName i);
+
+
+int x_off = 22071;
+int y_off = 18707;
+int pp_tx = 373;
+int pp_ty = 297;
+
+// =====================================
+
+DigitalOut backlight(PIN_BL_TFT) ;
+
+ILI9341 TFT(SPI_8, 10000000, PIN_MOSI, PIN_MISO, PIN_SCLK, PIN_CS_TFT, PIN_RESET_TFT, PIN_DC_TFT, "Seeed2.8") ;
+
+int page = 1 ;
+int numPage = 3 ;
+
+Serial logger(SERIAL_TX, SERIAL_RX);
+
+
+/// ================================================================================================
 
 
-DigitalOut backlight(PB_3) ;
-DigitalOut tsc_cs(PA_9, 1) ;
-DigitalOut tft_cs(PB_6, 1) ;
+int readTouch(PinName p, PinName m, PinName a, PinName i)
+{
+    DigitalOut _p(p);
+    _p = 1;
+    DigitalOut _m(m);
+    _m = 0;
+    AnalogIn   _a(a);
+    AnalogIn   _i(i); // this pin has to be high Z (DigitalIn may also work)
+    wait_us(10);
+    return _a.read_u16();
+}
+
+TOUCH getTouch(point& p)
+{
+    int y2 = readTouch(PIN_XP,PIN_XM,PIN_YP,PIN_YM);
+    int x2 = readTouch(PIN_YP,PIN_YM,PIN_XP,PIN_XM);
+    int y1 = readTouch(PIN_XP,PIN_XM,PIN_YP,PIN_YM);
+    int x1 = readTouch(PIN_YP,PIN_YM,PIN_XP,PIN_XM);
+    int xd = x1 - x2;
+    int yd = y1 - y2;
+    xd = (xd > 0) ? xd : -xd;
+    yd = (yd > 0) ? xd : -xd;
+    p.x = x1 + x2;
+    p.y = y1 + y2;
+    
+    const int th = 8000;
+    const int df =  100;
+    TOUCH touch;
+    if (x1 < th || x2 < th ||
+            y1 < th || y2 < th) {
+        p.x = 0;
+        p.y = 0;
+        touch = NO;
+    } else if (xd > df || yd > df) {
+        touch = MAYBE;
+    } else {
+        touch = YES;
+    }
+    //TFT.locate(0,50);
+    //TFT.printf("x: %6i y: %6i",p.x,p.y);
+    return touch;
+}
 
