David Smart
Example drawing mandelbrot on the RA8875 with touch to zoom in or out. Touch and hold > 4s to zoom out, touch to zoom in.
Saw the nice mandelbrot demo from Bob Stone and leverage it to use this library.
Revision 5:3efba02a1cb2, committed 2019-03-04
- Comitter:
- WiredHome
- Date:
- Mon Mar 04 12:11:39 2019 +0000
- Parent:
- 4:857e3bf77211
- Child:
- 6:3979c5ff6d32
- Commit message:
- Update RA8875 Lib to add GSL1680 support.
Changed in this revision
--- a/RA8875.lib Sat Jan 23 17:29:55 2016 +0000 +++ b/RA8875.lib Mon Mar 04 12:11:39 2019 +0000 @@ -1,1 +1,1 @@ -http://mbed.org/users/WiredHome/code/RA8875/#fc60bfa0199f +http://mbed.org/users/WiredHome/code/RA8875/#f92c0f1f6db4
--- a/main.cpp Sat Jan 23 17:29:55 2016 +0000
+++ b/main.cpp Mon Mar 04 12:11:39 2019 +0000
@@ -1,9 +1,27 @@
#include "mbed.h" // v112
#include "RA8875.h" // v102
-LocalFileSystem local("local"); //file system
+// These two defines can be enabled, or commented out
+#define BIG_SCREEN
+#define CAP_TOUCH
+#define LCD_C 16 // color - bits per pixel
+
+#ifdef CAP_TOUCH
+RA8875 lcd(p5, p6, p7, p12, NC, p9,p10,p13, "tft"); // MOSI,MISO,SCK,/ChipSelect,/reset, SDA,SCL,/IRQ, name
+#else
+RA8875 lcd(p5, p6, p7, p12, NC, "tft"); //MOSI, MISO, SCK, /ChipSelect, /reset, name
+LocalFileSystem local("local"); // access to calibration file for resistive touch.
+#endif
+
+#ifdef BIG_SCREEN
+ #define LCD_W 800
+ #define LCD_H 480
+#else
+ #define LCD_W 480
+ #define LCD_H 272
+#endif
+
Serial pc(USBTX, USBRX);
-RA8875 lcd(p5, p6, p7, p12, NC, "tft"); // MOSI, MISO, SCK, /ChipSelect, /reset, name
uint16_t width, height;
@@ -32,7 +50,7 @@
float xmin = centrex - 1.0/zoom;
float xmax = centrex + 1.0/zoom;
float ymin = centrey - height / (width * zoom);
- float ymax = centrey + height / (width *zoom);
+ float ymax = centrey + height / (width * zoom);
float dx = (xmax - xmin) / width;
float dy = (ymax - ymin) / height;
float y = ymin;
@@ -94,8 +112,13 @@
pc.printf("\r\nRA8875 Portrait Mode Dev. - Build " __DATE__ " " __TIME__ "\r\n");
pc.printf("Press 'P' to PrintScreen as bmp on local file system\r\n");
- lcd.init();
- lcd.frequency(10000000);
+ lcd.init(LCD_W, LCD_H, LCD_C);
+ lcd.Backlight(0.5f);
+
+ #ifndef CAP_TOUCH
+ InitTS();
+ #endif
+
width = lcd.width(); // Could have set the dimensions, let's just adapt.
height = lcd.height();
@@ -103,10 +126,7 @@
lcd.background(Black); // set background to black
lcd.foreground(White); // set chars to white
lcd.cls(); // clear the screen
- lcd.TouchPanelCalibrate("Touch to Calibrate,\r\nthen touch to zoom in,\r\nand touch-hold to zoom out.");
-
- //lcd.locate(0,0);
-
+
//Setup base Mandelbrot
float centrex = -0.5;
float centrey = 0.0;
@@ -120,21 +140,29 @@
pc.printf("ready for touch\r\n");
bool waitingOnUser = true;
while (waitingOnUser) {
+ TouchCode_t t;
+
if (pc.readable()) {
int c = pc.getc();
if (c == 'P')
GetScreenCapture();
}
- if (lcd.TouchPanelReadable()) {
+ t = lcd.TouchPanelReadable();
+ if (t != no_touch) {
bool zoomOut = false;
+ pc.printf("touch: %d\r\n", t);
timer.start();
timer.reset();
- while (lcd.TouchPanelReadable(&p)) {
+ t = lcd.TouchPanelReadable(&p);
+ pc.printf(" t: %d\r\n", t);
+ while (t == touch || t == held) {
if (timer.read_ms() > 2000) {
zoomOut = true;
break;
}
+ t = lcd.TouchPanelReadable(&p);
+ pc.printf(" u: %d\r\n", t);
}
if (zoomOut) { // long held is zoom out.
// zoom out
--- a/mbed.bld Sat Jan 23 17:29:55 2016 +0000 +++ b/mbed.bld Mon Mar 04 12:11:39 2019 +0000 @@ -1,1 +1,1 @@ -http://mbed.org/users/mbed_official/code/mbed/builds/6f327212ef96 \ No newline at end of file +http://mbed.org/users/mbed_official/code/mbed/builds/f9eeca106725 \ No newline at end of file