-ILI9341 TFT(SPI_8, 10000000, 
-    PIN_MOSI, PIN_MISO,  PIN_SCLK, 
-    PIN_CS_TFT, PIN_RESET_TFT, PIN_DC_TFT, "Adafruit2.8") ;
-SPI_STMPE610 TSC(PIN_MOSI, PIN_MISO, PIN_SCLK, PIN_CS_TSC) ;
+void calibrate(void)
+{
+    int i;
+    int a = 0,b = 0,c = 0, d = 0;
+    int pos_x = 0, pos_y = 0;
+    point p;
+    
+    backlight = 0 ;
+    //TFT.BusEnable(true) ;
+    
+    TFT.background(Black);
+    wait(0.1) ;
+    TFT.foreground(White);
+    wait(0.1) ;
+    TFT.cls() ;
+    wait(0.1) ;
+    TFT.set_font((unsigned char*) Arial12x12);
+    TFT.locate(90,0);
+    TFT.printf("Graphics");
+    
+    TFT.line(0,3,6,3,White);
+    TFT.line(3,0,3,6,White);
+    
+    backlight = 1 ;
+    
+    //if (font)
+    //{
+        // get the center of the screen
+        pos_x = TFT.columns() / 2 - 3;
+        pos_x = pos_x * Arial12x12[1];
+        pos_y = (TFT.rows() / 2) - 1;
+        pos_y = pos_y * Arial12x12[2];
+        TFT.locate(pos_x,pos_y);
+        TFT.printf("press cross    ");
+        TFT.locate(pos_x,pos_y + Arial12x12[2]);
+        TFT.printf("to calibrate   ");
+    //}
+    
+    for (i=0; i<5; i++) {
+        while (getTouch(p) != YES)
+            /*nothing*/;
+        a += p.x;
+        b += p.y;
+    }
+    a = a / 5;
+    b = b / 5;
+    //if (font)
+    //{
+        TFT.locate(pos_x,pos_y);
+        TFT.printf("ok             ");
+        TFT.locate(pos_x,pos_y + Arial12x12[2]);
+        TFT.printf("release touch  ");
+    //}
+    while (getTouch(p) != NO)
+        /*nothing*/;
+    
+    TFT.cls();
+    TFT.line(TFT.width() -5, TFT.height() - 8,TFT.width() - 5,TFT.height() -1,White);   // paint cross
+    TFT.line(TFT.width() - 8,TFT.height() - 5,TFT.width() - 1,TFT.height() - 5,White);
+    //if (font)
+    //{
+        TFT.locate(pos_x,pos_y);
+        TFT.printf("press cross    ");
+        TFT.locate(pos_x,pos_y + Arial12x12[2]);
+        TFT.printf("to calibrate   ");
+    //}
+    for (i=0; i<5; i++) {
+        while (getTouch(p) != YES)
+            /*nothing*/;
+        c+= p.x;
+        d+= p.y;
+    }
+    c = c / 5;
+    d = d / 5;
+    x_off = a;
+    y_off = b;
+    i = c-a;  // delta x
+    pp_tx = i / (TFT.width() - 6);
+    i = d-b;  // delta y
+    pp_ty = i / (TFT.height() - 6);
+    //if (font)
+    //{
+        TFT.locate(pos_x,pos_y);
+        TFT.printf("Calibrated     ");
+        TFT.locate(pos_x,pos_y + Arial12x12[2]);
+        TFT.printf("x %6i %4i", x_off, pp_tx);
+        TFT.locate(pos_x,pos_y + 2*Arial12x12[2]);
+        TFT.printf("y %6i %4i", y_off, pp_ty);
+    //}
+    while (getTouch(p) != NO)
+        /*nothing*/;
+    TFT.cls();
+    
+    //TFT.BusEnable(false) ;
+    
+    printf("x_off:%6i pp_tx:%4i \n\r", x_off, pp_tx);
+    printf("y_off:%6i pp_ty:%4i \n\r", y_off, pp_ty);
+}
 
-int page = 0 ;
-int numPage = 2 ;
+point toPixel(point p)
+{
+    p.x -= x_off;
+    p.x /= pp_tx;
+    int w = TFT.width();
+    if (p.x > w) p.x = w;
+    if (p.x < 0) p.x = 0;
+    p.y -= y_off;
+    p.y /= pp_ty;
+    int h = TFT.height();
+    if (p.y > h) p.y = h;
+    if (p.y < 0) p.y = 0;
+    return (p);
+}
+
+bool getPixel(point& p)
+{
+    TOUCH touch = getTouch(p);
+    p = toPixel(p);
+    return touch == YES;
+}
+
+
+// ===================================================
 
 void initTFT(void)
 {
     //Configure the display driver
-    TFT.BusEnable(true) ;
+    //TFT.BusEnable(true) ;
     TFT.FastWindow(true) ;
     TFT.background(Black);
     TFT.foreground(White);
     wait(0.01) ;
     TFT.cls();
-    TFT.BusEnable(false) ;
+    //TFT.BusEnable(false) ;
 }
 
 void screen1(void) // Welcome Screen
 {
-    TFT.BusEnable(true) ;
+    //TFT.BusEnable(true) ;
     backlight = 0 ;
     TFT.background(White) ;
     wait(0.1) ;
@@ -103,7 +300,7 @@
     TFT.printf("and hold right side of screen") ;
     TFT.locate(30, 300) ;
     TFT.printf("until the next screen starts") ;
-    TFT.BusEnable(false) ;
+    //TFT.BusEnable(false) ;
     backlight = 1 ;
 }
 
@@ -112,7 +309,7 @@
     //Draw some graphics
     int i, x[2], y[2] ;
     backlight = 0 ;
-    TFT.BusEnable(true) ;
+    //TFT.BusEnable(true) ;
     TFT.background(Black);
     wait(0.1) ;
     TFT.foreground(White);
@@ -159,20 +356,37 @@
     TFT.printf("simple graphics drawing") ;
     TFT.locate(20, 290) ;
     TFT.printf("capability is provided") ;
-    TFT.BusEnable(false) ;
+    //TFT.BusEnable(false) ;
     backlight = 1 ;
 }    
 
-double clip(double src)
+void screen3(void) // Graphics
 {
-    double value ;
-    value = src ;
-    if (value < 0.0) {
-        value = 0.0 ;
-    } else if (value > 2.0) {
-        value = 2.0 ;
-    }
-    return( value ) ;
+    //int rowX;
+    int rowY;
+    //int x = Terminal6x8[1];
+    int y = Terminal6x8[2];
+    
+    //Draw some text
+    backlight = 0 ;
+    
+    TFT.background(Black);
+    wait(0.1) ;
+    TFT.foreground(White);
+    wait(0.1) ;
+    TFT.cls() ;
+    wait(0.1) ;
+    
+    backlight = 1 ;
+    
+    TFT.set_font((unsigned char*) Terminal6x8);
+    
+    for( rowY=0; rowY<100; ++rowY )
+        {
+        TFT.locate(0, (rowY%25)*y);
+        TFT.printf("%3d TFT width = %d, height = %d", rowY, TFT.width(), TFT.height()) ;
+        }
+    
 }
 
 void incPage(void)
@@ -193,28 +407,26 @@
     
 int main()
 {
-    uint16_t x, y, z ;
+    point p;
+    
+    // setup the pc serial logger
+    logger.baud(115200);
+    logger.printf("\r\n\r\n<<<<<<<<< TFT SCREEN TEST >>>>>>>>>>>\r\n" );
+    
     int prevPage = 99 ;
     bool waitTouch = false ;
     
-    printf("Hello World\n") ;
+    initTFT() ;
     
-    tsc_cs = 1 ;
-    tft_cs = 0 ;
-    initTFT() ;
-    tft_cs = 1 ;
-
-    tsc_cs = 0 ;
-    TSC.spi_format(8, 1) ; // for Nucleo F411RE
-    tsc_cs = 1 ;
+    printf("Program Started!\n\r") ;
+    printf("TFT width = %d, height = %d\n\r", TFT.width(), TFT.height()) ;
     
- //   screen0() ;
-        
-    printf("Program Started!\n\r") ;
+    //calibrate();
     
     for(;;) {
-//        printf("TFT width = %d, height = %d\n\r", TFT.width(), TFT.height()) ;
-        tft_cs = 0 ;
+        
+        printf("page %d of %d\r\n", page, numPage );
+        
         switch(page) {
         case 0:
             if (prevPage != page) {
@@ -228,26 +440,33 @@
             }
             waitTouch = true ;
             break ;
+        case 2:
+            if (prevPage != page) {
+                screen3() ; 
+            }
+            waitTouch = true ;
+            break ;
         default:
             page = 0 ; 
             break ;
         }
         prevPage = page ;
-
-        tft_cs = 1 ;
-        do {
-            tsc_cs = 0 ;
-            TSC.getRAWPoint(&x, &y, &z) ;
-            if ((x != 0)||(y != 0) || (z != 0)) {
-                if (x < 1000) { // left
+        
+        do  {
+            if( getPixel(p) ) 
+                {
+                printf("TFT Touch x = %d, y = %d\n\r", p.x, p.y) ;
+                
+                if (p.x < 100) 
+                    { // left
                     decPage() ;
-                } else if (x > 3000) { // right
+                    } 
+                else if (p.x > 150) 
+                    { // right
                     incPage() ;
-                }
+                    }
                 waitTouch = false ;
-            }
-            tsc_cs = 1 ;
-        } while(waitTouch != false) ;
- //       wait(1) ;
+                }
+            } while(waitTouch != false) ;
     }
 }